Open to opportunities

Robert Lopez

@robertlopez

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Senior full‑stack engineer specializing in React, Node.js, and production AI/LLM integrations.

United States

Message

What I'm looking for

I’m looking for senior full‑stack roles building production web and AI‑enabled features, working with cross‑functional teams, mentoring engineers, and delivering measurable business impact.

I am a senior full‑stack engineer with over ten years building scalable web and mobile systems, from internal tools to large production platforms. I focus on pragmatic, maintainable code that delivers measurable business and user impact.

I architect and implement end‑to‑end solutions using React/Next.js frontends and Node.js/NestJS backends, with expertise in GraphQL, REST, microservices, serverless architectures, databases, and CI/CD. I’ve led AI/LLM integrations—RAG pipelines, embeddings, function calling, and guardrails—to improve automation and user experiences.

I enjoy mentoring engineers, collaborating with product teams, and applying strong testing and accessibility practices to ship reliable software. I prioritize clear communication, practical design, and measurable results in production.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Apex Systems

Apr 2019 - Present (6 years 10 months)

Built scalable React/Next.js frontends and Node.js/NestJS backends, delivering GraphQL and REST APIs, serverless event-driven systems, and RAG/LLM features that improved developer productivity and production automation.

React Next.js TypeScript NestJS GraphQL Node AWS Lambda PostgreSQL Pgvector OpenAI

Senior Software Engineer

UEAT

Aug 2017 - Mar 2019 (1 year 7 months)

Developed React/React Native frontends and Node.js/Express backends for a restaurant ordering platform, implementing real-time features, serverless pipelines, and ML/LLM-assisted tools to improve ordering reliability and discovery.

React Native Next.js Node Express MongoDB Redis Socket.IO AWS Lambda Stripe

Full Stack Engineer

Canva

Aug 2013 - Mar 2017 (3 years 7 months)

Built interactive web features and backend services, adding real-time collaboration, file upload/processing with S3, and early Node.js APIs to support scalable design workflows and cross-platform experiences.

AngularJS React Native Node Express MongoDB Socket.IO AWS S3 Webpack Jasmine

Junior Developer

Ciena

Jun 2012 - Jun 2013 (1 year)

Developed internal web tools using HTML5, CSS3, and JavaScript, built interactive visualizations and small Node.js data-processing scripts to support network operations dashboards.

HTML5 CSS3 JavaScript jQuery JavaScript (Node.Js Data Visualization SVN Git

Education

Degrees, certifications, and relevant coursework

Illinois Institute of Technology

Bachelor of Computer Science, Computer Science

Grade: 3.5/4.0

Completed a Bachelor of Computer Science with a cumulative GPA of 3.5/4.0, focusing on software development fundamentals and practical engineering skills.