AWS Application Developer with Typescript

AWS Application Developer (Hands-on) – TypeScript | Serverless & Event-Driven Architecture

Location: London

6months + Contract

Role Summary

We are looking for a highly hands-on AWS Application Developer with deep TypeScript expertise and strong serverless/event-driven engineering skills. This role requires building and operating production-grade solutions using AWS Lambda, EventBridge, Kinesis Streams, DynamoDB, and S3, while also contributing to architecture discussions, proposals, and stakeholder engagement with customer Enterprise Architects.

Key Responsibilities

1) Hands-on Engineering (Primary Focus)

• Design, develop, and deploy TypeScript-based AWS services with a strong emphasis on serverless implementations
• Build event-driven integrations using Amazon EventBridge, including routing, filtering, replay/error handling patterns.
• Implement stream processing / real-time ingestion using Amazon Kinesis Data Streams (consumer patterns, batching, checkpointing, scaling).
• Develop resilient AWS Lambda functions with proper observability, retries, idempotency, and performance tuning.
• Build data persistence and access patterns using Amazon DynamoDB (partition/sort key design, GSIs, TTL, conditional writes).
• Use Amazon S3 for object storage patterns (event triggers, lifecycle policies, encryption, pre-signed URLs where applicable).

2) API & Integration Development

• Implement APIs using API Gateway and integrate with Lambda/DynamoDB.
• Build async workflows and messaging patterns (SQS/SNS as needed) alongside EventBridge and streams.

3) Quality, Testing, and DevOps

• Write comprehensive unit/integration tests (e.g., Jest; use LocalStack where appropriate).
• Work within CI/CD pipelines and DevOps practices to release frequently and safely.
• Ensure code quality, security posture, and automation standards are maintained.

4) Architecture, Proposals & Enterprise Architect Collaboration

• Contribute to architecture design and optimization of AWS solutions (scalability, resilience, security).
• Produce technical artefacts: solution approach, diagrams, assumptions, and estimates for proposals / SOW inputs.
• Collaborate with customer Enterprise Architects and senior stakeholders to align designs to enterprise standards and governance.

Required Skills & Experience (Must-Have)

• Strong TypeScript (hands-on) — building production services (Node.js runtime where applicable)
• AWS Lambda (hands-on) — serverless development and production support.
• Amazon EventBridge (hands-on) — event-driven design and implementation.
• Amazon DynamoDB (hands-on) — data modelling and performance-aware access patterns.
• Amazon S3 (hands-on) — storage integration patterns and secure access controls.
• Amazon Kinesis Data Streams (hands-on) — stream ingestion/processing and consumer patterns.
• Experience with supporting AWS services like API Gateway and CloudFormation (or AWS CDK).
• Strong understanding of cloud architecture and ability to work with enterprise architecture stakeholders.
• Strong knowledge of AWS secutity recommendations

Preferred Qualifications

• AWS certifications: Developer Associate / Solutions Architect.
• Experience with microservices and security best practices in cloud environments.