Senior On-Prem CI/CD Infra Engineer | Linux & Networking

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.

Project Overview & Engagement Profile

The cooperation involves maintaining, scaling, and optimising core on-premise infrastructure for a major global investment bank. The primary focus centers on driving the reliability and efficiency of essential developer tools and services — including Jenkins, BitBucket, and BuildBarn — for an on-prem installation serving a user base of over 10,000 developers. The delivery of services relies on strong system administration, deep networking knowledge, and automation. While 99% of the infrastructure is Linux-based, cross-ecosystem support covering Linux, Windows, and macOS environments is required. For engagements at a Senior level, the scope extends to leading the diagnosis and resolution of complex performance bottlenecks across this large-scale infrastructure.

Networking (Firewalls, DNS, VPC/VLANs) Advanced

Jenkins / Bitbucket / BuildBarn Advanced

Python Regular

CI/CD Regular

PowerShell / Windows administration: Regular

Required Expertise and Capabilities:

Solid background in Linux administration and a deep understanding of networking concepts.

At least 5 years of commercial experience in system administration or infrastructure engineering.

Hands-on experience in managing and optimising on-premise developer tools (such as Jenkins, BitBucket, and BuildBarn).

Proficiency in scripting languages (Bash and Python; basic knowledge of PowerShell is an asset) for automating administrative tasks.

Strong analytical skills for diagnosing, troubleshooting, and solving system performance problems at scale.

Capability to provide multi-platform environment support (primarily Linux, with secondary support for Windows and macOS).

Commercial experience operating within large-scale Enterprise or financial environments is highly preferred.

English language proficiency at a minimum [B2/C1] level, ensuring seamless technical communication.

A few perks of being with us

Building tech community

Home office reimbursement

Training Package

Virtusity / in-house training

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

Apply now

Full name *

Email *

Phone number *

CV/Resume * File upload Accepted file types: pdf, Max. file size: 5 MB. 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*.

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*.

Yes

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*.

Yes

No

Are you interested in specific tech stack/domain/project? Let us know!

It doesn't mean that you don't match. Tell us about yourself and let us work on it together.