Vetted JavaScript Professionals

Pre-screened and vetted.

Hardik Goyal - Senior Integration Developer specializing in enterprise automation and data integration in United States

Hardik Goyal

Screened

Senior Integration Developer specializing in enterprise automation and data integration

United States4y exp
Vail ResortsPurdue University

Frontend-focused engineer with experience building and optimizing React-based dashboards and reusable component libraries in a multi-team, internal open-source-style environment at Merck (ClearSight Forecasting Dashboard). Also handled production user issues on a live streaming platform (GameSee.tv) and built a financial application from scratch at Manipal Business Solutions, owning backend services, middle-tier APIs, and third-party integrations.

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Ethan Lam - Junior Software Engineer specializing in data platforms and full-stack development in Toronto, Ontario

Ethan Lam

Screened

Junior Software Engineer specializing in data platforms and full-stack development

Toronto, Ontario3y exp
Warner Music GroupUniversity of Toronto

Software engineer with Warner Music Group experience owning and shipping analyst-facing data products (marketing/streaming data dashboards) end-to-end with high adoption through continuous stakeholder feedback. Also builds side projects with TypeScript/React and domain-driven API design, emphasizing flexibility (including swapping databases mid-development) and pragmatic microservices reliability patterns (logging, timeouts, retry backoff).

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SM

Sahithi M

Screened

Mid-level GenAI/ML Engineer specializing in LLM applications and enterprise automation

5y exp
UnitedHealth GroupRivier University

Built and shipped a production LLM-powered healthcare support agent at UnitedHealthGroup, using LangChain + FAISS RAG on AWS SageMaker with CloudWatch monitoring and human-in-the-loop fallbacks for safety. Strong focus on reliability engineering (confidence gating, retries/timeouts, caching) and continuous evaluation loops; reported ~40% improvement in query resolution efficiency while reducing manual support workload.

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AM

Senior Software Engineer specializing in backend microservices and distributed systems

United States7y exp
WalmartCleveland State University

Senior software engineer (5+ years) from Walmart Global Tech who owned and operated high-scale supplier inventory submission systems, including a microservice handling submissions up to 500k items and a data platform processing ~10TB/day. Strong in AWS/Kubernetes (EKS), Kafka/Spark streaming + batch pipelines, and production operations (on-call, metrics/alerting), with demonstrated performance wins (30% faster responses, 50% faster processing).

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Vineeth Reddy Vallapureddy - Mid-level Full-Stack Software Engineer specializing in backend microservices and enterprise AI tools in Redwood City, California

Mid-level Full-Stack Software Engineer specializing in backend microservices and enterprise AI tools

Redwood City, California5y exp
C3 AIUniversity at Buffalo

Backend/platform engineer with experience across C3.ai (supply chain demand planning) and Amdocs (telecom), working on large-scale data systems and microservices. Has driven first-time adoption experiments of Snowflake + Spark to handle billion-record workloads, built Jenkins-to-Kubernetes delivery pipelines with Nexus artifact management, and implemented Kafka streaming between microservices with HA and retry/error-handling patterns.

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Maranatha Ilesanmi - Senior Frontend Engineer specializing in React and TypeScript in Kitchener, Canada

Senior Frontend Engineer specializing in React and TypeScript

Kitchener, Canada11y exp
CartaObafemi Awolowo University

Frontend engineer with deep experience modernizing KYC flows at Carta, including rebuilding country-specific KYC forms into a scalable configuration + validation-schema system that cut new-jurisdiction support from 2–3 months to ~2 weeks. Strong on quality and rollout practices (E2E/backend testing, early QA engagement, staged/A-B rollouts) and performance optimization for heavy React/TypeScript dashboards using Intersection Observers for lazy loading.

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Thomas To - Mid-level Full-Stack Engineer specializing in AI/ML data platforms for biotech and FinTech in Emeryville, CA

Thomas To

Screened

Mid-level Full-Stack Engineer specializing in AI/ML data platforms for biotech and FinTech

Emeryville, CA6y exp
Canventa Life SciencesUC Davis

AI/ML full-stack practitioner in a small-scale manufacturing/lab operations environment who deployed a production ML system to improve blood cell order fulfillment by predicting yield/success from donor characteristics. Experienced building custom multi-agent orchestration (Python, LangChain/LangGraph, MCP) and balancing reliability, data quality constraints, and token/ROI economics while communicating tradeoffs to VP-level business stakeholders.

