Get to Know Us

is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn-it-alls, committed to a culture of respect, collaboration, ownership, and results.

Summary/Overview

We are looking for a Federal Platform Engineer to help lead the deployment and operation of our product infrastructure in multiple federal environments ranging from FedRAMP through Classified workloads. Your goal will be to help build, maintain and improve our platform running in AWS. Your expertise in cloud infrastructure, kubernetes, cloud infrastructure, and tools like Terraform, Ansible, and GitLab CI will be essential in creating scalable and secure systems that enable innovative experimentation. Join us in shaping the future of our platform, driving growth and empowering developers with a flexible and efficient environment.

Essential Functions

• Implement highly scalable, secure, resilient cloud-native application platforms that host core company applications, toolings, and other services vital to enabling our product to perform in all AWS regions where we are deployed.

• Identify, design, and deploy improvements in development and deployment processes so engineers can begin deploying anytime with confidence.

• Design and implement tooling for the internal platform to collect telemetry data used to gauge its effectiveness in supporting H3's engineers.

• Help create an effective documentation culture within the Engineering Organization (Confluence, Documentation as code).

• Participate in effective project management and work allocation (Jira, Agile Concepts).

• Create Terraform modules and Crossplane compositions that are easily consumed by all of engineering.

• Be a positive example of automation for infrastructure-as-code, platform operations, and overall CI/CD methodologies.

• Evaluate new technologies and patterns for automation, application hosting, and improving infrastructure provisioning. Recommend and define the work needed.

Competencies

• 5+ years of experience in DevOps, Platform engineering, or related roles.

• Ability to manage concurrent initiatives and use effective judgment in prioritization and time management.

• Creative, self-motivated, pragmatic, disciplined, detail and results oriented.

• Excellent analytical/problem solving ability.

• Strong understanding and experience with solution design and flow

• Strong technical documentation and communication

Tools

• Experience using Claude Code or other AI-enabled development tooling

• Gitlab CI/CD

• Argo Events, Argo Workflows, Argo CD

• SSO (OIDC, SAML, Okta, Social Sign-ins)

• Infrastructure as Code (Terraform, Crossplane)

• Secret Management (HashiCorp Vault, AWS Secret Manager, External Secrets Operator)

• Configuration Management (Ansible)

• Shell Scripting

• Programming Languages (GoLang required, Python a plus)

• Container Engines (Docker)

• Kubernetes (RKE2, K3S, EKS)

• Logging and Metrics (Datadog, OpenSearch)

Cloud Technologies:

AWS Core Services

• Compute (EC2, Lambda, EKS)

• Storage (S3, EBS)

• Database (AuroraRDS - Postgres)

• Networking (VPC, VPCe, RT53)

• Event-Driven Architecture (SQS, EventBus)

• Security (IAM Roles and Policies, KMS, Cloudtrail)

• User Management (Cognito, Organizations, SSO)

Education:

• Bachelors in Computer Science or STEM or equivalent experience

• MS in Computer Science a plus

Citizenship/Clearance

• US Citizen Required

• Possess or ability to gain and maintain Top Secret security clearance required

Nice to Haves

Experience in FedRAMP, CC SRG, NIST 800-53, or Authority to Operate (ATO) process.

Other duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Why H3

• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

• Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities.

• Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.

• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.

• Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive.

Travel Required

We are a fully remote company, and this job may require up to 5% of travel to be successful. Job-related travel expenses are reviewed and must be approved by your manager.

Compensation Disclosure

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

• Base salary range: The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

We are committed to pay equity, fairness, and transparency. All candidates will be evaluated based on their skills, experiences, and potential contributions without regard to race, gender, age, or any other protected status. is an equal opportunity employer and is committed to providing a work environment that is free from discrimination and harassment. We do not discriminate based on race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status.

We encourage all qualified candidates to apply for open positions with our company and welcome candidates from all backgrounds and experiences. We are committed to providing equal employment opportunities to all employees and applicants for employment and will make reasonable accommodations to enable individuals with disabilities to perform the essential functions of their roles.

Join ’s team of passionate professionals and contribute to the growth of cutting-edge cybersecurity solutions while building strong customer relationships in a dynamic and remote work environment.

