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Marian George GrosuMG

Marian George Grosu

Founder and full-stack developer

€500/day
Les Herbiers, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marian George

You are launching or evolving a sensitive web product: APIs, payments, user data, or AI agents that call critical tools. I help you deliver quickly without sacrificing security: Node.js API design, React or Next.js interfaces, databases, Stripe and transactional messaging integration, CORS hardening, secrets, JWT, and safeguards for agentic workflows (control, logging, policies). I address founders, PMs, and legal or compliance teams who need a technical contact capable of translating specifications into concrete deliverables: architecture, code, concise documentation, production deployment behind a reverse proxy. My differentiator: end-to-end product experience (marketplace with escrow, LegalTech, OpenAPI and risk analysis tools) and independent technical audit capability, with structured reports and actionable recommendations. Usual types of missions: security reinforcement of an existing API, setting up a subscription flow, pre-funding round review, platform forensic audit, support for micro-enterprises or scale-ups on hosting and deployment. Based in Les Herbiers. Local intervention and international remote collaboration.
  • French

    Native or bilingual

  • English

    Fluent

  • Romanian

    Native or bilingual

Can work on-site
Les Herbiers (up to 50km)

Experience

  • AlfaNestLabs
    Founder and full-stack developer
    SOFTWARE PUBLISHING
    March 2026 - Today (3 months)
    Les Herbiers, France
    AlfaNest Labs is an independent French studio that designs secure web products and public experiments at the crossroads of Web3, infrastructure, and applied security. We combine forensic-level rigor with rapid iteration: clear APIs, honest user journeys, and production-ready deployments, not just presentations. The lab manages several online platforms. WASTE.LAND (alfanest.digital) is a marketplace for abandoned software projects: assisted audits (Overseer), Vault escrow, and Scraps economy, so that listings and transactions follow explicit rules. Clearance (cl.alfanestlabs.com) is our decision-oriented and compliance layer for project workflows. On app.alfanestlabs.com, API Risk Monitor transforms OpenAPI specifications into actionable risk signals, while Agent Security adds a control layer in front of agentic systems' risky actions — policy, audit trail, and logic for evolving towards billing. We maintain the public website alfanestlabs.com (static pages, pricing, lab-type views) and integrate hosting, domain names, and server APIs when the product requires it. On the technical side: Node.js, React, and Next.js, PostgreSQL and MySQL, Stripe for subscriptions, and common security practices (JWT, CORS, secrets management, structured errors). AlfaNest Labs is registered in France (Vendée). For partnerships, integrations, or professional exchanges, use the channels indicated on the website. We are open to serious teams, security-conscious individuals, and product collaborations beyond just the crypto narrative.
    Application security Full-stack development Operations Product architecture
  • AlfaNest Labs
    Founder and lead developer
    SOFTWARE PUBLISHING
    April 2026 - Today (2 months)
    France
    Project structure, product design, development, and operations. WASTE.LAND (alfanest.digital) marketplace for abandoned software projects, deposit audit, Vault escrow, Scraps economy, and Wasteland ranking — Node.js stack and static front. Clearance (cl.alfanestlabs.com) decision layer and compliance workflows oriented towards projects and identity. Risk Monitor and Security (app.alfanestlabs.com): OpenAPI analysis products and agent tool governance, subscriptions, and application integration. Lab showcase sites (alfanestlabs.com), forms, and internal tools, deployment, and maintenance.
    Product architecture Application security Marketing Online payment auctions
  • alfanestlabs
    Audit
    CONSULTING AND AUDITS
    March 2026 - March 2026
    Les Herbiers, France
    Independent technical audit (forensic) — evaluation of the deployed state against specifications, technical findings, formal certification report (Milestone 2), delivered in March 2026.
    Technical audit Full-stack development Web Security GDPR Compliance

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