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Salvatore CrinitiSC

Salvatore Criniti

Freelance Senior Full Stack Developer

€290/day
Crotone, IT
8-15 years

Average response time: 1 hour

About Salvatore

Senior fullstack developer with 8+ years of experience, now CTO and founder of KrystalCode.
Background: I worked as Frontend Team Leader at Nexi, Senior Full Stack at Iagica and IGT, and Senior Web Developer at Palmabit. Today I manage freelance projects and my own SaaS products (GenQR, FinderLead).
What I bring to a project:
•Modern, idiomatic stack - no overengineering, no unnecessary boilerplate
•Ability to handle the full cycle: from architecture to production deployment
•Hands-on infrastructure experience: Docker Swarm + Traefik in production, disaster recovery, monitoring
•CTO mindset: I help make technical decisions aligned with business goals, not just write fancy code
Types of projects I work best on:
•MVPs for early-stage startups (Next.js + Strapi + Postgres)
•Legacy codebase refactoring (especially ORM migrations)
•Security audits and hardening (Strapi/Next.js following OWASP Top 10)
•Production-ready infrastructure setup (Hetzner/Contabo VPS, Docker Swarm, Traefik)
•Fractional CTO for growing teams
Italian VAT number active, standard EU invoicing. Intra-EU reverse charge for non-Italian EU clients.
To learn more: krystalcode.com​​​​​​​​​​​​​​​​
  • English

    Native or bilingual

  • Italian

    Native or bilingual

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

Experience

  • Webidoo Engineering
    Tech Lead
    DIGITAL AND IT
    January 2024 - January 2025 (1 year)
    • ● Led a cross-functional team of 6 to 10 engineers (frontend, backend, DevOps) across 3 client projects, maintaining shared quality and security standards across all layers.
    • ● Rebuilt a client e-commerce platform that was losing ~1,000 orders/month due to technical failures, resulting in an additional ~100,000 EUR/month in recovered revenue.
    • ● Designed and delivered an internal content request platform replacing Excel-based workflows, reducing average request processing time by 80%.
    • ● Introduced structured code review processes and shared architecture guidelines, accelerating junior developer growth and reducing accumulating technical debt.
    • ● Served as the main technical point of contact with clients, translating business requirements into actionable technical estimates and priorities.
    Node.js Next.js Strapi Supabase Team management
  • Self Employee
    Freelance Senior Full Stack Developer
    January 2025 - Today (1 year and 7 months)
    • ● Designed and delivered + custom web projects (e-commerce, landing pages, web apps), owning the full cycle from technical scoping to production and cutting time-to-market for each client.
    • ● Introduced CI/CD pipelines and Docker containerisation across all projects, eliminating dev/prod inconsistencies and reducing infrastructure costs.
    • ● Standardised a production-grade stack (Next.js, Strapi, Docker Swarm, BullMQ) across engagements, reducing project bootstrap time and improving long-term maintainability.
    • ● Handled client communication and requirements definition directly, reducing revision cycles and aligning expectations from day one.
  • Esprimo
    Senior IT Consultant
    January 2023 - January 2024 (1 year)
    • ● Lutech: Developed full-stack features for enterprise insurance software, contributing to analysis and implementation of critical policy management modules.
    • ● Sopra Steria / Cedacri: Built banking solutions in a regulated, high-reliability enterprise environment, working on full-stack analysis and development.

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Education

  • Technical Expert Diploma
    ITIS E. Santoni, Crotone
    2015
    Technical Expert Diploma

Skill set

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