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Orion C.OC

Orion C.

Supermalter

Tech lead | Node.js, React, Data, AI

€700/day
11 projects
Aix-en-Provence, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Orion

Experienced full stack software engineer, I combine technical expertise (front, back, infra, security, AI) with a strong product and UX sensibility. Comfortable in growing environments (startups, scale-ups, SMEs), I design and deliver complete digital products, structured around clear business needs.

I help you quickly build a solid, maintainable, and scalable product.

Launching a new project or want to structure your stack to support your growth? Let's discuss it!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Aix-en-Provence (up to 50km)

Experience

  • Trackdéchets
    Lead dev
    PUBLIC SECTOR
    November 2018 - February 2026 (7 years and 3 months)
    Co-creation of the state startup Trackdéchets, a product for managing the traceability of hazardous waste in France. The platform has been mandatory for professionals since the decree of December 21, 2021.

    - Launch of the MVP then support for growth from 0 to +600K users
    - Software development (TypeScript, NodeJS, React), infrastructure setup (Docker, PaaS, Kubernetes, OpenTelemetry) and participation in product design
    - Management of multiple high-traffic databases (PostgreSQL, ElasticSearch, Redis)
    - Team structuring, recruitment, and implementation of Agile rituals: from 3 to 18 employees
    - Assistance in developing satellite applications using data (ETL, ClickHouse, Airflow, Pandas, Polars)
    Typescript PostgreSQL Elasticsearch Node.js Docker
  • Freelance
    Software engineer
    SOFTWARE PUBLISHING
    December 2018 - January 2026 (7 years and 1 month)
    Support for 10+ startups and scale-ups on high-impact missions.

    - Deployment of AI solutions (LLM, Whisper, LangChain)
    - Integrations with CRMs and accounting software (Salesforce, HubSpot, Attio, Pennylane, etc.)
    - Recruitment assistance. Technical tests and candidate evaluation (JS, Python, Docker, Go)
    - Skill development in various business domains (Fintech, GED, E-commerce, Public sector, Transport, Billing...)
    - User journey analysis (GA, Amplitude, Matomo) and monitoring (Datadog, OpenTelemetry)
    - Mentoring developers and advising on code and infrastructure architecture
    CRM Open Telemetry Generative AI Python JavaScript
  • Lucca
    Lead developer
    SOFTWARE PUBLISHING
    October 2014 - September 2018 (4 years)
    Paris, France
    Software engineer in a fast-growing HRIS (20 to 350 employees)

    - Rearchitecting of Cleemy's expense report management engine (.NET, SQL Server)
    - Development of a mobile application (TypeScript, Angular, Cordova)
    - Manager of a team of 4 developers and guarantor of deliverable quality
    C# SQL Server Angular .NET Typescript

Reviews

5.0

Out of 2 ratings

M

Mehdi

Développeur - Trackdéchets

Reviewed on 6/18/2026

Orion was one of the essential pillars of the Trackdéchets project for over seven years, embodying technical excellence and daily commitment. As lead dev, his deep expertise, rigor, and vision allowed him to overcome complex challenges and support the platform's ambitious evolution. His constant investment helped shape the tool we know today, but also inspired the team. Trackdéchets owes much of its success to his technical leadership and perseverance. A big thank you for this remarkable contribution.
E

Emmanuel

Trackdéchets

Reviewed on 10/22/2025

Orion has participated in the implementation of Trackdéchets from 2018 to 2025. He was involved in the dematerialization of hazardous waste traceability and in integrating the National Register functionalities into Trackdéchets. His commitment has led to broad recognition from industry stakeholders and has helped make Trackdéchets an innovative public project, emblematic of "State unicorns." As a full-stack developer, he initiated the code for the product, which has become a benchmark for all players in the waste ecosystem. His in-depth product expertise is a true source of knowledge. Orion is someone you want to work with, always in good spirits and very available. His active participation in discussions about developments and features, and in various workshops with professionals, makes him a valuable person for the product and for the team.

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Education

  • Generalist Engineer
    Mines de Douai
    2014
    Ingénieur généraliste avec une spécialisation en informatique.

Skill set

Categories