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Romain BohdanowiczRB

Romain Bohdanowicz

CTO, Lead Fullstack Dev JavaScript/TypeScript

€750/day
19 projects
Bordeaux, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

Based inBordeaux**, mobile in **Parisand all over France, I have been supporting companies of all sizes forover 20 years— startups, SMEs, large groups — in their **fullstack JavaScript/TypeScript developments**, as:
  • External CTO
  • Lead Dev
  • Expert Developer
  • Trainer
  • Code Auditor

Main Stack

*Front-end:React, Angular, Vue.js, Svelte, Lit, Stencil

*Back-end & Platforms:Node.js, Deno, Bun, Express, NestJS, Next.js, Nuxt, Electron, Capacitor, PHP (Symfony)

*Databases:PostgreSQL, MySQL, MariaDB, MongoDB, CouchDB, Couchbase, Elasticsearch, Redis

*Web & DevOps:HTML, CSS, Sass, Tailwind, Docker, Kubernetes, Git

*Cloud:AWS, GCP, Vercel, OVH Cloud

*Legacy:AngularJS, Backbone.js, Ember.js, Knockout.js, jQuery — migrations and maintenance of existing projects


AI & Automation

*AI & Multi-agent Systems:LangChain, LangGraph, CrewAI, Vercel AI SDK

*RAG & LLM:LlamaIndex, OpenAI, Google Vertex AI, vector databases

*Protocols & Interoperability:MCP (Model Context Protocol), Skills, Notion/Slack/Drive integration

*Automation & Orchestration:n8n (CRM/marketing, AI agents, API connectors, data pipelines)

*AI-assisted Dev:Cursor, Windsurf, Claude Code, GitHub Copilot


Notable Projects
  • AI platform for generating advertising content (MLIB)
  • Complete redesign of the MyLifeInABook V3 platform
  • In-store CRM for GoldUnion
  • STM32 Finder (App Store & Google Play)
  • Training & coaching: STMicroelectronics (~200 developers), Safran Helicopter Engines (~40 developers)
  • Code audits and performance optimization on high-traffic projects

Whether you are looking for an **outsourced CTO**, a **lead dev**, a **trainer**, or a **JS/TS + AI expert**, I am ready to support you effectively.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bordeaux (up to 20km), Paris (up to 20km), Toulouse (up to 20km)

Experience

  • GoldUnion
    Fractional CTO
    RETAIL (SMALL BUSINESS)
    September 2025 - Today (9 months)
    Paris, France
    GoldUnion is a network of over 100 stores in France and internationally. The challenge was to redesign a historical low-code CRM, which had become limiting, into a robust, scalable tool aligned with business needs.

    I led the design and implementation of a new CRM covering product estimation, price tracking, shipping, KPIs, and customer management, with hardware integrations (counting devices, signature tablets, check printers).

    My role: stack selection, architecture definition, implementation of best practices (quality, testing, organization), and close alignment between business challenges and technical decisions.
    React.js Next.js PostgreSQL Prisma Typescript
  • Kadensia
    Fractional CTO
    SOFTWARE PUBLISHING
    April 2025 - September 2025 (5 months)
    Bordeaux, France
    Kadensia develops a generative AI platform for automatically creating image and video ads from Shopify product data, to quickly refresh advertising content on social media.

    Already engaged on a previous project, I was tasked with designing the architecture and organizing the development of this new platform, with a strong emphasis on flexibility and rapid iteration.

    I designed an architecture that allows for AI model interchangeability, rapid prompt evolution, and smooth deployment, while structuring the team and development practices.
    Next.js MongoDB React.js Vercel Typescript
  • Rolex
    Web Components Expert
    LUXURY GOODS
    August 2024 - February 2025 (6 months)
    Genève, Switzerland
    As part of unifying the interfaces of several applications, Rolex launched the creation of a Design System based on Web Components developed with Lit, integrable into Angular, React, and Vue.

    I designed and led a training program on Lit and internal components, then supported the teams in industrializing the project: optimizing bundling and implementing automated tests.
    JavaScript Web Components Lit esbuild Vitest

Reviews

5.0

Out of 15 ratings

K

Karim

MLIB

Reviewed on 10/22/2024

Romain was the lead dev on our web app. He is both a technical expert and very pedagogical with the entire team. He successfully led the project to its launch. An expert I highly recommend. We are working with him long-term. Thanks again, Romain!
A

Arthur

ALVEUS

Reviewed on 4/24/2019

Romain adapted to our request and delivered a result that met our expectations. Besides being technically proficient, Romain is available and proposes solutions when necessary. I recommend him.

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Education

  • Engineer
    EFREI
    2008
    Ingénieur en informatique | Spécialité ingénierie logicielle

Certifications

Skill set

Categories