Software Engineer at AIOS — Hybrid, €40k-€80k /yr + equity

ABOUT AIOS

AIOS is building the world’s first full-stack AI doctor.

We’re at $400M ARR, growing from $10M/yr 12 months ago. We’re the world’s fastest growing AI doctor.

We’re faithfully serving >200k/mo patients via Bolt Pharmacy, our main UK brand. We’re profitable.

Our strategy exists at the intersection of two strong theses:

1. The AI doctor that wins will get to escape velocity using GLP-1s, the fastest growing consumer product in history.

2. The $2T European healthcare market is overlooked by the most talented builders.

Our master plan:

• Step 0 → $100M/yr by end of 2025: We went from $10M to $100M in 6 months serving the UK GLP-1 market.

• Step 1 → $1B ARR by end of 2026: Over the last 12 months we've grown from 3k to 150k UK active GLP-1 patients. We’ll continue this growth curve to hit $1B ARR.

• Step 2 → $10B ARR by end of 2028: Blitzscale Europe. We’ll be Europe’s largest GLP-1 provider.

• Step 3 → $100B/yr by end of 2031: Get regulatory approval across Europe for our Full Autonomous Prescribing (FAP) system. Win contracts at scale with European payers to mass replace human labor. We’ll be the dominant full-stack AI doctor in Europe.

• Step 4 → $1T/yr by end of 2035: With one line of code and zero human time, you can use AIOS to treat any patient globally with any medication.

In so doing, we’ll become the world’s first trillion-dollar healthcare company.

We’re a young, founder-led company. This is still Day 1 and all our work is ahead of us.

You can read more about working with us here: Working at AIOS https://app.notion.com/p/Working-at-AIOS-5b5c0a584af44de78ac7fb9b2cf8d993?pvs=21

BEING A SOFTWARE ENGINEER AT AIOS

As a Software Engineer at AIOS, your fundamental role is to build exceptional apps, tools, and services for our customers, clinicians, and internal teams.

Our systems serve >200k patients each month. Our agentic workflows autonomously generate >$100k of revenue per day. Our customer products support complete healthcare journeys, while our clinical systems help clinicians deliver care safely at enormous scale.

You’ll join one of these teams:

• AI Growth: Build self-improving growth loops across visitors, leads, and prospective customers. You’ll work across customer-facing AI, internal automation, experimentation, and growth products.

• Product Growth & Retention: Make checking in, reordering, and continuing treatment effortless. You’ll build in React Native and help make our mobile app the core product customers rely on throughout treatment.

• Engagement: Build the best healthcare app in the UK for patients and non-patients alike. You’ll create useful, engaging products that give people a reason to open the app regularly and build a lasting relationship with our brand.

• Care & Aegis: Build the clinical workflows, tools, data flows, and backend systems surrounding Aegis, our AI-assisted clinical decision-support system.

During the interview process, we’ll understand where you do your best work and find the team where your strengths can create the most leverage.

You’ll share ownership of the product itself: what gets built, how it works, how it feels to use, and whether it produces the outcome we expected. You’ll understand the people using your work, collaborate closely with product and design, and question decisions that do not make sense.

Your ownership continues in production. You’ll follow how people use what you built, understand the relevant metrics, identify where the experience falls short, and keep improving it.

We care deeply about the quality of our software. The systems you build must be clear, tested, observable, and maintainable by the engineers who come after you. You’ll make thoughtful architectural decisions, handle failure cases properly, review code seriously, and strengthen weak foundations before they become permanent constraints.

Speed matters just as much. At our pace, excellent engineering means finding the simplest sound design and shipping it quickly. Move fast, build well, and leave foundations that can carry what comes next.

We provide Claude Code and Codex subscriptions. We expect you to use them to increase your speed and ambition while retaining complete responsibility for your judgment, understanding, and work.

This role is FTE and remote, with some in-person working days with the Kosovo engineering team.

You’ll report directly to me, Gzim https://www.linkedin.com/in/ghels/ :) (VP of Engineering).

You’ll also work closely with:

• Ben Dowdle https://www.linkedin.com/in/bendowdle/ (Head of Product)

• Richie Cartwright https://www.linkedin.com/in/richard-cartwright/ (CEO)

KEY RESPONSIBILITIES

• Build Products End to End: You’ll work closely with product and design to understand the problem, shape the solution, build it across the stack, and carry it through production.

• Own the Experience: You’ll care about the complete experience, including edge cases, loading states, performance, reliability, and the small details that determine whether a product feels excellent.

• Build to Last: You’ll write clear, tested, observable, and maintainable software. You’ll choose simple architectures, handle failure cases properly, and strengthen the foundations beneath your work.

• Own Production: You’ll instrument what you ship, follow the relevant metrics, investigate failures, and keep iterating until the product creates the intended outcome.

• Use AI as a Force Multiplier: You’ll use Claude Code, Codex, and other AI tools throughout development to move faster, explore more ambitious solutions, and increase the quality of your work.

• Raise the Engineering Bar: You’ll review code seriously, communicate decisions clearly, share context, improve weak systems, and help the engineers around you do better work.

NEED TO HAVE

• Experience: You have 3+ years of professional software engineering experience and have shipped meaningful products used by real customers.

• Full-Stack Engineering: You can deliver across frontend and backend systems. You may be significantly stronger on one side, but you are comfortable working across both.

• Product Mindset: You care about what should be built, how it feels to use, and whether it creates the intended outcome.

• Engineering Quality: You write clear, tested, observable, and maintainable software. You understand architecture, databases, APIs, failure modes, and production reliability.

• Ownership: You acquire context proactively, raise uncertainty early, follow your work into production, and take responsibility for reaching the outcome.

• Judgment: You can balance speed, simplicity, and long-term maintainability. You push back clearly when a technical or product decision does not make sense.

• AI-Native Execution: You use AI development tools effectively and remain fully accountable for the quality and correctness of the work they help you produce.

NICE TO HAVE

• TypeScript: You have strong experience building production systems with TypeScript.

• Our Stack: You’ve worked with technologies such as React, React Native, Expo, Next.js, NestJS, GraphQL, Prisma, PostgreSQL, Redis, queues, and AWS.

• Note: Strong React Native experience is required for the Product Growth & Retention and Engagement openings.

• Applied AI: You’ve built customer-facing products, internal tools, or automated workflows on top of LLMs.

• Experimentation: You’ve instrumented products, run experiments, and used production data to decide what to improve next.

• Product Taste: You care about UX details and work effectively with designers to produce thoughtful, polished experiences.

• Startup Experience: You’ve worked in an environment where speed, ambiguity, and individual ownership were real.

• Education: A bachelor’s degree in Computer Science or a closely related technical field is a strong advantage.

OUR CULTURAL STANDARDS

We aim to make this your life's work. This should be the most challenging, most rewarding role of your life. Accordingly, these ar