Alexis Chupin

Full-Stack Engineeralexischup@gmail.com(+33) 615458303 Bucharest, RO www.linkedin.com/in/alexis-chupin

Summary

French full-stack engineer with 5 years of software engineering experience across private banking, cybersecurity, and web development. Based in Bucharest, I build business-critical web platforms across React/TypeScript and Spring Boot/Java, with hands-on ownership of architecture, APIs, databases, CI/CD, production support, security remediation, and AI-assisted development using GitHub Copilot.

Skills

  • Programming Languages: Java, TypeScript, JavaScript, PHP, SQL, Python
  • Frontend Development: React, React Router, HTML, CSS, Twig
  • Backend Development: Spring Boot, Symfony, Node.js, REST APIs, BFF, BFB
  • Databases: PostgreSQL, MySQL, Flyway
  • DevOps and Delivery: CI/CD, Jenkins, Docker, Git, GitHub, Batch Jobs, Feature Flags, Monitoring
  • Testing and Security: Unit Testing, Integration Testing, Pentest Remediation, IDOR, Access Control, DTO Validation, Robot Framework
  • Mobile Development: React Native, Expo, Android
  • AI-Assisted Development: GitHub Copilot, Generative AI, AI-assisted Development

Work Experience

Extia
Full-Stack Engineer (V.I.E.)
Bucharest, Romania
Aug 2024 — Present
  • Built and evolved a business-critical web application replacing complex Excel-based credit workflows for Private Banking teams in France.
  • Worked across the full product lifecycle: solution design, relational data modeling, front-end and back-end development, testing, CI/CD, production releases, monitoring, bug fixing, and functional evolution.
  • Designed multi-source API integrations to aggregate dossier, stakeholders, guarantees, and financial data into a single application.
  • Developed advanced business screens with real-time calculations, complex forms, safe navigation flows, and unsaved-changes protection.
  • Led major back-end and database evolutions, including Flyway migrations, production data scripts, feature flags, batch jobs, and APIs exposed to other internal systems.
  • Owned the application as sole developer during its latest phase, handling development, releases, production incidents, and service continuity.
  • Remediated pentest findings, including access-control and DTO update issues, by tightening back-end validation and update logic.
  • Used GitHub Copilot daily to accelerate implementation, technical exploration, and configuration work across React and Spring topics.
  • Delivered internal presentations on AI and developer use cases to senior stakeholders.
Thales
Cybersecurity Software Development Engineer
Cholet, France
Sep 2020 — Sep 2023
  • Designed and delivered a navigation message generation tool for government Galileo messages, eliminating generation failures and reducing form completion time by 30%.
  • Built an offline graphical mapping tool for visualizing, creating, and manipulating 3D objects to support operators on cybersecurity software.
  • Provided support on cybersecurity software through bug fixes, feature additions, and additional test cases.
HommeDeMetier
Web Developer Intern
Remote
May 2020 — Aug 2020
  • Implemented an authentication system for administrators and account creation for new trainees.
  • Built a forum for article publishing with SEO-oriented forms, listing, filtering, and article display pages.
  • Contributed to the e-commerce site across back-end product retrieval and front-end pagination, filters, and payment flow.

Education

ESEO
Engineering Degree
Sep 2020 — Sep 2023
  • TOEIC 900
ESEO
Bachelor Degree
Sep 2018 — Sep 2020
  • TOEIC 900

Profiles

LinkedIn
alexis-chupin
www.linkedin.com/in/alexis-chupin
GitHub
AlexisChup
github.com/AlexisChup