Jayraj Sharma

Full-stack Engineer

Houston, TX, US

AWS

Storybook

Prototyping

Wireframing

Terraform

REST

Docker

GraphQL

Node.js

Next.js

User Research

PostgreSQL

Tailwind CSS

Figma

Technical Writing

React

TypeScript

Client Communication

Redis

Design Systems

Available for hire fromNegotiable

Full Stack Engineer | UI/UX Designer | AI Integration Specialist (10 Years)

Versatile freelance engineer and designer with 10 years of experience delivering end-to-end digital products for startups, agencies, and enterprise clients. I bridge strategy, design, and engineering — building polished UIs, scalable back-end systems, and AI-powered features that ship on time and drive measurable impact. Available for contract, project-based, and retainer engagements.

Projects

AI Research Assistant — Chrome Extension

▸ Built and shipped a Chrome extension that lets users highlight any text on any webpage and instantly query Claude for plain-English explanations, concise summaries, counterarguments, or related research — grew to 1,400+ active weekly users organically with zero paid acquisition. ▸ Architected the full stack independently: TypeScript extension with a context-aware selection API, FastAPI back-end with server-sent event streaming for real-time responses, token-bucket rate limiting, and a polished Figma-designed popup UI with dark mode support.See More

DesignSprint.ai — AI-Powered UX Tool

▸ Conceived, designed, and engineered a web app that transforms a raw product brief into a complete UX research kit — AI-generated user personas, empathy maps, journey diagrams, and usability heuristics — using GPT-4 with structured JSON outputs and post-processing logic. ▸ Launched on Product Hunt, hit #3 Product of the Day, and converted 300 paying subscribers within 6 weeks with a self-serve Stripe checkout, usage-based billing, and a fully serverless back-end on Vercel + AWS Lambda.See More

Work History

Lead Full Stack Engineer + AI Architect (Contract)

FinFlow (Fintech Startup)Dec 2023 - Feb 2026 • 2 yrs 3 mos▸ Architected a production-grade AI cash-flow forecasting engine using GPT-4o + RAG over 3 years of transaction history; eliminated 60% of manual FP&A effort and surfaced anomalies 5x faster than the legacy spreadsheet workflow. ▸ Owned the entire product lifecycle solo — from Figma wireframes and design-system tokens through Next.js 14 front-end, FastAPI micro-services, PostgreSQL schemas, Redis caching layers, and zero-downtime AWS ECS deployment. ▸ Designed a fully accessible, token-based design system in Figma and built it in React with Storybook documentation; adopted by 3 product lines and 7 engineers within the first month of release, cutting UI inconsistencies by 80%. ▸ Delivered a complex 14-week build 2 weeks early with zero critical post-launch bugs, earning a contract renewal and a direct referral to two additional clients. Stack: Next.js · FastAPI · OpenAI · Pinecone · PostgreSQL · AWS · Figma

UI/UX Designer + Frontend Engineer (Contract)

Meridian HealthDec 2021 - Dec 2022 • 1 yr 1 mo▸ Spearheaded a full UX overhaul of a patient-portal SaaS serving 80,000+ users — boosted task-completion rate by 34%, cut average session time-on-task by 28%, and reduced inbound support tickets by 22% within 90 days of launch. ▸ Ran 20+ moderated user interviews, synthesized findings into affinity maps and journey diagrams, and produced three iterative rounds of high-fidelity Figma prototypes — each validated through unmoderated usability testing before a single line of code was written. ▸ Translated approved designs into a fully responsive, component-driven React front-end integrated with a Django REST API; enforced WCAG 2.2 AA compliance with automated axe-core audits in CI, achieving a 100% accessibility pass rate at launch. Stack: Figma · React · TypeScript · Django · Tailwind CSS

AI Integration Specialist (Contract)

RetailOS (E-commerce SaaS)Jan 2022 - Mar 2022 • 3 mos▸ Engineered an AI product-description generator using OpenAI GPT-3.5 + LangChain with structured output validation; processed 10,000+ SKUs on day one, saving the client $40k/year in copywriting costs and reducing time-to-publish per product from 45 minutes to under 90 seconds. ▸ Replaced a keyword-only search bar with a full semantic search experience powered by Weaviate embeddings and a conversational query UI — click-through rate on search results improved by 41% in the first 30 days. Stack: OpenAI GPT-3.5 · LangChain · Weaviate · Next.js · Node.js

Senior Full Stack Developer (Contract)

Orbit AgencyJan 2020 - Jan 2022 • 2 yrs 1 mo▸ Sole contributor on 12+ concurrent client engagements spanning SaaS dashboards, marketing sites, e-commerce storefronts, and internal ops tools — consistently hitting deadlines and maintaining a 5-star client rating across all projects. ▸ Ran full discovery-to-launch cycles independently: stakeholder interviews, information architecture, low-fi wireframes, interactive Figma prototypes, front-end build, back-end APIs, and post-launch iteration — with no handoff gaps. ▸ Built a proprietary project scaffold and shared component library that cut estimated setup time per new engagement from 3 -- 1 of 2 -- days to 4 hours, enabling a 25% increase in throughput without adding contractors. Stack: React · Vue · Node.js · PostgreSQL · AWS · Figma

Full Stack Engineer (Full-time → Contract)

BuildRight (PropTech)Dec 2018 - Dec 2020 • 2 yrs 1 mo▸ Served as a core engineer on a permit-tracking platform scaling to 200+ municipalities and 50,000+ daily active users; designed and shipped a Mapbox-powered interactive map search, configurable reporting dashboards, and a suite of third-party REST API integrations with city data systems. ▸ Championed and executed a full front-end TypeScript migration across 60,000+ lines of JavaScript; established strict type coverage policies that reduced runtime exceptions by ~30% and cut QA cycle time by two days per sprint. ▸ Architected and led a 6-month phased migration from a Rails monolith to Node.js microservices on AWS EKS — delivered with zero downtime and a 40% reduction in average API response time. Stack: React · TypeScript · Node.js · PostgreSQL · AWS · Mapbox

Junior Full Stack Developer (Full-time)

Clearwater LabsDec 2015 - Dec 2018 • 3 yrs 1 mo▸ Engineered interactive data-visualization dashboards using D3.js to surface KPIs for enterprise B2B clients; replaced static weekly Excel exports with live, filterable charts — reducing time-to-insight for account managers from days to seconds. ▸ Built and launched user-management flows (roles, permissions, audit logs, SSO) and an automated scheduled-report export system that handled 500+ report deliveries per day with 99.9% delivery reliability. ▸ Partnered directly with the design team to translate Sketch mocks into pixel-perfect, fully responsive UIs; established a front-end style guide that reduced design-to-dev handoff friction and became the team standard for the next 3 years. Stack: React · D3.js · Python/Flask · MySQL

Education

University of Houston

B.S., Computer Science2015

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