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I’m a full-stack software engineer with experience building and maintaining large-scale, production systems. I’ve worked on end-to-end web and mobile features at Meta, focusing on authentication, identity, and reliability for high-traffic applications. I enjoy working across the stack, picking up new technologies quickly, and improving existing systems through thoughtful design, testing, and collaboration.…I’m a full-stack software engineer with experience building and maintaining large-scale, production systems. I’ve worked on end-to-end web and mobile features at Meta, focusing on authentication, identity, and reliability for high-traffic applications. I enjoy working across the stack, picking up new technologies quickly, and improving existing systems through thoughtful design, testing, and collaboration.

Nelson Reina

Full Stack Developer, Web Developer, Programmer, +2

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I’m a full-stack software engineer with experience building and maintaining large-scale, production systems. I’ve worked on end-to-end web and mobile features at Meta, focusing on authentication, identity, and reliability for high-traffic applications. I enjoy working across the stack, picking up new technologies quickly, and improving existing systems through thoughtful design, testing, and collaboration.…I’m a full-stack software engineer with experience building and maintaining large-scale, production systems. I’ve worked on end-to-end web and mobile features at Meta, focusing on authentication, identity, and reliability for high-traffic applications. I enjoy working across the stack, picking up new technologies quickly, and improving existing systems through thoughtful design, testing, and collaboration.

Available to hire

I’m a full-stack software engineer with experience building and maintaining large-scale, production systems. I’ve worked on end-to-end web and mobile features at Meta, focusing on authentication, identity, and reliability for high-traffic applications. I enjoy working across the stack, picking up new technologies quickly, and improving existing systems through thoughtful design, testing, and collaboration.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Spanish; Castilian

Intermediate

Work Experience

Full Stack Developer at Meta Platforms, Inc

June 1, 2022 - February 1, 2025

Led end-to-end authentication flows for Meta accounts across web and mobile using OpenID Connect and OAuth 2.0, delivering secure and scalable identity management. Architected full-stack integration of Facebook and Instagram as federated identity providers, and migrated the Meta Horizon identity workflow from a React Native WebView-based flow to a native UI with Bloks for improved performance and user experience. Built and maintained unit tests, end-to-end tests, monitoring dashboards, and alerts to ensure reliability. Served as on-call engineer for high-priority production issues related to authentication, token handling, rate limits, and third-party disruptions. Acted as Better Engineering Lead, guiding quarterly planning and roadmaps to improve code quality, documentation, resilience, and velocity. Partnered with privacy teams as Privacy Oracle to audit workflows and shape privacy and security strategies.

Full Stack Developer at Lighthouse Central Florida

September 1, 2021 - April 1, 2022

Collaborated on a senior project to build immersive Unity-based Virtual Reality experiences that educate users on real-life challenges faced by individuals with visual impairments. Contributed to core system integration and interactive VR components using C#, delivering a functional and accessible simulation.

Full Stack Developer Internship at Meta Platforms, Inc

May 1, 2021 - August 1, 2021

Contributed to the Facebook Lite app by developing key community group features, including membership request workflows and admin approval tools. Designed and implemented a dynamic membership questionnaire system enabling admins to create, edit, and review questions to efficiently screen new member requests.