Anthony Di Stefano

Linxo is a leading French Open Finance platform, regulated by the ACPR (Banque de France). Pioneering Open Banking in Europe and first to achieve ISO 27001 certification, Linxo provides banking solutions, account aggregation (1,700+ bank connectors), payment services, and financial data enrichment for major banking groups and fintechs across Europe.

Senior Backend Engineer within the team building LCL Mouv, a mobile banking app for teenagers (10-17 years old) and their parents, deployed under LCL — one of France's largest retail banks.

LCL Mouv enables teens to check their balance, manage their MaCarteLCL Mastercard (lock/unlock, contactless, online payments), create virtual piggy banks with savings goals, request money from family, and validate online purchases. Parents retain full oversight through LCL Mes Comptes with spending alerts, card controls, and limit management.

--- What I Do ---

- Backend Re-architecture: Leading the restructuring of the NestJS backend toward clean, maintainable microservices — enforcing Clean Code principles (SRP, YAGNI, KISS) across the entire codebase

- API Development: Building and maintaining secure REST and GraphQL APIs integrating multiple providers and external banking services

- DevEx Improvement: Driving significant Developer Experience enhancements — tooling, workflows, and development standards that accelerate the team's velocity

- Mentoring: Guiding 2 junior developers through architecture decisions, code reviews, and Clean Code adoption to raise the overall team quality

- Security Standards: Operating within ISO 27001 certified infrastructure handling sensitive financial data for minors and their families

--- Scope ---

Brought in as a backend specialist to elevate code quality and re-architect a codebase that needed structural improvements. Focused on establishing solid foundations — clean architecture, proper separation of concerns, and development standards

Dibsteur is a digital music distribution platform enabling independent artists to release their music across 35+ streaming platforms (Spotify, Apple Music, Deezer, TikTok...) and track their royalties in real-time.

Freelance full-stack developer on the music catalog investment platform, handling frontend, backend, admin tooling, and tax compliance.

--- Key Responsibilities ---

• Investor App: Development and maintenance of the investor-facing application (SvelteKit 5, TailwindCSS, Firebase Hosting)

• Admin Dashboard: Built the administration dashboard for investor management and data visualization (SvelteKit, TanStack Table)

• Backend API: Development and evolution of the REST API, data modeling, authentication, and subscription workflows (Node, TypeScript)

• Tax Compliance: Designed and built a tax document generation tool (IFU 2561 ter) with per-investor revenue calculation, prorated interest, and flat tax computation

--- Scope ---

Working across 4 codebases end-to-end: from data extraction and business logic to PDF generation and delivery. Direct collaboration with founders, handling technical consulting, bug investigation, and data quality analysis.

--- Impact ---

→ 4 projects managed end-to-end (frontend, admin, API, tax compliance)

→ Tax documents generated for the entire investor base

→ Data inconsistencies identified and reported, improving calculation reliability

→ Recurring annual engagement for tax document generation

Technical partner for the French Badminton Federation (FFBaD), managing the entire relationship end-to-end: technical consulting, client meetings, demos, quotes, invoicing, development, and delivery.

Acting as a one-person agency: won the RFP, managed client relationship, ran demos and meetings, delivered quotes, handled invoicing, architected solutions, developed features, maintained infrastructure, and ensured 24/7 support.