Frederik Voigt

Assignment for Manutan. Evolution and maintenance of Manutan's international e-commerce websites, including all e-commerce stores.

This assignment involved coordination between client and technical teams to ensure adapted and high-performing solutions on an international scale. Technical environment:

• Java Javascript . JSP

• WCS

• Spring boot Oracle

Examples of achievements:

• Front-end evolution: Updating the design and responsiveness of product pages, following new mockups, notably by improving the display and user experience on mobile.

• Partial removal of Recaptcha: Due to the implementation of a WAF (Web Application Firewall), adjustment of Recaptcha functionalities to maintain security while optimizing user experience.

Implementation of "Dataload": Implementation of a data loader to manage large data packages, improving site performance when loading large amounts of information.

• Support for evolutions: Providing continuous support for the implementation of new developments on the sites, in collaboration with internal teams and clients. User tracking: Integration and updating of tracking systems to collect detailed statistics on user behavior, in order to optimize site performance and improve customer experience.

Startup specializing in blockchain and decentralized trading Summary: Secure and user-friendly software for accessing blockchain and decentralized trading, intended for individuals and trading professionals. Deployment and management of robust and scalable infrastructures in an Agile environment (Kanban and Scrum).

Technical environment:

Languages and frameworks:

Java, ReactJS, Spring Boot, Spring Security, Hibernate

• Databases: PostgreSQL

• Tools and technologies: Docker, Jenkins, Git, Flyway, Swagger, Junit, Mockito

• CLOUD: GCP, AWS

Examples of achievements:

• Management of authentications with Spring Security.

• Implementation of JWT token-based authentication management.

• Secure retrieval and use of user information in the backend.

• API error management: Normalization of API error codes and responses with automatic translation.

• Implementation of a dynamic error management system.

• Creation of various Endpoints, order system, and statistics:

• Creation of the trading order system in the backend. User and administrator statistics to leverage the tool's data.

• Documentation and testing.

• Creation and management of API documentation via Swagger. Writing and execution of unit tests with Junit and Mockito to ensure service reliability.

• Containerization: Use of Docker for containerizing backend APIs and the database (PostgreSQL).

• Implementation and management of containers to ensure high availability and scalability of services.

• Version management.

• Use of Git and Gitlab with a Gitflow strategy for branch and version management.

• Database migration.

• Use of Flyway to manage relational database schema migrations.

• Automation of migrations during deployments to minimize service interruptions.

Assignment for Malakoff Humanis, an insurance giant.

My work consisted of maintaining and developing features for a contract management software for MH "internal" users.

Examples of achievements:

- Detection and correction of batch processes handling large volumes of data, which could cause bugs in the batch chain.

- Optimization of SQL queries to improve efficiency during their use in production.

-Development of new pages.

-Creation of a tool from scratch for formatting and layout based on SQL query results.