Alfredo Barrera

Available to hire

js, React, and cloud platforms like AWS. I’ve built scalable SaaS products, data-driven applications, and high-performing APIs that support thousands of users.

About

I’m a developer who specializes in full-stack web development, with deep expertise in JavaScript, TypeScript, Node.js, React, and cloud platforms like AWS. I’ve built scalable SaaS products, data-driven applications, and high-performing APIs that support thousands of users. What differentiates me from other developers is my ability to work end-to-end across the stack, from architecting backend systems to delivering polished front-end user experiences, while also mentoring teams and aligning technical work with real business goals. I also bring experience in fintech, enterprise software, and SaaS platforms, giving me strong domain knowledge in building secure, high-availability applications.

Languages

  • EnglishFluent

Industry experience

  • Software & Internet
  • Financial Services
  • Healthcare
  • Non-Profit Organization
  • Media & Entertainment

More experts in Angeles, Philippines

Projects · 1

Work experience· 14 roles

Senior Full Stack Developer · PQS SoftwareDec 2024 – Sep 2025 · 10 mos

Developed and integrated AI-based modules to enhance tax-related query resolution. Designed scalable web architecture using React.js, Node.js, and NestJS. Implemented RAG functionalities and AI API integrations such as OpenAI and Anthropic. Worked on advanced data processing and tax workflows. Developed responsive interfaces with Shadcn and Tailwind CSS. Optimized MySQL queries for performance and collaborated in agile teams.

Senior Full Stack Developer · PQS SoftwareDec 2024 – Jul 2025 · 8 mos

Developed and integrated AI-based modules to enhance tax-related query resolution. Designed and optimized scalable web application architecture using React.js, Node.js, and NestJS. Implemented Retrieval-Augmented Generation functionalities and integrated AI APIs including OpenAI and Anthropic. Engineered prompt-based AI solutions and worked on advanced data processing and tax workflows. Built responsive user interfaces with Shadcn and Tailwind CSS, optimized MySQL queries, and collaborated effectively in Agile teams with cross-functional stakeholders.

iOS App Developer · Solve.Care FoundationDec 2023 – Sep 2025 · 1 yr 10 mos

Developed a modern iOS app using SwiftUI and MVVM architecture. Implemented Core Data for protocol management and utilized async/await for API concurrency. Integrated social login via Facebook, WhatsApp, and Gmail. Leveraged blockchain tools (Web3swift, CryptoSwift) for secure transactions. Implemented Firebase notifications, deep linking, and BinancePay payments with SOLVE tokens.

iOS App Developer · Solve.Care FoundationDec 2023 – Jul 2025 · 1 yr 8 mos
Senior Full Stack Developer · BXDXApr 2022 – Sep 2025 · 3 yrs 6 mos
Senior Full Stack Developer · BXDXApr 2022 – Jul 2025 · 3 yrs 4 mos
iOS App Developer · School Hack AIApr 2021 – Sep 2025 · 4 yrs 6 mos
iOS App Developer · School Hack AIApr 2021 – Jul 2025 · 4 yrs 4 mos

Education

Bachelor of Science · University of Santo Tomas2010 – 2015

Testimonials · 5.0 from 1 review

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