Senior DevOps Engineer – Large-Scale Infrastructure

Sii Sp. z o.o.; Katowice; Hybrid; PLN 240,000 - 360,000; Full time

Job summary

A leading technology consulting firm in Poland seeks a Senior DevOps professional. You will manage large-scale Kubernetes and AWS infrastructure, automate processes, and ensure system reliability and security. Applicants should have 5+ years of experience and strong English skills. The position offers flexible working arrangements and an attractive benefits package.

Benefits

Private healthcare

Benefits cafeteria platform

Car discounts

Investment in training and growth

Qualifications

• 5+ years of experience in senior DevOps, SRE, or infrastructure engineering.
• Experience managing large-scale production environments (Kubernetes clusters, servers).
• Strong expertise in AWS infrastructure with automation and patching at scale.

Responsibilities

• Operate and optimise large-scale Kubernetes clusters and AWS infrastructure.
• Automate patching, vulnerability remediation, and deployments.
• Ensure security and compliance through encryption and governance policies.

Skills

AWS

Kubernetes

Automation

Security & Compliance

GitOps practices

Proficient English communication

Tools

Argo CD

Job description

Technologies we use

Expected

• AWS
• IaC
• Security & Compliance Tooling

Optional

• Grafana
• Ansible

About the project

We are seeking a senior DevOps professional who excels in large-scale environments, embraces automation, and understands how to maintain the reliability and security of critical systems. If building resilient, cloud-native infrastructure in AWS and Kubernetes sparks your interest, this is your chance to make a meaningful impact.

You’ll join a project for a global leader in cloud communications – a company recognised worldwide for its APIs powering voice, video, and messaging. Together, we design, automate, and secure platforms spanning dozens of Kubernetes clusters and hundreds of thousands of servers.

Join Sii and help shape the backbone of a platform trusted worldwide!

Your responsibilities

• Operate and optimise large-scale Kubernetes clusters and AWS infrastructure
• Automate patching, vulnerability remediation, and deployments using Argo CD and related tools
• Build and maintain golden images, lifecycle policies, and data retention strategies
• Ensure security and compliance through encryption, backup management, and governance policies
• Collaborate with engineering and operations teams to keep platforms highly available, scalable, and resilient

Our requirements

• At least 5+ years of experience in a senior DevOps, SRE, or infrastructure engineering role
• Proven track record in managing large-scale production environments (tens of Kubernetes clusters, hundreds of thousands of servers)
• Strong expertise in AWS infrastructure, including automation, patching at scale, and building resilient systems
• Hands-on experience in creating and managing infrastructure components such as golden images, lifecycle policies, backups, volume encryption, backup encryption, and data retention policies, along with Kubernetes and GitOps practices (e. g. , Argo CD)
• Proficient English communication skills (B2/C1) for collaboration in an international environment
• Residing in Poland required

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 – you can change them thanks to Job Changer application
• 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

Recruitment stages

• Send your CV
• Talk to us about your expectations
• Learn more about our projects and choose the best
• Start your adventure with Sii!

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment.