Thorben Fohlmeister

Senior Freelance Full-Stack Developer

9 Projects with typescript
Banking Interface (Payments and Transactions)

Cloud-Native API

Customer
Raisin Bank AG
Location
Frankfurt
Industry
Finance
Start
March 2024
Duration
10 Months
Position
Backend

Development of a cloud-native backend platform for payment processing and transaction monitoring in a B2B banking environment. The solution integrates various AWS services and external partner systems, enabling secure processing, transformation, and routing of payment data. Key focus areas included AML transaction monitoring, cash flow surveillance, and third-party integrations. The project also emphasized technical documentation and onboarding of new team members. Architectural consulting and technical leadership within the team. Establishment of code review processes and quality standards. Close collaboration with product owners and stakeholders in agile processes.

Tasks

  • Design and development of AWS Lambda functions
  • Integration of external systems and partner interfaces
  • Implementation of AML transaction monitoring
  • Data persistence with DynamoDB and Prisma
  • Creation and maintenance of API specifications (OpenAPI)
  • Contribution to architectural decisions and infrastructure automation
  • Onboarding and technical support for new developers
  • Maintenance of technical project documentation
  • Architectural consulting and technical decision-making
  • Code reviews and quality assurance
  • Stakeholder communication in agile processes
Digital Workplaces: Project Management

Web Application

Customer
Schaeffler Technologies AG & Co. KG
Location
Nürnberg / Herzogenaurach
Industry
Automotive
Start
October 2023
Duration
8 Months
Position
Frontend

Implementation of a web application for integrating and unifying project management tools as part of the 'Digital Workplaces' initiative. The goal was to consolidate heterogeneous data sources and digitize internal processes. In addition to development, a key focus was on sharing best practices within the team. Architectural consulting in a cross-team context. Technical leadership and establishment of best practices for a team of internal and external developers.

Tasks

  • Development and testing of Angular components
  • Integration of NgRx state management
  • Extension of existing UI libraries
  • Coordination with backend team for interface integration
  • Creation of unit and E2E tests
  • Sharing best practices and mentoring junior team members
  • Architectural consulting and cross-team coordination
  • Agile process design (sprint planning, retrospectives)
Banking Interface

Cloud-Native API

Customer
Raisin Bank AG
Location
Frankfurt
Industry
Finance
Start
September 2020
Duration
3 Years
Position
Backend

Design and development of a scalable cloud API for a B2B banking service provider. The solution covers the entire customer lifecycle and integrates the Mambu core banking system along with numerous external services (KYC, monitoring, payment gateways). The project included regular code reviews and onboarding of new team members. Technical leadership of a growing development team. Co-design of system architecture and scaling strategy. Establishment of development standards and automated quality assurance processes.

Tasks

  • Development of AWS Lambda functions
  • Integration of external systems and partner interfaces
  • Implementation of logging and monitoring solutions
  • Maintenance and extension of API specifications (OpenAPI)
  • Setup and maintenance of infrastructure with AWS CDK and Terraform
  • Conducting code reviews
  • Onboarding of new developers
  • Technical leadership and architectural decisions
  • Establishment of code review standards
  • Agile collaboration with product owners
MasterEV 2 Application Management System

Web Application

Customer
TU München
Location
München
Industry
Education
Start
December 2020
Duration
3 Years
Position
Fullstack

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
CO2 Calculator

Web Application

Customer
Schaeffler Technologies AG & Co. KG
Location
Nürnberg / Herzogenaurach
Industry
Automotive
Start
February 2023
Duration
9 Months
Position
Frontend

Development of a web application for calculating operational metrics and CO2e emissions for industrial bearings. The application required integration and transformation of data from various backend systems. The project emphasized a clean codebase and comprehensive documentation. Complex data transformations and aggregations from heterogeneous backend systems. Close collaboration with specialist departments for validation of calculation logic.

Tasks

  • Implementation of Angular components
  • Integration of NgRx state management
  • Extension of UI libraries
  • Coordination with backend team for interface integration
  • Testing with Jest and Cypress
  • Maintenance of technical documentation
  • Coordination with specialist departments for validation of calculation logic
  • Agile collaboration in the Scrum team
Performance Visualization

Web Application

Customer
Schaeffler Technologies AG & Co. KG
Location
Nürnberg / Herzogenaurach
Industry
Automotive
Start
October 2020
Duration
4 Months
Position
Frontend

Development of an internal web application for visualizing procurement KPIs and their trends over time. The application supports the optimization of purchasing prices and provides a flexible representation of complex data structures.

Tasks

  • Development of Angular components
  • Integration of NgRx state management
  • Extension of UI libraries
  • Coordination with backend team for interface integration
  • Testing with Jest
Datalake Management Console

Web Application

Customer
Startup
Location
Berlin
Industry
Finance / FinTech
Start
March 2020
Duration
6 Months
Position
Fullstack

Development of a management console for controlling and monitoring data flows into a datalake for an AI FinTech company. The solution is based on a serverless AWS architecture and provides a real-time interface via GraphQL. Independent design of the entire serverless architecture on AWS from the ground up.

Tasks

  • Design and setup of AWS components
  • Implementation of the management console with React and Redux
  • Creation of GraphQL schemas and functions with AWS Amplify
  • Integration and testing of data sources (RSS, Twitter, web crawler)
  • Design of the serverless system architecture
EAGLE Collaboration Tool

Web Application

Customer
Norcom AG
Location
München
Industry
Automotive
Start
November 2018
Duration
1 Year
Position
Frontend

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
MasterEV Application Management System

Web Application

Customer
TU München
Location
München
Industry
Education
Start
May 2016
Duration
3 Years
Position
Fullstack

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