On behalf of our Client — a UK-based technology company specializing in transport retail and digital ticketing platforms — Mobilunity is looking for a Senior DevOps (AWS) Engineer.
Our client partners with leading transportation operators to deliver innovative digital ticketing systems, scalable SaaS platforms, and customer-facing applications. Their solutions enhance passenger experience while enabling modern retail capabilities across rail and wider transport networks.
Mobilunity is seeking a Senior DevOps(AWS) Engineer to support our client’s cloud-native infrastructure and platform reliability initiatives. You will design, implement, and maintain highly scalable AWS environments, build infrastructure-as-code platforms, and develop automation tooling that enables secure, resilient, and efficient engineering operations.
Responsibilities: * Design and manage AWS production-grade cloud environments * Implement scalable containerized workloads using ECS and Fargate * Build and maintain Terraform-based infrastructure (module-driven architecture) * Develop automation tooling using Python (boto3) and Bash scripting * Design secure networking architectures including VPCs, subnets, routing, and load balancing * Implement CI/CD pipelines using GitHub Actions and Git-based workflows * Ensure monitoring, logging, and security across infrastructure (CloudWatch, GuardDuty, WAF) * Support database operations including RDS (Multi-AZ), DynamoDB, and DMS migrations * Implement disaster recovery and resilience strategies * Collaborate closely with engineering teams to improve deployment reliability and operational efficiency
Must have skills: * VPC, subnets, NAT gateways, and route tables * ECS and Fargate architecture and scaling patterns * Application Load Balancer (ALB) and CloudFront * RDS (Multi-AZ deployments, backups, performance tuning) * DynamoDB * IAM (advanced policy design) * AWS WAF, GuardDuty, and CloudWatch * AWS Step Functions * AWS Database Migration Service (DMS) * AWS disaster-recovery design and implementation
Infrastructure as Code * Advanced Terraform experience with reusable module design * Remote state management using S3 and DynamoDB locking * Git-based infrastructure workflows
Containers * Strong Docker experience * Container logging, troubleshooting, and debugging * ECS architecture design and operational management
CI/CD * GitHub Actions pipeline development and optimization * Git workflows and branching strategies * Experience with Amazon ECR
Networking * Secure subnet and network segmentation architecture * TLS/SSL certificate lifecycle management (ACM) * DNS management using Route 53 * Load balancing strategies and traffic routing
Strong ability to build internal automation and developer productivity tools
Nice to have skills: * Multi-region AWS infrastructure experience * Observability platform design and SRE practices * Experience supporting high-availability production systems
Experience working with distributed international engineering teams
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 widest variety of modern technologies * Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note * English classes in 1-to-1 & group modes with elements of gamification * Never-ending fun: sports events, tournaments, music band, multiple affinity groups
