Senior Backend Engineer Technical

Sumsub is the first AI-powered trust infrastructure for compliance operations at scale.

It connects identity and business verification fraud prevention transaction monitoring and risk workflows helping teams reduce manual work and enter new markets.

Trusted by over 4 000 clients across financial services crypto mobility trading marketplaces education and iGaming including Bybit Bitpanda Wirex Avis Vodafone Duolingo Kaizen Gaming and Bancaribe.

Sumsub is recognized as a Great Place To Work® in the US and rated 4.3 out of 5 on Glassdoor.

Our 1 000+ people around the world back it up too: 92% are proud to be Sumsubers and 90% say their work is interesting and challenging.

Now we are looking for a Senior Backend Engineer to build and evolve backend services that power our core products.

Our stack:

• Main language: Java 17

• DB: MongoDB / ClickHouse / Redis

• Others: Apache Kafka / Kafka Streams / Elasticsearch / OpenSearch (k-NN) / Airflow

What You Will Be Doing:

• Design and develop core platform components services and shared libraries that power every product team across the company.

• Build foundational infrastructure that enables product teams to deliver features faster while maintaining consistency reliability and security.

• Develop security-critical services for protecting sensitive data secure access and encryption.

• Design and optimize high-load distributed systems for image and video processing.

• Improve the performance scalability and fault tolerance of mission-critical platform services.

• Shape our observability platform by evolving monitoring logging tracing and alerting capabilities.

• Plan and execute large-scale zero-downtime data migrations.

• Expand and improve our multi-region infrastructure to meet latency availability and data-residency requirements.

• Drive architectural decisions and take ownership of platform initiatives from design to production.

• Work on a diverse set of technically challenging problems spanning distributed systems infrastructure security and developer productivity.

About You:

• Strong experience with backend development (Java databases distributed systems)

• Confident in system design and building scalable production-ready solutions

• Able to work independently and take full ownership of complex tasks

• Understand performance reliability and best practices for backend services

• Experience working in a product-driven engineering team

• Comfortable collaborating with other teams and contributing to shared codebases

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 -> 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.

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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.