Software Engineer

Octo is a health membership that makes concierge medicine accessible. A member gets their entire health history in one place, more than 100 biomarkers tested every year, and a protocol built by a doctor from their own data. Pre-seed. $3.2M raised from 3xP Global. Based in Lisbon, building for the US first. The role We're looking for a really good engineer. We care less about the label than the craft - but this role lives on the product's surfaces, so you'll lean frontend or mobile. Frontend means React, TypeScript and Next.js: the web experience where someone decides to trust us with their health data. Mobile means React Native on iOS and Android: the app where someone reads ten years of their own health. Tell us which one is yours - or show us you can do both. We work AI-first: Claude Code, Cursor, and whatever ships next month. Used as leverage, not as a crutch. You guide, validate, refine, and you ship faster than you thought you could. This is not about writing every line by hand. It's about combining technical excellence with AI-augmented development to move with speed and precision. What you'll do Build and ship the web or mobile surface of Octo, blending speed and craftCollaborate daily with product, design and backendUse AI coding tools for generation, review, testing and refactoring - and keep raising the bar on howHold high standards for code quality, testing and performance, and know when to override AI outputHelp shape the frontend or mobile architecture for scaleStep in where needed. We're a startup. Adaptability is the job. What makes you a great fit 3+ years in software development with a strong frontend or mobile focusAdvanced skills in React or React Native, with TypeScript and modern JavaScriptAI coding tools are already part of your daily workflowA track record of shipping and maintaining high-quality products people actually useStrong debugging, problem-solving and performance tuningSolid understanding of UI/UX and what makes an interface feel effortlessGit/GitHub and collaborative development best practicesFluent in EnglishBonus: shipped on both App Store and Google Play · CI/CD pipelines · authentication standards (OAuth, JWT) · cloud platforms (GCP, AWS) Requirements Location: commute to Lisbon, on-siteWork authorization: authorized to work in Portugal What we offer Meaningful equity, early enough that your work shapes the companyDirect impact on product and company directionSmall team, fast pace, real ownershipWork that actually matters to the people using it We move fast and work intensely. If that energizes you, you'll thrive here. How to apply Apply in 2 minutes at https://tally.so/r/q4EZA9. No cover letter. One link to something you've shipped. Pick Frontend or Mobile in the form. If there's a fit, you'll hear back within 2 business days.