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Technical Lead and Full Stack Developer with 15+ years of experience delivering enterprise-grade applications across React, Angular, NestJS, and .NET Core. Proven track record leading cross-functional teams and designing scalable architectures for clients in the US and LATAM. Skilled at transforming complex requirements into maintainable, high-performance systems deployed on AWS and Azure. Committed to clean code, modern design patterns, and mentoring engineers to deliver their best work.…Technical Lead and Full Stack Developer with 15+ years of experience delivering enterprise-grade applications across React, Angular, NestJS, and .NET Core. Proven track record leading cross-functional teams and designing scalable architectures for clients in the US and LATAM. Skilled at transforming complex requirements into maintainable, high-performance systems deployed on AWS and Azure. Committed to clean code, modern design patterns, and mentoring engineers to deliver their best work.

William Vega

Full Stack Developer, Web Developer, Front-End Developer, +2

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Technical Lead and Full Stack Developer with 15+ years of experience delivering enterprise-grade applications across React, Angular, NestJS, and .NET Core. Proven track record leading cross-functional teams and designing scalable architectures for clients in the US and LATAM. Skilled at transforming complex requirements into maintainable, high-performance systems deployed on AWS and Azure. Committed to clean code, modern design patterns, and mentoring engineers to deliver their best work.…Technical Lead and Full Stack Developer with 15+ years of experience delivering enterprise-grade applications across React, Angular, NestJS, and .NET Core. Proven track record leading cross-functional teams and designing scalable architectures for clients in the US and LATAM. Skilled at transforming complex requirements into maintainable, high-performance systems deployed on AWS and Azure. Committed to clean code, modern design patterns, and mentoring engineers to deliver their best work.

Available to hire

Technical Lead and Full Stack Developer with 15+ years of experience delivering enterprise-grade applications
across React, Angular, NestJS, and .NET Core. Proven track record leading cross-functional teams and designing
scalable architectures for clients in the US and LATAM. Skilled at transforming complex requirements into
maintainable, high-performance systems deployed on AWS and Azure. Committed to clean code, modern design
patterns, and mentoring engineers to deliver their best work.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Context Architect / R&D Lead at Independent Research & Development – The Context Architect

January 1, 2023 - Present

Self-directed R&D in agentic and generative AI systems; prototype workflows combining Python, FastAPI, LangChain and React. Built AI-assisted developer tools that generate frontend components from user stories; explored prompt engineering for production use. Produced educational content on AI architectures via The Context Architect YouTube channel; prototyped rich tech stacks with Pandas and data pipelines to enable ML-informed features.

Full Stack Lead (Consulting) at App OnBox

January 1, 2021 - January 1, 2023

Delivered short-term engagements designing and deploying full-stack applications using React, NestJS and .NET Core on AWS. Led frontend teams, mentored developers; implemented CI/CD pipelines with GitHub Actions and Docker. Implemented GraphQL and REST API layers integrated with PostgreSQL and Elasticsearch for search-heavy features. Aligned technical delivery with product goals by collaborating with stakeholders and product managers.

Senior Software Engineer / Tech Lead at Geo Systems Online

January 1, 2020 - January 1, 2021

Directed multiple web and mobile projects for US-based startups, architecting SaaS platforms with React, Angular, Node.js and ASP.NET Core. Mentored engineers; implemented Agile processes, improving delivery cadence and code quality across teams. Designed back ends using SQL Server, Firebase and MySQL; ownership of deployments and production troubleshooting. Combined client consulting with hands-on delivery, translating business needs into scalable technical solutions.

Software Engineer / Developer at Various / Independent Roles

January 1, 2005 - January 1, 2010

Earlier Roles in .NET development, web apps and SEO tools; details available on request. Prototyped AI-driven development tools; contributed to Context Architect prototypes and demos; built SEO tooling and back-end services.

Software Development Lead at La Enciclopedia

January 1, 1999 - January 1, 2005

Led a 10-engineer team building one of the first large-scale Spanish digital encyclopedias; crafted server components in C#/ASP.NET and multimedia integrations. Established development standards, unit testing culture and operational practices.