Senior DevOps Engineer

Location: EU (Remote / Hybrid optional)
Employment: Full-time
Start date: ASAP

We are looking for a Senior DevOps Engineer to join a fast-growing fintech / crypto product with a high-load, real-time infrastructure.

This role is ideal for an engineer who is not only comfortable maintaining production systems, but also capable of designing, scaling, and securing complex infrastructure. You will play a key role in shaping platform architecture, improving reliability, and driving DevSecOps practices across the organization.

You will work with production-critical systems, complex CI/CD pipelines, Kubernetes environments, and modern observability stacks in a rapidly evolving product.

What We Value

• Ownership mindset and accountability for production systems
• Strong system thinking and architectural vision
• Experience working with high-load, production-critical infrastructure
• Proactive approach to security, monitoring, and reliability
• Ability to quickly identify root causes and deliver stable, long-term solutions

Key Responsibilities

• Design, build, and optimize high-availability and scalable infrastructure
• Administer and manage Kubernetes clusters (networking, security, scaling)
• Implement and maintain Infrastructure as Code (Terraform, Ansible)
• Build and support CI/CD pipelines (GitLab, GitOps workflows)
• Manage GitLab runners and deployment processes
• Administer and optimize Linux-based systems (Debian / Ubuntu)
• Work with databases: PostgreSQL, Redis, MongoDB, InfluxDB
• Support Kafka and event-driven architecture
• Build and maintain monitoring and observability systems
• Configure and optimize Prometheus, Grafana, Loki, ELK Stack
• Implement security best practices and DevSecOps processes
• Manage secrets and access (HashiCorp Vault, SIEM tools)
• Optimize networking, load balancing, and infrastructure security

Requirements

• 5+ years of experience in DevOps / Infrastructure Engineering
• Strong experience with high-load and scalable systems
• Advanced hands-on experience with Kubernetes
• Solid experience with Terraform and Ansible
• Deep knowledge of Linux systems (Debian / Ubuntu, internals, hardening)
• Experience with databases (PostgreSQL, Redis, MongoDB, InfluxDB)
• Experience supporting Kafka
• Strong experience with GitLab CI/CD (multi-stage pipelines, runners, GitOps)
• Proficiency in scripting (Python, Bash)
• Experience with observability stack (Prometheus, Grafana, ELK, Loki)
• Strong understanding of security and DevSecOps practices
• Solid networking knowledge (TCP/IP, Nginx, HAProxy, SDN)
• Experience with virtualization (Proxmox or VMware ESXi)

Nice to Have

• Experience in fintech / crypto / trading products
• Experience with real-time or event-driven systems
• Experience building infrastructure from scratch
• Hands-on experience with disaster recovery and backup strategies
• Strong expertise in database performance tuning

What to Expect

• Work on a high-impact fintech / crypto product with real-time data and high-load systems
• Opportunity to influence infrastructure architecture and technical decisions
• Collaborative environment with strong engineering culture
• Flexible work format (remote with optional hybrid setup)