Senior System Administrator

Company Description
With 15+ years of experience in IT, global partners and clients, Energize Global Services (EGS) is a solid, leading-edge Technology Company focused on delivering software services and products for the Banking and Financial Management Industry. We are specialized in developing Banking Systems, all types of payment solutions and other large applications. Over the years EGS proved to be a reliable and trusted partner for the biggest player in the Financial technology industry. Join our team in Yerevan, elevate your career to a new level by becoming part of a team that is shaping the future of Fintech.

Job Description
We are seeking a highly skilled Senior Systems Administrator to join our team. In this pivotal role, you will be responsible for maintaining our on-premises, multi-tenant Exchange Server 2013 environment and leading the transition to Microsoft Cloud. You will manage our ESXi infrastructure, enforce robust firewall configurations, and administer Linux server environments. The ideal candidate is a strategic thinker and proactive problem-solver with extensive technical expertise in both on-premises and cloud-based systems.

Qualifications

• 5+ years in systems administration, with hands-on experience in Exchange Server 2013, ESXi infrastructure, and Linux server environments.
• Expertise in Exchange Server 2013 and Microsoft cloud services.
• Strong proficiency in VMware ESXi infrastructure.
• Experience configuring and managing Next-Generation Firewalls.
• Advanced skills in Linux server administration and troubleshooting.
• Relevant certifications such as VMware VCP, Microsoft Certified, and CompTIA Linux+ are preferred but not required.
• Excellent analytical, problem-solving, and communication skills, with the ability to work independently and collaboratively in a team environment.

Key Responsibilities

• Oversee the maintenance and troubleshooting of our multi-tenant Exchange Server 2013 environment while preparing for a structured migration to Microsoft Cloud.
• Administer and optimize our ESXi infrastructure to ensure high availability, scalability, and performance across all virtual environments.
• Manage the Active Directory (AD) infrastructure, ensuring seamless integration with existing systems, enforcing security policies, and maintaining user accounts and access permissions.
• Configure, monitor, and maintain Next-Generation Firewalls to safeguard network security and ensure compliance with best practices.
• Administer, update, and secure Linux server environments, ensuring optimal performance and reliability.
• Manage and configure Trellix anti-malware software for endpoint protection, ensuring our systems remain secure against evolving malware threats.
• Administer Windows SCCM (System Center Configuration Manager) for effective patch management, ensuring timely updates and security compliance across Windows environments.
• Collaborate with cross-functional teams to strategize and implement a seamless transition from on-premises Exchange to Microsoft Cloud solutions.
• Implement and manage system monitoring tools to maintain system health, proactively identifying and resolving issues before they impact operations.

Additional Information

Join us to be part of a dynamic team that values innovation and collaboration. We offer competitive compensation, opportunities for professional growth, and a supportive work environment. If you are a motivated and experienced systems administrator ready to take on new challenges, we would love to hear from you!

We are looking for a
Senior to Staff Infrastructure Engineer
to lead the design and evolution of large-scale, multi-GPU compute infrastructure used to train next-generation robotics and AI models. This role sits at the intersection of DevOps, MLOps, and distributed systems — owning architecture, reliability, and performance at scale in a fast-moving, cutting-edge environment.

Responsibilities

• Lead architecture and long-term technical direction of multi-GPU, cross-cloud training platforms
• Build and evolve infrastructure-as-code for provisioning, orchestration, and lifecycle management
• Architect and improve CI/CD systems for infrastructure and ML training workflows
• Optimize distributed training workloads — scheduling, resource utilization, observability
• Partner with ML engineers and researchers to enable efficient experimentation and productionization
• Mentor engineers and drive operational excellence across the org
• Document architecture, systems, and key technical decisions

Requirements

• Production-grade Kubernetes experience (CKA preferred)
• Hands-on Terraform (infrastructure-as-code)
• Kubernetes packaging and release management via Helm
• AWS cloud operations experience
• CI/CD pipeline experience including self-hosted runners (GitHub Actions)
• Prometheus/Grafana monitoring and alerting
• Linux administration, containerization, scripting (Python & Bash)
• Availability for on-call rotation

Nice to have

• GPU-accelerated Kubernetes clusters (NVIDIA)
• Cluster autoscaling (Karpenter)
• Workflow orchestration (Prefect)
• Gang scheduling, fair-share resource allocation
• High-performance storage (FSx for Lustre, EFS)

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

About Us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

We are looking for an IT Infrastructure & Hardware Engineer responsible for the reliability and stability of the technical environment of the live casino studio.

The role covers servers, networking, system services, and physical technical infrastructure supporting 24/7 studio operations. The engineer ensures continuous availability of internal platforms, connectivity, and operational hardware required for uninterrupted live gaming.

This is a hands-on position combining infrastructure administration with on-site technical support and incident resolution.

We are looking for an IT Infrastructure & Hardware Engineer responsible for the reliability and stability of the technical environment of the live casino studio.

The role covers servers, networking, system services, and physical technical infrastructure supporting 24/7 studio operations. The engineer ensures continuous availability of internal platforms, connectivity, and operational hardware required for uninterrupted live gaming.

This is a hands-on position combining infrastructure administration with on-site technical support and incident resolution.

