John Alfred Reyes
Senior Full Stack Developer
I'm a Senior Full Stack Engineer with 7 years of experience designing, building, and delivering reliable, user-friendly applications using modern JavaScript technologies and cloud architecture. I focus on creating high-quality solutions that are clean, maintainable, and built to grow. Beyond writing code, I bring leadership experience in guiding technical decisions, improving development workflows, and helping teams ship better products with confidence.
About Me
I’m a Senior Full Stack Engineer with 7 years of experience building scalable, high-quality web applications, cloud-based solutions, and automation tools. My work focuses on turning business goals into reliable products, from full stack development and API design to performance optimization, cloud deployment, and workflow automation.
I specialize in the MERN stack, modern JavaScript frameworks, and AWS, with hands-on experience across React, Next.js, Node.js, TypeScript, databases, serverless architecture, third-party integrations, and the OpenAI API. I also use AI-driven development tools in my day-to-day workflow to speed up implementation, improve code quality, explore solutions faster, and deliver better results more efficiently.
Beyond building software, I bring leadership experience in guiding teams, mentoring developers, improving development workflows, and collaborating closely with product, design, and engineering teams. I care about writing maintainable code, building systems that scale, and delivering solutions that are technically strong, practical, and user-focused.
Name
John Alfred Reyes
john.alfredrys@gmail.com
Location
Metro Manila, Philippines
Degree
BS Information Technology
Experience
7 years
Freelance
Available
Skills
React
Next.js
Nuxt.js
Vue3
JavaScript
TypeScript
HTML/CSS
Tailwind CSS
Redux
Work Experience
Sr. Full Stack Engineer
Freelance
Remote
I now work as a freelance Sr. Full Stack Engineer, helping businesses build high-quality, scalable, and maintainable software systems. My focus is on delivering solutions that are not only functional, but also reliable, secure, and aligned with real business goals. Beyond writing code, I bring a leadership-driven approach to every engagement—guiding technical direction, improving development workflows, and helping teams make better engineering decisions. I value clear communication, strong execution, and building systems that can grow with the business.
Key Responsibilities:
- Led a team of developers to build a high-quality custom CRM for a client in the US
- Turned business requirements into technical solutions, ensuring the system is scalable, maintainable, and aligned with the client's business goals.
- Improved development workflows, ensuring the team is productive and efficient.
- Helped the team make better engineering decisions, ensuring the system is technically sound and aligned with the best practices.
- Provided technical guidance and mentorship to the team, ensuring they are able to build the system themselves.
- Ensured the system is secure and compliant with the latest security best practices.
- Ensured the system is scalable and can grow with the business.
- Ensured the system is maintainable and can be updated easily.
- Ensured the system is aligned with the latest technologies and best practices.
Sr. Full Stack Engineer
Unicty International
Taguig City, Philippines - Hybrid
Developed a distributor tool that to help distributors manage and grow their business and organization. Streamlined and improve processes through automation and AI.
Key Responsibilities:
- Pioneered an AI translation automation & deployment pipeline, cutting process time from 3 days to under 5 minutes.
- Developed a referral-link feature that boosted customer sales by 30%.
- Led performance optimizations, improving page load speeds by 80%.
- Streamlined the deployment process for new markets reducing the total time from 3 hours to around 10 minutes.
- Responsible for improving our product's translation layers enabling us to serve multiple markets with different languages serving 98% accurate translated values.
Software Engineer
Cognization Softvision
Makati City, Philippines - Hybrid
Co-led and agile team that developed an auditing assurance system for one of US's largest auditing companies. The system is used to streamline and automate the auditing process of the company.
Key Responsibilities:
- Co-led an Agile team to build an auditing-assurance platform for enterprise clients that streamlines auditing processes and increased their revenue by 20%.
- Architected and optimized production critical ETL and suggestion services written in Node.js and Transact- SQL reducing total execution time by 15%.
- Designed a data heavy analytics page and optimized the page performance by 15%.
Full Stack Engineer
Locale Europe LTD (Through Cloud Employee Inc. * Lay-off)
Greater London, UK - Remote (From Philippines)
Responsible for developing an SaaS platform that helps companies manage and order translations for their products.
Key Responsibilities:
- Led the end-to-end integration of new partner systems into our core platform, cutting manual onboarding effort by 95% and accelerating time-to-live from 2 weeks to 3 days.
- Designed and deployed external microservices using Node.js, AWS and Lambda, optimizing API response times by 40% and reducing infrastructure costs by 20%.
- Integrated 3rd party APIs—automating sync of over 2,000 records/day and reducing data-mismatch errors by 90%.
- Developed a new Contentful powered website that drove a 20% lift in monthly traffic and slashed full-stack deployment time by 30%.
Software Engineer
Yondu Inc
Taguig City, Philippines - Remote
Led an agile team that developed a digital credential application powered by blockchain technology that enables users to store and verify real-world credentials.
Key Responsibilities:
- Spearheaded a blockchain‑based digital credential project that allowed users to seamlessly save their IDs over our application and use it as a true identifiable copy.
- Developed an NFT market place using React.js to promote the partnerships of our clients and increased their annual revenue by 12%.
Web Developer
Cafe24 Philippines
Pasig City, Philippines
Part of an internal team that develops internal applications for business growth and analytics.
Key Responsibilities:
- Built an internal data-visualization app with advanced filters across 10+ dimensions, enabling stakeholders to generate custom reports 40% faster.
- Developed services using Node.js, Typescript, Python, MySQL and GraphQL for a customer targeting system that served 100k+ customers across Korea.
Projects
Explore some of my recent web development projects. Each project showcases different technologies and problem-solving approaches.
Homeqube
AI and blockchain powered platform that allows users to bid and build homes thru gamification.
Denamiq
Denamiq is a digital marketing outsourcing partner that connects global businesses with highly skilled, English-fluent Filipino marketing professionals.
NorthStar CRM
NorthStar CRM is a CRM system used by one of the leading and trusted destination services in the USA to manage their clients and orders.
Testimonials
“I worked with Alfred for about half a year, but I would say that he is one of the great people that I've worked with. He consistently delivers value to the project with high quality and is always up to the challenge. He shows good qualities of a senior developer and is always supporting the team to be able to deliver value.”
Ricardo Calingan
Project Lead, Cognizant Softvision
Contact Me
Get In Touch
Have a project in mind or want to discuss potential opportunities? Feel free to reach out. I'm open to freelance work, full-time positions, or just connecting with fellow developers.