Backend Engineer - Identity Lifecycle

Описание:

Sum Up provides simple and affordable financial tools that help small businesses manage payments, finance, and customer relationships. More than 4 million businesses in 36 markets rely on Sum Up as their financial partner.

Design, build, and operate scalable backend services, APIs, event-driven workflows, and system integrations Build reusable capabilities for merchant onboarding, identity verification, and KYC/KYB regulatory data collection Drive reliability and resilience across critical services through better observability, failure handling, incident response, and long-term risk reduction Work primarily with Go while maintaining and progressively modernising existing Java services Evolve domain models and service boundaries while reducing legacy complexity, duplicated logic, and tightly coupled integrations with a pragmatic, incremental mindset Own work end-to-end, from technical design and implementation to rollout and production follow-up Work across team and domain boundaries, turning ambiguous product and regulatory requirements into clear, scalable technical solutions Review code and designs, mentor engineers, and help raise engineering standards across the mission

Strong professional experience building and operating production backend systems with high business impact Experience with Go and Java, including maintaining and evolving existing Java services Strong knowledge of API design, distributed systems, asynchronous processing, data modelling, testing, and system design Experience with event streaming platforms such as Kafka and observability tools such as Grafana or Honeycomb Experience deploying and operating services in cloud environments such as AWS, ideally with Docker and Kubernetes Strong ownership mindset and ability to take complex problems from definition through production Experience improving the reliability of business-critical systems and turning recurring incidents into lasting engineering improvements Strong communication skills and a collaborative approach across Engineering, Product, Compliance, Risk, and Operations Будет плюсом: experience in fintech, payments, KYC/KYB, identity verification, or regulatory systems;

translating regulatory and compliance requirements into clear, scalable engineering solutions and bridging Compliance and Engineering

Office-first setup from the Berlin office Annual L&D budget of €2,000 for conferences and further education Enrolment in the VSOP program, with a stake in Sum Up’s future success Corporate pension scheme matching up to 20% of contributions 30-Day sabbatical after 3 years of employment Referral bonus Urban Sports Club subsidy, Kita placement assistance, relocation assistance, and subsidised office lunches