Are you passionate about building secure, scalable infrastructure and driving automation in mission-critical environments? We are looking for a Senior DevOps Engineer to join Sigma Software and contribute to a challenging DefenceTech project focused on cloud resilience and operational reliability.
You will become part of a high-performing DevOps team of more than 30 specialists working with modern AWS infrastructure, Kubernetes environments, and Infrastructure as Code practices. This is a hybrid position based in Lviv.
We at Sigma Software offer opportunities to work on impactful projects, collaborate with experienced engineers, and grow professionally through access to cutting-edge technologies, knowledge sharing, and complex technical challenges.
CUSTOMER
Our Customer is a fast-growing Ukrainian DefenceTech company delivering innovative technology solutions for the defense and security domain. The team brings together experienced professionals from leading Ukrainian IT companies to work on highly important and mission-critical initiatives.
PROJECT
The project focuses on building resilient, secure, and scalable cloud infrastructure with a strong emphasis on backup strategies, disaster recovery, operational reliability, and infrastructure standardization. The environment includes AWS multi-account architecture, Kubernetes-based platforms, and Infrastructure as Code implemented with Terraform.
As a Senior DevOps Engineer, you will design and improve enterprise-grade backup and recovery solutions, automate operational workflows, validate recovery procedures against real RTO/RPO metrics, and contribute to strengthening the security and resilience of cloud infrastructure.
Key Technologies: AWS, Terraform, Kubernetes, Helm, Linux, Bash, Python, GitLab, AWS Backup, EKS
Job Description- Design, implement, and maintain scalable AWS-based infrastructure across multi-account environments
- Develop and support Infrastructure as Code solutions using Terraform modules and reusable configurations
- Configure and standardize backup and disaster recovery processes for cloud services and SaaS platforms
- Implement secure backup strategies including cross-account replication, encryption, Object Lock (WORM), and isolated backup environments
- Perform restore testing for databases and critical systems and validate real RTO/RPO indicators
- Create and maintain operational documentation, runbooks, and technical procedures in English
- Automate infrastructure and operational processes using Bash and/or Python
- Manage and support Kubernetes clusters and Helm deployments
- Monitor backup jobs and infrastructure reliability and configure alerting mechanisms
- Collaborate with internal DevOps teams through merge request workflows and infrastructure reviews
- Assess and improve cloud infrastructure resilience and security posture
- At least 5 years of commercial experience in DevOps, Cloud Infrastructure, or Site Reliability Engineering
- Strong hands-on experience with AWS services including Organizations, IAM, S3, RDS, AWS Backup, KMS, and EKS
- Deep understanding of AWS multi-account architecture and cloud security best practices
- Production-level experience with Terraform including modules, remote state management, and multi-environment deployments
- Strong practical experience with Kubernetes and Helm
- Solid Linux administration skills
- Experience with automation and scripting using Bash and/or Python
- Proven experience implementing backup and disaster recovery strategies in production environments
- Hands-on experience performing production data restoration and validating RTO/RPO metrics
- Experience writing technical documentation and operational runbooks in English
- Understanding of cloud security principles and infrastructure resilience practices
- At least an Intermediate level of English
WILL BE A PLUS
- Experience with GitLab APIs, export, and repository mirroring
- Experience with SaaS backup solutions
- Experience backing up Microsoft 365 environments
- Familiarity with security-focused or high-availability infrastructure environments
- Experience working in DefenceTech or other mission-critical domains
PERSONAL PROFILE
- Strong ownership mindset and ability to work independently in a high-responsibility environment
- Attention to detail and operational reliability
- Passion for automation, infrastructure resilience, and continuous improvement
Skills Required
- At least 5 years of commercial experience in DevOps, cloud infrastructure, or site reliability engineering
- Strong hands-on experience with AWS Organizations, IAM, S3, RDS, AWS Backup, KMS, and EKS
- Deep understanding of AWS multi-account architecture and cloud security best practices
- Production-level Terraform experience, including modules, remote state management, and multi-environment deployments
- Strong practical experience with Kubernetes and Helm
- Solid Linux administration skills
- Automation and scripting experience using Bash and/or Python
- Experience implementing backup and disaster recovery strategies in production environments
- Hands-on experience performing production data restoration and validating RTO/RPO metrics
- Experience writing technical documentation and operational runbooks in English
- Understanding of cloud security principles and infrastructure resilience practices
- At least Intermediate level of English
- Experience with GitLab APIs, export, and repository mirroring
- Experience with SaaS backup solutions
- Experience backing up Microsoft 365 environments
- Familiarity with security-focused or high-availability infrastructure environments
- Experience working in DefenceTech or other mission-critical domains
What We Do
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters
