Microservices Platform
Backend 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. Key focus areas include migrating customer data from external systems to the internal platform, implementing new backend endpoints for existing frontends, 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 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
Web Application
Development of a modular application management system for universities from scratch. The solution is based on an NX monorepo with an Angular frontend and NestJS backend, supports multiple tenants, and provides an automated CI/CD pipeline with Docker deployment. The project emphasized sustainable architecture and the adoption of best practices within the team. Responsibility for the entire technical architecture and infrastructure. Conception of the multi-tenant approach. Setup of a fully automated deployment pipeline from development to production.
Tasks
- System design and development of CI/CD processes (GitHub Actions)
- Implementation of an NX monorepo with reusable libraries
- Backend development with NestJS, SQL and NoSQL databases, OpenAPI
- Frontend development with Angular and PrimeNG
- Testing with Jest and Cypress
- Introduction and dissemination of best practices within the development team
- Overall responsibility for system architecture
- Conception of the multi-tenant architecture
- Setup of the automated deployment pipeline
Web Application
Further development and customization of a big data document management and collaboration tool for a major automotive corporation. The frontend was completely rebuilt using Angular 9 and NgRx for complex state management. The project also involved establishing guidelines for frontend development. Responsibility for the complete frontend re-architecture. Successful migration from Angular 5 to Angular 9 in a live production environment. Establishment of frontend development guidelines for the entire project team.
Tasks
- Implementation of Angular components
- UX/UI development in collaboration with the client
- Migration from Angular 5 to Angular 9
- Integration of NgRx Store for state management
- Testing with Karma, Jest, and Protractor
- Contribution to the creation of development guidelines
- Responsibility for frontend architecture
- Establishment of coding standards and development guidelines
Web Application
Development of a scalable web application for application management at universities. The solution supports various processes and requirements in the application workflow and enables simultaneous processing of applicants by multiple users through GraphQL.
Tasks
- System design and development of CI/CD processes (Gitlab CI)
- Implementation of frontend and backend
- Database layer abstraction (MongoDB, MySQL)
- UI/UX design in collaboration with the clients