Senior Product Engineer

Are you wanting to join one of Europe's most exciting scale-ups, building a hugely impactful product? I'm looking for a senior, product-focused engineer to join one of Stockholm's coolest startups, a product that is genuinely improving lives & making the world a better place, growing at a 20x rate vs industry incumbents and already a leader within smart, applied AI within their field! A few highlights of the company here 🔥

• 300,000 customers using the product
• Launched in Europe's biggest markets
• Significant funding and backing from some of Europe's top investors
• Strong investment in continuous product development, scaling the platform and accelerating their AI strategy, both internally, and applied AI

The role:✅ Currently, looking for an experienced engineer to join their team focused on the core platform, the payment engine and platform! You'll jump into an incredibly small & talented engineering team where product & commercial outcomes are central to the engineering, with a tonne of complex technical challenges and building on a scaling platform, expanding across Europe, new markets, millions of users and beyond! You will:✅

• Have the autonomy and ownership to build and own your features and systems end to end, from architectural decisions to launch
• Build scalable, high-reliability systems
• Leverage AI daily and explore new areas where AI can be applied into production for real user value
• Develop and maintain robust and scalable web applications
• Designing backend APIs in TypeScript / Node.js , exposed via GraphQL
• Building modern and efficient interfaces in Next.js / React
• Developing Python services for integrating LLM APIs (OpenAI or others)
• Contribute to architectural choices and ensure code quality

Tech stack: ✅

• Backend : TypeScript, Node.js
• Frontend : React, Next.js
• API : GraphQL
• Databases: MongoDB, PostgreSQL
• AI : Python, APIs LLM (OpenAI etc)
• Practices: automated testing, CI/CD, code reviews

What We're Looking For✅ We're looking for a strong Senior Software Engineer who combines technical depth and product sense. You are able to take onwership and drive your own tasks, operate in a pragmatic nature with startup pace, and be keen to be part of an incredibly humble but high agency, charistmatic and collaborative team! You should have:✅

• Significant experience building and shipping production software
• A track record of owning complex features or initiatives from idea to launch
• Strong architectural and systems-thinking skills
• Experience working closely with product/business stakeholders
• A genuine interest in the why, not just the technical implementation
• The ability to operate effectively in ambiguity and make pragmatic trade-offs
• High ownership and autonomy — you're comfortable figuring things out rather than waiting for detailed requirements
• Curiosity around AI and emerging technology, with good judgement around when and where to apply it
• A desire to build things that have measurable customer and business impact

This is a permanent role, hybrid out of a beautiful central Stokholm HQ. Currently unable to assist with visa support or relocation.