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João Arruda - Senior Frontend Engineer specializing in Vue.js, testing strategy, and scalable architecture in Remote, EU

João Arruda

Screened

Senior Frontend Engineer specializing in Vue.js, testing strategy, and scalable architecture

Remote, EU15y exp
TheyDoSENAC São Paulo

Frontend engineer/lead focused on scalable architecture and reusable UI platforms: built a schema-driven, IoC-based unified filtering system across an app with feature-flagged rollout and strong TypeScript/testing discipline. Also created a standalone React NPS survey package that works across microfrontends (handling peer dependency/version issues) and implemented accessibility improvements for complex interactions like drag-and-drop while leading an Atomic Design → Feature-Sliced Design migration.

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Natalie Tsang - Intern Mechatronics/Robotics Software Engineer specializing in ADAS and ROS2 in Waterloo, ON

Natalie Tsang

Screened

Intern Mechatronics/Robotics Software Engineer specializing in ADAS and ROS2

Waterloo, ON1y exp
Harbinger MotorsUniversity of Waterloo

Robotics software engineer with experience spanning embedded C++ control on microcontrollers and ROS/ROS2 production systems in automotive and marine robotics contexts (Harbinger Motors, Impossible Metals). Has deep hands-on experience debugging real-time image pipelines (DDS/QoS tuning, HIL stress testing) and building large automated test suites (1200+ tests) plus CI/CD (Dockerized Playwright tests on Jenkins).

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Jungbeom Lee - Mid-level Mobile Software Engineer specializing in Android performance and growth in Irvine, CA

Jungbeom Lee

Screened

Mid-level Mobile Software Engineer specializing in Android performance and growth

Irvine, CA6y exp
FreelanceUCLA

Backend engineer with primary experience in Node.js and serverless AWS/Firebase architectures. At iSharingsoft, owned a data sync protocol optimization effort—used server log analysis to find redundant read/write calls, redesigned sync logic, added caching, and reduced server traffic by 15%, improving performance and cost.

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Bernie Miao - Junior Full-Stack Software Engineer specializing in EdTech and AI-powered learning tools in Berkeley, CA

Bernie Miao

Screened

Junior Full-Stack Software Engineer specializing in EdTech and AI-powered learning tools

Berkeley, CA2y exp
CollegeNETUC Berkeley

Edtech/education-focused engineer who took an accessibility-critical LLM/vision feature from concept to production: built an OpenCV-gated whiteboard capture pipeline feeding Gemini Vision for handwriting-to-LaTeX, improving math transcription 80% while cutting inference costs 60%. Also built RAG observability and retrieval fixes that stabilized inconsistent answers, and partnered directly with sales to reshape demos and open a new K-12 revenue pipeline aligned to California Digital Divide grant requirements.

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Sragvi Vadali - Junior Software Engineer specializing in AI/ML and real-time systems

Sragvi Vadali

Screened

Junior Software Engineer specializing in AI/ML and real-time systems

2y exp
University of Southern CaliforniaUSC

Backend/AI engineer who built a real-time vector database system for high-frequency financial data using Kafka/Flink on Kubernetes, achieving sub-100ms similarity search at 10k+ concurrent load and resolving tricky duplication issues with idempotency/versioning. Also shipped an end-to-end LLM-based travel itinerary feature (profiling + prompt workflows + APIs) with a focus on quality consistency and low latency.

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Supreetha Kashyap - Mid-Level Software Engineer & Data Analyst specializing in cloud analytics and BI in Jacksonville, FL

Mid-Level Software Engineer & Data Analyst specializing in cloud analytics and BI

Jacksonville, FL4y exp
Johnson & JohnsonUniversity of Texas at Arlington

Built and owned an end-to-end Seat Allocation & Management System at Accenture, replacing a legacy process with a scalable web app used across teams. Deep focus on reliability under concurrency (transactions + unique constraints + idempotent APIs) and on Postgres performance tuning (composite indexes, EXPLAIN ANALYZE), plus post-launch production support and monitoring.

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Hari Chandana Kasula - Entry Machine Learning Engineer specializing in NLP, computer vision, and recommender systems in New York, NY

Entry Machine Learning Engineer specializing in NLP, computer vision, and recommender systems

New York, NY0y exp
Columbia UniversityColumbia University

Built and shipped an end-to-end podcast recommendation system exposed via a Flask API and React UI, explicitly balancing relevance, diversity (MMR), and safety constraints while meeting ~200ms latency targets. Also implemented a production-style RAG/information-extraction pipeline using web retrieval, spaCy NER, and fine-tuned SpanBERT with guardrails and evaluation loops (precision/recall/F1) to tune confidence thresholds and improve reliability.

