Scala Engineer (Expert)

Scala

Scala Engineer (Expert)

Scala
Szlak 49, Kraków +2 Locations

VirtusLab

Full-time
B2B
Senior
Remote
7 073.79 - 8 434.14 USD
Net per month - B2B

Job description

We are #VLteam – tech enthusiasts constantly striving for growth. The team is our foundation, that’s why we care the most about the friendly atmosphere, a lot of self-development opportunities and good working conditions. Trust and autonomy are two essential qualities that drive our performance. We simply believe in the idea of ​​“measuring outcomes, not hours”. Join us & see for yourself!


Smart Contracts - Scala & Algorithms


Project Scope

We are working on the project together with a partner from the Smart Contracts industry. We are developing our own language for defining contracts, ensuring consistency and security of transactions, as well as infrastructure for their launch. We are also creating components that enable the integration of the above-mentioned language with new and existing solutions in the area of Distributed Ledger Technology (DLT). The work is divided between several teams responsible for individual components and the performance of the solution. The product is used by large international companies in the financial industry.

This role specifically involves improving algorithmic performance and stack safety in transaction processing.

Apart from Scala proficiency, you must have a strong background in algorithms and data structures together with good JVM understanding.


Challenges

You’ll be responsible for implementing algorithmic performance and safety improvements, such as:

  • ensuring stack safety and maximum performance of recursive method calls in transaction processing, 

  • measure, identify and resolve bottlenecks in transaction processing,

  • …with other critical algorithmic performance improvements over complicated data structures to follow.

You will be working closely with a highly skilled core team, so this is also an opportunity to learn and grow, improving critical parts of a large productive system.


Tech stack

Scala, algorithms, data structures, JVM


What we expect in general

  • Strong proficiency in Scala and its ecosystem.

  • Strong understanding of algorithms, data structures, and software performance.

  • Strong communication skills and the ability to convey complex technical concepts clearly.

  • A pragmatic approach to problem-solving, balancing technical excellence with real-world constraints.

  • Ability to work effectively within a team, contributing to a collaborative and high-performance engineering culture.

  • Good command of English (B2/C1).


Tech stack

    English

    B2

    Scala

    advanced

    Cryptography and algorithms

    regular

    Security

    junior

Office location

Published: 21.02.2026

About the company

VirtusLab

Join the VLteam and elevate your career to new heights! Join us in shaping the future of software engineering with a team that values flexibility, fosters an open-minded culture, and delivers outstanding solutions. We ha...

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