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Joseph WielJW

Average response time: 1 hour

Freelancer profile translated to English.
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About Joseph

Former Head of Product (Comet) and co-founder (raised €1.5M), I support companies in their product strategy and the management of tech/data teams. Hybrid profile: Aeronautical Engineer & Full-Stack Developer.
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Basic

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • Comet
    Head of Product (Product Strategy Manager)
    February 2021 - November 2024 (3 years and 9 months)
    Paris, France
    Full product management of a B2B multi-application information system covering the freelance space, key account client space, operational back-office, and internal data tools. Returned to Comet (formerly Skillee, co-founded in 2016) to lead the platform's redesign after a period of rapid growth. Definition and management of product strategy and roadmap, in direct contact with management (CEO, COO, CTO). Rebuilding the technical team with the CTO: 2 backend developers, 2 full-stack developers, 1 DevOps, 1 QA engineer, 3 data analysts — a total of 9 people. Implementation of agile product methodology (Scrum) from scratch: sprint planning, sprint reviews, demos, retrospectives, backlog management, impact-based prioritization. Field research with end-users (freelancers and key account decision-makers): interviews, user testing on mockups, functional acceptance. Construction and monitoring of product indicators: usage metrics, completion rates, user satisfaction, NPS, matching conversion and quality indicators. Writing functional and technical specifications (product requirements documents, user stories, acceptance criteria). Management of progressive deployments (feature flags, beta users) and change management. Coordination of internal stakeholders (sales, support, operations teams) and external service providers. Keywords: product management, head of product, Agile/Scrum, UX research, product strategy, roadmap, OKR, KPIs, Figma, Jira, Notion, SQL, Google Analytics, Metabase, B2B SaaS, marketplace, multidisciplinary team management.
    Agile methodology Management of multidisciplinary teams
  • Konbini
    Product Designer & Development Lead
    September 2020 - December 2020 (3 months)
    Paris, France
    Product design and development management mission for the creation of a micro-donation feature integrated directly into konbini.com, allowing readers to support the platform's content creators. Functional scoping with Konbini teams (product, editorial, tech): definition of scope, use cases, and technical integration constraints. Writing functional and technical specifications: product requirements, user stories, acceptance criteria. Feature design: wireframes, high-fidelity mockups (Figma), interactive prototype for internal validation. Lead of a team of 2 outsourced developers: work organization in sprints, progress reviews, priority management, and trade-offs. Coordination with internal Konbini teams for integration into the site's existing architecture, functional acceptance, and delivery. Keywords: product design, UX/UI, Figma, functional specifications, outsourced team management, product management, feature delivery, Agile, web development.
  • Handsome
    Product Designer & Development Lead
    February 2020 - October 2020 (8 months)
    Paris, France
    Product design and development management mission for a banking mobile application (fintech) specifically designed for visually impaired individuals. Digital accessibility context requiring strong design, ergonomics, and compliance constraints. Product scoping: definition of personas, user journey mapping, feature prioritization based on impact and accessibility constraints. Design of the mobile application architecture respecting digital accessibility standards: screen reader navigation, WCAG contrasts, dynamic text size management. Interface design: wireframes, accessible high-fidelity mockups (Figma), coherent and reusable design system. Management of a 3-person team (1 designer, 2 developers): leading progress meetings, priority management, technical trade-offs. Development monitoring up to delivery: functional acceptance, user testing, bug fixing, and adjustments. Keywords: product management, UX/UI, digital accessibility, WCAG, Figma, mobile design, team management, Agile, fintech, product delivery.

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Education

  • Master 2, Aeronautical Engineer
    Institut Polytechnique des Sciences Avancées
    2014
  • Web developer training
    Le Wagon
    2019
    Développement web full-stack (Ruby on Rails, JavaScript)

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