Senior Scala Engineer

About the Role

We’re looking for a Senior Scala Engineer with strong functional programming expertise and modern software engineering skills to join ING NL via Sytac. This is a fantastic opportunity to contribute to high-impact customer-facing systems in a complex, data-driven environment.

You will be part of the Customer Data Area, a cornerstone of ING’s digital ecosystem. This team ensures ING customers—both private and business—can seamlessly manage their personal data and mandates, enabling vital banking journeys such as account access, transactions, loans, and mortgages.

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Your Responsibilities

As a Dev Engineer, you will:

• Design and build scalable, secure, high-performance backend services in Scala

• Develop and maintain robust REST APIs and stream-based systems

• Implement test automation, monitoring, and CI/CD practices

• Handle incident, change, and problem management (in line with ITIL)

• Contribute to team processes, architecture discussions, and continuous improvement initiatives

• Support production environments and stakeholders with analysis and troubleshooting

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Must-Have Skills

• 3–4+ years of Scala experience, with solid functional programming foundations

• Experience with:

  • Designing scalable REST APIs

  • Message queues like Kafka (preferred) or RabbitMQ

  • Scala libraries: cats, cats-effect, circe, fs2

  • Akka ecosystem: HTTP, Streams, Actors

  • Testing frameworks: Testcontainers, Pacts, Mockito

• Proficient with:

  • CI/CD pipelines (Azure Pipelines preferred)

  • Linux environments

  • Agile/Scrum methodologies

  • ITIL principles (Incident, Problem, and Change Management)

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Nice-to-Have Skills

• Experience with Finagle and Finch

• Monitoring tools: Prometheus, Grafana

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Soft Skills & Mindset

• Proactive, automation-first mindset

• Strong analytical thinking and attention to detail

• Diplomatic communicator and team player

• Continuous improvement attitude and willingness to share knowledge

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What You’ll Get via Sytac

• Work with one of Europe’s most advanced digital banks

• Supportive consultancy culture with strong engineering focus

• Access to a broad technical community and professional development