Software Engineer in Test

Company Overview:
Dune Security’s User Adaptive Risk Management solution proactively prevents insider threats and social engineering by simulating multi-channel attacks, scoring user risk, and adapting training and controls in real time. Powered by AI, we quantify employee risk with comprehensive data and automatically deliver user-adaptive training and intervention. For higher-risk users, our platform integrates seamlessly with the broader security stack to dynamically implement controls. Backed by Craft Ventures, Toba Capital, Alumni Ventures, Firestreak Ventures, and Antler, we empower CISOs to proactively manage human risk—the leading cause of cybersecurity breaches—and build safer, more resilient organizations.

Role Overview

Dune Security is seeking a Senior SDET to champion the quality and reliability of our platform. Embedded within a cross‑functional product engineering team and reporting to the Engineering leadership, you will lead the end‑to‑end testing lifecycle—from proactive test planning and automation development to issue diagnosis and resolution. This role is instrumental in ensuring our products meet the highest standards of performance, security, usability, and operational resilience, directly impacting enterprise customer success and our position in the cybersecurity market.

Key Responsibilities

• Lead the full testing lifecycle for specific product features or domains, ensuring consistent delivery of quality, reliability, and performance.
• Design and implement comprehensive test strategies, plans, and automated test scripts across multiple levels including unit, integration, smoke, load, ETL, and end‑to‑end.
• Build and scale automation frameworks using tools such as Playwright, Cypress, and Testify in Python and TypeScript.
• Execute manual and automated testing across functional, integration, regression, performance, API, security and chaos‑probe scenarios.
• Establish, maintain and track service quality metrics (e.g., SLA/SLO targets such as 99.95 %–99.999 % uptime), monitor failure patterns, business indicators (QPS, latency, response distribution like p50 vs p99), and report insights to engineering and product leadership.
• Collaborate with the engineering, product and customer‑support teams to reproduce and diagnose real‑world enterprise issues and drive resolution.
• Validate complex end‑to‑end workflows including SCIM, SSO, MongoDB Atlas (and self‑hosted MongoDB), Google Workspace, identity integrations and risk‑analysis pipelines; clarify differences in data architecture such as concurrency, throughput and QPS.
• Enhance test infrastructure and CI/CD pipelines for operational efficiency, reliability, maintainability and environment parity (development, test, staging, production).
• Promote quality engineering best practices including containerization (e.g., Docker), microservices testing, tooling and log‑analysis, browser‑versioning, and edge‑case detection.

Qualifications

Required:

• 4+ years of experience in SDET, quality automation, or related software testing roles.
• Deep understanding of QA methodologies, test‑design and defect lifecycle management.
• Proficiency in automated testing frameworks and scripting languages (e.g., Playwright, Cypress, Selenium, Python, TypeScript).
• Strong debugging skills across web front‑ends, back‑ends and distributed cloud‑based systems.
• Hands‑on experience querying MongoDB (including find, aggregate, pipeline operations), and knowledge of scalability considerations (concurrency, QPS, throughput).
• Excellent written and verbal communication skills, especially in technical reporting and cross‑functional collaboration.
• Willingness and ability to work on‑site at our New York office five days per week.

Preferred:

• Experience supporting enterprise‐customers, managing high‑severity production issues or service‑outage scenarios.
• Familiarity with identity and access protocols and integrations (SSO, SCIM, Entra ID, Google Workspace).
• Prior involvement in scaling test infrastructure and continuous integration pipelines.
• Experience with performance testing tools (e.g., Gatling) and business‑metric monitoring (active users, CTR, etc.).
• Knowledge of containerization and microservices testing (e.g., Docker), tooling and logs analysis, browser versioning, environment parity.

What You’ll Bring

You are driven by a “quality‑first” mindset and thrive in a fast‑paced, mission‑driven environment. You bring strong analytic and problem‑solving skills, paired with curiosity and a collaborative spirit. You partner across teams to influence design, take ownership of complex issues end‑to‑end, and build solutions with resilience, scale and user experience in mind. You embody inclusive leadership by mentoring peers, sharing knowledge, and continuously improving processes. Above all, you align with our values of proactive risk management, continuous improvement and delivering secure, reliable solutions for our enterprise customers.

Why Join Dune Security?

• High‑growth cybersecurity startup backed by leading investors.
• Opportunity to build and scale a critical engineering function with direct impact on the company’s success.
• Exposure to senior leadership and close partnership with Engineering and Product teams.
• Competitive salary, meaningful equity package, and comprehensive benefits.
• Mission‑driven work that helps enterprises protect against today’s most pressing cybersecurity threats.

Additional Details

• Location
  : NYC. Candidates should reside within a commutable distance of our Tribeca, Manhattan office. 4 days in per week minimum.
• Hours
  : Full time.

Joining Dune Security provides an exciting opportunity to continue your career in cybersecurity with a cutting-edge company. If you’re passionate about learning and making an impact in the security space, we encourage you to apply.

Note: Dune Security is an equal opportunity employer and values diversity. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.