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William CaldwellWC

William Caldwell

Fullstack Engineer

€750/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About William

Expert in Linux & Free Software, I am a Systems, Network & Security Engineer by training, and have held various roles in my career:
- Development in functional languages (OCaml, Clojure, Guile)
- C development in the Linux kernel on embedded platforms
- Website deployment (DevOps, CI/CD, security: secret management, firewall, application security)
- Project & team management with agile methodology

In System Administration/DevOps: I can help you deploy open-source solutions, perform system administration (servers & user workstations), troubleshoot faulty systems, and secure services.
In Software Publishing, I can help you architect a system and code it in the language of your choice (I would recommend a functional language for the quality & robustness it provides).
In Data Processing, I can do scraping & cleaning/formatting.

On my website, I share my adventures in IT (and climbing); it is developed in OCaml with the Ocsigen stack & a PostgreSQL database and deployed with Guix.
  • English

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Ivehte
    R&D Director
    HEALTH AND WELLNESS
    January 2022 - January 2026 (4 years)
    Paris, France
    R&D Director: supervised the development of a website & mobile applications in React, a software suite to manage patient therapeutic education for healthcare professionals.
    Project Management
  • Besport
    Lead OCaml R&D developer
    SOFTWARE PUBLISHING
    January 2021 - December 2021 (11 months)
    Paris, France
    Lead OCaml R&D developer: responsible for a team of 10 OCaml developers for the website & mobile applications in Ocsigen. Besport is a social network around sports.
    Ocaml Team Management Ocsigen
  • 2MRW,
    CTO of 2MRW
    SOFTWARE PUBLISHING
    January 2019 - January 2020 (1 year)
    Paris, France
    CTO of 2MRW: development of a mobile application in Clojure then supervision of subcontracting.

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Education

  • Computer Engineering Student
    EPITA
    2009
    Étudiant en ingénierie en informatique
  • Scientific Baccalaureate with Physics option
    2004
    Baccalauréat Scientifique option Physique

Skill set

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