RezwanSheikh

Full-Stack Software Engineer

Building secure and scalable applications with Next.js, React Native, Node, and TypeScript.

Featured Projects

A selection of projects showcasing full-stack development, AI integration, and scalable product design.

DriveLeads

Built a multi-tenant lead management platform for salespeople with secure row-level access controls. Designed an automated lead intake pipeline with source tracking, validation, and status workflows. Implemented real-time performance analytics including lead volume, weekly/monthly trends, and source-based insights to optimize sales funnels.

Next.jsReactTailwind CSS+3 more

Horizon

Developed a financial web application using Plaid for bank account linking and Dwolla for secure fund transfers. Implemented real-time error tracking with Sentry, reducing error resolution time by 50%.

ReactNext.jsTailwindCSS+4 more

LLM Knowledge Assistant

Built an LLM-powered knowledge assistant with context-aware responses, cutting latency by 40% and scaling to 10K+ queries/day. Developed a React Native mobile app with Firebase Authentication supporting 500+ concurrent users.

React NativeFirebaseTypeScript+3 more

ReceiptRanger

Built an expense management platform with bank integration and both manual and rule-based receipt verification. Implemented RBAC for admins, managers, and employees, enabling transaction approval workflows. Enhanced user onboarding with AWS SES automation, improving completion by 40%.

ReactExpressSupabase+2 more

DevOverflow

Developed a Q&A application for coding questions with a recommendation system based on user interactions. Added real-time voting, pagination, filtering, and search features, reducing search times by 50%. Created MongoDB indexes improving query performance by 40%.

Next.jsMongoDBMongoose+2 more

Goodeats

Created a restaurant app with menu search, filtering, seamless checkout, and admin panel for order management. Reduced image load time by 45% through Cloudinary optimization. Streamlined Stripe webhook processing, decreasing payment processing times by 25%.

Node.jsExpressMongoDB+3 more

Technical Skills

A comprehensive toolkit for building modern, scalable, and performant applications.

Languages

JavaScriptTypeScriptPythonJavaHTMLCSS

Frontend

ReactNext.jsReact NativeTailwindCSS

Backend

Node.jsExpressNest.jsMongoDBPostgreSQLFirebase

Cloud & DevOps

AWS EC2AWS RDSAWS LambdaAWS S3DockerGitHub

AI / ML

RAGLLM Fine-TuningLoRA/QLoRALangChainPineconePrompt Engineering

Tools & Platforms

SupabaseAppwriteSentryPostmanJiraVS CodeOpenAIHugging Face

Experience

Building impactful solutions across different domains and technologies.

Software Engineer

Momen Technologies

May 2025 - Present
Orlando, FL (Remote)

Building AI-powered mobile and web applications with React Native, Firebase, and LLM integrations.

Built an LLM-powered knowledge assistant with context-aware responses, cutting latency by 40% and scaling to 10K+ queries/day
Developed a React Native mobile app with Firebase Authentication, reducing login time by 30% and supporting 500+ concurrent users
Implemented a real-time AI chat interface with smooth animations and persistent sessions, enabling sub-200ms response times
React NativeFirebaseLLMTypeScriptNestJS

Software Engineer

Momen Technologies

Feb 2025 - May 2025
Orlando, FL (Remote)

Developed and deployed AI systems with LLM fine-tuning, RAG pipelines, and scalable backend infrastructure.

Fine-tuned DeepSeek-Chat 7B with LoRA, improving response relevance by 30% and reducing memory and training time by 40%
Built a RAG pipeline with LangChain, MongoDB, and Pinecone, boosting factual accuracy by 20% and reducing hallucinations
Deployed a scalable NestJS backend on AWS EC2, reducing API response times by 35% through optimized load balancing and efficient request handling
NestJSLangChainMongoDBPineconeAWS EC2LoRA

Software Engineering Intern

NEW EIC

Dec 2024 - Mar 2025
Boston, MA (Remote)

Architected enterprise management platforms with cloud storage, RBAC, and real-time collaboration features.

Built a scalable interview management platform with cloud storage using MongoDB and AWS S3, achieving 3x faster retrieval and 70% lower storage usage
Architected a strategy management system with RBAC, real-time collaboration, and approval workflows, reducing approval time by 40%
MongoDBAWS S3Node.jsTypeScript

Software Engineering Intern

Institute for Machine Learning

Sep 2024 - Dec 2024
Queens, NY

Built cloud infrastructure and time series models for real-time financial analytics on AWS.

Developed AWS infrastructure (EC2, RDS, Lambda) to improve scalability and system performance
Increased scalability by 40% and reduced data processing time by 25% through cloud infrastructure optimizations
Built time series models in Java, integrated econometric modules, and deployed real-time financial analytics
JavaAWS EC2AWS RDSAWS LambdaPython

About Me

Passionate about building great software and solving complex problems.

Building Software, Solving Problems

I'm a Computer Science student at St. John's University (GPA: 3.6/4.0, Expected Dec 2026) with a passion for creating elegant solutions to complex problems. My journey in software engineering has been driven by curiosity and a desire to build products that make a real impact.

Currently, I'm working at Momen Technologies as a Software Engineer, where I'm fine-tuning LLMs with LoRA, implementing RAG systems with LangChain and Pinecone, and building scalable cross-platform applications with React Native and Firebase that serve 500+ concurrent users.

I'm AWS Certified Solutions Architect - Associate (Feb 2025) with expertise in AI/ML, full-stack development, and cloud infrastructure. My experience spans building secure authentication systems, real-time features, API integrations, and deploying scalable backends on AWS.

Product-Minded Engineer

I don't just write code—I build solutions that solve real problems and create value for users.

Innovation Focused

Constantly exploring new technologies and approaches to build better, more efficient systems.

Fast Execution

Shipping quality products quickly with modern tools like Next.js, NestJS, and cloud infrastructure.

User-Centered

Every technical decision is made with the end user in mind, ensuring the best possible experience.

Get In Touch

Whether you have a question or just want to say hi, feel free to reach out!

© 2025 Rezwan Sheikh. Built with Next.js, Tailwind CSS, and Framer Motion.