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Valentin HajekVH

Valentin Hajek

Fullstack Developer

€550/day
Nancy, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Valentin

🧠 Fullstack developer – Creator of custom web & mobile solutions

I design tailor-made digital solutions for VSEs and SMEs: webapps, internal tools, mobile applications, advanced showcase websites
 The goal: intelligent digitalization, combining automation, well-thought-out UX, and clean architecture.

Before writing a line of code, I take the time to understand:
  • How you work today
  • What slows you down
  • What you imagine (or not yet)

And often, what seems “impossible” is actually very feasible. It just requires the right technical approach.
My role is also that: to show you that it’s possible, and how to get there, simply.

🎯 What I bring:

  • A genuine product and user perspective
  • An ability to quickly identify the right levers (tech or UX)
  • Concrete solutions
  • Clear execution, from idea to launch and maintenance of your product

I work alone or with complementary profiles depending on the need (tech, product, business). The important thing for me: keeping a project coherent, useful, and well-executed & without unnecessary overhead.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Gan Assurance
    đŸ’Œ AssuDoc – Insurance Field WebApp
    BANKING AND INSURANCE
    January 2025 - May 2025 (4 months)
    Nancy, France
    Complete overhaul of client and document tracking for an insurance network.

    Objective: automate follow-ups, centralize contracts, and provide a real overview for the teams.

    I designed and developed a business webapp designed for their daily work: intuitive dashboard, complete contract lifecycle management (creation, documents, validation, signature), real-time prospect tracking, and automated follow-ups.

    âžĄïž The tool was designed to reduce mental load, prevent oversights, and save them considerable time on administrative tasks.
    Audit React NestJs MongoDB Yousign Electronic Signature Automation HR Automation Dashboard HR Digitalization SAAS UI/UX Design TailwindCSS
  • Iseah
    đŸ« ISEAH – Complete HR & Training Ecosystem
    SOFTWARE PUBLISHING
    July 2024 - May 2025 (10 months)

    Development of a complete digital ecosystem for the ISEAH Institute:

    ✅ Business WebApp

    Tailor-made platform to manage attendance, sessions, and relationships with employers and trainers:
    • Automatic session creation each month
    • Multiple roles (trainer, employer, learner)
    • Automated emails, certificate generation, dedicated views
    • Clear and comprehensive admin interface
    âžĄïž Structured project, designed as a SaaS product, with advanced business logic and robust performance.

    ✹ Modern Showcase Website

    • Design of an immersive and animated public website to enhance the institute's image:
    • Animated hero section, dynamic blocks
    • Modular design system
    • Easy updates via CMS
    • Optimized referencing (SEO)
    • Thematic pages for different audiences (candidates, employers, trainers)
    âžĄïž The site highlights both the institute's expertise and its human support capacity, with a strong focus on user experience.
    Audit Project Management React Next.js MongoDB Showcase Website webapp Artificial Intelligence
  • Estac
    âšœ ESTAC Troyes – Temporary Staff HR Platform
    HUMAN RESOURCES
    July 2023 - January 2024 (6 months)
    Nancy, France
    Creation of a tailor-made HR platform for the professional club ESTAC Troyes. Objective: simplify the management of temporary staff, events, and legal formalities.

    I developed a clear interface for the HR teams, with a dashboard, invitation management, attendance tracking, electronic signatures (Yousign), and automated pre-employment declarations (DPAE).

    âžĄïž Designed for field use, the platform reduces errors, streamlines event-based HR management, and structures previously scattered processes.
    React NestJs Dashboard HR Digitalization UI/UX Design Automation Electronic Signature Yousign SAAS MongoDB

Recommendations

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Former user and 3 other people have recommended Valentin

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Education

  • Master 2 (M2), Sciences cognitives
    Université de Lorraine
    2022
    Master 2 (M2), Sciences cognitives
  • Bachelor's Degree, MIASH
    University of Lorraine
    2020
    Licence, MIASH

Skill set

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