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Who I am

After four years on Meilleurs Agents’ data team, from price mapping to data engineering, I became a freelance full-stack developer in 2023. Since then I have been building business applications and B2B SaaS, from architecture to production.

My biggest strength, according to my clients: I don’t just execute. I analyze the product, ask the right questions and make concrete suggestions so it truly serves its users.

I work first and foremost with companies and product teams — startups, SMBs and scale-ups — from data to interface, with a pragmatic, AI-augmented approach.

Portrait of Arthur Grosso
Skills

What I work with

Front-end
  • React7 yearsSenior
  • TypeScript4 yearsSenior
  • Next.js3 yearsExperienced
  • Vue / Nuxt2 yearsExperienced
Back-end
  • PostgreSQL / PostGIS9 yearsSenior
  • Python7 yearsSenior
  • Node.js5 yearsSenior
  • GraphQL / Hasura4 yearsSenior
Data & Cloud
  • ETL7 yearsSenior
  • PySpark2 yearsExperienced
  • Airflow2 yearsExperienced
  • GCP2 yearsExperienced
  • AWS2 yearsExperienced
DevOps & quality
  • Docker / Kubernetes7 yearsExperienced
  • Playwright / Cypress7 yearsExperienced
  • Jest / Testing Library7 yearsExperienced
  • Terraform5 yearsExperienced
  • CI/CD · GitHub Actions7 yearsExperienced

What I build

SaaS & business apps

Back offices, role-based workflows and dashboards for business teams.

Documents & e-signature

Pre-filled contracts, CERFA forms and PDFs, DocuSign or Yousign signing and status tracking.

Integrations & APIs

Connectors to third-party services: listing portals, Meta Ads, CEE partners, webhooks.

Geospatial data & maps

Land registry, zoning rules, geocoding and interactive maps with PostGIS and Mapbox.

Data pipelines & analytics

Batch jobs, ETL and metrics that feed reports and price maps.

Websites, content & e-commerce

Headless CMS, newsletters, bilingual showcase sites and online license sales.

Experience

My experience

Creator · open-source project · SuiSui

Jan 2026 — PresentAlongside

Open-source desktop app for writing Playwright BDD tests without code: Gherkin scenarios composed by drag and drop and validated before running, test runner, browser recorder and multi-provider AI assistant (Electron, Nuxt, Playwright).

Senior Full-Stack Developer · Stakimo

May 2025 — Aug 2026

SaaS for property developers: DocuSign e-signature, sales dashboards and reports, listing syndication and Meta Ads leads, on AWS microservices (Nuxt, Python, Terraform).

Data Engineer · Qomon

Jan 2025

Short engagement on the platform’s data lake: integrated Sweden’s geographic boundaries, election results and statistics (Python, Dagster).

Full-Stack Developer · Abrico

Dec 2024 — Apr 2025

Team migration of a no-code tool to Next.js to simplify energy-renovation financing: site tracking, MaPrimeRénov’ / CEE, documents and e-signature.

Web Developer · SEM Aérospatiale

Nov 2024 — Feb 2025

Built the bilingual aeronautical-maintenance showcase site with CodeIgniter, from a design team’s mock-ups.

Full-Stack Developer · Bocarlab

Apr 2024 — Nov 2024

WordPress store selling an AutoCAD plugin, C# licensing system built into the plugin, Revit tutorials space, then plugin and site maintenance.

Full-Stack Developer · Hyatt

Dec 2023 — Mar 2024

Hyatt Event Privileges platform: exclusive content, event invitations and newsletters for partner event planners (Next.js, Directus).

Full-Stack Developer · AutorizConstruction

Jan 2023 — PresentAlongside

Long-term client since 2023, alongside my other engagements: end-to-end design of a planning-application platform, then hosting, maintenance and new features (land-registry / PLU analysis, automatically generated CERFA forms and drawings; React, Hasura, PostGIS).

Data Engineer · Dataviz · Meilleurs Agents

Oct 2018 — Nov 2022

4 years on the data team: MilleFeuillesUI, the geographic price exploration tool, then the monthly update of the France and Belgium (Immoweb) price maps and the geolocation of 8 million transactions (PySpark, Airflow, PostGIS).

Education

Academic background

2014 — 2020

EPITECH — European Institute of Technology

IT expert · Computer programming. Five years of project-based learning, autonomous and in teams, including a year of work-study, with a strong focus on practice.
Languages

Spoken languages

  • French

    Native
  • English

    Intermediate · B1

    I read and write technical English every day (documentation, code, tickets). I can hold a conversation, but my spoken English is not yet fluent.