Vetted Full-Stack Development Professionals

Antonio Walker

Screened

Senior Technical Lead and Full-Stack Engineer specializing in cloud, AI, and enterprise platforms

Irvine, CA13y exp

“Engineering leader and player-coach who says he joined Freeing Returns during a transition from sales-led services to SaaS, architected the platform from the ground up, and helped hire a 10+ person team across engineering, product, and delivery. He also describes leading an AI-based fraud detection system on Salesforce with data lake and pipeline architecture, combining startup build-from-scratch execution with hands-on technical leadership.”

“Software developer with 5+ years of experience building a TypeScript/Angular/Ionic proof-of-delivery application for food logistics, used daily by 500+ drivers. Stands out for solving real-world field constraints like offline sync, device-based licensing, signature capture, and cross-hardware scanner/printer integration across Zebra, Honeywell, and Socket Mobile devices.”

“Software engineering intern who built and deployed a full-stack telemedicine platform (React/Node/MongoDB) used daily in a pediatric clinic, incorporating PyTorch-based predictive features. Demonstrated strong customer-facing iteration and production performance debugging—resolved a live slowdown by indexing/optimizing MongoDB queries and adding caching, improving response times by ~50%.”

Prince Kumar

Screened

Senior Software Engineer specializing in front-end and full-stack web applications

Gurugram, India6y exp

“Started in a small startup environment and grew from frontend into full-stack ownership across mobile apps, web apps, APIs, backend, and production responsibilities. Strongest in JavaScript/TypeScript and React, with notable experience building an insurance "resume the journey" feature using MongoDB to persist multi-step form progress.”

Alan Atrach

Screened

Junior Full-Stack Software Engineer specializing in SaaS web applications

Belleville, NJ5y exp

“Frontend-focused engineer who built core UI patterns for Poseidon, a construction operations platform covering bidding, dispatch, invoicing, inspections, and management. Stands out for combining product-minded UX decisions with deep browser performance work and strong TypeScript architecture, including reusable table systems, state-driven flows, and shared validation across a monorepo.”

“Frontend engineer in fintech who led a client onboarding platform end-to-end, building a scalable React/TypeScript architecture with Redux-driven multi-step verification workflows. Strong focus on quality at scale through UI automation/E2E testing and CI/CD (GitHub Actions + Docker), enabling faster releases (bi-weekly to daily) while staying stable despite evolving backend APIs.”

“Product-minded full-stack engineer with hospitality tech experience who owned and scaled a multi-region guest verification/check-in workflow (ID/passport scanning, OCR, and government submissions) and built internal tools that cut manual entry up to 80%. Also built a React/TypeScript + FastAPI RAG “second brain” with async ingestion workers and an event-driven e-folio email microservice hardened with idempotency and retries.”

“F2P mobile LiveOps/product specialist (iOS) who acted as a bridge between product, design, and data during the live phase—analyzing player behavior, identifying loop friction, and iterating on progression, rewards, and live events. Emphasizes trust-preserving monetization through incremental cohort rollouts and tight monitoring of retention, funnel, revenue, and player feedback signals.”

“Software engineering capstone contributor who helped kickstart an ambiguous, real-client project ("The Virtual Cowboy") by designing the initial relational database and CRUD foundation, then prioritized and shipped simulation/event functionality that satisfied the client. Also building a personal full-stack Book Notes web app (Node/Express/Postgres) with Google OAuth via Passport and a books API ingestion flow focused on data quality and reliability; has deployment experience with Heroku and PythonAnywhere and is ramping up on AWS.”

Swapnil Sanjay Pawar

Screened

Junior Full-Stack Software Engineer specializing in GenAI and web platforms

Atlanta, GA2y exp

“AI/software engineer with hands-on experience deploying an LLM-powered quiz generation platform for students, integrating Python services with Gemini APIs plus frontend and database components. Emphasizes production-grade reliability through observability, schema validation, async processing, and performance tuning under high concurrency, and has collaborated with product/operators (e.g., at Colombo AI) to translate real-world constraints into scalable technical solutions.”

David Momoh

Screened

Senior Full-Stack Engineer specializing in web, mobile, and cloud platforms

Lagos, Nigeria6y exp

“Frontend engineer/lead who has shipped multiple production applications including VentureRamp (multi-platform crowdfunding app, deployed early 2024), DataPotter (large-scale stakeholder tracking dashboard), and Nasdmobile (OTC stock trading app). Emphasizes scalable microfrontend/modular architecture, strong state management (React + TypeScript + Redux Toolkit), and disciplined release practices (feature flags, phased rollouts, monitoring) while leading teams through sprints and knowledge-sharing.”

Joel Zangue

Screened

Senior Full-Stack & Mobile Engineer specializing in React and React Native

Canada6y exp

“Frontend engineer/team lead currently overseeing a 5-person team building an AI trading mobile application, using modular architecture and Jest-based testing to maintain quality as features scale. Also develops a trading/research platform in Next.js/React/TypeScript with Tailwind and Redux, including complex broker registration workflows and experience separating on-device AI components from core business logic.”

“Built and productionized an AI-assisted merchant onboarding automation workflow for Kort Payments, replacing slow manual underwriting document review with structured extraction, cross-document validation, and human-in-the-loop guardrails. Emphasizes reliability via scenario-based testing, repeatability checks, and deep observability (timestamped logs), plus incremental rollout with legacy fallback to prevent regressions.”

Thota Rajkumar

Screened

Junior Cloud & AI Infrastructure Engineer specializing in Agentic AI and AWS

San Jose, CA2y exp

“Built and deployed a production AI career-advice agent designed to combat unreliable/generic LLM guidance by grounding outputs in retrieval-first RAG over resumes/job/hiring data, with multi-step reasoning, structured memory, and evidence-only prompting to reduce hallucinations. Implemented the system with LangChain/Python and deployed on AWS as scalable microservices orchestrated via REST and asynchronous calls, iterating closely with career coaches and students.”

“AI/ML engineer with hands-on experience owning production deployments from discovery through post-launch stabilization, including real-time computer vision/OCR systems and LLM-powered RAG workflows. Stands out for translating messy customer workflows into reliable backend services, debugging non-deterministic retrieval issues, and hardening AI systems with validation, monitoring, and human-review fallbacks.”

“Led a government smart city deployment where success depended less on pure engineering and more on navigating policy, budget, and operational constraints. Built phased, cost-conscious systems combining data pipelines, on-prem AI, OCR, and human-in-the-loop workflows to deliver stable production outcomes and make ambiguous real-world data more controllable at scale.”

“Full-stack engineer who built WordCon, an AI-powered vocabulary learning platform, end-to-end across React/Next.js, Python, AWS, and GenAI services. Particularly strong at turning ambiguous AI product ideas into structured, scalable systems by combining deterministic learning logic with LLM-powered personalization, and has additional experience modernizing legacy PHP systems into React/Node architectures.”

“Full-stack product engineer with experience spanning supply chain, healthcare, and AI-powered consumer products. Built a visual procurement workflow automation engine that reduced approval cycles from days to hours and eliminated compliance boundary errors, and also developed KindleAI, a context-aware e-reader using RAG, Qdrant, and voice interaction.”

“Master's student who built and owned a recruiter-focused full-stack dashboard with real-time updates, large candidate datasets, and performance-sensitive React UI workflows. Stands out for practical front-end optimization work using Chrome DevTools, CSS/rendering fixes, and TypeScript to improve speed, usability, and maintainability.”

“Early-career frontend/full-stack engineer with internship experience at EventEase, where they built a live scoring and tournament-operations platform for charity golf events. They stand out for owning complex multi-user browser UIs, making thoughtful architecture trade-offs, and translating real user feedback into features like responsive admin tools, moderated photo sharing, and team/organizer chat.”

Xuebin Dong

Screened

Mid-level Software Engineer specializing in distributed systems and healthcare data platforms

San Diego, CA4y exp

“Full-stack and AI engineer who built both a large-scale clinical imaging dataset exploration engine and DMP Chef, an open-source LLM product for generating funder-compliant Data Management Plans. Stands out for combining strong product ownership, data-intensive backend architecture, and practical LLM systems work with retrieval, structured outputs, evals, and human-in-the-loop compliance safeguards.”

“BI developer and software engineer with experience spanning pre-funding startup work and production web applications. They built database/reporting foundations for an early-stage venture, later developed an AI-assisted regression testing tool in Python/Selenium, and worked on JavaScript dashboards plus bidirectional API integrations in ASP.NET Core systems.”

“Senior full-stack engineer with 7+ years of Python-centric experience who has worked in lean startup environments and personally drove backend architecture for a data-intensive B2B analytics platform. Stands out for navigating ambiguous, fast-changing requirements while improving scalability and performance through Redis, Celery, RabbitMQ, and PostgreSQL optimization.”

“Full-stack engineer with experience building healthcare scheduling, telehealth, reimbursement, and agent workflow systems using React, Node.js, MySQL, TypeScript, and GraphQL. Stands out for combining hands-on product design in ambiguous environments with measurable technical impact, including a 40% performance improvement and reduced LLM costs through batching and backend optimization. Also brings manufacturing/MES experience and a strong habit of reshaping products based on direct user feedback.”