Are you a skilled Infrastructure Engineer looking to work on a high-impact, large-scale solution? Join our team at Sigma Software and help build and maintain a robust hybrid IT infrastructure for a cutting-edge access control and construction site management platform used across Europe.
This is a middle-level role with a remote work setup, offering the opportunity to collaborate with a highly experienced international team and contribute to a product that shapes the future of construction site security and operations.
We at Sigma Software value innovation, professional growth, and teamwork. You will be part of a long-term project with strong support for career development, where your dedication and expertise will be recognized and rewarded.
 

CUSTOMER

Our customer is a leading Scandinavian construction solutions provider, recognized as one of the biggest players in the Swedish market. With over 50 specialists in the overall development squad, including 32 team members in Ukraine, they have evolved from a smart-lock product to a comprehensive server-based solution with multiple self-developed web and mobile applications. Their focus is on expanding services across Scandinavia and Europe, delivering advanced security, access control, and site management innovations.

PROJECT

The project is a large-scale, complex access control system for the European construction domain. It goes beyond access control, offering advanced site management capabilities, real-time monitoring of worker presence, and tools for managing relationships between multiple companies operating within a site.

• Administer and support hybrid IT infrastructure (primarily on-premises, with selected workloads in Microsoft Azure)
• Install, configure, harden, and maintain Windows Server environments (2016–2022)
• Manage on-premises Active Directory, Group Policy, DNS, DHCP, and other core Windows services
• Perform basic administration of Azure infrastructure components (VMs, Virtual Networks, routing, Load Balancer, VPN connectivity, DNS, RBAC, monitoring)
• Administer and troubleshoot Microsoft SQL Server, including backup strategies, restore procedures, and performance optimization
• Manage Debian-based Linux servers hosting infrastructure services (e.g., Redis/Kafka)
• Support and troubleshoot containerized services on Linux hosts using Docker Compose
• Design, implement, and maintain infrastructure monitoring and alerting
• Administer and troubleshoot network services (routing, DNS, DHCP, SMTP, VPN)
• Manage source control systems (TFS / Azure DevOps Server, Git)
• Automate infrastructure operations using PowerShell
• Investigate incidents, perform root cause analysis, and implement preventive measures
• Maintain technical documentation and operational standards
• Collaborate with internal teams and customers to resolve issues and improve systems

• At least 3 years of Windows Server administration (2016–2022) experiecne in production environments
• Strong knowledge of Active Directory, Group Policy, DNS
• Experience with Azure IaaS/networking
• Solid SQL Server administration and troubleshooting skills
• Working knowledge of Debian-based Linux administration
• Practical experience with Docker on Linux (multi-host, Docker Compose)
• Experience with source control systems (TFS / Azure DevOps Server, Git)
• Strong troubleshooting mindset and networking fundamentals
• PowerShell scripting skills
• Ability to produce clear technical documentation
• Strong communication skills and independent work capability

WILL BE A PLUS

• Experience with monitoring/telemetry platforms (Zabbix, PRTG, Azure Monitor, Prometheus/Grafana, ELK/Loki)
• Azure DevOps pipelines and integrations
• Redis/Kafka administration experience
• Familiarity with HA patterns for containerized services
• Experience with virtualization platforms (Hyper-V)

PERSONAL PROFILE

• Strong analytical and troubleshooting skills
• Structured, process-oriented mindset
• Attention to detail and quality-first approach
• Independent ownership of infrastructure tasks
• Clear communication with technical teams and customers