Sylvain B.

As aWeb Development and Design Engineerat Sleede, I participated in the design, **development of web and mobile applications**, as well as customer support and maintenance.

I was in direct contact with users to help themdefine their specifications**, **analyze user needs**, and prepare and validate **wireframe mockupsin consultation with clients to confirm business workflows.

Technically, I was responsible forweb integrationof graphic mockups,developing new full-stack features**, maintaining existing software (bug fixes, performance optimization), **interfacing numerous APIs(Stripe, PayZen, business software, ERPs...), andimplementing technical(OpenID Connect, OAuth 2...) and legalstandards(GDPR, NF525…).

I also participated inwriting technical and non-technical documentationfor software users and providedtraining for end-usersas well as customer support.

Finally, I contributed to strengthening and implementing good development practices: **unit and functional testing**, **code reviews**, agile methodologies…

Over the last five years, I have been thefull-stack lead developerfor Fab-manager, the open-source software for managing fablabs and third places.

As an **independent developer**, I carried out various service missions in software development, auditing, and consulting in sustainable and open-source digital solutions for several clients.

I notably worked for a digital company providing a turnkey management software for renewable energy parks, on which I was tasked withadding new features(Ruby-on-Rails).

I also worked with real estate players tosynchronize datafrom real estate listings between their internal management tool and their website (Rust).

Another significant mission I participated in was with a French Tech 2030 digital company, taking over ahigh-value projectthat had **significant technical debt**, to add features, resolve the technical debt, fix major bugs, improve test coverage, and implement best practices, all while avoiding downtime and user friction (Ruby-on-Rails).

As a **software engineer**, I participated in the design and development of new features for digital television broadcasting software.

I notablyimplemented standards(DVB-SUB, DVB-T2, ISDB-T...), set up automated tests, monitored quality, and participated in customer support...

This position followed my end-of-studies internship within the company.