Requirements

• Experience in 24/7 operational environments
• Experience in streaming or real-time systems
• Cloud or hybrid infrastructure knowledge
• English language knowledge (B2 and higher)
• Experience in 24/7 operational environments
• Experience in streaming or real-time systems
• Cloud or hybrid infrastructure knowledge
• English language knowledge (B2 and higher)

Responsibilities
Network Operations

• Configure and maintain switches, VLANs, and routing
• Monitor latency, packet loss, and connectivity stability
• Troubleshoot infrastructure connectivity incidents
• Coordinate with ISPs and external providers when required
• Ensure network readiness for real-time operations

Hardware & Technical Infrastructure

• Maintain operational PCs and technical racks
• Support deployment of new equipment and expansions
• Maintain structured cabling and patch panels
• Install and route network, power, and signal cables
• Install and mount cameras and related hardware equipment
• Connect and integrate peripherals and technical devices
• Diagnose and repair hardware-related operational issues

Incident Response & Reliability

• Act as escalation point for complex technical failures
• Perform root cause analysis and implement preventive solutions
• Maintain operational documentation
• Ensure high availability of critical systems

Infrastructure & Systems

• Maintain on-premise servers and system services
• Manage virtualization platforms (VMware / Hyper-V / Proxmox or similar)
• Monitor system performance and uptime
• Maintain backup and disaster recovery readiness
• Manage storage and shared resources
• Support identity and authentication services

Network Operations

• Configure and maintain switches, VLANs, and routing
• Monitor latency, packet loss, and connectivity stability
• Troubleshoot infrastructure connectivity incidents
• Coordinate with ISPs and external providers when required
• Ensure network readiness for real-time operations

Hardware & Technical Infrastructure

• Maintain operational PCs and technical racks
• Support deployment of new equipment and expansions
• Maintain structured cabling and patch panels
• Install and route network, power, and signal cables
• Install and mount cameras and related hardware equipment
• Connect and integrate peripherals and technical devices
• Diagnose and repair hardware-related operational issues

Incident Response & Reliability

• Act as escalation point for complex technical failures
• Perform root cause analysis and implement preventive solutions
• Maintain operational documentation
• Ensure high availability of critical systems

Infrastructure & Systems

• Maintain on-premise servers and system services
• Manage virtualization platforms (VMware / Hyper-V / Proxmox or similar)
• Monitor system performance and uptime
• Maintain backup and disaster recovery readiness
• Manage storage and shared resources
• Support identity and authentication services

• Krisp
• Երևան
• 2 ամիս առաջ
• Ամբողջ դրույք

Աշխատանքի Նկարագրություն

As a Senior DevOps Engineer you will be deeply involved in various high-impact projects for the company. This typically means hands-on work on systems such as in-house CI/CD, on-prem ML data center infrastructure, AWS, Azure, Google Cloud based solutions and more. You’ll be involved in server and tool selection processes and configuration for ML and production projects. You’ll also work on infrastructure that powers our ML research, on-prem GPU clusters to multi-cloud training pipelines.

What you'll do

Design architectures and lead server selection and on-prem setup

Administer Linux servers, networking, and storage across our on-prem infrastructure

Diagnose and resolve intermittent or hard-to-reproduce issues on on-prem tower servers, especially cases that vendor technicians are unable to replicate

Troubleshoot and fix issues across cloud infrastructure

Administer identity and device management platforms

Work closely with our software architects to develop and maintain cloud architectures across projects

Own cloud workloads end-to-end — deployment, scaling, high availability, and monitoring — across platforms such as ECS and EKS

Design, implement, and maintain CI/CD pipelines (Jenkins, GitHub Actions)

Develop scripts to automate routine tasks

Manage patching and security across systems, and integrate security tools into our infrastructure.

What we are looking for

Must-have
5+ years of hands-on DevOps experience across on-prem and cloud infrastructure

Strong Linux system administration skills

Experience designing CI/CD pipelines with Jenkins and GitHub Actions

Proficiency with scripting languages (bash, Python, or similar) for automation

Hands-on experience with Infrastructure-as-Code tools (Terraform and/or Ansible)

Production experience with containers and orchestration (Docker, Kubernetes)

Working experience with at least one major cloud provider (AWS, Azure, or GCP)

Solid fundamentals in networking (TCP/IP, DNS, subnetting, VPNs, firewalls). Experience with MP-BGP, EVPN, VXLAN, or similar technologies is a strong plus.

Strong analytical and troubleshooting skills, with the ability to communicate clearly in English

Strong proficiency of using Claude Code and AI assisted coding workflows.

Nice-to-have
Knowledge of HPC and job schedulers (Run:ai, Determined, etc.)

Familiarity with ML infrastructure or supporting ML / data science teams

Experience with server hardware selection and procurement

Experience hosting and managing application testing services (Citrix, VMware Horizon, Squid Proxy, etc.)

Security tooling integration and patch management at scale

BSc / MSc in Computer Science or related field.

Մասնագիտական հմտություններ

• Networking
• DevOps
• AWS
• Linux
• CI/CD
• Terraform

Անձնական հմտություններ

• Ինքնուրույն աշխատելու ունակություն
• Բանակցելու հմտություններ
• Գրավոր հաղորդակցման հմտություններ
• Պատասխանատվության զգացում
• Ժամկետները պահպանելու ունակություն
• Դիմել հիմա
• Հաղորդագրություն

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