Antoine Blin

👀 Launched in 2014, Nickel is a fintech company offering simple, accessible, and innovative payment solutions. Nickel allows you to open a current account without an overdraft in 5 minutes at a tobacconist, combining the best of physical and digital worlds.

📊 Nickel by the numbers:

- Over 4,000,000 customers since 2014

- 93% satisfied customers

- Over 10,000 Nickel partner points of sale in Europe

- Over 800 employees across 5 countries (France, Spain, Belgium, Portugal, Germany)

I joined the team in charge of the mobile customer area.

I develop new features on the mobile application, as well as on the various APIs consumed by it.

👥 The team:

- 5 developers

- 2 POs

- 1 QA

🔨 My tasks:

- Collaborate with POs to study feasibility and create sub-tasks

- Development on Java 21 / Spring Boot 3 APIs

- Development of integration tests with WireMock

- Development of the mobile application with React Native

- Development of unit tests with Jest

- Implementation of analytics tracking

- Application versioning with Git and code review

- Packaging of versions and monitoring of deployments on Grafana

🎨 Technical context: Jira, GitLab, Java 21, Spring Boot 3, Gradle, SQL Server, WireMock, JWT, TypeScript, React, React Native, Redux, Storybook, Jest, Docker, Grafana, Prometheus, Figma

PROJECT COMPLETED DURING MY 7-YEAR EXPERIENCE AT THE PUBLISHER KEEPEEK.

👀 Intermarché is the historic brand of Les Mousquetaires. It is also the one that offers the densest network of supermarkets in France and the leading supermarket chain in the country.

📊 Intermarché by the numbers:

- 2nd largest independent French distributor

- 1840 points of sale, one store every 17 km

- 4.46 billion euros in revenue in 2022 (+8.5%)

👉 As a client of the publisher Keepeek, I started the project within the delivery team to provide Intermarché with a quality control API.

Every day, Intermarché sends thousands of product photos to the Keepeek DAM. These photos are then intended to be displayed on e-commerce sites. These photos must comply with the GS1 standard. The objective was to develop an API allowing Intermarché to test criteria related to the GS1 standard (file naming convention, photo quality criteria, etc.) and return the result in JSON format.

👥 The team:

- 2 developers

- 1 project manager

- 1 QA

- 1 Ops

🔨 My tasks:

- Collaborate with the PO team to define the scope.

- Definition of hexagonal architecture and service design.

- Development of the Spring Boot 3 API.

- Spring Security configuration for basic authentication.

- Development of unit tests.

- Containerization of the application with Docker.

- Configuration of a docker-compose in collaboration with the Ops team.

- Implementation of CI/CD with Jenkins.

- Application versioning with Git.

- Load testing with k6.

- Functional and technical documentation with Swagger.

🎨 Technical context: Jira, GitLab, Java 21, Spring Boot 3, Maven, MariaDB, Spring Data, Mockito, Jenkins, Docker, Nginx, k6

PROJECT COMPLETED DURING MY 7-YEAR EXPERIENCE AT THE PUBLISHER KEEPEEK.

👀 The Colas group is a world leader in the construction and maintenance of transport infrastructure.

📊 Colas by the numbers:

- 50 countries across 5 continents

- 3,000 material production and recycling units

- 15.5 billion euros in revenue in 2022

👉 As a client of the publisher Keepeek, I started the project within the delivery team to provide Colas with a web application for uploading (video rushes) to cold storage (Azure Blob Storage).

👥 The team:

- 1 developer

- 1 project manager

- 1 QA

- 1 Ops

🔨 My tasks:

- Participation in pre-sales and quoting.

- Creation of application prototypes using Figma.

- Back-end development: Java, Spring Boot

- Azure Blob Storage training.

- Implementation of a system for generating SAS tokens with limited lifespan.

- Management of JWT Keycloak authentication token for user authentication.

- Iterative front-end development: React

- Use of Material UI graphical components.

- Development of reusable components with Storybook.

- Code review.

- Development of unit tests.

- Application containerization in a Docker image with different profiles for testing and production.

- CI/CD implementation with Jenkins to run tests, build the Docker image, push it to the registry, and restart the application with the latest version.

- Docker-compose configuration and collaboration with the Ops team to deploy the application.

- Implementation of a Java back-end remote debug system.

- Application versioning with Git tags.

- Technical documentation.

- Client demonstration.

🎨 Technical context: Jira, GitLab, Java 21, Spring Boot 3, Maven, MariaDB, Hibernate, SQL, Mockito, JWT, Keycloak, Azure Blob Storage, TypeScript, React, Recoil, Material UI, Storybook, Jest, Jenkins, Docker, Nginx