Berlin, Germany
Internship Explorer
Internship Explorer
Build AI-powered products that impact millions of small businesses - at the start of your career. At SumUp, we build fintech solutions that empower over 4 million merchants across 37 markets to run and grow their businesses. Every day, this generates rich payments and business data - and SumUp’s next-gen AI tools turn that data into practical insights and intelligent tools that create real merchant value. The SumUp Accelerator is a two-part, up to 12-month, full-time, paid Program for early-career engineers who want to learn fast by working on real production systems. This is not a traditional internship. From day one, you’ll learn how machine learning systems are designed, shipped, and operated in real production environments - with guidance from experienced engineers and data scientists. Your Impact and What You’ll Do As part of an Accelerator squad, you’ll work alongside experienced engineers, data scientists, and product managers to: Design, build, and deploy machine learning and LLM-powered solutions in customer-facing products, learning how models are productionized through APIs, services, and scalable backend systems Develop and operate ML pipelines covering data processing, model training, evaluation, and serving Monitor, evaluate, and improve models to ensure strong performance, reliability, and robustness in production Apply software engineering best practices such as version control, CI/CD, testing, and code reviews Experiment with prompt engineering and LLM-based workflows to build secure, reliable, API-driven AI features Collaborate closely with data scientists, software engineers, and product managers to integrate ML solutions into real merchant workflows You won’t be working on toy examples. You’ll be learning how ML actually ships.
