Senior Backend Engineer
Be part of the team that defends the networks the world depends on
Corelight defends the world’s most sensitive networks—from global commerce to national defense—quietly, relentlessly, and with resolve. As cyber threats grow faster and smarter, we serve as the trusted force behind network resilience, putting elite defense within reach.
By transforming digital footprints from physical, virtual, and cloud networks into actionable insights, we empower defenders to illuminate blind spots and stay ahead of an evolving threat landscape. Built on open-source innovations and fueled by industry leading agentic AI technology, Corelight helps teams to detect advanced threats and close cases with unprecedented clarity and precision.
As a Senior Backend Engineer for our Investigator team, you will be a primary builder of the evidence-based security platform that elite defenders use to disrupt cyber attacks. You won’t just be writing code; you will be architecting the scalable, cloud-native systems that transform massive streams of network data into actionable intelligence. By bridging the gap between complex data pipelines and high-performance APIs, you will play a vital role in shaping the future of Corelight’s Open NDR SaaS platform and ensuring our customers stay ahead of the most sophisticated adversaries.
Specific Responsibilities:
- Architect Scalable Systems: Lead technical design discussions to build and operate elastic, secure microservices using AWS serverless architectures (Lambda, API Gateway).
- Engineer Data Pipelines: Design and maintain robust Machine Learning and Data Analytics pipelines, utilizing Apache Kafka or similar technologies for real-time data ingestion and transformation.
- Build High-Performance Interfaces: Develop REST and GraphQL services designed to interface with massive datasets, providing the backend power for a rich, data-heavy visual user interface.
- Drive End-to-End Ownership: Work within an Agile team to take features from initial design through to production deployment, monitoring, and iterative improvement.
- Champion Engineering Excellence: Evangelize and implement best practices for code health, testing stability, maintainability, and overall system quality.
- Collaborate Cross-Functionally: Partner with product and architecture teams to influence product direction and translate complex security requirements into reliable software solutions.
Knowledge/Skills/Abilities needed to be successful:
- Applied Curiosity: You have a deep-seated desire to understand the "why" behind complex system behaviors and a passion for learning new technologies in a fluid environment.
- Low-Ego Results: You prioritize team success and project outcomes over personal recognition, fostering a collaborative environment where the best idea wins.
- Technical Influence: You thrive on collaborating with multiple teams and use your communication skills to help steer the technical and product roadmap.
- High Agency: You are a proactive problem solver who takes end-to-end ownership of your work, ensuring that features are not just "done," but are stable and performant in production.
Qualifications/Requirements:
- Professional Experience: 7+ years of professional software development experience, ideally within a SaaS or cloud-focused environment.
- Backend Expertise: High proficiency in at least one core language (Python, Java, and/or Go) and experience with both Relational and NoSQL databases.
- Cloud Mastery: Hands-on experience building and deploying services using AWS (Lambda, API Gateway, DynamoDB, S3) or equivalent cloud providers.
- API Development: Proven track record of building REST or GraphQL APIs that support complex, data-intensive user interfaces.
- Methodology: Strong experience working in Agile development environments and a commitment to modern CI/CD practices.
- Education: Bachelor’s degree in Computer Science, a related field, or equivalent professional experience.
- Preferred Differentiators: Experience with Docker/Kubernetes, familiarity with search tools like Elasticsearch/Splunk, or knowledge of network-based security detections and attack techniques.
Notice of Pay Transparency:
The compensation for this position may vary depending on factors such as your location, skills and experience. Depending on the nature and seniority of the role, a percentage of compensation may come in the form of a commission-based or discretionary bonus. Equity and additional benefits will also be awarded.
Why Join Us?
Fueled by investments from top-tier venture capital organizations such as Crowdstrike, Accel and Insight, Corelight is one of the fastest growing network detection and response platforms in the industry. Our passionate team thrives in a collaborative, inclusive, and geographically distributed culture. We embrace diverse perspectives, neurodiversity, curiosity and low ego results - fostering an environment where every innovator can solve the toughest challenges in cybersecurity and contribute their best work.
We are looking forward to meeting you. Check us out at www.corelight.com
Senior Software Quality Engineer, Release Testing
Be part of the team that defends the networks the world depends on
Corelight defends the world’s most sensitive networks—from global commerce to national defense—quietly, relentlessly, and with resolve. As cyber threats grow faster and smarter, we serve as the trusted force behind network resilience, putting elite defense within reach.
