Senior Site Reliability Engineer (f/m/x)

Expected, AWS, Kubernetes, DevOps, RCA (Root Cause Analysis)

Optional, Microsoft Azure, Python

About the project, We are looking for an experienced Senior Site Reliability Engineer to join our team and design, build, and operate a product-driven, highly automated multi-cloud provisioning platform. In this role, you will act as a core technical authority, driving automation and defining reliability standards while mentoring the engineering team. If you are passionate about engineering excellence and system reliability, this opportunity may be the right fit for you.

Your responsibilities, Architect and drive the reliability, scalability, and performance of our multi-cloud provisioning platform across all production stacks, Implement end-to-end automation pipelines to eliminate manual intervention and reduce technical toil, Define, monitor, and improve critical system health indicators (SLIs/SLOs) to make data-driven architectural recommendations, Collaborate with product and cross-functional engineering teams to embed reliability and security considerations early in the software development lifecycle (SDLC), Design robust incident detection mechanisms, triage critical incidents, and lead deep Root Cause Analysis (RCA) to implement long-term preventative engineering solutions, Audit platform operations to identify bottlenecks, eliminate single points of failure, and reduce structural complexity

Minimum 8 years of hands-on experience in Software Engineering, DevOps, or Systems Infrastructure, At least 3 years of advanced expertise with AWS, including architecting and troubleshooting cloud environments, Proven experience managing, scaling, and provisioning Kubernetes clusters in production, Demonstrated autonomy in making architectural decisions and delivering production-ready, automated infrastructure without daily supervision, Strong technical communication skills with the ability to align with Technical Leads and collaborate across engineering teams, Advanced level of English and residency in Poland

Optional, Experience with Microsoft Azure, Proficiency in Python

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

This is how we work on a project, Continuous Deployment, Continuous Integration

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 Sp. z o.o., Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 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., , 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.

This is how we work,