Senior Software Engineer, Developer Tooling at Nclusion (Palo Alto, CA)Senior Software Engineer, Developer Tooling

At Nclusion, engineers own their own testing. Our Quality Enablement & Developer Tooling team's job is to make that as fast and reliable as possible. As our first Senior Software Engineer on this team, you'll design and own the foundations: the testing SDKs that engineers use daily, and the K6 load testing framework that teams rely on to validate performance before it reaches production. This is a high-leverage IC role. You'll set the baseline standards the org builds on, while giving teams the flexibility to go further. The work you do here will multiply across every engineering team at Nclusion.

This role is based in our Palo Alto office. We work together onsite Monday through Thursday and remotely on Fridays.

• Build AI-powered helper tooling — test authoring copilots, automated helper functions, and other utilities that let engineers write and run good tests faster, with less friction.
• Own the testing SDK and K6 load testing framework as core pieces of a growing quality tooling portfolio — evolving them based on how teams actually use them, not building for their own sake.
• Partner proactively with engineering teams: understand their workflows, spot friction before it's flagged, and ship tooling that solves problems teams didn't know to ask for yet.
• Set org-wide baseline standards — test structure, coverage expectations, naming conventions — while giving teams room to build on top.
• Integrate tooling into GitHub Actions CI/CD pipelines and keep it fast, stable, and reliable.
• Write documentation and examples that make self-service the default; go hands-on when teams need it.

• 7+ years building developer tooling, internal platforms, or shared libraries used by other engineers — you think about API ergonomics and developer experience regardless of language.
• Strong CI/CD fluency — pipeline design, debugging flakiness, keeping builds fast.
• Genuine curiosity and initiative — you look at how engineers actually work and build things that make them faster, rather than waiting to be told what to build.
• A developer-first mindset: the engineers using your tooling are your customers, and you design accordingly.
• Credibility and communication skills to influence engineering teams you don't manage — you can make the case for a standard without being dogmatic about it.

• 📈 401k with a match!
• 🩺 Medical Insurance
• 🦷 Dental Insurance
• 👓 Vision Insurance
• 💸 Competitive compensation & equity – We believe in sharing success.
• ✈️ Flexible PTO – We focus on impact, not tracking vacation days. We encourage a minimum of 14 days.
• 🍽️ In-office lunch, team events & culture