Backend engineer golang in banking

SumUp; Berlin; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Health & wellness benefits

Pension scheme

Public transport card

Stock ownership program

Language learning platform

Mentorship and learning budget

Job summary

SumUp — команда Global Bank занята разработкой инфраструктуры банковских сервисов, обеспечивающих консолидацию и модернизацию баланса, а также создание глобального сервиса истории транзакций для merchants по всему миру.

В текущем фокусе — проектирование и реализация надёжных, масштабируемых систем, работающих в облаке и разворачиваемых с использованием Docker/Kubernetes; участие в архитектурных решениях и обмене опытом между регионами.

Qualifications

• Отчётливый опыт разработки над высоконагруженными сервисами и проектированием API; работа с моделированием данных и взаимодействием сервисов.
• Уверенное владение Golang, готовность осваивать Kotlin или Elixir по необходимости, поддерживать код и тесты.
• Опыт развёртывания в облаке AWS, работа с Docker и Kubernetes, соблюдение CI/CD практик.

Responsibilities

• Разрабатывать и эволюционировать банковские сервисы и расчётные ядра, переводить региональные системы в единое глобальное решение.
• Работать над журналированием, тестированием, улучшением архитектуры и поддержкой высоких объемов транзакций.
• Брать ответственность от дизайна до эксплуатации, мониторинг и улучшение качества поставляемого ПО.
• Сотрудничать с командами Risk, Treasury, Finance и Infrastructure для надёжной глобальной работы сервиса.

Skills

Golang

Backend systems

AWS

Kubernetes

PostgreSQL

CI/CD

Distributed systems

English proficiency

Tools

Docker

Kafka

Grafana/Honeycomb

Job description

Описание:

At SumUp, the Global Bank team builds the core infrastructure and services that give merchants a digital bank account, helping small businesses manage their money easily and reliably. The Balance Management Squad sits at the core of the Global Bank Platform. Right now, our team is completing a major milestone: consolidating and modernizing our balance management system in Europe. The next big step is creating a global transaction history service; a single, shared platform used by all regions to give merchants consistent and transparent views of their financial activity.

Задачи:

Build and evolve the SumUp’s core banking services that powers ledger operations and transactions, transforming our regional systems into a unified, scalable global platform. Tackle complex distributed systems challenges, ensuring resilient services that continue to perform under high transaction volumes. Support modernization initiatives by improving observability, adding test coverage, refactoring code for long-term maintainability, and gradually introducing new architectural patterns without disrupting live banking operations. Contribute to key architectural decisions - build ledger and transaction history systems from the ground up, ensuring a globally scalable banking solution for our clients. Collaborate with teams across Risk, Treasury, Finance, and Infrastructure to ensure smooth, compliant, and reliable global operations Take ownership from design to production, running the services you build, monitoring their performance, and continuously improving how we deliver high-quality software at scale.

Требования:

You have solid backend experience building reliable, high-volume services and you think carefully about system design, APIs, data modeling, and how services interact. You are proficient in Golang and comfortable learning and working with other languages as needed, e.g. Kotlin or Elixir. You write maintainable, well-tested code, follow CI/CD best practices, and take responsibility for the software you build from development to production. You’re comfortable building, deploying, and running services in cloud environments like AWS using Docker and Kubernetes. Are fluent in relational databases that perform well under load and maintain data consistency. You are a collaborator who enjoys working across regions, communicating clearly, exchanging feedback effectively, and making thoughtful technical decisions together. You have a curiosity for building reliable financial services and banking domain

Будет плюсом:

• Deeper PostgreSQL experience - we rely heavily on Postgres, so if you've done performance tuning, complex queries, or schema design, that's a plus
• Experience with event streaming platforms (Kafka preferred) and modern observability stacks (Grafana, Honeycomb, etc.)

Условия:

Be part of a company that values diversity and celebrates unique perspectives.

Work with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth.

Be part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world

Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 EUR) Sabbatical program for tenured SumUppers

Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more

• Health & wellness benefits: in-house fitness classes, gym in the office, subsidized Urban Sports Club and available psychotherapy sessions
• A lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc.
• Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success