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, and Kaizen Gaming.

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 Developer to join our rapidly growing team. This is an amazing opportunity to join Sumsub and make an immediate and real impact on the future of our product.

Java 17

Java Framework: DB: MongoDB / ClickHouse / Redis

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

Development of data processing algorithms related to remote identification / authentication of individuals (both product and technical).

Test driven development and A/B testing.

Optimization and automation of CI/CD pipelines to increase reliability and deployment speed.

Monitoring, troubleshooting, and performance tuning of cloud infrastructure and distributed systems.

Good command of the English language





Understanding of product and a passion for building software that provides a great experience

Experience developing clean, high-quality code and automated tests to verify its operation

Remote-first, trust-based culture. No mandatory office days, no attendance trackers. 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. 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.

Truly integral. We support your progress with learning opportunities and by covering role-specific events, from design conferences to marketing forums.

Sometimes just Slack is not enough. The hiring stages: We are a global community of innovators, creators, and thinkers, and we believe that diversity fuels our innovation. Salaries vary depending on work location and applicable local market conditions.

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.

📌 Senior Backend engineer (remoto) (España)
🏢 Sumsub
📍 España