By transforming digital footprints from physical, virtual, and cloud networks into actionable insights, we empower defenders to illuminate blind spots and stay ahead of an evolving threat landscape. Built on open-source innovations and fueled by industry leading agentic AI technology, Corelight helps teams to detect advanced threats and close cases with unprecedented clarity and precision.
As the Senior Software Quality Engineer for our Release Testing team, you serve as the critical final gatekeeper for our Open NDR platform. You will ensure that the actionable insights generated by Zeek, Suricata, and YARA are delivered with absolute reliability to our global customers. By orchestrating complex, real-world network scenarios across cloud and on-prem environments, you bridge the gap between infrastructure and deep network analysis to ensure that defenders have a robust foundation to hunt threats and disrupt attacks.
Specific Responsibilities:
- Drive the End-to-End Testing Lifecycle: Act as the final technical authority on product quality, leading the strategy for stable, high-performance releases across multiple concurrent projects.
- Architect Scalable Test Infrastructure: Design and maintain high-fidelity test environments across on-prem, virtual, and cloud platforms (AWS, Azure, GCP) using Infrastructure as Code (Ansible, Terraform).
- Develop Advanced Automation: Build and optimize sophisticated automated test frameworks and utility scripts using Python and Bash to ensure fast, reliable feedback loops.
- Continuous Quality Integration: Manage test code within Git and seamlessly integrate automated suites into CI/CD workflows to modernize our release cadence.
- Network Protocol Deep-Dive: Perform expert-level analysis of network traffic (TCP/IP, HTTP, DNS, SSL/TLS) to design realistic test scenarios that mimic sophisticated production environments.
- Cross-Functional Triage: Partner with Development, Product Management, and the global QE organization to identify, prioritize, and resolve bottlenecks in the release pipeline.
Knowledge/Skills/Abilities needed to be successful:
- Proactive Problem-Solving: You are a proactive problem solver who doesn’t wait for instructions to address a bottleneck; you explore the "how" and "why" of system failures.
- Collaborative Leadership: You have a proven ability to lead testing efforts across multiple teams, managing priorities effectively even when timelines or requirements are ambiguous.
- Systems Thinking: You can visualize how complex network protocols and security insights interact across a geographically distributed, distributed-system architecture.
- High-Fidelity Mentality: You take pride in being the final gatekeeper, ensuring that every release is robust enough to protect the mission-critical assets of our global customers.
Qualifications/Requirements:
- Experience: 5–10 years of professional experience in Software Quality Engineering, SDET, or Systems Engineering roles.
- Automation Mastery: High proficiency in Python and Bash for infrastructure automation and tool development.
- Cloud & IaC Expertise: Hands-on experience with Ansible and Terraform, as well as production experience with at least one major cloud provider (AWS, Azure, or GCP).
- Networking Foundations: Deep working knowledge of Linux administration (RHEL/Ubuntu) and core protocols including TCP/IP, HTTP, DNS, and SSL/TLS.
- SIEM Proficiency: Hands-on experience with security analytics tools such as Splunk, Elastic, or Microsoft Sentinel.
- Education: Bachelor's degree in Computer Science or related fields, or equivalent professional experience.
- Preferred Differentiators: Experience with Docker/Kubernetes, CI/CD pipeline optimization, or familiarity with Zeek, Suricata, and YARA.
Notice of Pay Transparency:
The compensation for this position may vary depending on factors such as your location, skills and experience. Depending on the nature and seniority of the role, a percentage of compensation may come in the form of a commission-based or discretionary bonus. Equity and additional benefits will also be awarded.
Why Join Us?
Fueled by investments from top-tier venture capital organizations such as Crowdstrike, Accel and Insight, Corelight is one of the fastest growing network detection and response platforms in the industry. Our passionate team thrives in a collaborative, inclusive, and geographically distributed culture. We embrace diverse perspectives, neurodiversity, curiosity and low ego results - fostering an environment where every innovator can solve the toughest challenges in cybersecurity and contribute their best work.
We are looking forward to meeting you. Check us out at www.corelight.com
Account Development Representative (Join our Talent Community)
Be part of the team that defends the networks the world depends on
Corelight defends the world’s most sensitive networks—from global commerce to national defense—quietly, relentlessly, and with resolve. As cyber threats grow faster and smarter, we serve as the trusted force behind network resilience, putting elite defense within reach.
