Full Stack Senior Engineer - Relocation to Barcelona

We’re looking for a hands-on Tech Lead to join our Barcelona-based engineering team and help scale our platform for millions of users managing metabolic health conditions like PCOS, diabetes, and IBS.

This is a 80/20 technical/leadership role, ideal for a senior engineer who wants to stay deeply involved in code while building and leading a high-performing team. You’ll be responsible for our entire backend architecture, DevOps infrastructure, and day-to-day delivery operations.

You’ll work closely with the Head of Product and Head of Marketing to build rapid prototypes, ship production-grade features, and lay the groundwork for a world-class developer culture.
You will be the owner of the success of product features - you’ll work with your product counterparts to ensure that the requirements are clear and then follow up with owning the feature delivery end-to-end.

About Aspect Health

Aspect Health is building an AI co-pilot for lifestyle-driven chronic conditions. We began by addressing women’s metabolic health—starting with PCOS, a condition affecting nearly 20% of women worldwide and a leading cause of female infertility. From here, we’re expanding to tackle IBS and other lifestyle-driven chronic issues, leveraging continuous glucose monitors and advanced at-home tests to deliver real-time, personalized feedback that empowers lasting health changes.

In the last eight months, we’ve grown 1000% 😲 —scaling our ARR from $250K to $2.5M—and kicked off our B2B expansion by partnering with six clinics. We recently secured a $7M seed round backed by notable investors such as Lux, Valor, the founders of Flo Health, Deel, and scout checks from a16z, Sequoia, and Long Journey Ventures.

If you’re passionate about transforming healthcare through cutting-edge technology and real-world impact, Aspect Health is the place to be.

Qualifications

Required

• 6+ years of full-stack or backend engineering experience, with expertise in Node.js, TypeScript, and PostgreSQL.
• Solid command of frontend and mobile development, including React, React Native, and the Expo framework—able to build and ship features across the full stack.
• Ability to write production code, review pull requests, and build rapid prototypes for testing ideas or validating demand.
• Comfortable managing both local and remote engineers, with excellent communication and leadership skills.
• Knowledge of DevOps and cloud infrastructure, including GCP, Redis, CI/CD (GitLab preferred), and monitoring (Grafana).
• Proven experience with complete ownership of feature delivery, including experience leading agile processes (standups, retros, sprint planning) and ensuring predictable, on time, on scope delivery.
• Hands-on experience setting up test frameworks and building test coverage from 0 to 1.
• Proficiency with analytics and instrumentation tools, including Amplitude, GA4, and basic data debugging.
• Very good communication skills in English, both written and in person - be able to explain a problem or challenge to a stakeholder over a call, or through slack - and ensure that you have a resolution.

Bonus

• Experience with healthcare, wearables, or chronic condition platforms.
• Prior experience introducing AI tools for engineering velocity (e.g., Copilot, Cursor, codegen pipelines).
• Strong product instincts or prior experience collaborating closely with high-performing product managers—able to ask the right questions, challenge assumptions, and think critically about tradeoffs.
• Track record of growing into leadership roles in early-stage companies.
• Passion for building solutions that help people manage chronic health conditions using real-time data.

Why This Role Is Exciting

• You’ll define and own the technical backbone of a fast-growing health-tech company solving critical real-world problems.
• You’ll stay close to code while influencing architecture, delivery processes, and team culture.
• You’ll have the opportunity to grow into a CTO role as the team scales—this is a foundational hire.
• Your work will empower people with metabolic disorders like PCOS, diabetes, NAFLD, and IBS to regain control of their health using data from wearables and AI.
• You’ll shape the next generation of AI-enabled developer workflows, boosting productivity through modern tools and smart automation.

What We Offer

• Generous PTO: Take the time you need to stay fresh and inspired.
• Competitive Compensation: Salary plus benefits to match your experience and dedication.
• Fast-Paced Growth: In the last eight months, we’ve grown 1000%—scaling our ARR from $250K to $2.5M
• Impactful Work: Every feature you ship has the potential to improve someone’s quality of life.
• Collaborative Culture: Work cross-functionally with product, design, and business teams who are all rowing in the same direction
• Reclocation to Barcelona