Software Development Engineer in Test III (SDET III)
"What You'll Be Doing"
About This Role
Safe is a $170M Series C-funded company that has built an AI-driven engine giving the C-Suite a quantified, real-time view of their security posture. The company serves 10% of the Fortune 500, including organizations such as Apple, Netflix, AT&T, Verizon, and Victoria's Secret. Safe describes its culture as high-intensity and mission-driven, built around extreme ownership, rigorous methodology, direct feedback, and a high standard of quality across engineering and sales work.
What You'll Be Doing
Lead a team of engineers responsible for functional testing across Safe's product suite
Own the quality strategy and test infrastructure for your area
Drive the adoption of AI across the entire test lifecycle — from test generation, to maintenance, to analysis
Take ownership of deploying the services your team tests
Evaluate the accuracy and reliability of AI agents used in testing and product workflows
Ensure the quality bar keeps pace with an increasingly AI-driven engineering organization
What We're Looking For
Experience as a Software Development Engineer in Test at a senior level (SDET III)
Experience leading a team of engineers
Experience owning quality strategy and test infrastructure
Experience driving adoption of AI tools within testing workflows, including test generation, maintenance, and analysis
Experience deploying services
Experience evaluating the accuracy and reliability of AI agents
Why Join Us
Meaningful equity — every "Safestar" is a shareholder and partner in the company's success
Unlimited leave, based on trust in employees to manage their own time
Comprehensive benefits, including top-tier medical insurance and wellness benefits for employees and their families
Career growth opportunities for high performers, in line with the company's aggressive growth
Requirements
Core Responsibilities: Team Leadership: Lead, mentor, and grow a team of high-performing engineers responsible for functional testing across Safe’s products and services Testing Strategy & Infrastructure: Define and drive the functional testing strategy, standards, and best practices across the team, while owning the design, build-out, and ongoing maintenance of test infrastructure and environments to keep them reliable, scalable, and easy for the team to work with AI-Driven Testing & Evaluation: Champion the use of AI across the test lifecycle, including AI-assisted test case generation, automated/self-healing test maintenance, and AI-driven analysis of test results and failures, while evaluating, benchmarking, and continuously improving the accuracy and reliability of AI agents used in testing and quality workflows Deployment Ownership: Take ownership of deploying product services to production, ensuring appropriate quality gates and rollback plans are in place Cross-Functional Collaboration: Partner closely with Engineering, Product, and Design to align test coverage and release readiness with product and business priorities Code Review: Conduct thorough code reviews to maintain code quality, identify opportunities for improvement, and share constructive feedback with team members Cloud Expertise: Leverage AWS services, including but not limited to AWS Lambda, API Gateway, EC2, S3, and RDS, to architect and optimize cloud-based solutions Problem Solving: Troubleshoot and resolve complex technical issues, identifying root causes and implementing effective solutions Requirements & Qualifications: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related discipline 5+ years of experience in Software Development Engineering in Test roles, with a strong track record in building, scaling, and maintaining functional, API, and UI test automation frameworks, including experience leading or mentoring engineers Hands-on experience applying AI/LLMs across the test lifecycle – including AI-assisted test generation, automated/self-healing test maintenance, and AI-driven analysis of test results and failures – along with the analytical skills to evaluate and improve the accuracy and reliability of AI agents Experience standing up and maintaining test infrastructure and CI/CD pipelines in containerized environments (Docker/Kubernetes), and owning deployment/release processes for production services Strong programming skills in one or more of Python, Java, JavaScript/TypeScript, or Go Excellent leadership, communication, and stakeholder management skills
About Safe Labs
Safe Labs is an innovative Berlin-based Web3 company at the forefront of secure digital asset management. We're building the foundational infrastructure for a truly decentralized future, empowering users and organizations with robust, self-custodial solutions. Our flagship products leverage advanced smart contract technology to provide unparalleled security and control over digital assets, setting new industry standards in the blockchain space. We believe in open-source principles and contribute actively to the wider Web3 ecosystem, fostering collaboration and driving technological advancement. Our culture at Safe Labs is defined by intellectual curiosity, a passion for decentralization, and a commitment to excellence. We foster a collaborative, results-driven environment where every team member is encouraged to push boundaries, experiment with novel approaches, and contribute to meaningful impact. We value diverse perspectives and believe that the best solutions emerge from a melting pot of ideas and expertise within the blockchain and crypto domains. Join Safe Labs and become part of a pioneering team shaping the future of secure digital finance. If you're a talented individual passionate about blockchain technology, distributed systems, and user empowerment, we offer an unparalleled opportunity to work on cutting-edge projects with global impact. Contribute to building the secure layer of Web3 and help us define the next generation of decentralized applications and infrastructure.
Ready to Apply?
To submit your application for this position, please visit Safe Labs's official website and follow their application process.