Swan is looking for a Senior Freelance Software Engineer to join is tech team of 70+ people for a specific project over a few months.

The Engineering team is by far the largest at Swan. This team includes Software developers, who build payments and end-customer applications, as well as Infrastructure, DevOps, QA, and Security.

We build with intent, focusing on solving real problems that matter. In a regulated environment, compliance, security, and resilience are at our core. We value ownership, open collaboration, and a shared vocabulary to keep complexity manageable. Simplicity is key, clean, maintainable code wins over clever tricks. We ship fast, learn continuously, and always strive for excellence. 💡

✨ Your mission

• You will be technically responsible for one or more projects.

• You will have the opportunity to solve problems in one of the most demanding IT domains with a reactive architecture.

• You will design with the product team the bank by API.

• You will improve the performance of a system with a rapidly growing load.

• You will ensure the respect of the architecture rules and of the automated tests

Our technical environment

• Scala ; FPTS ; Typelevel ; PostgreSQL ; Kafka ; GraphQL ; K8S ; AWS

✨ You’re a great match if:

• Experience: From 4-5 years as a Software Developer with a strong grasp of back-end systems.

• Mastery of common back-end issues (perfomance improvements, observability, database queries (SQL) and SQL performance improvements)

• Good knowledge of a JVM language (Kotlin, Scala or Java)

• Hands-on experience with automated testing & CI/CD

• Bonus: Familiarity with GraphQL, Kafka, and microservices architecture

• Passionate about functional programming & open source

• Always up to date with tech trends (meetups, blogs, side projects)

• Fluent in English

• Our ideal teammate: Empathetic. Skilled. Frank. We love to challenge each other, and we leave our egos at the door.

• A 30-min video call with our Talent Acquisition Manager, to get to know you, understand your career expectations and answer your questions

• A live coding interview with two Software Engineers

• A hiring manager interview with an Engineering Manager

• An interview with our Engineering Director