Senior Backend Developer

Senior Backend Developer Join Safello as a Senior Backend Developer! Build robust microservices, leverage AWS, and help shape the future of crypto. Fully remote, fast-paced environment with real impact! About Safello Safello is the leading cryptocurrency exchange in the Nordics, committed to making digital assets more accessible and secure for investors. Listed on Nasdaq First North Growth Market since 2021, Safello has been a registered financial institution with the Swedish Financial Supervisory Authority (Finansinspektionen) since 2013. We work relentlessly to make crypto accessible to everyone while ensuring compliance and security at every step. The Role As a Senior Backend Developer at Safello, you will be a key contributor to our development team, building and scaling the APIs powering our mobile and web applications. You’ll write well-tested, high-performance code and collaborate closely with cross-functional teams. Reporting directly to the CTO, you will also guide architectural decisions that enhance the reliability and scalability of our backend systems. About You • 9+ years of experience as a Backend Developer, ideally with Java Spring Boot • Skilled in SQL, AWS setup and cloud infrastructure • Comfortable with CI/CD pipelines as a core part of your workflow • Familiar with microservice infrastructure and design patterns • Experienced in building high-transaction, high-availability systems • Able to write clean, testable code and conduct effective code reviews • Strong problem solver who can troubleshoot and optimize existing services • Team-first mindset, excellent communication skills, and a drive to innovate Why Join Us? • Flexible B2B Contract : Enjoy autonomy in your schedule and invoicing, including 16 PTO days without deductions. • Cutting-Edge Equipment : We provide all necessary hardware and software tools. • Fully Remote : Work from anywhere at CEST timezone overlap, with the option to visit our Stockholm office. • Growth & Impact : Be part of a fast-growing company where you can significantly influence the future of financial systems and digital asset infrastructure. Not a fit if you: Want a big-corporate setup with every task defined end-to-end and little room for developer creativity Are uncomfortable working in a codebase with some legacy alongside new build Are looking for a client/contract gig — this is a full-time employee role Don’t want clear, actionable feedback based on your GitHub activity and pull-request quality How to Apply If you are excited about building high-performing backend systems in the rapidly evolving crypto landscape, we would love to hear from you! Please submit your CV/Resume and any relevant code samples or links to public repositories. We review applications and conduct interviews on a rolling basis, so apply today to help shape the future of financial systems at Safello! Department Development Remote status Fully Remote Box 638, 114 11, Stockholm About Safello Safello is an online cryptocurrency brokerage. Regulated as a financial institution with Finansinspektionen (Swedish FSA), Safello offers a secure way to buy and sell crypto, in seamless transactions at industry-leading speeds. Partners integrate Safello’s brokerage solution to their web and mobile applications. Founded in 2013 in Sweden, Safello is driving crypto adoption for users in Europe and beyond, with a safe, efficient and user-friendly platform. Founded in 2013