By transforming digital footprints from physical, virtual, and cloud networks into actionable insights, we empower defenders to illuminate blind spots and stay ahead of an evolving threat landscape. Built on open-source innovations and fueled by industry leading agentic AI technology, Corelight helps teams to detect advanced threats and close cases with unprecedented clarity and precision.
Join Our Talent Community: Future Inside Sales Openings
At Corelight, we are always looking for exceptional sales talent to join our mission. While we may not have an immediate vacancy in your specific territory today, we use this 'Evergreen' requisition to identify and vet top-tier candidates for upcoming openings. By applying here, you are entering our priority talent bench for the next available ISR seat.
Role Overview
As an Enterprise Account Development Representative at Corelight, you play a critical role in our revenue engine. Moving beyond traditional lead qualification, you will specialize in Enterprise Account Prospecting, conducting deep-dive research and persona mapping to penetrate the world’s most elite defenders.
You will partner with Field Account Executives and Marketing to build high-value pipelines. This role demands a sophisticated, consultative approach—engaging senior decision-makers with value-led insights. You will develop a deep understanding of their business challenges and articulate how Corelight’s Open NDR platform provides the solution. This is a high-impact position designed for sales professionals looking to master the enterprise sales motion and accelerate their career toward Field Sales or specialized customer-facing roles.
What You Will Do
Following a comprehensive onboarding program with our world-class Enablement team, you will:
- Execute Strategic Account Prospecting: Conduct rigorous research into Fortune 500 and Global 2000 accounts to identify business drivers, technical environments, and untapped opportunities within our Ideal Customer Profile (ICP).
- Master Persona Mapping & Nurturing: Navigate complex organizational hierarchies to identify and map key stakeholders—from SOC Analysts to CISOs. You will build and nurture long-term relationships through consistent, value-led touchpoints.
- Consultative Engagement: Engage decision-makers through a value-led approach to facilitate high-level conversations about network detection and response (NDR) and data-driven security.
- Drive Multi-Channel Engagement: Proactively engage executive prospects via hyper-personalized email, strategic social selling, and targeted outbound calls, delivering Corelight’s value proposition with precision and authority.
- Accelerate Pipeline Growth: Qualify inbound MQLs and convert them into strategic meetings. You will leverage the Pain-Power-Fit-Timeline methodology to prioritize high-intent opportunities and ensure a seamless handoff to your Account Executive partners.
- Maintain Sales Excellence: Demonstrate meticulous attention to detail by maintaining accurate, real-time records within our tech stack, including Salesforce, Outreach, and LinkedIn Sales Navigator.
Who You Are
We are looking for professionals who blend a competitive drive with a strategic, analytical mindset. You should be:
- Hungry: You are motivated by goals, growth, and grit. You don’t wait for leads — you create them.
- Consultative: Able to engage in credible, high-level business conversations with technical leaders and executives.
- Analytical & Creative: Passionate about the "detective work" involved in account research and persona mapping and bring engaging new ways to meet prospects where they are at in the buying process.
- Resilient: Thriving in a fast-paced, goal-oriented environment where persistence and creativity are rewarded.
- Coachable: Committed to continuous improvement and mastering the nuances of cybersecurity sales.
- Competitive: You love to win — whether it’s hitting quota, leading the leaderboard, or challenging yourself daily.
Preferred Qualifications
- 1–3 years of SDR or Inside Sales experience in IT Infrastructure solutions or cybersecurity companies (but we’ll train the right rookie if they have basic sales methodology training).
- Large account prospecting (Fortune 1000 accounts)
- Strong written and verbal communication skills.
- High emotional intelligence and professional persistence.
- Experience with Sales Productivity Tools (SalesForce, Sales Navigator, Outreach, etc.)
- Four-year degree from an accredited university, or equivalent relevant experience
Notice of Pay Transparency:
The compensation for this position may vary depending on factors such as your location, skills and experience. Depending on the nature and seniority of the role, a percentage of compensation may come in the form of a commission-based or discretionary bonus. Equity and additional benefits will also be awarded.
Why Join Us?
