Jobs and Careers
ON
Senior Full-Stack Engineer
OnHiresSpainRemotefull_timeVerifiedPosted 3 Sept 2025
About the role
<p dir="ltr"><strong>Remote | Globally Distributed Team</strong><br/><strong>Data Platform / DevTools Product</strong><br/><strong>Full-time | Long-term | Stock Options Included</strong></p><p dir="ltr"><strong>Why This Role Stands Out</strong></p><p dir="ltr">Join a <strong>product-driven startup backed </strong>by the investors in Zoom, LinkedIn, Uber, and Twitter — a rare opportunity to shape a technically ambitious platform from the ground up.<br/> You’ll work alongside engineers from <strong>NASA, AWS, Meta, MIT, and Stanford</strong> on a mission-critical devtools product used by engineering and security teams to optimize how software is built and delivered.</p><p dir="ltr"> As an early team member, you’ll receive a <strong>significant equity stake</strong> - not just symbolic stock options, but real ownership in a company solving deep technical challenges. It’s a chance to build something meaningful and benefit directly from its success.</p><p dir="ltr"><strong>What You’ll Work On</strong></p><p dir="ltr">You’ll join the Applications team to build features end-to-end — from data processing and APIs to frontend components like browser extensions and IDE plugins.<br/> The focus is backend-heavy, but solid frontend skills are required for delivering user-facing developer tools.</p><ul>
<li dir="ltr"><p dir="ltr">Build and own features across backend, APIs, and frontend</p></li>
<li dir="ltr"><p dir="ltr">Develop internal and public APIs</p></li>
<li dir="ltr"><p dir="ltr">Integrate with the company’s data platform</p></li>
<li dir="ltr"><p dir="ltr">Contribute to browser/IDE plugins and dev-facing tools</p></li>
<li dir="ltr"><p dir="ltr">Support CI/CD pipelines and cloud-based delivery</p></li>
<li dir="ltr"><p dir="ltr">Collaborate with the infrastructure team (Kubernetes, GCP)</p></li>
<li dir="ltr"><p dir="ltr">Write well-tested, maintainable code</p></li>
<li dir="ltr"><p dir="ltr">Participate in code reviews and mentor other engineers</p></li>
</ul><p><br/></p><p dir="ltr"><strong>Tech Stack</strong></p><ul>
<li dir="ltr"><p dir="ltr"><strong>Primary Backend: </strong>Go, Kotlin, Java, or Scala — language flexibility is welcome; JVM experience is especially valued</p></li>
<li dir="ltr"><p dir="ltr"><strong>Frontend:</strong> TypeScript + any modern JS framework (React, Vue, Angular, Svelte — all accepted)</p></li>
<li dir="ltr"><p dir="ltr"><strong>Infrastructure:</strong> Kubernetes, Terraform, Docker, GCP</p></li>
<li dir="ltr"><p dir="ltr"><strong>Data Layer:</strong> PostgreSQL</p></li>
<li dir="ltr"><p dir="ltr"><strong>DevOps:</strong> CI/CD pipelines, GitHub Actions, CircleCI<br/><br/></p></li>
</ul><p dir="ltr"><strong>You Might Be a Great Fit If You Have</strong></p><ul>
<li dir="ltr"><p dir="ltr">8+ years of experience in software engineering</p></li>
<li dir="ltr"><p dir="ltr">Strong backend expertise (Go, Kotlin, Java, or Scala)</p></li>
<li dir="ltr"><p dir="ltr">Hands-on experience with RESTful APIs and data-heavy applications</p></li>
<li dir="ltr"><p dir="ltr">Familiarity with cloud infrastructure and Kubernetes</p></li>
<li dir="ltr"><p dir="ltr">Solid frontend skills (TypeScript, integration-level — no need for deep UI work)</p></li>
<li dir="ltr"><p dir="ltr">Ability to deliver production-ready features end-to-end</p></li>
<li dir="ltr"><p dir="ltr">Comfortable working across the stack and switching layers as needed</p></li>
<li dir="ltr"><p dir="ltr">Experience with developer tools or data platforms is a plus</p></li>
<li dir="ltr"><p dir="ltr">English: Upper-Intermediate or higher<br/><br/></p></li>
</ul><p dir="ltr"><strong>What’s In It for You</strong></p><ul>
<li dir="ltr"><p dir="ltr">Stock options in a fast-growing, VC-backed startup</p></li>
<li dir="ltr"><p dir="ltr">100% remote team with async-friendly culture</p></li>
<li dir="ltr"><p dir="ltr">Collaborate with world-class engineers from NASA, Meta, MIT, AWS</p></li>
<li dir="ltr"><p dir="ltr">Work on a high-impact devtools product used by engineering and security teams</p></li>
<li dir="ltr"><p dir="ltr">Unlimited PTO and flexible hours</p></li>
<li dir="ltr"><p dir="ltr">High ownership, zero micromanagement, no legacy<br/><br/></p></li>
</ul><p dir="ltr"><strong>Interview Process</strong></p>
<ol>
<li dir="ltr"><p dir="ltr">Recruiter screening (30 mins)</p></li>
<li dir="ltr"><p dir="ltr">CEO interview</p></li>
<li dir="ltr"><p dir="ltr">Math interview</p></li>
<li dir="ltr"><p dir="ltr">Technical interview #1 (live coding)</p></li>
<li dir="ltr"><p dir="ltr">Technical interview #2 (live coding)</p></li>
<li dir="ltr"><p dir="ltr">Final interview with CTO/co-founder<br/><br/></p></li>
</ol><p dir="ltr"><strong>Interested?</strong></p><p dir="ltr">Apply now or message us directly — we’ll be happy to share more about the role, product, and team. Let’s build something exceptional together.<br/></p>
Apply for this role
Generate a tailored application kit with a matched cover letter, interview prep, and CV highlights — in under 60 seconds.
Apply Now →Generate Application KitFree account required — sign up in 30s