Senior Backend Developer (Travel Rule)

We are looking for a Senior Backend Engineer to build backend services for our Travel Rule product. This role is an exciting opportunity to work on complex integrations and real-world distributed systems in the crypto compliance domain.

What You Will Be Doing:

• Design and develop backend services for the Travel Rule product, enabling secure data exchange between crypto service providers

• Build and maintain integrations with multiple third-party providers, implementing various partner protocols and APIs

• Work with asynchronous, event-driven architectures to handle slow, unreliable, or partially available external systems

• Ensure high reliability, fault tolerance, and observability of distributed services under real-world constraints

• Collaborate with product and engineering teams to evolve the platform and support new regulatory and network requirements

• Take ownership of backend components from design through production and long-term maintenance

About You:

• Strong backend engineering experience (Java or similar languages) with a solid foundation in system design.

• Experience building and maintaining integrations with external systems and third-party APIs.

• Comfortable with asynchronous processing, distributed systems, and failure-prone environments.

• Good understanding of databases (MongoDB, ClickHouse, or similar) and data consistency trade-offs.

• Curious and motivated to work on complex, product-driven problems rather than purely technical challenges.

• Bonus: familiarity with crypto, blockchain fundamentals, or how crypto networks and wallets operate.

What We Offer:

• Remote-first, trust-based culture. Work from the place that works best for you. No mandatory office days, no attendance trackers. In some locations, we provide offices or coworking spaces, but the choice is yours.

• True flexibility. We do not fix you to a 9-to-5 schedule. You can adjust your working hours when needed, as long as your day stays productive and in sync with the team.

• Extra time off. Your birthday is a holiday here. Add to that 10 personal days each year, seven sick days without paperwork, and extra time to enjoy Christmas and New Year. Time to rest is part of the deal.

• Work that matters. Our mission is to build a digital world that is secure, accessible and inclusive for everyone. From fighting fraud to making online services easier and safer to use, your work will have a real impact on how people experience trust online.

• Compensation. We offer fair and transparent pay, benchmarked to the market.

• Truly global. We work across continents and time zones, with teammates and customers from all over the world. You will run campaigns that cross borders, cultures, and languages, and see your ideas land worldwide.

• Growth built in. Clear goals, open feedback and personal development plans. We support your progress with learning opportunities and by covering role-specific events, from design conferences to marketing forums.

• Celebrating your big moments. We are proud to support you through life’s biggest journeys with dedicated financial bonuses for both marriage and welcoming a new baby to your family.

• Team offsites. Sometimes just Slack is not enough. That is why we meet in person a few times a year. Trips are fully covered, so you can meet, collaborate, and recharge together.

• Getting you set up. We make sure you have access to the tools and hardware you need to do your work well.

• Friendly by design. Our logo is a dog for a reason. We keep things human, open and kind. We welcome individuality, quirks and different perspectives, because that is what makes our work smarter and more fun.

The hiring stages: TA screening -> Hiring Manager Interview -> Assignment -> Final Interview.

Sounds like a great opportunity for your career development? Then go ahead and apply!

We are a global community of innovators, creators, and thinkers, and we believe that diversity fuels our innovation. Sumsub is proud to be an equal opportunity employer, committed to building a diverse and inclusive workforce. We welcome applications from people of all backgrounds, cultures, genders, experiences, abilities and perspectives. Join us in shaping the future inclusively.

We believe in fair and transparent compensation. Salaries vary depending on work location and applicable local market conditions.

This role is open to candidates in multiple countries, and compensation differs based on the candidate’s confirmed work location. For this reason, a single universal salary range is not included in this job posting. The applicable work location will be confirmed early in the recruitment process, and the relevant compensation information for that location will be shared in writing, in line with local requirements.