Senior Backend Engineer

🕒 July 30, 2025

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SumUp

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2012

💸 Finance

💳 Fintech

🛍️ eCommerce

💰 Debt Financing on 2022-06

Finance • Fintech • eCommerce

SumUp is a company that offers a range of payment solutions and financial tools for businesses, such as card readers, POS systems, digital payments, invoicing, and online store services. Their products are designed to help businesses take payments, manage finances, and enhance sales with tools like business accounts, cash advances, gift cards, and loyalty programs. SumUp caters to various industries including food and drink, retail, and enterprise. They provide user-friendly tools to businesses worldwide, aiming to simplify transactions with low fees and easy integrations with existing systems.

📋 Description

• Evolve and maintain the Brazilian segment of the Transfers ecosystem within SumUp Global Bank tribe. • Supporting the transition from a localized setup with regional banks to a unified Global Bank • Design, implement, and iteratively develop highly available backend services, while continuously evaluating and implementing new methods to ensure the high reliability of transfer systems • Maintain and improve core services utilizing a modern, cloud-native technology stack (AWS), with microservices (Docker, K8s) written in Go/Kotlin and Elixir. • Improve test coverage for existing services and own the end-to-end delivery of changes, including testing, observability, and monitoring. • Continuously improve our engineering culture by refining best practices, clarifying problems and opportunities, prototyping solutions, providing comprehensive documentation, and selecting new tools and technologies.

🎯 Requirements

• You are proficient in one or more modern backend languages, we use: Golang, Elixir, Kotlin, Java, Ruby, or one functional programming language. • You are experienced in developing and maintaining distributed microservices and RESTful APIs • You have prior experience with modern cloud technologies (AWS, Docker, Kubernetes). • You are knowledgeable in event streaming platforms and messaging brokers such as Kafka and RabbitMQ • You have demonstrated an ability to learn new languages and technologies • You feel comfortable working with SQL and NoSQL databases • You have experience with CI/CD products such as GitHub Actions, Jenkins, ArgoCD • You take pride in your work, have a keen sense of ownership, and are dedicated to writing clear, maintainable, and testable code. • You’re a product-focused engineer who is passionate and curious about solving user challenges. • Have great English communication skills - you'll be part of a truly global team!

🏖️ Benefits

• A dedicated annual Learning & Development budget (R$10.000/ year) for attending conferences and/or advancing your career through further education • Enrollment in our virtual stock ownership program - you will own a stake in SumUp’s future success • A corporate pension scheme • Access to the SumUp Sabbatical, our Employee assistance program for mental health as well as Fitness and language learning benefits. • You’ll attend global offsites and/or hackathons