On behalf of our Client from the UK, Mobilunity is looking for a Senior DevOps Engineer.
Our Client is a fast-growing SaaS company operating in the telecom and subscription billing space. Their platform supports billing operations for telecom providers and service companies, focusing on reliability, scalability, and continuous product growth.
They are looking for a DevOps Engineer with strong hands-on experience across the AWS environment. You will work on building new features, improving existing functionality, and supporting integrations across a modern, cloud-oriented platform.
Responsibilities:
CI/CD & Deployment Pipelines * Design, build, and maintain robust CI/CD pipelines using AWS CodePipeline, CodeBuild, CodeDeploy, or equivalent tools * Continuously improve deployment reliability, speed, and repeatability * Partner with development teams to standardize deployment processes and ensure environment consistency
Automation & Scripting * Develop and maintain automation scripts using Python and Bash * Eliminate manual processes by implementing scalable automation solutions * Advocate for infrastructure as code and automated workflows
AWS & Hybrid Infrastructure * Operate and optimize cloud infrastructure across AWS (ECS, EC2, RDS/Aurora, S3, IAM, VPC) * Support and maintain hybrid environments, including on-premise (data centre) systems * Ensure consistency and reliability across cloud and on-premise workloads * Contribute to infrastructure provisioning using Terraform and/or CloudFormation
Containerization & Runtime Environments * Build and support Docker-based containerized environments * Provide tooling and best practices to enable developers to deploy and manage services efficiently * Support Linux-based environments and container orchestration workflows
Monitoring, Observability & Reliability * Enhance system observability using CloudWatch, Prometheus, and Grafana * Monitor system health, performance, and availability * Troubleshoot incidents, perform root cause analysis, and implement long-term fixes * Drive improvements in system reliability, scalability, and performance
Security & Compliance * Implement and maintain security best practices across infrastructure and pipelines * Support compliance initiatives and enforce operational standards
Contribute to documentation and knowledge sharing to avoid single points of failure
Requirements: * 3–6 years of experience in DevOps, Site Reliability Engineering, or Infrastructure Engineering * Strong hands-on experience with AWS (ECS, EC2, RDS/Aurora, S3, IAM, VPC) * Proven experience designing and maintaining CI/CD pipelines * Proficiency in Python and/or Bash scripting * Experience with Docker and containerized environments * Solid understanding of monitoring, logging, and alerting systems * Strong troubleshooting skills with the ability to work independently * Effective communication skills in English, with experience working in distributed teams
Nice to have : * Experience with Infrastructure as Code (Terraform and/or CloudFormation) * Exposure to hybrid infrastructure environments (cloud + on-premise) * Familiarity with configuration management tools such as Ansible * Experience working with Node.js environments (e.g., PM2) * Understanding of security and compliance standards (e.g., ISO 27001) * Experience with Prometheus and Grafana for observability
In return we offer: * The friendliest community of like-minded IT-people * Open knowledge-sharing environment — exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies * Mobilunity Medical Insurance program designed to attend our teams’ needs * Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note * Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both * No open-spaces setup — separate rooms for every team’s comfort and multiple lounge and gaming zones * English classes in 1-to-1 & group modes with elements of gamification * Neverending fun: sports events, tournaments, music band, multiple affinity groups
