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Build Engineer (Senior)

Build Engineer (Senior)
B2B140 - 170 PLN NET PER HOUR
LOCATION + Remote Poland: Kielce, Kraków, Wrocław
Apply now

VirtusLab is a leading European software consulting and engineering company. 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 professionals to make a substantial impact in the software industry.

About the role

Scripting (Bash/Scala) Advanced
CI/CD (GitHub Actions preferred) Advanced
Build Tools (sbt) Nice to have
English Advanced
View available projects
Project
Build migration & Open Source Transition
Project Scope

The project involves managing a large-scale CI/CD infrastructure currently transitioning its build system to an Open Source model. The existing environment is hosted on Azure and utilizes CircleCI. The objective is migrating this entire ecosystem to GitHub Actions, merging private repositories into public ones to foster community collaboration.

This is a high-stakes environment supporting over 40 developers where “every minute counts.” The CI pipeline is large-scale – a single test run utilizing up to 30 machines – making performance and reliability critical success factors.

Challenges

  • Strategic Migration: Architecting and executing the transition from CircleCI to GitHub Actions.

  • Scalability at Scale: Managing a complex CI handling 30-machine parallel test runs and optimizing it for maximum speed.

  • Repository Consolidation: Merging codebases into public Open Source repositories.

  • Ownership & Strategy: Providing end-to-end consulting, delivering the technical plan, testing solutions, and adjusting the strategy to ensure the final success of the migration.

Tech stack

CircleCI, GitHub Actions, Bash, Scala, sbt, Azure

Core Scope of Expertise & Requirements

    • 5+ years of commercial experience in backend, DevOps, or platform engineering.

    • Proven track record in developing solutions centered around building tools, maintaining robust CI/CD pipelines, and optimizing the software development lifecycle.

    • Practical knowledge of Bazel or at least one other major build tool.

    • Deep understanding of the JVM ecosystem and related tooling/languages.

    • Strong communication skills combined with a pragmatic, results-oriented approach to problem-solving.

    • Seamless collaboration within a cross-functional, agile project environment.

    • Proactive problem-solving and efficient communication within the project ecosystem to ensure smooth delivery.

    • Flexibility regarding specific technologies (beyond JVM tools), with high value placed on a strong interest in build tools and maximizing developer productivity.

    • High autonomy in task execution, self-management, and independent delivery driving.

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
Access to the above perks is optional and completely voluntary for B2B contractors

Apply now

Build Engineer (Senior)

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Please submit a CV no longer than two pages.
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 Szlak 49 Street, 31-153 Cracow. 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 Szlak 49 Street, 31-153 Cracow. 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 Szlak 49 Street, 31-153 Cracow, 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 Szlak 49 Street, 31-153 Cracow, 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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Build Engineer (Senior)
B2B140 - 170 PLN NET PER HOUR
LOCATION + Remote Poland: Kielce, Kraków, Wrocław
Apply now
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