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I am Richard Alfonso, a strategic Senior Full Stack Developer and AI Automation Engineer based in the Philippines. I have 7+ years delivering high-performance web apps and autonomous AI systems, specializing in Python (FastAPI), Node.js/TypeScript, and Ruby on Rails. I excel at bridging backend engineering with automation platforms like Make, n8n, and Zapier to design scalable, end-to-end solutions. As a former CTO, I value code quality, scalable architectures, and pragmatic modernization of legacy environments. I have led projects ranging from DeFi protocols to AI-driven business operating systems and centralized crypto exchanges, turning complex concepts into globally deployed production systems. I’m passionate about building maintainable systems and empowering teams with solid engineering practices.…I am Richard Alfonso, a strategic Senior Full Stack Developer and AI Automation Engineer based in the Philippines. I have 7+ years delivering high-performance web apps and autonomous AI systems, specializing in Python (FastAPI), Node.js/TypeScript, and Ruby on Rails. I excel at bridging backend engineering with automation platforms like Make, n8n, and Zapier to design scalable, end-to-end solutions. As a former CTO, I value code quality, scalable architectures, and pragmatic modernization of legacy environments. I have led projects ranging from DeFi protocols to AI-driven business operating systems and centralized crypto exchanges, turning complex concepts into globally deployed production systems. I’m passionate about building maintainable systems and empowering teams with solid engineering practices.

Richard Alfonso

Full Stack Developer, Web Developer, Back-End Developer, +7

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I am Richard Alfonso, a strategic Senior Full Stack Developer and AI Automation Engineer based in the Philippines. I have 7+ years delivering high-performance web apps and autonomous AI systems, specializing in Python (FastAPI), Node.js/TypeScript, and Ruby on Rails. I excel at bridging backend engineering with automation platforms like Make, n8n, and Zapier to design scalable, end-to-end solutions. As a former CTO, I value code quality, scalable architectures, and pragmatic modernization of legacy environments. I have led projects ranging from DeFi protocols to AI-driven business operating systems and centralized crypto exchanges, turning complex concepts into globally deployed production systems. I’m passionate about building maintainable systems and empowering teams with solid engineering practices.…I am Richard Alfonso, a strategic Senior Full Stack Developer and AI Automation Engineer based in the Philippines. I have 7+ years delivering high-performance web apps and autonomous AI systems, specializing in Python (FastAPI), Node.js/TypeScript, and Ruby on Rails. I excel at bridging backend engineering with automation platforms like Make, n8n, and Zapier to design scalable, end-to-end solutions. As a former CTO, I value code quality, scalable architectures, and pragmatic modernization of legacy environments. I have led projects ranging from DeFi protocols to AI-driven business operating systems and centralized crypto exchanges, turning complex concepts into globally deployed production systems. I’m passionate about building maintainable systems and empowering teams with solid engineering practices.

Available to hire

I am Richard Alfonso, a strategic Senior Full Stack Developer and AI Automation Engineer based in the Philippines. I have 7+ years delivering high-performance web apps and autonomous AI systems, specializing in Python (FastAPI), Node.js/TypeScript, and Ruby on Rails. I excel at bridging backend engineering with automation platforms like Make, n8n, and Zapier to design scalable, end-to-end solutions.

As a former CTO, I value code quality, scalable architectures, and pragmatic modernization of legacy environments. I have led projects ranging from DeFi protocols to AI-driven business operating systems and centralized crypto exchanges, turning complex concepts into globally deployed production systems. I’m passionate about building maintainable systems and empowering teams with solid engineering practices.

Skills

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Intermediate

Language

English

Fluent

Work Experience

Senior Full-Stack Engineer at Appnovation

February 1, 2021 - December 1, 2025

Built and maintained scalable web applications using the MERN stack. Engineered front-end interfaces with React and Next.js and back-end services with Node.js and Express, exposing RESTful APIs. Designed and optimized MongoDB and SQL-based databases. Improved application performance, reduced technical debt, and delivered reliable solutions through clean architecture, testing, and modern DevOps practices. Collaborated with cross-functional teams to translate business requirements into technical solutions used by 10k+ users. Implemented PayPal and Stripe for secure transaction processing. Architected online booking and calendar management systems with automated notifications and reminder workflows. Deployed and scaled services on AWS for hosting, storage, reliability, and performance.

Senior Backend Developer

September 1, 2018 - June 1, 2019

Built and maintained backend features using modern JavaScript frameworks, RESTful APIs, and relational/non-relational databases. Reduced integration issues between front-end applications and back-end services, decreasing data-related bugs and improving system reliability. Refactored legacy code to upgrade application stability and implemented better error handling and validation. Developed custom WordPress themes and plugins tailored to business needs. Documented and standardized API contracts to support frontend teams. Key fixes included addressing unstructured backend logic, data integrity issues, and unclear API contracts.

Senior Backend Developer at Lightweight Solutions

August 1, 2019 - December 1, 2020

Focused on backend development, building APIs, handling authentication, and managing database schemas. Boosted data-handling and business-logic challenges by designing clear service layers and reusable components. Improved system reliability by implementing validation, logging, and basic monitoring. Developed custom WordPress themes and plugins tailored to business needs. Supported frontend teams by ensuring APIs were well documented and consistent. Key problems fixed: Unstructured backend logic, data integrity issues, and unclear API contracts.

