Sigma Software

Global software development and IT consulting

Senior/Lead DevOps Engineer

Platform EngineeringConfirmed live in the last 24 hours

Full-timeWarsaw, PolandNo salary listedRemote

About the Job

Requirements

At least 5 years of commercial DevOps Engineer experience in enterprise environments.
Deep expertise in Kubernetes administration, networking, and security.
Experience with Infrastructure as Code tools such as Terraform.
Hands-on experience with AWS and/or Azure cloud platforms.
Experience implementing GitOps practices using ArgoCD or similar tools.
Strong Linux administration and troubleshooting skills.
Experience with CI/CD automation and software delivery pipelines.
Knowledge of secrets management solutions such as OpenBAO or HashiCorp Vault.
Experience with identity and access management solutions such as Keycloak.
Understanding of infrastructure security, CIS benchmarks, and platform hardening.
Experience working with production enterprise infrastructure environments.
Ability to work independently and make technical decisions.
Experience communicating directly with customers and stakeholders.
Upper-intermediate or higher level of English.
Strong ownership mindset and ability to lead technical initiatives.
Ability to work effectively in ambiguous and evolving environments.
Structured and proactive approach to problem-solving.
Ability to prioritize tasks and manage multiple responsibilities.
Strong collaboration skills within distributed teams.
Leadership mindset focused on delivery and quality.

Responsibilities

Design, implement, and maintain enterprise-grade Kubernetes platforms and cloud infrastructure.
Lead infrastructure delivery activities from discovery through production rollout.
Make architectural and technical platform decisions aligned with customer requirements.
Automate infrastructure provisioning and configuration management using Infrastructure as Code practices.
Implement and maintain CI/CD pipelines and GitOps workflows.
Configure and support secure cluster operations, secrets management, and platform hardening.
Collaborate directly with customers, vendors, and external stakeholders during technical workshops and solution discussions.
Analyze existing infrastructure environments and identify optimization opportunities.
Prepare technical proposals, implementation plans, estimates, and delivery roadmaps.
Troubleshoot production environments and perform root cause analysis.
Support compliance, security, and operational readiness requirements for government environments.
Mentor engineers and contribute to technical leadership within the team.

Desired Qualifications

Experience with OKD or OpenShift administration.
Experience with Ceph storage solutions.
Knowledge of Helm packaging and customization.
Experience with air-gapped environments and restricted infrastructure.
Experience with vSphere administration.
Experience delivering solutions to external hosting providers.
Background in government, eGov, or registry-based systems.
Understanding of compliance and operational requirements in public sector environments.

Job Description

Design, implement, and maintain enterprise-grade Kubernetes platforms and cloud infrastructure
Lead infrastructure delivery activities from the discovery phase through production rollout
Make architectural and technical platform decisions aligned with Customer requirements
Automate infrastructure provisioning and configuration management using Infrastructure as Code practices
Implement and maintain CI/CD pipelines and GitOps workflows
Configure and support secure cluster operations, secrets management, and platform hardening
Collaborate directly with Customers, vendors, and external stakeholders during technical workshops and solution discussions
Analyze existing infrastructure environments and identify optimization opportunities
Prepare technical proposals, implementation plans, estimates, and delivery roadmaps
Troubleshoot production environments and perform root cause analysis
Support compliance, security, and operational readiness requirements for government environments
Mentor engineers and contribute to technical leadership within the team

Qualifications

5+ years of commercial experience as a DevOps Engineer in enterprise environments
Deep expertise in Kubernetes administration, networking, and security
Experience with Infrastructure as Code tools such as Terraform
Hands-on experience with AWS and/or Azure cloud platforms
Experience implementing GitOps practices using ArgoCD or similar tools
Strong Linux administration and troubleshooting skills
Experience with CI/CD automation and software delivery pipelines
Knowledge of secrets management solutions such as OpenBAO or HashiCorp Vault
Experience with identity and access management solutions such as Keycloak
Understanding of infrastructure security, CIS benchmarks, and platform hardening
Experience working with production enterprise infrastructure environments
Ability to work independently and make technical decisions
Experience communicating directly with Customers and stakeholders
Strong analytical and problem-solving skills
Upper-Intermediate or higher level of English

WILL BE A PLUS

Experience with OKD or OpenShift administration
Experience with Ceph storage solutions
Knowledge of Helm packaging and customization
Experience with air-gapped environments and restricted infrastructure
Experience with vSphere administration
Experience delivering solutions to external hosting providers
Background in government, eGov, or registry-based systems
Understanding of compliance and operational requirements in public sector environments

Additional Information

PERSONAL PROFILE

Strong ownership mindset and ability to lead technical initiatives
Ability to work effectively in ambiguous and evolving environments
Excellent communication and stakeholder management skills
Structured and proactive approach to problem-solving
Ability to prioritize tasks and manage multiple responsibilities
Strong collaboration skills within distributed teams
Leadership mindset with focus on delivery and quality

About the Company

Sigma Software

Global software development and IT consulting

Sigma Software provides software development services and IT consulting to more than 170 clients worldwide. It builds large-scale software solutions and guides startups from concept to a ready product, across industries such as banking, automotive, advertising, telecommunications, cybersecurity, gaming, aviation, real estate, and healthcare. The company works by deploying teams of skilled engineers and consultants, delivering projects through global delivery centers and emphasizing clear communication, flexibility, and alignment with clients’ business goals. Sigma Software differentiates itself with recognition as a top outsourcing firm (IAOP World’s Top 100 Outsourcing), a wide geographic footprint, and the ability to take projects from idea through production for both established enterprises and startups. Its goal is to help clients achieve their business objectives by delivering reliable software products and expert IT advice on time and within scope.

Company size: 1,001-5,000
Company stage: Not listed
Total funding: Not listed
Headquarters: Stockholms kommun, Sweden
Founded: 2002

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