Amine Affif
FRRésumé (PDF)

Amine Affif

Full-stack developer, from mockup to production.

React, TypeScript, Next.js and Ruby on Rails. Paris, hybrid or remote.

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See the career path

◆ years

of experience

◆ years

on high-traffic legacy Rails

◆ products

designed, built, shipped

Career

Where I worked, and what I shipped there.

  1. 2025 - Current

    CDI

    Full-stack web developer

    Skello · Paris, hybride

    • Migrated a critical scheduling module from a legacy framework to React 19 over three months, keeping both versions usable in parallel: two-way transfer of filters and navigation state, bulk actions, internationalisation across nine locales.
    • Built a design system component foundation from scratch, still used and extended by other teams eight months later.
    • Reviewed 394 pull requests for the team, close to double my own, across eight repositories and three stacks.
    • Point of contact for production data migrations, with a verification procedure I formalised.

    TypeScriptReactRuby on RailsReact NativePostgreSQL

  2. 2025

    Freelance

    Freelance full-stack developer

    Mantanox

    • A landing page for a founder raising funds. Design, copy and development delivered by one person.

    Next.jsDesignMotion3D

  3. 2025

    Freelance

    Freelance full-stack developer

    DreamLocation

    • A vehicle-booking site and back-office for a rental agency. Bookings and payments no longer go through a paper notebook.

    Next.jsTypeScriptFirebaseStripeDockerCloudinary

  4. 2024 - 2025

    Freelance

    Freelance full-stack developer

    VibeCheck

    • An audio-analysis SaaS: the app compares two tracks and computes their similarity score. Designed, built and shipped solo.

    Next.jsTypeScriptFastAPITensorFlowStripePostgreSQLRedisNGINX

  5. 2024 - 2025

    Freelance

    Freelance full-stack developer

    Health CRM

    • A CRM built for teams selling to hospitals. Built solo, from design through to release.

    Next.js 15React 19TypeScriptTailwind CSSRechartsVercel

  6. 2024 - 2025

    Freelance

    Freelance full-stack developer

    Scaly

    • An AI image-upscaling SaaS. From zero to a product online.

    Next.jsTypeScriptFirebaseTailwindCloudinary

  7. 2024

    Freelance

    Freelance full-stack developer

    EvaLawrens

    • An online store for a D2C brand, from development through to the ad campaigns.

    WooCommercePHPJavaScriptStripeMeta AdsGoogle Ads

  8. 2023 - 2024

    Alternance

    Full-stack web developer

    Cévidentia · Boulogne-Billancourt

    • Built and maintained the Ruby on Rails and Next.js platforms of a fast-growing company.
    • Proposed technical solutions ahead of the need rather than in reaction to it.
    • Shipped to production through a GitHub CI/CD pipeline.

    Ruby on RailsNext.jsGitHub Actions

  9. 2022 - 2023

    Alternance

    Full-stack web developer

    L'Étudiant (StudyCall) · Paris

    • Shipped new features and maintenance on an existing Ruby on Rails codebase.
    • Refactored deployed code with the explicit goal of cutting infrastructure costs.
    • Set up the dev → staging → production path, each step gated by a pull request.
    • Onboarded new joiners, technically and functionally.

    Ruby on RailsJavaScript

  10. 2021 - 2022

    Alternance

    Full-stack web developer

    L'Étudiant (StudyAdvisor, StudyQuizz) · Paris

    • Built and optimised features on the Ruby on Rails platform.
    • Handled user feedback end to end, from technical diagnosis to shipping.
    • Ran user immersion workshops upstream of development.

    Ruby on RailsJavaScript

  11. 2021

    Web / mobile developer

    GYRA · Amiens

    • React Native mobile apps, from design through to release.
    • Business-oriented React web platforms.

    React NativeReact

Case studies

Four projects, in detail.

L'Étudiant

Shipping into old code without breaking it

L'Étudiant

L'Étudiant · 2021 - 2023

A student-guidance platform in daily use. Two years shipping features into an ageing Rails codebase without breaking what was already there.

L'Étudiant connects prospective students with people already enrolled, so they can get an honest opinion on a school. It is a consumer product: whatever ships is used the same day, and a regression shows immediately.

The constraint
The product ran on an old, complex codebase carrying real technical debt. Adding features to that kind of code without breaking anything is the hardest exercise in the job. It is also the first thing asked of anyone joining a team.
What I shipped
Back-end and API in Ruby on Rails, web interfaces in React and Next, mobile app in React Native. Review system, guidance flows, matching. Always working with the existing code rather than around it.

Key points

  • Full-stack development (Rails, React / Next)
  • Mobile app (React Native)
  • Review system & guidance paths
  • Changes on legacy, no regressions

Result : Two years of features shipped and maintained on a product in daily use, inside an ageing codebase, with no production regression.

Ruby on RailsReactNext.jsReact NativePostgreSQL
View project

From design to deployment, solo

Mantanox

Client project · 2025

A landing page for a founder raising funds. Design, copy and development delivered by one person.