Get to Know Us

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

What You’ll Do

The Senior Account Executive (MSSP) - West will play a lead role in accelerating Horizon3’s revenues through Managed Security Service Providers (MSSP). The responsibility will involve establishing and nurturing relationships with targeted MSSP accounts to drive sales growth within a designated territory.

• Identify, recruit and enable new MSSP partners to expand the business portfolio.

• Collaborate with MSSP partners to develop and roll out new services built around Horizon3 NodeZero.

• Drive broad MSSP customer adoption of NodeZero.

• Assist in driving sales growth and new customer acquisition through partnerships with MSSPs.

• Meet revenue and profitability goals by generating new business opportunities.

• Develop and execute a comprehensive joint business plan and sales strategy with MSSP partners.

• Provide accurate forecasts and maintain detailed sales tracking and planning.

• Lead MSSP partner engagements, overseeing daily operations and addressing inquiries.

• Foster strong relationships with engineering and marketing teams to identify and resolve product-related issues, including quality, delivery, and design concerns.

• Maintain a high level of activity to meet sales quotas and ensure pipelines are built to meet quarterly sales goals.

What You’ll Bring

• 8+ years of proven success in cybersecurity technology sales

• 8+ years of experience selling to or through MSSPs.

• Demonstrated experience in developing joint services with MSSP partners that generate additional revenue streams.

• Deep knowledge and relationships with strategic MSSPs in respective territories.

• Expertise in managing channel relationships.

• A history of consistently meeting quotas and utilizing solution-selling or target-account-selling techniques.

• Ability to grasp complex technical challenges in the Networking and Security space from a business perspective.

• Strong sales and relationship-building capabilities with a successful track record in negotiating and closing deals within the designated territory.

• Experience selling to executive-level decision-makers.

• Proficient in presenting technical solutions and business concepts clearly through demonstrations and proposals.

• Self-driven, capable of problem-solving and operating with minimal supervision.

• Comfortable working in a fast-paced start-up environment, with a hands-on, proactive attitude.

• Seeking individuals with outstanding interpersonal skills and a positive, solutions-focused mindset.

Travel Required

We are a fully remote company and this job may require up to 50% of travel to be successful.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

• Base salary range: $220,000 - $280,000 OTE 60/40 split annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

Perks of Horizon3

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.

• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.

• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.

• Remote Work: We are a 100% remote company. Enjoy the flexibility to work in the way that supports you and brings out your best.

• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Application Note

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

Get to Know Us

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

What You’ll Do

We are seeking a motivated Mid to Senior Level Enterprise Technical Support Engineer with 5+ years of hands-on industry experience to join our high-performing support team. In this role, you will serve as a key technical resource for our enterprise customers, diagnosing and resolving complex issues related to cloud infrastructure, networking, and security. You'll collaborate with cross-functional teams to ensure seamless customer experiences, leveraging your expertise in Linux, containerization, and cloud technologies. This position requires a proactive self-learner who thrives in fast-paced enterprise environments and can handle escalated support tickets with minimal supervision. This position will focus on supporting our Federal Products consisting of FedRAMP and DoD IL4/5/6 environments.

Key Responsibilities

• Provide advanced technical support to enterprise customers via phone, email, chat, and remote sessions, troubleshooting issues across cloud, networking, and infrastructure domains.

• Diagnose and resolve customer-reported problems, performing root cause analysis to prevent recurrence and ensure high availability of services.

• Collaborate with engineering, product, and sales teams to escalate and resolve intricate technical challenges, while documenting solutions for knowledge sharing.

• Assist in the deployment and optimization of customer environments, offering guidance on best practices for infrastructure as code (IaC) and containerized applications.

• Monitor and respond to support tickets in a timely manner, maintaining SLAs and contributing to continuous improvement of support processes.

• Mentor junior team members and contribute to internal training resources, fostering a culture of knowledge transfer and technical excellence.

• Stay abreast of emerging technologies and industry trends to enhance support capabilities and customer satisfaction.

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field (or equivalent professional experience).

• 5+ years of relevant industry experience in technical support, systems administration, or cloud operations, ideally in an enterprise-level environment (e.g., supporting large-scale deployments for Fortune 500 clients).

• Strong proficiency in Linux administration, including server configuration, performance tuning, security hardening, and troubleshooting in production environments.

• Hands-on experience with Docker and containerization technologies, such as building, deploying, and managing containerized applications in orchestrated environments (e.g., Kubernetes or similar).

