Open to opportunities

Tomas Ramirez

@tomasramirez

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Full-stack engineer building real-time AI-powered web apps with React and Python.

Argentina

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What I'm looking for

I’m looking to lead end-to-end development of scalable, real-time web platforms—combining React/TypeScript, FastAPI/Python, and AI/CV—while owning architecture, performance, and SOC2-aligned security in a collaborative team.

I’m a Full-Stack Engineer with 10+ years of experience building scalable, real-time web applications and AI-powered platforms. I combine React and TypeScript for complex, data-driven UIs with Python backends (FastAPI, Flask) designed for high-performance systems.

I architect and deliver end-to-end products: WebSocket-driven real-time dashboards, MongoDB schema/design and performance tuning, and Redis caching with pub/sub and task queues to reduce latency. I also integrate AI/ML pipelines using ONNX Runtime, OpenCV, and gRPC, and deploy secure containerized applications with Docker and Nginx—implementing JWT, OAuth, RBAC, and audit logging aligned with SOC 2 practices.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Engineer

Cognizant

May 2024 - Dec 2025 (1 year 7 months)

Architected and delivered React (TypeScript) and Python (FastAPI/Flask) full-stack applications for real-time, data-intensive systems, including WebSocket-driven dashboards and streaming visualization. Designed MongoDB and Redis solutions to improve query performance and reduce API latency, and integrated ONNX/OpenCV/gRPC AI pipelines before deploying secure Docker/Nginx services with JWT/OAuth/RB

React TypeScript fastAPI Flask WebSockets MongoDB Redis Docker Nginx ONNX Runtime

Full-Stack Developer

Huenei IT Services

Jun 2021 - Apr 2024 (2 years 10 months)

Developed scalable React (TypeScript) web applications with modular architecture and implemented backend services using FastAPI and Flask for RESTful and async APIs. Built WebSocket real-time updates, optimized MongoDB models and queries for high-volume workloads, and used Redis for caching/session and background processing, including OpenCV/ONNX integrations for automation features.

React TypeScript fastAPI Flask WebSockets MongoDB Redis OpenCV ONNX Runtime Chart.Js

Backend / Full-Stack Engineer

AllianceTec Inc.

Aug 2019 - May 2021 (1 year 9 months)

Built backend systems with Python (FastAPI/Flask) to support API-driven, distributed workflows, including RESTful and asynchronous APIs. Designed MongoDB schemas and optimized queries, implemented Redis caching with async job processing, developed WebSocket event-driven features, and integrated gRPC (Protobuf) for efficient inter-service communication.

Python fastAPI Flask REST APIs MongoDB Redis WebSockets gRPC Protobuf Docker

Software Engineer

HR Actowiz Solutions

Oct 2018 - Jul 2019 (9 months)

Developed React-based frontend interfaces and Python backend services, building REST APIs and integrating external data sources. Supported data processing and performance optimization workflows through ongoing development, debugging, and improvements.

React Python REST APIs API Integration Data Processing Performance Optimization Backend Integrations Debugging Software Development

Software Engineering Intern

Google

Nov 2017 - Oct 2018 (11 months)

Supported backend systems for scalable applications and contributed to testing, debugging, and performance optimization efforts. Collaborated on engineering tasks to improve reliability and application performance.

Backend Development Software Testing Debugging Performance Optimization Scalability Engineering Support