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Salary: EUR 60,000 - 120,000 / annual
AIOS is building a full-stack AI doctor platform, currently serving over 200k patients monthly through Bolt Pharmacy (UK) and Bolt Med (international). The company is at $450M ARR (up from $7M in April 2025) and is profitable, with ambitious plans to reach $1B ARR by end of 2026 and scale across Europe.
As a Growth Engineer, you will own conversion funnels from first click to first purchase, working in a small team with a Funnel Conversion Lead and Web Designer. Your primary focus is shipping experiments at pace—landing pages, quizzes, eligibility flows, and checkout experiences—and iterating until conversion metrics move. You'll also build conversational funnels powered by Jesse, the company's AI agent, which guides leads through WhatsApp, email, and chat channels.
Beyond funnel optimization, you'll contribute to:
- Experimentation & Tracking: Building event tracking, attribution, and experiment infrastructure that Growth teams can trust
- Growth Infrastructure & Tools: Backend services, integrations, and internal tools supporting payments, CRM, ad platforms, and creator tooling
- Multi-Market Launches: Taking new funnels from MVP to converting V1, making each launch faster than the last
- Code Quality: Writing clear, tested, observable, and reusable software that scales across markets
You'll report to Ardian (Growth Engineering Lead) and work closely with the CEO, VP Technology, CRO Lead, and product teams. The role is full-time hybrid with 2 days per week in the Prishtina office. The company emphasizes speed, ownership, integrity, and excellence, with a culture built around mission-driven work at high intensity.
REQUIREMENTS:
- 5+ years of professional software engineering experience, including at least 1 year working closely with Growth teams
- Full-stack engineering capability: comfortable with both frontend (web funnels) and backend (APIs, services, queues, integrations)
- Growth mindset: think in experiments, understand CPC, CAC, conversion rate, LTV, and care whether shipped work moved the needle
- Experience building A/B testing, event tracking, or attribution systems
- Write clear, tested, observable, and maintainable software even at pace
- Strong ownership and judgment: acquire context proactively, raise uncertainty early, take responsibility for outcomes
NICE TO HAVE:
- Strong TypeScript experience in production systems
- Experience with NestJS, Node.js, React, Next.js, PostgreSQL, Redis, Kafka, BullMQ, Docker, AWS
- Webflow for marketing sites and funnel optimization
- Integration work with Stripe, Customer.io, PostHog
- Conversational AI, chatbots, or LLM-powered workflows
- Multi-market product launches (different languages, currencies, regulations)
- Startup experience with speed, ambiguity, and individual ownership
- Bachelor's degree in Computer Science or related technical field