• Solid understanding of cloud platforms (e.g., AWS, Azure, or GCP) and Infrastructure as Code (IaC) tools like Terraform, Ansible, or CloudFormation, with experience provisioning and managing cloud resources.

• In-depth knowledge of networking fundamentals, including TCP/IP, firewalls, VPNs, load balancers, and network troubleshooting tools (e.g., Wireshark, tcpdump).

• Basic scripting skills in languages such as Bash, Python, or PowerShell for automation of routine tasks, diagnostics, and simple workflow enhancements.

• Demonstrated self-learning ability, evidenced by personal projects, home labs, certifications (e.g., AWS Certified Solutions Architect, Linux+, or equivalent), or contributions to open-source communities, with a track record of adapting to new technologies independently.

• Experience equivalent to a junior cloud administrator role in an enterprise setting, managing multi-tenant environments, resource allocation, and compliance requirements.

• Familiarity with identity management systems, including Role-Based Access Control (RBAC), Single Sign-On (SSO) protocols (e.g., OAuth, SAML), and directory services (e.g., Active Directory, LDAP).

• Basic understanding of database concepts, including relational and schemaless databases (e.g., SQL vs. NoSQL), schema design, querying, and basic administration tasks.

• Demonstrated experience troubleshooting, deploying, or maintaining cloud-based SaaS products for DoD and/or FedRAMP enclaves in production.

• Must reside in the East Coast timezone, with additional preference for Washington D.C / Baltimore Metro areas.

Preferred Qualifications

• Proven experience integrating and troubleshooting APIs, including RESTful services, authentication mechanisms, and API-driven automations in enterprise applications.

• Familiarity with observability tools like Datadog, including monitoring, logging, and alerting for distributed systems to enhance system reliability and performance.

• Basic experience with managed database services such as Amazon RDS, including setup, backups, scaling, and query optimization.

• Full-stack coding proficiency in languages like Python, JavaScript, or Go, with experience developing custom tools or scripts for support automation.

• Background in cybersecurity, including knowledge of threat detection, vulnerability management, encryption standards, and compliance frameworks (e.g., SOC 2, GDPR).

Work Authorization & Security Clearance Requirements

• Must currently have or previously have held a clearance or demonstrate qualification to gain a US GOVT Top Secret Clearance

Travel Required

We are a fully remote company, and this job may require up to 5% of travel to be successful.

Perks of Horizon3

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.

• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.

• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.

• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.

• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

• Base salary range: $102,465 - $126,500 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, hair length or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Application Note

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

About the Team

OpenAI’s Compute organization turns ambitious AI research into real-world capability by delivering the compute infrastructure behind our most advanced models. The team works across software, hardware, facilities, operations, and engineering disciplines to make enormous amounts of compute available, reliable, and efficient.

As the demand for frontier AI grows, so does the complexity of the systems required to support it. Scaling this infrastructure means solving problems that cut across distributed systems, ML infrastructure, GPU fleets, power, cooling, networking, manufacturing, supply chain, and data center delivery.

Our work is focused on expanding the compute foundation that enables OpenAI to train more capable models, including systems like GPT-5.6, and make frontier AI available to more people, products, and workflows. We’re looking for exceptional people across many disciplines to help build the next generation of AI infrastructure at a scale few organizations have attempted.

About the Role

We are hiring across a broad range of roles to help design, build, scale, and operate OpenAI’s compute infrastructure. Depending on your background, you may work on large-scale distributed systems, ML infrastructure, hardware systems, manufacturing, supply chain, data center development, or the physical engineering systems required to bring massive compute capacity online.

You’ll work with teams across research, engineering, hardware, operations, and infrastructure to solve high-impact problems at extraordinary scale. This may include improving system reliability, accelerating deployment timelines, increasing operational efficiency, designing new infrastructure, or helping bring new compute platforms and facilities from concept to production.

This is an opportunity to work on one of the most important infrastructure challenges in AI: building the compute foundation required to train and serve increasingly capable frontier models.

Key Responsibilities

• Help build, scale, and operate OpenAI’s global compute infrastructure.

• Solve complex problems across software, hardware, manufacturing supply chain, and data center systems.

• Improve the reliability, performance, efficiency, and scalability of critical infrastructure.

