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Scala Engineer (Expert)

Scala Engineer (Expert)
B2B26 000 - 31 000 PLN NET
LOCATION + Remote Poland: Kielce, Kraków, Wrocław
Apply now

VirtusLab is a leading European software consulting and engineering company, home to over 350 EU-based professionals. Our mission is to craft clean code and practical solutions with precision and purpose.

We foster a dynamic culture rooted in strong engineering, a sense of ownership, and transparency, empowering our team. As part of the expanding VirtusLab Group, we offer a compelling environment for those seeking to make a substantial impact in the software industry within a forward-thinking organization.

If you’re unsure whether you meet all the requirements, we still want you to apply. What matters most is your passion and willingness to develop. We prefer B2B, but it does not have to be the only form of cooperation. Apply and find out!

About the role

  • Design and develop a high-performance object- and graph-oriented framework in Scala
  • Work closely with JVM internals, Scala compiler, and low-level Java to optimize runtime behavior
  • Solve complex problems in concurrent computing, graph processing, and compile-time tooling
  • Analyze performance trade-offs across memory allocation, concurrency models, and compilation strategies
  • Write clean, efficient code with a focus on scalability and maintainability
  • Collaborate with internal tooling teams to ensure seamless integration across systems
  • Contribute to team discussions by clearly communicating technical ideas and solutions
  • Participate in code reviews and provide constructive feedback to peers
  • Continuously improve the framework based on usage by 1000+ engineers worldwide
JVM Advanced
Scala Basic
Performance Optimization Advanced
Kotlin Nice to have
C++ Nice to have
English Advanced
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Project Scope

The project builds a high-performance framework in Scala focused on object and graph-oriented computing. It integrates deeply with JVM internals and the Scala compiler to solve complex challenges in concurrency, memory allocation, and graph processing. Designed for scalability and efficiency, the framework supports over 1000 engineers globally.

Tech Stack

Scala 2.13, JVM, Java (21 with planned migration to 25), C++, performance optimisation and testing

Team

The team consists of over 10 experienced engineers distributed across North America, Europe, and Asia. They bring deep expertise in Scala, JVM internals, and performance optimization, working closely under a UK-based Project Manager.

Open positions in this project
  • Scala Engineer (Expert)
  • Scala Engineer (Senior)

What we expect

  • Write high-performance Scala code with a strong focus on runtime efficiency and memory management
  • Work confidently with JVM internals, Java (21+), and low-level system behavior
  • Apply compile-time or metaprogramming techniques such as macros, compiler plugins, or bytecode manipulation
  • Tackle complex problems in concurrency and graph algorithms with practical, scalable solutions
  • Optimize performance through careful trade-off analysis across compilation and execution layers
  • Communicate technical ideas clearly within a distributed team environment
  • Collaborate effectively with peers to maintain a high standard of engineering quality

Nice to have

  • Experience with C++ for performance-critical components
  • Familiarity with annotation processors or advanced Java tooling

A few perks of being with us

Building tech community
Building tech community
Flexible hybrid work model
Flexible hybrid work model
Home office reimbursement
Home office reimbursement
Language lessons
Language lessons
MyBenefit points
MyBenefit points
Private healthcare
Private healthcare
Training Package
Training Package
Virtusity / in-house training
Virtusity / in-house training
And a lot more!

Apply now

Scala Engineer (Expert)

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Current recruitment process: For the purpose of recruitment, I hereby give consent as per art. 6.1.a of the GDPR to processing of my personal data (other than that listed in art. 22 [1] § 1 Labour Code) by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at 23 Zofii Nałkowskiej Street, Rzeszów, 35-211. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that my personal data will be kept for the duration of the recruitment process and as regards any potential claims, for the period of 36 months maximum, and that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any time, but this withdrawal does not make the previous processing illegal*.(Required)*

Current recruitment process: For the purpose of recruitment, I hereby give consent as per art. 6.1.a of the GDPR to processing of my personal data (other than that listed in art. 22 [1] § 1 Labour Code) by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at 23 Zofii Nałkowskiej Street, Rzeszów, 35-211. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that my personal data will be kept for the duration of the recruitment process and as regards any potential claims, for the period of 36 months maximum, and that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any time, but this withdrawal does not make the previous processing illegal*.

(Required)
Future recruitment processes: I hereby give consent as per art. 6.1.a of the GDPR to the processing of my personal data by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at 23 Zofii Nałkowskiej Street, Rzeszów, 35-211, in order to use this data in future recruitment processes. I hereby agree to possible storage of my personal data for this purpose in Virtus Lab’s database for a period of 36 months maximum. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any point, but this does not make the previous processing illegal*.

Future recruitment processes: I hereby give consent as per art. 6.1.a of the GDPR to the processing of my personal data by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at 23 Zofii Nałkowskiej Street, Rzeszów, 35-211, in order to use this data in future recruitment processes. I hereby agree to possible storage of my personal data for this purpose in Virtus Lab’s database for a period of 36 months maximum. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any point, but this does not make the previous processing illegal*.

Paulina Radzimowska
Coordinated by
Paulina Radzimowska
Senior IT Talent Acquisition Specialist
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Scala Engineer (Expert)
B2B26 000 - 31 000 PLN NET
LOCATION + Remote Poland: Kielce, Kraków, Wrocław
Apply now
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