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Hi, I’m Miguel Ángel Muñoz, a Full Stack Engineer who enjoys building scalable web applications, AI-powered workflows, and developer tooling. I’ve led design system initiatives, implemented RAG pipelines for document ingestion, and built cloud-native backends and frontends for multi-client SaaS products. I thrive in async-first teams and am comfortable spanning from product discovery through production rollout, with a focus on maintainable code, robust testing, and clear documentation. I’m based in Brazil and have extensive experience working remotely with international teams, mentoring colleagues, and delivering rapid value in fast-paced environments. I advocate for accessibility, performance, and security (including HIPAA and ISO 27001 considerations) across projects, and I enjoy turning complex challenges into elegant, reliable solutions.…Hi, I’m Miguel Ángel Muñoz, a Full Stack Engineer who enjoys building scalable web applications, AI-powered workflows, and developer tooling. I’ve led design system initiatives, implemented RAG pipelines for document ingestion, and built cloud-native backends and frontends for multi-client SaaS products. I thrive in async-first teams and am comfortable spanning from product discovery through production rollout, with a focus on maintainable code, robust testing, and clear documentation. I’m based in Brazil and have extensive experience working remotely with international teams, mentoring colleagues, and delivering rapid value in fast-paced environments. I advocate for accessibility, performance, and security (including HIPAA and ISO 27001 considerations) across projects, and I enjoy turning complex challenges into elegant, reliable solutions.

Miguel Ángel Muñoz

Full Stack Developer, Developer, Web Developer, +5

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Hi, I’m Miguel Ángel Muñoz, a Full Stack Engineer who enjoys building scalable web applications, AI-powered workflows, and developer tooling. I’ve led design system initiatives, implemented RAG pipelines for document ingestion, and built cloud-native backends and frontends for multi-client SaaS products. I thrive in async-first teams and am comfortable spanning from product discovery through production rollout, with a focus on maintainable code, robust testing, and clear documentation. I’m based in Brazil and have extensive experience working remotely with international teams, mentoring colleagues, and delivering rapid value in fast-paced environments. I advocate for accessibility, performance, and security (including HIPAA and ISO 27001 considerations) across projects, and I enjoy turning complex challenges into elegant, reliable solutions.…Hi, I’m Miguel Ángel Muñoz, a Full Stack Engineer who enjoys building scalable web applications, AI-powered workflows, and developer tooling. I’ve led design system initiatives, implemented RAG pipelines for document ingestion, and built cloud-native backends and frontends for multi-client SaaS products. I thrive in async-first teams and am comfortable spanning from product discovery through production rollout, with a focus on maintainable code, robust testing, and clear documentation. I’m based in Brazil and have extensive experience working remotely with international teams, mentoring colleagues, and delivering rapid value in fast-paced environments. I advocate for accessibility, performance, and security (including HIPAA and ISO 27001 considerations) across projects, and I enjoy turning complex challenges into elegant, reliable solutions.

Available to hire

Hi, I’m Miguel Ángel Muñoz, a Full Stack Engineer who enjoys building scalable web applications, AI-powered workflows, and developer tooling. I’ve led design system initiatives, implemented RAG pipelines for document ingestion, and built cloud-native backends and frontends for multi-client SaaS products. I thrive in async-first teams and am comfortable spanning from product discovery through production rollout, with a focus on maintainable code, robust testing, and clear documentation.

