Remote Senior Scala Developer - Fintech Post-Trade

Scalac Inc.; Polska; Remote; PLN 361,000 - 542,000; Full time

Benefits offered by this job

Remote work

Job summary

Scalac Inc. is seeking a Senior Scala Developer for a FinTech post-trade project. The role offers 100% remote work with an international team and a focus on real-time financial data streaming.

You will design and build services using Akka, Kafka, and PostgreSQL while maintaining high reliability. Expect collaboration with engineers across regions and frequent knowledge sharing through internal sessions and meetups.

Qualifications

• 4–5+ years of commercial Scala experience.
• 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.
• Scala and ZIO familiarity.
• AWS (EC2, S3, SQS/SNS)

Responsibilities

• 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.

Skills

Scala

ZIO

Kafka

Testing async apps

AWS

Commercial Scala experience

Tools

Akka

Slick

PostgreSQL

Job description

• Senior Scala Developer (Fintech | Post-Trade)

Senior Scala Developer (Fintech | Post-Trade)

We need

4–5+ years of commercial Scala experience

Technologies

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.

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
• 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
• Scala
• ZIO
• AWS (EC2, S3, SQS/SNS)

Contract

• 100% remote
• Long-term and stable fintech engagement
• 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

A short introductory call to get to know each other. We’ll talk about your experience, expectations, availability, English level, and the basics of the project. You’ll also have space to ask questions about Scalac, the role, and how we work.

Get to know us better!

For 9 years, our international team of over 100 developers has been helping large and small companies (from FinTech, Blockchain, eCommerce sector) to develop their IT projects. We have helped customers like Kreditech, Bexio, Tapad, Qvantel, and Cryptonomic. We have a 5/5 score on Clutch.

Here you can find answers to the most common questions

If you work remotely, how do you keep track of employees' work hours?

We are using tools like Clockify, Spreadsheets – it depends on every project. We have information from our clients that they need our developers for the full-time/specific tasks. We are working following these guidelines entering a specific number of hours into a worksheet.

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Do we sign a contract for a specific project? What's next after the project ends?

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