Thorben Fohlmeister

Senior Freelance Full-Stack Developer

1 Project with microservices
Service Platform

Microservices Platform

Customer
Siemens AG
Location
Remote
Industry
Technology
Start
June 2025
Duration
10+ Months
Position
Fullstack

Fullstack development within a microservices architecture in the Global Business Services division. The platform consists of multiple NestJS-based services running as AWS Lambda functions, communicating via EventBridge. On the frontend, Angular components are developed and adapted to make new backend functionality accessible to end users. Key focus areas include migrating customer data from external systems to the internal platform, implementing new endpoints and corresponding frontend components, and optimizing database access patterns. Ensuring data integrity and consistency during ongoing migration processes. Close collaboration with internal stakeholders and cross-functional development teams in agile workflows.

Tasks

  • Development and adaptation of Angular frontend components
  • Development and implementation of backend endpoints with NestJS and Fastify
  • Migration of customer data from external systems to the internal platform
  • Implementation and optimization of database access (TypeORM, PostgreSQL)
  • Ensuring data integrity and consistency during migration
  • Development and maintenance of AWS Lambda functions and infrastructure (CDK)
  • Integration of AWS services (EventBridge, S3, SQS, Secrets Manager)
  • Creation and maintenance of API specifications (OpenAPI/Swagger)
  • Technical coordination with internal stakeholders and development teams
  • Code reviews and quality assurance
  • Unit and integration testing with Jest