Senior Backend Developer

Responsibilities

• Design, build, and optimize backend components powering external provider integrations
• Ensure high stability, performance, and observability across the integrations ecosystem
• Implement test-driven development and A/B testing
• Optimize and automate CI/CD pipelines
• Monitor, troubleshoot, and perform tuning of cloud infrastructure and distributed systems

Requirements

• Good command of the English language
• Experience developing clean, high-quality code and automated tests
• Strong analytical and problem-solving skills
• Ability to work in a team-oriented, empathetic environment
• Familiarity with Java 17 and distributed systems

Preferred Qualifications

• Experience with Dropwizard or Restler
• Experience with MongoDB, ClickHouse, or Redis
• Experience with Apache Kafka or Kafka Streams
• Experience with ElasticSearch or OpenSearch
• Experience implementing integrations using Feign or similar HTTP client frameworks
• Strong background in building resilient distributed systems

About the Company

Sumsub is an AI-powered trust infrastructure for compliance operations at scale, connecting identity verification, fraud prevention, and risk workflows for over 4,000 clients worldwide.