Matéhis Langlais

I took the lead in technical development at AmazOdds, a data analysis platform, working as a freelancer. The application is a tool for the general public, providing and sorting detailed statistics from multiple partners. The main challenges were managing a huge volume of data (several million per minute) and ensuring fast query execution (maximum 2 seconds). My responsibilities included:

- Creating a user interface in Next.js.

- Setting up a login system with Firebase.

- Developing an API in Express.js.

- Creating several scrapers.

- Designing a microservices architecture.

- Creating and optimizing a PostgreSQL database, including creating materialized views, setting up indexes, automatic database fragmentation, reducing data volume tenfold, and implementing a compression system.

- Setting up end-to-end tests.

- Setting up continuous deployment.

- Dockerizing the application.

I returned to Panorabanques, an online banking comparator, to bring my expertise to the redesign of their main form.

- Design and integration of the new form using Formik and Nextjs.

- Mentoring and training an intern.

- Improving the infrastructure by implementing Terraform.

- Setting up application monitoring with Grafana, Prometheus, and Discord.

- Adding a new logging system with Kibana and Elasticsearch. Methodology: Scrum with two-week sprints, using Jira and Confluence, managed by a Product Owner.

At Méta-Coaching, a health platform offering personalized programs for various medical issues, I served as CTO, tasked with maintaining and migrating an existing tech stack based on Angular 1 to more modern technologies.

- Recruiting developers and interns to build the technical team.

- Team management and task allocation.

- Product Owner role.

- Finalizing and deploying a crucial unfinished feature.

- Maintaining the existing tech stack.

- Creating a new infrastructure based on microservices and modern technologies.

- Analyzing structures related to health industry challenges (security, customer data).

- Optimizing database architecture.

- Implementing continuous deployment.

- UX studies of the back office.

- Developing specifications and a roadmap.

- Creating end-to-end tests.

- Designing a new data structure and migrating existing data. Methodology: Scrum with Jira, Git Flow.