Bitstack is a Paris-based mobile app that enables consumers to save in Bitcoin through recurring plans and automated round-ups.
ABOUT BITSTACK It all started with an idea in 2021. Initially built to democratize Bitcoin in France, Bitstack has gone from a simple product that invests spare change in bitcoin, to a crypto-native bank bringing a better way to save, spend, and grow money to our 300K+ users. We want to rebuild finance from the ground up to empower people to achieve financial freedom by participating in a more open and inclusive financial system. We’re a small, ambitious team of operators. We believe in moving fast, sweating the details, and creating products people truly love. At Bitstack, you’ll have the opportunity to shape not just our products, but the culture and practices of our entire organization. Bitstack is backed by YC, leading VCs like 13books Capital, Stillmark, Serena, and many more. We are building a product our users love and we are just getting started! THE ROLE Bitstack’s engineering team builds the technology platform that powers our mission. We care deeply about writing secure, efficient, well-tested code and shipping incrementally - we deploy every day. As a Software Engineer at Bitstack, you’ll be a hands-on builder within a small, high-ownership squad. We’re looking for engineers who take pride in their craft, think about user impact, and want to grow into broader technical ownership over time. You’ll operate with real autonomy, but with strong collaboration and support from experienced engineers around you. WHAT YOU'LL BE DOING - Collaborate with a growing Engineering and Product team within a multidisciplinary squad - Scope, design, deliver and support features end-to-end in production - Ship high quality, scalable, reliable products - Drive new initiatives with a willingness to challenge the status quo - Work in a highly compliant environment and contribute to the larger Bitcoin ecosystem - Contribute to internal tooling, infrastructure and platform improvements - Work with a cutting-edge software development stack in a cloud-native environment - Contribute to the broader tech and open source communities TECH STACK - Backend: Go, Python - Frontend: Flutter, Dart, TypeScript, JavaScript - Databases: SQL (basic DBMS knowledge helpful) WHAT WE'RE LOOKING FOR - 2+ years of professional software engineering experience - Experience scoping, designing and delivering production systems end-to-end - Strong backend fundamentals (APIs, databases, reliability) - You will have a product mindset and care about building something that users love - Strong analytical reasoning and problem-solving skills - Care deeply about security and working within regulated environments - Fluent English (French is a bonus) INTERVIEW PROCESS 1. Introductory Call (20 min) An initial conversation with our recruiter to get to know you better and share more details about the role, the team, and how we work at Bitstack 2. Engineer call (30 min) A conversation with one of our senior engineers to assess your technical background and some of the projects you've worked on. This is also an opportunity for us to introduce you to our engineering philosophy and the product ownership responsibilities that come with this role. 3. System Design (60 min) A discussion focused on how you approach problem-solving, communicate your ideas, and prioritize decisions. This helps us assess your technical depth and ability to design scalable systems 4. Take Home Task & Task Review Call (75 min) You’ll receive a practical task to complete in your own time. Once submitted, we’ll schedule a review call to walk through your solution together and explore your thought process in more detail as well as running through some code 5. Behavioural Interview (60 min) A conversation centered on your experiences, decision-making, and collaboration style. We’ll discuss real-world scenarios to understand how you navigate technical challenges, teamwork, and stakeholder interactions. PERKS & BENEFITS 🌎 Work from our office in Paris (Bourse) or Remote (Europe) 🕑 Flexible working hours 👩⚕️ One of the best health insurance plans with 100% employer contributions 🏄 Monthly team activities and bi-annual offsites 🍉 Swile meal vouchers 🤑 Competitive salary based on experience & Bitstack stock options Please note - we currently can only hire people who are based in the EU with working rights. If you need sponsorship we can provide this in France only. DIVERSITY & INCLUSION We hire talented and passionate people from all kinds of backgrounds, we don’t care about your age or where you studied. If you’re excited about the role but your past experience doesn’t match every bullet point in the job description, we still encourage you to apply. What matters most is that you’re a builder at heart, you share our values, and you’re enthusiastic about our mission. #LI-TT1