I’m based in Brazil and have extensive experience working remotely with international teams, mentoring colleagues, and delivering rapid value in fast-paced environments. I advocate for accessibility, performance, and security (including HIPAA and ISO 27001 considerations) across projects, and I enjoy turning complex challenges into elegant, reliable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Portuguese

Fluent

Work Experience

Full Stack Engineer & Technical Support at Klaston Management

February 1, 2024 - Present

• Built Conformity frontend (React, Angular, Vite, Bun) using Spec-Driven Development for 10-50+ clients. Implemented RxJS admin dashboard, integrated Laravel backend with elastic infrastructure. • Designed modular Design System (shadcn/ui) for consistent UI/UX and rapid client-specific deployments. • Built Vue.js dashboards: email report system (daisyUI + NestJS) and ISO compliance platform (Go backend). • Managed legacy PHP SaaS (50+ clients) on DigitalOcean/Hostinger. Optimized NGINX for 500+ concurrent users with DevOps best practices. • Led Laravel-to-Go migration using Pocketbase, recreated 100+ endpoints. Built microservices with AI for non-conformity task automation and ISO consulting. • Built RAG pipelines with document ingestion, intelligent chunking, embeddings, vector search (Pinecone). • Implemented AI workflows (Spec-Driven Development, context engineering, RAG) cutting development cycles. • Supported 50+ clients troubleshooting backend/infrastructure/deployment. Led Agile/OKR development cycles. • Produced documentation, videos, and interactive tours (Driver.js) improving onboarding and reducing support requests.

Full Stack Engineer at AlterEstate

May 1, 2022 - January 1, 2024

• Worked on a drag-and-drop page builder used by thousands of SaaS platforms and millions of end users, embedding editors and creative tools into third-party products. • Built backend services in Node.js + TypeScript, exposing REST and GraphQL APIs/SDKs consumed by external developers. • Developed React-based editor components with real-time rendering, undo/redo, versioning, and export functionality. • Implemented AI-powered workflows (auto-layout, content generation, smart suggestions) using OpenAI APIs. • Shipped end-to-end features in an async-first, YC-culture environment with EST overlap. • Improved developer experience by documenting SDKs, writing usage examples, and reducing friction for integrating clients. • Used Docker, CI/CD pipelines, and followed spec-driven development with automated testing.

Full Stack Engineer at Espacio Weiraut

September 1, 2021 - April 1, 2022

• Built company landing page (PHP, Bootstrap) with Cloudflare CDN/WAF. Integrated Google My Business, Facebook Reviews, Technical SEO, and Facebook SDK. • Developed order management system (Go + Vue.js on GCP): real-time seat tracking, order lifecycle, staff coordination. • Created subscription platform (Go + Vue.js): membership tiers, billing automation, access control, member workflows. • Integrated Web3 payments (MetaMask, ETH/USDT/USDC) using ethers.js and go-ethereum for on-chain verification and billing automation.

Full Stack Engineer at Olive AI

May 1, 2020 - August 1, 2021

• Promoted to full stack: owned features across Node.js + TypeScript and Go backend services with React/Vue frontends. • Contributed to Olive Helps (Electron desktop tool) integrating AI outputs into hospital workflows. • Built REST/GraphQL services for workflow automation, eligibility checks, and EHR/EMR integrations. • Worked with backend/AI team to surface ML outputs (claims, eligibility) in UI and APIs. • Scaled claim and eligibility workflows during COVID-19 volume spike. • Implemented HIPAA-compliant data handling, role-based access, and audit logging.

Frontend Developer at Olive AI

June 1, 2018 - April 1, 2020

• Built React + TypeScript dashboards for revenue cycle and claims-verification teams. • Migrated class components to React Hooks; authored custom hooks for shared state. • Contributed to cross-framework design system (Storybook) across React, Vue.js, and Angular. • Shipped virtualized tables, dashboards, and form-heavy clinical workflows. • WCAG 2.1 accessibility and performance work (code-splitting, lazy loading). • Tests with Jest, React Testing Library, and Cypress.

Web Developer at Academias Indetec

October 1, 2016 - June 1, 2018

• Built academy e-learning platform (300+ students) in 3-person team under Agile/OKR delivery. • Integrated Moodle + WordPress + WooCommerce ecosystem (PHP plugins/themes) automating student enrollment and admin tasks. • Developed evaluation tools (React + Python) for robotics/Arduino: student progress tracking, project assessment, course materials. • Built landing pages and payment processing (250+ transactions/month) for robotics initiatives.