Senior AWS DevOps Engineer IaC, CDK, Terraform, Python, OIDC, IAM

Senior AWS DevOps Engineer IaC, Serverless, CDK, Terraform, Python, OIDC, IAM Rules Outside IR35A standout contract opportunity with a global, market-leading B2B SaaS organisation undergoing a greenfield platform build involving AI adoption, and modern engineering practices. Were expanding our UK DevOps function and looking for a Senior AWS DevOps Engineer with extensive IaC, serverless and security experience who can operate with high autonomy, make strong technical decisions, and communicate clearly across both technical and non-technical teams.What Youll Be Doing:Youll be a key contributor in designing, delivering, and supporting the cloud foundations that power our products and internal platforms, with a strong emphasis on Infrastructure as Code, AWS serverless engineering, and event-driven architectures. Youll be expected to work with seniority from day one, owning problems end-to-end and driving solutions proactively.Designing, building, and maintaining secure, scalable

resilient AWS serverless infrastructureDeveloping automation, tooling, and workflow orchestration using Python and TypeScriptImplementing complex workflows using AWS Step Functions, Lambda, EventBridge, DynamoDB Streams, and API GatewayBuilding and maintaining IaC using AWS CDK, Terraform, and CloudFormationImplementing modern identity and access patterns including OIDC, IAM rolesEnhancing CI/CD pipelines using GitHub ActionsCollaborating effectively with engineering, product, and security teams; communicating decisions, trade-offs, and risks with clarityTaking full ownership of tasks from design through delivery, operating independently and making sound technical judgmentsSupporting incident response, including escalation, resolution, and post-incident improvementsDocumenting systems, processes, and technical decisions with precisionHandling context switching effectively when priorities shiftReducing technical debt and improving operational maturity across environmentsMaintaining a strong security and compliance mindset in all designs and implementationsStepping up during high-pressure events, escalations, and critical incidentsEnsuring reliable availability during agreed working hoursWho Were Looking For:Youll have deep, hands-on experience with AWS development and production environments where availability, resilience, and security are non-negotiable. Were especially interested in engineers with strong capability across:Lambda (Python & TypeScript)Step FunctionsDynamoDB & DynamoDB StreamsEventBridgeAPI GatewayIAM roles, permission boundaries, OIDC-based identity flowsCDK, Terraform & Cloud FormationYou should also bring excellent communication skills and the ability to articulate technical decisions, influence stakeholders, and provide clear updates during incidents or delivery cycles.Contract Details:£550 - £600 per day Outside IR35100% remote8 months rollingTPBN1_UKTJ