Fueled by investments from top-tier venture capital organizations such as Crowdstrike, Accel and Insight, Corelight is one of the fastest growing network detection and response platforms in the industry. Our passionate team thrives in a collaborative, inclusive, and geographically distributed culture. We embrace diverse perspectives, neurodiversity, curiosity and low ego results - fostering an environment where every innovator can solve the toughest challenges in cybersecurity and contribute their best work.
We are looking forward to meeting you. Check us out at www.corelight.com
Senior UI Engineer
Be part of the team that defends the networks the world depends on
Corelight defends the world’s most sensitive networks—from global commerce to national defense—quietly, relentlessly, and with resolve. As cyber threats grow faster and smarter, we serve as the trusted force behind network resilience, putting elite defense within reach.
By transforming digital footprints from physical, virtual, and cloud networks into actionable insights, we empower defenders to illuminate blind spots and stay ahead of an evolving threat landscape. Built on open-source innovations and fueled by industry leading agentic AI technology, Corelight helps teams to detect advanced threats and close cases with unprecedented clarity and precision.
As a Senior UI Engineer for the Fleet Manager product, you will play a crucial role in leading the development and architecture of the frontend systems that enable clients to manage a fleet of sensors at scale and act on complex security data. This is a role for a high-agency engineer who doesn't just build components, but owns the user experience from end-to-end. You will bridge the gap between sophisticated data-heavy APIs and intuitive user interfaces, ensuring our customers can secure their enterprise with speed and precision.
Specific Responsibilities:
- Architect & Develop Modern UI: Design, develop, and maintain modern, scalable web applications using React + Typescript and related frontend technologies to drive the Investigator product forward.
- Contribute to the Frontend Lifecycle: Help with the implementation of complex user flows by translating wireframes and UX designs into high-quality, accessible, and performant UI components.
- Data-Intensive Integration: Work with the integration and consumption of GraphQL and REST APIs to power interactive, data-heavy visual interfaces capable of handling massive network datasets.
- Uphold Technical Excellence: Maintain and elevate code quality through rigorous testing, detailed documentation, and sophisticated code reviews.
- Autonomous Agile Delivery: Navigate agile development workflows—including sprint planning, retrospectives, and daily standups—with high independence and a focus on delivery.
Being successful on this team requires the ability to:
- Engineering Craft: Take pride in writing clear, well-structured, and maintainable code, and care deeply about long-term quality over short-term fixes.
- Systems Thinking: Think beyond individual components, understanding how state, data, and UI architecture work together across a large application.
Product & User Empathy: Care about building interfaces that help users understand complex data quickly, and they make thoughtful tradeoffs in service of usability. - Ownership & Accountability: Take responsibility for outcomes, follow work through from design to production, and continuously improve what they ship.
- Collaboration & Communication: Communicate clearly, welcome feedback, and work effectively across engineering, design, and product to solve hard problems together.
Qualifications/Requirements:
- Professional Experience: 3 to 7 years of professional software development experience, with a proven track record in senior level roles.
- Frontend Mastery: Advanced in working with JavaScript/Typescript, Design Library Components, and React.
- Data & API Proficiency: Experience building and consuming GraphQL and REST APIs to support rich, data-heavy visual user interfaces.
- Architectural Knowledge: Solid understanding of relational databases to better partner with backend teams.
- UX Partnership: Significant experience working directly with UX Design Teams to refine and implement complex user flows.
- Agile Fluency: Experience adopting and using Agile development methodologies within high-performing engineering teams.
- Communication: Excellent communication skills with the ability to collaborate across multiple teams and influence technical outcomes.
- Education: Bachelor's degree in Computer Science or related fields, or equivalent professional experience.
Notice of Pay Transparency:
The compensation for this position may vary depending on factors such as your location, skills and experience. Depending on the nature and seniority of the role, a percentage of compensation may come in the form of a commission-based or discretionary bonus. Equity and additional benefits will also be awarded.
Why Join Us?
Fueled by investments from top-tier venture capital organizations such as Crowdstrike, Accel and Insight, Corelight is one of the fastest growing network detection and response platforms in the industry. Our passionate team thrives in a collaborative, inclusive, and geographically distributed culture. We embrace diverse perspectives, neurodiversity, curiosity and low ego results - fostering an environment where every innovator can solve the toughest challenges in cybersecurity and contribute their best work.
We are looking forward to meeting you. Check us out at www.corelight.com
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