December 17, 2025

DevOps Engineer with Performance Testing experience

Senior • Remote

Białystok, Poland

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

Join us and spread your wings at the Tricentis & Performance Testing Competency Center.

As a performance team, we work with a wide range of technologies under test – from websites and APIs, through ERP systems, video streaming, and IoT, carrying out projects across various industries. We can also take pride in leveraging elements of artificial intelligence in performance testing.

We’re looking for a DevOps Engineer with strong Observability skills and a Performance mindset!

Join us to design and automate modern cloud environments, build monitoring and alerting frameworks, and support performance engineers with reliable and scalable infrastructure. If you’re passionate about DevOps, CI/CD, and Observability – let’s talk.

Your tasks

Design, build, and maintain scalable infrastructure for performance testing in cloud environments (AWS, Docker, Kubernetes)
Automate deployments and integrate testing processes into CI/CD pipelines (GitLab CI/CD)
Build, configure, and maintain monitoring and observability solutions (Prometheus, Grafana, InfluxDB)
Implement and optimize alerting and logging strategies to ensure system reliability and visibility
Support performance engineers by enabling the execution of performance tests (Locust, Gatling, K6) and providing the necessary infrastructure
Diagnose environment and infrastructure bottlenecks, recommend improvements for scalability and stability
Collaborate closely with DevOps, SRE, and Performance teams to drive reliability, automation, and system optimization
Apply basic programming skills (e.g., Python, Bash, Java) to support automation, integrations, and troubleshooting

Requirements

At least 5 years of professional experience in the area of DevOps or/and performance testing
Proven experience with Terraform, Docker, and AWS for building and maintaining scalable environments
Hands-on experience with GitLab CI/CD for pipeline automation and deployments, and ability to integrate testing processes into CI/CD workflows
Knowledge of build automation and deployment strategies for seamless software delivery
Proficiency in configuring and maintaining Prometheus, Grafana, and InfluxDB
Ability to diagnose and troubleshoot issues in distributed systems
Understanding of performance testing concepts and metrics (latency, throughput, error rates)
Ability to support execution of performance tests with Locust, Gatling, or K6
Very good command of English min. B2 level

What we offer

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

Join the Sii team – develop your skills, gain experience, and build your career!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."