Senior Site Reliability Engineer

Oxylabs; Warszawa; On-site; PLN 290,160 - 379,440; Full time

Benefits offered by this job

Private health insurance

Gym allowance

Yearly workation

Latest tools and gadgets

Extra days off

Job summary

Oxylabs in Warsaw is looking for a talented infrastructure engineer to own and evolve their production infrastructure. You will be responsible for migrating to Kubernetes, ensuring high availability, and improving developer experiences across hundreds of servers and services.

A key part of the role involves participating in on-call rotations, leading incident resolution, and enforcing Infrastructure as Code practices. If you have experience managing CI/CD pipelines and leading infrastructure migrations, this is an exciting opportunity.

Qualifications

• Hands-on experience with Kubernetes in self-hosted environments.
• Ability to manage CI/CD pipelines end-to-end.
• Experience in leading infrastructure migrations.

Responsibilities

• Own and evolve Webshare's production infrastructure.
• Participate in on-call rotation alongside backend developers.
• Drive observability in cooperation with the development team.

Skills

Kubernetes

Infrastructure as Code

CI/CD pipelines

Scripting skills

Python

Go

Job description

What’s in store for you:

You’ll be solving complex challenges and maintaining our own infrastructure with 60PB+ monthly data traffic. Here are its scale and maturity in numbers:

• 60PB+ monthly data traffic through our systems

In this role, you’ll:

Own and evolve Webshare's production infrastructure - lead the migration from Docker Swarm to Kubernetes (or hybrid K8s + Ansible).

Maintain high availability across hundreds of servers and ~50 services.

Drive observability in cooperation with development team.

Establish and enforce IaC practices, CI/CD pipeline reliability, and change management processes.

Participate in the on‑call rotation alongside backend developers.

Respond to and lead incident resolution, run post‑mortems and drive systematic remediation.

Contribute platform tooling that improves developer experience and reduces infrastructure toil.

Keep backend engineers informed and capable — no silos, shared infrastructure ownership.

Have built and operated highly available infrastructure at comparable scale — hundreds of servers, dozens of services, real production load.

Hands‑on K8s in self‑hosted / bare‑metal environments.

Confident with Infrastructure as Code.

Have owned CI/CD pipelines end‑to‑end (GitLab CI or equivalent).

Have been on call in a production environment.

Proactive— surfaces problems before being asked, keeps the team informed without prompting.

Scripting and development skills.

Nice to have:

• Led at least one major infrastructure migration – planned, executed, and stabilised it.
• Python and/or Go familiarity – backend is Python, edge services are Go.
• Exposure to proxy, networking‑heavy infrastructure.
• Previous experience in a small team where developers shared infrastructure responsibility.
• Familiarity with edge clusters or split compute/edge architectures.

Salary & Benefits:

• Gross salary: 26 000 PLN/month – 34 000 PLN/gross. Keep in mind that we are open to discussing a different salary based on your skills and experience.
• Growth & Learning: 40+ internal learning options, external conferences, mentorship, and year‑round knowledge‑sharing.
• Health & Well‑being: Private health insurance, gym allowance and a wellness app.
• Celebration & Community: Team events, an overseas workation and plenty of ways to mark milestones together.
• We’ve put together a benefit package to make you feel taken care of and comfortable — so you can focus on growing as a professional and achieving wins. Check out the complete list here.

Learning Resources:

• Vast internal & external learning resources.
• Guilds, communities & 500+ professionals by your side.
• Tesonet network & knowledge sharing.

Celebration:

• Yearly workation.
• Year‑round internal & Tesonet community events.

Comfort:

• Cyber City office perks.
• Hybrid work (3 office days/ 2 WFH) & WFA options.
• Latest tools, gadgets & tech stack.
• Extra days off.
• Private health insurance.
• 24/7 gym.
• Physical well‑being specialists.
• Psychologist/psychotherapist sessions.
• Inclusive family‑related time‑off policy.