Middle Full-Stack developer

Middle Full-Stack developer We're Rist Labs — a cofounding studio building ethical, AI-powered B2C products that matter. We partner with sharp founders and top talent to launch ventures that move fast, scale globally, and make a real difference. We're looking for a Middle Full-Stack Developer, who can take product ideas from scope to shipped feature without waiting on handoffs. You'll own real product surfaces in Aligned's coaching app — onboarding, chat, memory, goals, reminders — and help the team ship fast in an early-stage, low-bureaucracy environment. Product you will work with: We're launching - a subscription-based AI Coach Aligned, trained on 1,000+ top books and expert insights — helping users achieve personal and professional goals faster with 24/7 coaching. Your qualities and skills that will be valued: 2+ years of commercial software engineering experience, experience in product companies is preferable. Strong TypeScript, Node.js skills. Experience with a modern frontend framework (React/Next.js, React Native/Expo). Backend API development experience and relational database basics. Ability to model product data. Hands-on experience integrating third-party APIs. Confident with Git, code review, and debugging. English level B2 or higher — able to read specs and discuss tradeoffs. Your additional advantages: Experience with OpenAI/LLM API integrations, prompt and conversation-flow engineering. Chat UI experience. Background with subscriptions/payments, A/B testing, or product analytics. Experience in wellness, coaching, education, productivity, or subscription apps. Familiarity with Claude Code/Codex or other AI-driven development workflows. Experience in mobile development. Your responsibilities will include: Building and maintaining product features and internal tools across frontend and backend. Implementing API endpoints and data models. Connecting AI/coaching flows to product state. Instrumenting analytics events to track activation and retention. Fixing bugs and improving UX quality. Participating in product scoping and breaking ambiguous requirements into implementable tasks. Reviewing code and writing pragmatic tests where useful. Collaborating closely with product, design, marketing, and AI/prompt stakeholders. Generating ideas on how to make the product run more efficiently. What we offer: Office/hybrid work format. Our Kyiv office is a hub for teams of all products. Freedom to build. No micromanagement. No politics. No fluff. Top-tier team. You'll work with proven operators, product thinkers, and creatives. Not one path. Yours. We support all kinds of growth: leadership, depth, and breadth, allowing you to choose how far and where to go. Paid vacation + sick leave. Perks: We benchmark salaries globally. We want you to feel valued, and paid like it. English courses. Apple gear, because we don't believe in slow laptops or slow ambition. Company-paid lunches (because hungry brains don't build great stuff). Recruitment process: Interview with recruiter. Technical interview with lead developer. Final interview on product mindset, collaboration, and culture. Reference check (2-3 references from previous managers). Job Offer. Department Rist Labs Locations Kyiv Remote status Hybrid Employment type Full-time rist labs We are a cofounding studio that turns bold ideas into ethical, AI-powered B2C ventures. You build the product — we handle the rest. We've launched 4 real-world EdTech and personal growth products across Tier-1, LatAm, Europe, and Ukraine. What we’ve co-built Mate academy — helped 5,000+ people break into tech Aligned — AI-powered personal coach Noot — AI health companion Kodree — 80% practice-based skills platform Read more about Rist Labs