Senior AWS DevOps Engineer – AWS Serverless, IaC, GitHub Actions, Terraform, Lambda, Event Driven Job at Chelmsford Full Time

Senior AWS DevOps Engineer – AWS Serverless, IaC, GitHub Actions, Terraform, Lambda, Event Driven

A standout contract opportunity with a global, market‑leading B2B SaaS organisation undergoing rapid evolution in cloud, AI adoption, and modern engineering practices. We’re expanding our UK DevOps function and looking for someone who thrives in complex AWS environments, enjoys solving real engineering challenges, and brings a proactive, ownership‑driven mindset.

What You’ll Be Doing:

You’ll play a key role in designing, delivering, and supporting the cloud foundations that underpin our products and internal platforms based on AI engineering & agentic workflows:

• Designing, building, and maintaining secure, scalable, and resilient AWS infrastructure
• Implementing and enhancing CI/CD pipelines using GitHub Actions
• Managing infrastructure as code using Terraform, AWS CDK, and Pulumi
• Collaborating with cross‑functional teams to deliver infrastructure for new initiatives
• Actively contributing to team discussions with ideas, feedback, and solutions
• Taking full ownership of assigned tasks from planning through to delivery
• Communicating progress, blockers, and risks clearly and proactively
• Supporting incident response, including escalation, resolution, and post‑incident improvements
• Documenting systems, processes, and technical decisions with clarity and accuracy
• Handling context switching effectively when priorities shift
• Reducing technical debt across environments and improving operational maturity
• Maintaining a strong security and compliance mindset in all designs and implementations
• Stepping up during high‑pressure events, escalations, and critical incidents
• Ensuring reliable availability during agreed working hours

Who We’re Looking For:

We’re looking for people with deep knowledge of AWS and experience working in production environments where availability, resilience, and security are critical is essential including:

• VPC, Transit Gateway, VPC Peering
• S3
• Lambda
• Step Functions
• EventBridge
• API Gateway
• Aurora
• DynamoDB
• Auto Scaling Groups
• ECS
• ALB/NLB
• CloudWatch
• Control Tower
• Service Catalogue

Tooling & Automation Experience:

You don’t need to know everything, but experience with several of the following will help you hit the ground running:

• GitHub & GitHub Actions
• Terraform
• AWS CDK
• Pulumi
• Python (automation, tooling, scripting)
• Cloudflare
• CloudFormation
• ProxySQL
• DataDog
• Infisical

£525 – £550 per day. Outside IR35. London & 90% remote. 6 months rolling.