Senior Backend Developer at Remote

September 1, 2018 - June 1, 2019

Built and maintained full-stack features using modern JavaScript frameworks, RESTful APIs, and relational/non-relational databases. Reduced integration issues between front-end applications and back-end services, decreasing data-related bugs and improving system reliability. Upgraded application stability by refactoring legacy code and implementing better error handling and validation. Worked closely with designers and product managers to deliver features aligned with user needs and business goals. Key fixes included scalability limits, performance degradation, and technical debt in growing production systems. Delivered small- to medium-scale web applications for international clients under tight deadlines. Resolved diverse client problems including UI bugs, back-end logic errors, and feature enhancements. Built strong cross-functional collaboration and communication.

Full Stack Engineer at Appnovation

February 1, 2021 - December 31, 2025

Built and maintained scalable web applications using the MERN stack. Designed and developed frontends with React and Next.js and backends with Node.js, with MongoDB/SQL databases. Implemented modular architectures, optimized API design, and integrated payments (PayPal, Stripe). Led end-to-end development of scalable web applications, owning system design decisions across frontend, backend and database layers. Deployed on AWS, collaborated with product and QA teams, and mentored junior engineers.

Senior Full-Stack Engineer at Lightweight Solutions

September 1, 2018 - June 30, 2019

Built and maintained full-stack features using modern JavaScript frameworks, RESTful APIs, and relational/non-relational databases. Reduced integration issues between frontend and backend, improving reliability. Upgraded application stability by refactoring legacy code and implementing better error handling and validation. Delivered small to medium-scale web applications for international clients under tight deadlines.

Senior Full-Stack Software Engineer

February 1, 2021 - December 31, 2025

Led end-to-end development of scalable web applications across frontend, backend, and database layers using the MERN stack. Implemented robust APIs (REST/GraphQL), improved performance, and introduced modular architectures for long-term maintainability. Collaborated with cross-functional teams to translate business requirements into technical solutions; integrated payments, booking, and calendar features; optimized API response times and ensured security and reliability.

Full-Stack Developer at Lightweight Solutions

September 1, 2018 - June 30, 2019

Remote role focusing on backend development, API design, authentication, and data modelling; introduced clear service layers and reusable components; improved system reliability via validation and monitoring; contributed custom WordPress themes and plugins tailored to business needs.

Lead AI & Automation Engineer at 10xcoach.ai

January 1, 2024 - Present

Architected an end-to-end AI-powered business coaching ecosystem featuring eight ElevenLabs voice agents for executive decision support. Implemented production-grade automation with Make.com and n8n to synchronize coaching outputs with CRM systems and task lists. Built custom scraping and embedding pipelines for semantic search across proprietary datasets. Integrated Stripe payments, created a referral system, and launched a partner program with automated payouts.

Full Stack Developer at playhold.io

December 1, 2023 - December 1, 2024

Built a Web3 escrow marketplace for game items using Next.js (App Router) and Supabase (PostgreSQL, Auth, Row Level Security). Implemented wallet-based authentication (MetaMask, Rainbow), escrow checkout flow, and real-time order chat. Designed multi-tenant isolation with Supabase RLS and deployed on Vercel.

Senior Full Stack Consultant | AI & Web3 Specialist

February 1, 2023 - Present

Executed technical strategy for international clients, deploying autonomous AI agents that replaced manual administrative workflows and delivered substantial efficiency gains. Led oni.network, a high-traffic production platform, ensuring 99.9% uptime and real-time data synchronization. Modernized legacy systems into modular TypeScript microservices and advised on scalable architecture.

Senior Front-end & Backend Engineer at Drops DAO

May 1, 2022 - December 1, 2023

Spearheaded frontend architecture for a decentralized NFT lending/borrowing protocol, prioritizing security and high-performance data rendering. Integrated Web3 smart contracts with React interfaces to manage high-value transactions and real-time asset valuation.

Chief Technology Officer (CTO) at Crionx LLC

October 1, 2020 - May 1, 2022

Chaired the technical roadmap and led a cross-functional team in building scalable, enterprise-grade component libraries. Implemented Git-based peer reviews and automated CI/CD, reducing production regressions by over 40%. Designed PostgreSQL schemas to support complex data relationships for client applications.

Lead Ruby on Rails Developer at Peatio (Centralized Crypto Exchange)

December 1, 2017 - August 1, 2021

Led the development of 5+ high-volume centralized crypto exchanges. Architected core trading engine, order book management, and matching engine using Ruby on Rails and Rust, with Kafka/RabbitMQ for event streaming. Built RESTful APIs and WebSocket feeds; deployed on AWS with load balancing, Redis caching, and database sharding; mobile apps via React Native; maintained CI/CD and 24/7 on-call rotations.

Senior Software Developer at Drops DAO

May 1, 2022 - December 1, 2023

Led frontend architecture for a decentralized NFT lending/borrowing protocol, focusing on security and high-performance data rendering. Integrated complex Web3 contracts with React interfaces to handle high-value transactions and real-time asset valuation.

Full Stack & Mobile Developer at Soundac

January 1, 2018 - December 1, 2019

Engineered cross-platform mobile applications using React Native, delivering a consistent UI across iOS and Android. Built native modules, oversaw platform configurations, and managed the mobile lifecycle from development through App Store/Play Store submission.