A founder had a few days to present his project to investors. An ambitious project, but all he had to work with: a few photos taken on a phone.

The constraint
Turn those photos into a site worthy of the project, in a few days, to convince investors.
What I shipped
Solo across the whole chain: design, copywriting and development in Next.js. From the raw photos, visuals worthy of a real shoot, 3D renders and motion, then a full landing page that walks through the project section by section.

Key points

  • Full landing page (Next.js)
  • Design, copywriting & art direction
  • Pro visuals, 3D schematics & motion from amateur photos
  • Delivered in time for the investor pitch

Result : Goal reached: the founder raised the funds for his project, and the site made the case credible to investors.

Next.jsDesignMotion3D
View project

Serving an AI model in production

VibeCheck

Freelance · 2024 - 2025View live ↗

An audio-analysis SaaS: the app compares two tracks and computes their similarity score. Designed, built and shipped solo.

VibeCheck compares two tracks and computes their similarity score, handy for checking a cover. I designed and built it end to end, from signal processing through to billing.

The constraint
Audio models are heavy and hungry. Served naively, they blow up response times and the server bill. It had to stay fast, secure and economically viable.
What I shipped
A full self-service SaaS: Next.js front-end, a FastAPI back-end running TensorFlow, Stripe subscription, encrypted files, automatic cleanup, all deployed on a VPS with NGINX.

Key points

  • Track comparison & similarity score
  • Instrument & vocal separation
  • Analysis history
  • Stripe subscription · encrypted files

Result : A complete SaaS running online: signal processing, a model served in production, subscription billing. The whole chain works, from uploaded file to returned score.

Next.jsTypeScriptFastAPITensorFlowStripePostgreSQLRedisNGINX
View project
DreamLocation

Taking a whole business digital

DreamLocation

Client project · 2025View live ↗

A vehicle-booking site and back-office for a rental agency. Bookings and payments no longer go through a paper notebook.

A vehicle-rental agency ran everything by hand, on notes and from memory. The result: double-bookings and mistakes on returns.

The constraint
No off-the-shelf tool matched how they actually worked. They needed their own, cut to fit, and quickly.
What I shipped
Solo, the whole tool: a showcase site with online booking, and a back-office to run everything. Payments, deposits and holds via Stripe, an automated email sequence, a loyalty programme, and dashboards where every part of the business becomes a metric.

Key points

  • Online booking + Stripe payments (deposits, holds)
  • Full management back-office
  • Automated email sequence
  • Operations dashboards & loyalty program

Result : Bookings and payments automated end to end, and a back-office that replaces the handwritten notes. Their whole business went digital, and the site is still running today.

Next.jsTypeScriptFirebaseStripeDockerCloudinary
View project

If this is the profile you're after, we may as well talk now.

Email me

Other ground

Other products, shipped end to end.

E-commerce D2CE-commerce D2C

From code to the first order

E-commerce D2C

EvaLawrens · Client project · 2024

An online store for a D2C brand, from development through to the ad campaigns.

E-commerceBusinessMarketing
View project
Health CRMHealth CRM

A CRM cut for hospital sales

Health CRM

Freelance · 2024 - 2025

A CRM built for teams selling to hospitals. Built solo, from design through to release.

SaaS B2BSantéCRM
View project
ScalyScaly

Getting fast to a usable product

Scaly

Freelance · 2024 - 2025

An AI image-upscaling SaaS. From zero to a product online.

SaaSStartupNext.js
View project

How I work

And day to day, on your team?

Getting into a codebase I don't know, my pull requests, tests, shipping to production, working with agents. Written for the people who'd work with me.

Read how I work

Stack

What I know, and how well.

Three levels rather than a list. A list says nothing about where I stand; a level does.

Every day

Productive from day one, no ramp-up needed.

  • TypeScript
  • React
  • Next.js
  • Node.js
  • SCSS
  • Git
  • Claude Code
  • Cursor

Comfortable

I've shipped production work with these.

  • Ruby on Rails
  • PostgreSQL
  • React Native
  • Tailwind
  • Redis
  • Stripe
  • Firebase

Used before

Shipped with before; I get back up to speed quickly.

  • Python
  • FastAPI
  • TensorFlow
  • Docker
  • NGINX
  • PHP
  • Laravel
  • C++

About

Full-stack developer, product-minded.

These days I code mostly in React and TypeScript, with real Ruby on Rails experience behind me. I've worked on a consumer guidance platform, SaaS products, back-offices, mobile apps and online stores. From a secure back-end to a polished front-end.

I don't wait for a mockup to start. On several of the projects below, the art direction, the copy and the development are all mine. And when the team has a designer, I know how to talk to them.

What I'm looking for: a team where I can see the effect of what I ship. Paris, hybrid.

Contact

Let's talk.

The PDF résumé is here if you need to pass it on internally. Otherwise just email me, I answer.

The PDF covers the same career path as this site, ready to forward.

or email me directlyaffif.amine@live.fr
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