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I’m a Full Stack Developer with 8+ years of experience building scalable web applications across fintech, healthcare, and AI-driven platforms. I specialize in React, Node.js, Python, and PostgreSQL, and have strong experience deploying and managing systems on AWS and Azure, including AWS GovCloud. I’ve worked on everything from internal tools to customer-facing products, focusing on clean architecture, performance, and secure data handling. Recently, I’ve also been building AI-powered features like document processing and RAG-based search systems. What sets me apart is my ability to quickly understand complex requirements, debug tough issues, and deliver practical solutions that work in real-world environments.…I’m a Full Stack Developer with 8+ years of experience building scalable web applications across fintech, healthcare, and AI-driven platforms. I specialize in React, Node.js, Python, and PostgreSQL, and have strong experience deploying and managing systems on AWS and Azure, including AWS GovCloud. I’ve worked on everything from internal tools to customer-facing products, focusing on clean architecture, performance, and secure data handling. Recently, I’ve also been building AI-powered features like document processing and RAG-based search systems. What sets me apart is my ability to quickly understand complex requirements, debug tough issues, and deliver practical solutions that work in real-world environments.

Manuel Longoria

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

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I’m a Full Stack Developer with 8+ years of experience building scalable web applications across fintech, healthcare, and AI-driven platforms. I specialize in React, Node.js, Python, and PostgreSQL, and have strong experience deploying and managing systems on AWS and Azure, including AWS GovCloud. I’ve worked on everything from internal tools to customer-facing products, focusing on clean architecture, performance, and secure data handling. Recently, I’ve also been building AI-powered features like document processing and RAG-based search systems. What sets me apart is my ability to quickly understand complex requirements, debug tough issues, and deliver practical solutions that work in real-world environments.…I’m a Full Stack Developer with 8+ years of experience building scalable web applications across fintech, healthcare, and AI-driven platforms. I specialize in React, Node.js, Python, and PostgreSQL, and have strong experience deploying and managing systems on AWS and Azure, including AWS GovCloud. I’ve worked on everything from internal tools to customer-facing products, focusing on clean architecture, performance, and secure data handling. Recently, I’ve also been building AI-powered features like document processing and RAG-based search systems. What sets me apart is my ability to quickly understand complex requirements, debug tough issues, and deliver practical solutions that work in real-world environments.

Available to hire

I’m a Full Stack Developer with 8+ years of experience building scalable web applications across fintech, healthcare, and AI-driven platforms. I specialize in React, Node.js, Python, and PostgreSQL, and have strong experience deploying and managing systems on AWS and Azure, including AWS GovCloud.
I’ve worked on everything from internal tools to customer-facing products, focusing on clean architecture, performance, and secure data handling. Recently, I’ve also been building AI-powered features like document processing and RAG-based search systems.
What sets me apart is my ability to quickly understand complex requirements, debug tough issues, and deliver practical solutions that work in real-world environments.

Skills

Experience Level

Expert

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Expert

Language

English

Fluent

Work Experience

Senior Software Engineer at Grammarly

June 1, 2025 - Present

Architected a Dual-Engine Orchestration Layer in Go using an actor-model pattern and goroutines to manage 100k+ concurrent WebSocket connections while offloading LLM reasoning to Python (FastAPI) sidecars via high-performance gRPC to bypass GIL limitations. Led a Task Graph Executor in Go for multi-app workflows (Slack, Jira, Salesforce) as DAGs enabling parallel API fetches and reducing end-to-end latency by 35%. Built a Python-based asynchronous embedding pipeline with FastAPI and Celery to process user interactions into a PostgreSQL (pgvector) store with NSW indexing. Implemented a custom Semantic Caching Layer in Go that intercepts repetitive LLM prompts and shares cached vectors, reducing third-party API token costs by 22%. Optimized a high-throughput Java telemetry pipeline using Project Loom to ingest 100B daily events and ensure real-time synchronization. Built a Go-based API Gateway with Hystrix-pattern circuit breakers for automated failover to local, on-prem models during th

Senior Software Engineer at Radix Web

April 1, 2024 - May 1, 2025

Architected a production-ready AI SaaS starter from scratch, designing a high-concurrency FastAPI + PostgreSQL backend, backend for event-driven pipelines; integrated with 100+ Enterprise SaaS tools via DAG-based orchestration, enabling parallel fetches and reduced latency. Built a centralized AI Orchestration service with FastAPI, Celery, and Redis, deployed across multi-region AWS infrastructure with CI/CD automation. Implemented secure data pipelines, Prometheus/Grafana/Sentry monitoring, and Terraform-based multi-region deployments. Demonstrated 99.9% uptime and scalable architecture for AI-powered SaaS features.

Software Engineer at Honor

September 1, 2020 - August 1, 2022

Led backend/frontend migration to a high-availability stack; standardized React/TypeScript UI and built a shared component library; modernized state management with Redux and React-Saga; improved front-end maintainability and delivery velocity; mentored 4+ developers and aligned tech roadmaps with product and compliance teams.

Software Engineer at General Motors

January 1, 2018 - July 1, 2020

Spearheaded the frontend architectural migration of GM's mission-critical internal portals, refactoring legacy JavaScript into a modular React/TypeScript ecosystem to improve maintainability and type safety. Engineered a standardized UI component library using React and Styled-Components, unifying the user experience across global fleet-management applications. Modernized enterprise state management by migrating fragmented logic to a centralized Redux and React-Saga framework, enabling more reliable data flow. Migrated to a microservices architecture and contributed to Go-based services; mentored 4+ developers. Implemented robust data flows and backend integration across Java Spring Boot services to support scalable features.