David Reyes

Full Stack Developer / AI Engineer

Software Developer with 10 years of experience building scalable web, mobile, and AI-driven applications. Strong background in full-stack development, mobile engineering, and applied AI solutions. Experienced in cloud-based architectures and modern DevOps workflows. Proven ability to solve complex technical problems and deliver production-ready systems in fast-paced environments.

[email protected] +1 (832) 998 8590 Katy, TX

Years experience

Skills

Work Experience

Full Stack AI Engineer

Fulcrum

Aug 2024 — 2026

Architected and developed full-stack applications using React, TypeScript, Node.js, and cloud-native services.
Designed and deployed an AI-powered recommendation engine that increased user engagement by approximately 25%.
Built scalable REST APIs and backend services supporting thousands of daily active users.
Developed cross-platform mobile applications using React Native, reducing development costs and accelerating release cycles by 30%.
Implemented CI/CD pipelines using GitHub Actions and Docker, improving deployment reliability and reducing release time.
Optimized database performance across PostgreSQL and MongoDB environments through indexing and query tuning.
Integrated OpenAI-powered features including intelligent search, content generation, and workflow automation.
Led technical architecture discussions and mentored junior developers on best practices and code quality standards.
Problem-Solving Achievement: The company experienced performance bottlenecks in its AI-driven search platform. Redesigned the inference architecture by introducing Redis caching, asynchronous processing, and optimized model invocation patterns. Reduced average response times from 3.2 seconds to under 800 milliseconds while lowering infrastructure costs.

Full Stack Developer

Orases

Jun 2022 — Jul 2024

Developed responsive web applications using React, JavaScript, and modern frontend frameworks.
Built backend services and API integrations using Node.js and Express.
Collaborated with UX/UI teams to deliver accessible and mobile-friendly user experiences.
Assisted in designing and maintaining cloud-hosted applications deployed on AWS.
Participated in code reviews, testing, and sprint planning activities within Agile teams.
Improved application performance through frontend optimization and backend query tuning.
Contributed to mobile application development and internal productivity tools.
Problem-Solving Achievement: During a major product release, a mobile application experienced frequent crashes under production workloads. Identified inefficient memory consumption caused by oversized API payload processing and helped redesign the data parsing workflow, improving application stability by more than 40%.

Full Stack Developer

Slingshot

Feb 2019 — May 2022

Built modern web applications using React, Angular, and TypeScript.
Developed backend services with Node.js and Python, supporting mission-critical business processes.
Designed RESTful APIs and integrated third-party services including payment, authentication, and analytics platforms.
Created reusable frontend component libraries that accelerated development across multiple projects.
Implemented automated testing strategies and improved application quality through continuous integration practices.
Worked closely with cloud engineering teams to deploy scalable applications on AWS.
Contributed to database design, optimization, and migration initiatives involving PostgreSQL and MongoDB.
Problem-Solving Achievement: A high-traffic customer portal suffered performance degradation during peak usage periods. Analyzed application bottlenecks, introduced API response caching, optimized database queries, and implemented lazy-loading techniques, resulting in a 55% improvement in page load times and significantly higher user satisfaction.

Web Developer

Saritasa

Sep 2016 — Jan 2019

Developed user-facing features using JavaScript, React, HTML5, and CSS3.
Built and maintained backend services with Node.js and PHP-based systems.
Assisted in database design, maintenance, and optimization activities.
Integrated third-party APIs and payment gateways into client applications.
Participated in debugging, testing, and deployment activities.
Worked collaboratively within Agile teams to deliver high-quality software solutions.
Contributed to mobile-responsive interfaces and cross-browser compatibility improvements.
Problem-Solving Achievement: A legacy client application experienced recurring data synchronization issues between frontend and backend systems. Investigated the root cause, redesigned API validation logic, and introduced automated error handling processes, reducing synchronization failures by over 60%.

Skills

React.jsNext.jsAngularVue.jsJavaScript (ES6+)TypeScriptHTML5CSS3SassTailwind CSSBootstrapReduxNode.jsExpress.jsNestJSPython (Django, FastAPI, Flask)React NativeFlutterApp Store & Google Play DeploymentAWSMicrosoft AzureGoogle Cloud PlatformDockerPostgreSQLMySQLMongoDBElasticsearchOpenAI API IntegrationRetrieval-Augmented GenerationLLM Application DevelopmentAI-Powered Search & AutomationAgile/Scrum Methodologies

Education

Bachelor’s Degree, Computer Science

Texas Southern University

2012 — 2016