Open to opportunities

Elijah Nevel

@elijahnevel

Message

I am a Senior Full-Stack and LLM Engineer specializing in scalable SaaS and AI-driven platforms.

United States

Message

What I'm looking for

I am seeking a senior full-stack/LLM engineering role where I can lead end-to-end delivery of AI-driven SaaS, own cloud-native architecture, mentor engineers, and improve automation and customer outcomes in an Agile team.

I am a Senior Full-Stack and LLM Engineer with 10+ years building enterprise-scale SaaS, FinTech, and AI-driven platforms. I focus on end-to-end delivery, performance optimization, and pragmatic, maintainable architectures.

I have designed and deployed LLM-enabled products using OpenAI, LangChain, and Pinecone, implementing RAG pipelines that reduced manual lookup time by 95% and improved customer support automation by 40%. I build scalable backends with Java Spring Boot and responsive frontends with React/Next.js, and I optimize deployments on AWS and CI/CD pipelines.

I enjoy leading cross-functional teams in Agile environments, creating reusable components and documentation, and driving measurable improvements in development velocity and user experience. I aim to deliver reliable, production-ready systems that accelerate business outcomes.

Experience

Work history, roles, and key accomplishments

Current

Senior LLM / Full-Stack Engineer

Current

Samsung Research America

Jan 2023 - Present (2 years 7 months)

Built an analytics dashboard to visualize telemetry from 100K+ endpoints and developed scalable Spring Boot APIs with optimized caching and security. Designed and deployed an LLM-enabled RAG knowledge retrieval system using OpenAI, LangChain, and Pinecone that reduced manual lookup time by 95% and improved customer support automation by 40%.

React Express HighCharts Spring Boot Lang Chain Pinecone RAG RESTful APIs Microservices

Senior Full-Stack Engineer

Twitter

Jul 2021 - Dec 2022 (1 year 5 months)

Led development of marketing web applications using React and TypeScript, building reusable components with Storybook to ensure UI consistency. Integrated Contentful as a headless CMS, reducing content update time by 40% and improving development velocity by 30%.

React TypeScript Storybook Contentful Component Libraries Frontend Development Agile CI CD

Senior Full-Stack Engineer

Teampay

Jul 2019 - Jun 2021 (1 year 11 months)

Migrated the core frontend from JavaScript to TypeScript to reduce runtime errors and improve maintainability while building scalable UI components. Developed a GraphQL server with Apollo to reduce API overfetching by 40% and implemented Jest/Cypress tests achieving over 90% test coverage.

TypeScript React Material UI GraphQL Jest Cypress CI CD

Part-time Consultant

phData

Apr 2019 - Jun 2021 (2 years 2 months)

Developed internal developer tools using Spring Boot, Antlr, and React for SQL parsing and built Traverse, a graph-based Snowflake security visualization platform. Rebuilt AngularJS apps to React+TypeScript improving performance and maintainability by 60%, and enhanced data ingestion pipelines integrating S3, Snowflake, and Kafka.

Spring Boot Antlr React TypeScript Snowflake Kafka AWS S3

Senior Software Engineer

Asana

Jul 2016 - Jun 2019 (2 years 11 months)

Migrated the core web app to a React/Next.js frontend with a Spring Boot microservices backend to improve scalability and deployment efficiency. Implemented interactive D3.js visualizations and performance optimizations that reduced Time to Interactive (TTI) by 38% and improved Core Web Vitals.

React Next.js Spring Boot D3.Js WebSockets Performance Optimization Accessibility

Senior Software Engineer

Airbnb

Jul 2013 - Jun 2016 (2 years 11 months)

Delivered React-based front-end features and admin tooling and developed Java backend services for claims and financial workflows. Mentored junior engineers and supported full-stack deliverables to improve team delivery.

React Java Backend Services Mentoring Full Stack RESTful APIs

Engineering Intern

Facebook

Apr 2012 - Jun 2013 (1 year 2 months)

Assisted the frontend engineering team in building Facebook app features and contributed to large-scale React architecture and best practices. Gained experience in scalable frontend development and cross-team collaboration.

Frontend Development React JavaScript Collaboration

Education

Degrees, certifications, and relevant coursework

National Taiwan University

Bachelor of Science, Computer Science

2008 - 2012

Completed a Bachelor of Science in Computer Science at National Taiwan University from September 2008 to March 2012, focusing on algorithms, systems, and software engineering.