Senior Backend Engineer

Role Description

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.

Qualifications

• 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

Benefits

• Remote-first, trust-based culture.
• True flexibility with no fixed 9-to-5 schedule.
• Extra time off including your birthday as a holiday, 10 personal days, seven sick days without paperwork, and extra time for Christmas and New Year.
• Work that matters with a mission to build a secure, accessible, and inclusive digital world.
• Fair and transparent compensation, benchmarked to the market.
• Truly global work environment across continents and time zones.
• Growth built in with clear goals, open feedback, and personal development plans.
• Celebrating your big moments with financial bonuses for marriage and welcoming a new baby.
• Team offsites fully covered for in-person collaboration.
• Access to the tools and hardware you need to do your work well.
• Friendly by design, welcoming individuality and different perspectives.

Company Description

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 various industries, including financial services, crypto, mobility, trading, marketplaces, education, and iGaming.

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