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Full Stack Developer with 26 years of software engineering experience, building AI-powered web products end to end in Next.js, React, TypeScript and Node.js on PostgreSQL. I integrate the OpenAI API and the Vercel AI SDK into real product features, and pair model output with rule-based logic where deterministic behaviour matters. I build Supabase and PostgreSQL backends with secure authentication, Row Level Security and least-privilege access for sensitive personal data, deploy on Vercel and AWS, and ship responsive interfaces that stay maintainable as scope grows. Available long-term on a part-time basis and comfortable delivering a working first version quickly.…Full Stack Developer with 26 years of software engineering experience, building AI-powered web products end to end in Next.js, React, TypeScript and Node.js on PostgreSQL. I integrate the OpenAI API and the Vercel AI SDK into real product features, and pair model output with rule-based logic where deterministic behaviour matters. I build Supabase and PostgreSQL backends with secure authentication, Row Level Security and least-privilege access for sensitive personal data, deploy on Vercel and AWS, and ship responsive interfaces that stay maintainable as scope grows. Available long-term on a part-time basis and comfortable delivering a working first version quickly.

Alessandro Barzanti

Full Stack Developer, Web Developer, Front-End Developer, +6

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Full Stack Developer with 26 years of software engineering experience, building AI-powered web products end to end in Next.js, React, TypeScript and Node.js on PostgreSQL. I integrate the OpenAI API and the Vercel AI SDK into real product features, and pair model output with rule-based logic where deterministic behaviour matters. I build Supabase and PostgreSQL backends with secure authentication, Row Level Security and least-privilege access for sensitive personal data, deploy on Vercel and AWS, and ship responsive interfaces that stay maintainable as scope grows. Available long-term on a part-time basis and comfortable delivering a working first version quickly.…Full Stack Developer with 26 years of software engineering experience, building AI-powered web products end to end in Next.js, React, TypeScript and Node.js on PostgreSQL. I integrate the OpenAI API and the Vercel AI SDK into real product features, and pair model output with rule-based logic where deterministic behaviour matters. I build Supabase and PostgreSQL backends with secure authentication, Row Level Security and least-privilege access for sensitive personal data, deploy on Vercel and AWS, and ship responsive interfaces that stay maintainable as scope grows. Available long-term on a part-time basis and comfortable delivering a working first version quickly.

Available to hire

Full Stack Developer with 26 years of software engineering experience, building AI-powered web products end to end
in Next.js, React, TypeScript and Node.js on PostgreSQL. I integrate the OpenAI API and the Vercel AI SDK into real
product features, and pair model output with rule-based logic where deterministic behaviour matters. I build Supabase
and PostgreSQL backends with secure authentication, Row Level Security and least-privilege access for sensitive
personal data, deploy on Vercel and AWS, and ship responsive interfaces that stay maintainable as scope grows.
Available long-term on a part-time basis and comfortable delivering a working first version quickly.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Italian

Fluent

Work Experience

Fullstack AI Integration Engineer at Checkatrade

February 1, 2026 - Present

Engineered Voice AI solutions using Vapi and ElevenLabs for automated interactions. Implemented RAG workflows and Model Context Protocol (MCP) for complex data retrieval. Developed robust backend services and integrations to support production AI features.

Freelance Full Stack Engineer at Self-Employed

April 1, 2025 - Present

Building React and Next.js applications with clean architecture and focus on developer experience; Developing backend APIs using Node.js and FastAPI with scalable, maintainable patterns; Architecting Supabase-based solutions with PostgreSQL, Row Level Security, and real-time features; Integrating AI capabilities using OpenAI API and Vercel AI SDK to enhance product experiences; Delivering end-to-end product features from prototyping to production deployment.

Lead Full Stack Engineer (Contract) at NewDay

September 1, 2023 - March 1, 2025

Planned and executed complete system rewrite, achieving ~20% processing efficiency improvement. Led team of 4 engineers; delivered 15+ new features on schedule with 99.9% system uptime. Oversaw 12 major releases and 50+ minor updates across fraud detection and dispute resolution modules.

Lead React Engineer (Contract) at Ambassador Theatre Group

May 1, 2022 - August 1, 2023

Delivered 6 new US sales websites in 12 months using shared design system, cutting development time ~50%. Planned and maintained company-wide design system adopted by 4 teams, reducing UI inconsistencies ~30%. Improved team velocity ~15% through process refinements and tooling improvements.

Senior/Lead Frontend Engineer (Contract) at UsTwo

December 1, 2021 - April 1, 2022

Delivered beta platform 2 weeks ahead of schedule with real-time matchmaking and chat features. Built scalable frontend architecture supporting thousands of concurrent users. Implemented real-time engagement features targeting ~40% user engagement uplift.

Co-CTO at Scale8

March 1, 2020 - October 1, 2021

Architected and implemented full UI with strong usability feedback; led product to #5 Product Hunt of the Day. Engineered TypeScript + InversifyJS backend with GraphQL; integrated BigQuery, Stripe, S3. Designed CI/CD pipeline with GitHub Actions, cutting deployment times ~25%. Built multi-product subscription payments, invoicing, and billing infrastructure.

Senior Software Engineer (Contract) at Arqiva

May 1, 2019 - March 1, 2020

Led AWS Lambda serverless migration, improving scalability and reducing infrastructure costs ~30%. Delivered multiple time-critical features for manufacturer testing and certification.

Senior Full Stack Developer (Contract) at Multiple Clients

January 1, 2010 - December 1, 2019

Worked across multiple client engagements including LifeWorks (employee wellness platform features), Venatus Media (high-performance ad-serving interfaces handling millions of daily impressions), and Ogilvy (interactive campaign microsites and data visualization dashboards for global brands).

Senior Full Stack Developer (Contract) at Multiple Clients: LifeWorks, Venatus Media, Ogilvy

January 1, 2010 - December 1, 2019

LifeWorks: Built employee wellness platform features serving enterprise clients across North America. Venatus Media: Developed high-performance ad-serving interfaces handling millions of daily impressions. Ogilvy: Delivered interactive campaign microsites and data visualization dashboards for global brands.

Software Engineer at Various Companies

January 1, 2000 - January 1, 2009

Early career roles building web applications and backend systems, establishing foundation in software engineering principles.

Education

BSc Computer Science at Università di Bologna, Italy

January 11, 2030 - January 1, 2002

BSc Computer Science at Università di Bologna

January 11, 2030 - January 1, 2002

BSc Computer Science at Università di Bologna, Italy

January 11, 2030 - January 1, 2002

BSc Computer Science at Università di Bologna

January 1, 2002 - January 1, 2002

BSc Computer Science at Università di Bologna

January 1, 2002 - August 25, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Financial Services, Computers & Electronics, Gaming, Education, Telecommunications, Healthcare