Senior Infrastructure Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Infrastructure Engineer based in Poland. As a Senior Infrastructure Engineer, you will help design, build, and evolve the infrastructure that supports large-scale, customer-facing products. You will take end-to-end ownership of critical infrastructure systems, from architecture and implementation through production operations and continuous improvement. The role spans cloud architecture, deployment systems, observability, performance, security, and developer tooling. You will solve complex distributed-systems challenges while building reliable, scalable, secure, and cost-efficient platforms. Working closely with product engineering, security, and DevOps teams, you will help services prepare for continued growth and increasing workloads. You will also act as a technical leader, mentoring engineers and driving cross-team decisions through strong engineering practices and pragmatic problem-solving. Accountabilities - Own a core infrastructure product or subsystem end to end, including design, implementation, deployment, operation, and ongoing improvement. - Define project objectives and measurable success criteria, align technical initiatives with broader business goals, and proactively identify risks. - Translate product requirements and technical specifications into pragmatic designs that address important edge cases without unnecessary complexity. - Build and maintain secure, resilient, high-performing, and cost-efficient infrastructure supporting diverse applications and workloads. - Design, develop, and ship software and developer-facing tooling that improves engineering productivity and reduces operational toil.

- Manage infrastructure through code and configuration, primarily using Terraform, while maintaining consistency with broader architectural patterns. - Partner with product engineering teams to design services for scalability, resolve ambiguous technical requirements, and collaborate directly with stakeholders. - Participate in incident response and apply systematic debugging techniques to diagnose issues within your area and across interconnected services. - Improve monitoring and observability while using operational data to identify opportunities for better stability, performance, and reliability. - Apply a security-first mindset to infrastructure and software development, proactively identifying vulnerabilities in your own work and during peer reviews. - Serve as a technical resource for complex infrastructure challenges and mentor engineers through code reviews, pairing, and design discussions. - Facilitate collaboration across engineering and other stakeholder groups on technical architecture, processes, and infrastructure priorities. Requirements - 6–10 years of experience in infrastructure, platform, or backend engineering within primarily cloud-based environments, preferably AWS. - Demonstrated experience owning a significant product, platform component, or subsystem from initial design through production operation and ongoing evolution. - T-shaped technical expertise, with deep specialization in one or two infrastructure domains combined with enough breadth to navigate and contribute across the wider technology stack. - Strong hands-on experience managing infrastructure through code and configuration using Terraform or an equivalent infrastructure-as-code solution. - Deep understanding of cloud infrastructure fundamentals, including networking, load balancing, containerization, Kubernetes/EKS, and distributed systems. - Strong programming skills in Go, Python, or a comparable language, with the ability to build and maintain production-ready software.