Senior Scala Developer

• /
• Senior Scala Developer (Fintech | Post-Trade) Senior Scala Developer (Fintech | Post-Trade) ===================================================

We need 4–5+ years of commercial Scala experience Technologies Akka (Actors, Streams, HTTP), ZIO, Apache Kafka €38-€44 hourly B2B/100% Remote We are looking for a Senior Scala Developer to join a globally recognized fintech project focused on post-trade automation and large-scale financial systems. Our client is a London-based technology company trusted by more than 180 financial institutions worldwide, including 25 of the 30 globally systemically important banks (G-SIBs).

You’ll have the opportunity to work on mission-critical systems used across the global financial market, all while enjoying the flexibility of fully remote work.

Day at ScalaC

Remote-first work You start your day from wherever you work best. No commute, no office routine, no unnecessary distractions — just your setup, your rhythm, and the space to focus. Whether that means an early coffee, a quiet morning, or jumping straight into deep work is up to you.

Working with experienced people Your teammates may be based in Brazil, Portugal, Lithuania, San Francisco, or one of many other locations, but collaboration is part of the everyday work. You work with strong engineers who are open to sharing what they know — in projects, internal sessions, external trainings, conferences, and day-to-day discussions.

Staying close to the Scala community You finish your day by hanging out with folks from the Scala community who are taking part in one of Scalac’s Meetups for Scala Community (it could be a Functional World we host or one of many more we support). You have a great discussion with them about the recent open-source projects we support and end your day positively inspired.

Responsibilities

Your role in the project

• Designing and implementing real-time financial data streaming components

• Building and maintaining services based on Akka (Actors, Streams, HTTP)

• Developing Kafka consumers with proper offset handling and advanced error management

• Working with Slick and PostgreSQL (schema modeling, queries, migrations)

• Writing unit and integration tests, especially for asynchronous code

• Collaborating directly with the client’s engineering team in London

What do we expect from you?

If you want real impact on systems that support the global financial market, this role is for you.

• 4–5+ years of commercial Scala experience

• Strong knowledge of Akka Actors & Akka Streams

• Hands-on experience with ZIO in production environments

• Practical experience with Apache Kafka and distributed systems

• Experience with testing asynchronous applications

• Knowledge of AWS/cloud environments

• Fluent English communication skills

Project Details

Tech stack

Tech Stack

• Scala
• Akka (Actors, Streams, HTTP)
• ZIO
• Apache Kafka
• Slick / PostgreSQL
• AWS (EC2, S3, SQS/SNS)

Contract

• EUR 38–44/h (B2B)
• 100% remote
• Long-term and stable fintech engagement

Why join?

• One of the most technically challenging Scala projects in Europe
• Real impact on systems supporting the global financial market
• International engineering environment with modern technologies