• Partner with cross-functional teams to bring new compute capacity online quickly and reliably.

• Identify bottlenecks across technical, operational, and physical systems, and develop practical solutions.

• Build tools, processes, systems, or infrastructure that improve execution at scale.

• Contribute to the long-term architecture and operational maturity of OpenAI’s compute footprint.

Qualifications

• Have experience building, scaling, or operating complex technical systems.

• Enjoy working on ambiguous, high-impact problems where the path forward is not always defined.

• Are comfortable collaborating across disciplines, including software, hardware, operations, and physical infrastructure.

• Have strong technical judgment and a bias toward execution.

• Care deeply about reliability, speed, safety, and operational excellence.

• Are excited by the challenge of building infrastructure at unprecedented scale.

• Want your work to directly support the development and deployment of frontier AI.

Preferred Skills

• Have experience with AI infrastructure, high-performance computing, distributed systems, GPU clusters, or cloud-scale platforms.

• Have worked on hardware systems, manufacturing, supply chain, data center development, or large capital infrastructure projects.

• Have domain expertise in civil, controls, mechanical, hardware, electrical, thermal, power, networking, or facilities engineering.

• Have helped bring new technical platforms, data centers, factories, or large-scale systems from concept to production.

• Have experience operating in fast-moving environments where technical depth and execution speed both matter.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. 

We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

For additional information, please see .

Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.

To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.

We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this .

OpenAI Global Applicant Privacy Policy

At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.

Get to Know Us

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

What You'll Do

We're looking for an Engineering Manager to lead the Data Processing Platform team — the group responsible for how NodeZero turns raw pentest telemetry into the findings, reports, and insights our customers act on.

As Horizon3 has grown in both customer count and customer size, pentest execution and data processing times scaled as well. Your team is taking on one of the most impactful architectural changes in Horizon3's history: reworking pentest data processing from a batch system into a real-time, event-driven microservice architecture. The goal is to make Horizon3 best-in-class for enterprise pentests at scale — handling hundreds of thousands of hosts and streaming findings as they're discovered. Customers will go from waiting weeks for insights to getting them in hours, fundamentally transforming how the entire product suite feels to use.

This work combines platform engineering to build the infrastructure foundation with cybersecurity domain understanding to translate years of batch-centric business logic into real-time processing.

In this role, you will:

• Lead and grow a team of backend and platform engineers migrating post-op processing from a batch system to a real-time, event-driven architecture.

• Partner with Product, Attack Engineering, and adjacent Platform teams to sequence the rework so customer value ships continuously rather than as one big-bang cutover.

• Work with senior engineers on the team to shape the technical direction: event streaming, stream processing, storage, schema evolution, and replayable processing.

• Invest in operational excellence — SLOs, observability, on-call, and incident response — as this system becomes central to every pentest Horizon3 runs.

• Help translate existing batch-era logic (finding enrichment, attack path analysis, reporting) into streaming-friendly designs without regressing fidelity.

• Recruit, mentor, and retain engineers who care about both distributed systems craft and the security domain.

• Establish healthy team practices: design reviews, technical writing, clear API contracts with neighboring teams, and durable decision records.

This is a good opportunity for a manager who still enjoys being close to the technical details and wants to grow alongside a team tackling a meaty data platform rebuild.

What You'll Bring

• Experience managing backend, data, or platform engineering teams, with a track record of shipping through the team.

• Solid fundamentals in backend and distributed systems: data modeling, API design, queues/streams, and the tradeoffs between batch and streaming.

• Comfort with modern cloud infrastructure (AWS preferred), containers, and observability tooling (Datadog or similar).

• Ability to lead through technical ambiguity — you can facilitate a design discussion, help the team converge, and know when to dig in yourself.

• Clear written communication: you can put together a roadmap, a design doc, or a postmortem the rest of the company can read.

• A sense of ownership for how the team operates day-to-day, not just what it ships.

Nice to have:

• Exposure to event-driven architectures or streaming platforms (Kafka, Pulsar, Kinesis, Flink, or similar).

• Background in cybersecurity, pentesting, or vulnerability management.

• Familiarity with Python and/or Go.

Perks of Horizon3

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.

• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.

• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.

• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.

• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

• Base salary range: $260,000 - $280,000 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Application Note

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.