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Evan Z - Junior Software Engineer specializing in video streaming and processing systems in Champaign, IL

Evan Z

Screened

Junior Software Engineer specializing in video streaming and processing systems

Champaign, IL1y exp
PhrazeUniversity of Illinois Urbana-Champaign

Software engineering intern at China Telecom who built and continuously evolved a real-time transaction platform ("Smart Tangerine") focused on strong consistency and peak-hour concurrency. Implemented microservices with Redis and RabbitMQ to decouple heavy processing and cut latency (~80ms to ~30ms), and led a zero-downtime migration from a monolith using strangler pattern, dual-write, and traffic shadowing.

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Satwik Alla - Mid-level Full-Stack Software Engineer specializing in scalable APIs and real-time AI apps in United States of America

Satwik Alla

Screened

Mid-level Full-Stack Software Engineer specializing in scalable APIs and real-time AI apps

United States of America3y exp
Cosmo AGI, LLCUniversity of Maryland, Baltimore County

Lead software engineer (3+ years) who built and scaled an AI product backend at Cosmo AGI from the ground up using FastAPI/Postgres/Redis/vector DB, targeting sub-200ms latency and supporting 1000+ active users. Strong in production-grade security and observability (OAuth/JWT, RBAC, Postgres RLS, Prometheus/Sentry), plus DevOps automation (Docker, GitHub Actions, blue-green deploys) with measurable impact on uptime, incidents, engagement, and deployment speed.

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Zuocheng Li - Entry-Level Software Engineer specializing in full-stack web and Android development in San Jose, CA

Zuocheng Li

Screened

Entry-Level Software Engineer specializing in full-stack web and Android development

San Jose, CA0y exp
San José State UniversityUSC

Early-career developer whose experience comes from classroom projects but has completed full end-to-end web app delivery: implemented login/search/favorites, integrated external APIs, and deployed to Google Cloud for multi-device use. Demonstrates user-centered iteration by recruiting friends to test and provide feedback, and has hands-on production-style debugging experience (e.g., resolving CORS issues during deployment).

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SaiTeasmitha Kaja - Mid-level Full-Stack Software Engineer specializing in Java/Spring Boot and cloud microservices in Houston, TX

Mid-level Full-Stack Software Engineer specializing in Java/Spring Boot and cloud microservices

Houston, TX4y exp
HPEUniversity of Houston

Backend-focused Python/Flask engineer who has built authentication/profile services with clean modular architecture (blueprints + service layer) and tuned SQLAlchemy/Postgres for scale using indexing, query rewrites, and pagination. Has production-style integration experience for AI/ML via TensorFlow Serving and OpenAI APIs (batching, rate limiting, caching), plus multi-tenant data isolation and high-throughput background processing with Celery/Redis and idempotent jobs.

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MD

Intern Full-Stack Software Engineer specializing in web, mobile, and accessibility

Los Angeles, CA0y exp
Lumina Health InstituteUSC

Full-stack engineer who has built and shipped production Next.js (App Router + TypeScript) applications end-to-end, including an authenticated dashboard with protected routing and post-deploy troubleshooting. Designed Postgres schemas for collaboration/analytics (users/workspaces/sessions/events) and achieved ~60% query-time reduction through indexing and query-plan-driven optimization, with a strong emphasis on accessibility and server-first React architecture.

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Nirmal Attarde - Mid-Level Software Development Engineer specializing in backend microservices and cloud

Mid-Level Software Development Engineer specializing in backend microservices and cloud

3y exp
PACCARUniversity of Illinois Urbana-Champaign

Software engineer with Oracle experience deploying a BioCatch fraud-detection integration into HDFC Bank’s core banking platform, using phased rollout and real-time monitoring and reporting ~80% fraud reduction. Also built a modular speech-to-text product (VocalSense AI) achieving ~95% accuracy and has strong production incident response skills (15-minute recovery) plus AWS serverless API hardening for messy inputs.

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TS

Mid-Level Full-Stack .NET Developer specializing in cloud microservices and data pipelines

6y exp
Elevance HealthMissouri State University

Backend/data engineer with experience at Citi and Elevance Health, building end-to-end pipelines and data services in regulated, high-volume environments. They combine Python, SQL, .NET, Azure Functions, and strong observability/reliability patterns to improve processing speed, reduce manual effort, and maintain high uptime across financial and healthcare data platforms.

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SP

Sunghee Park

Screened

Mid-level project manager specializing in media, entertainment, and client operations

Los Angeles, CA4y exp
RappNYU

CRM/project management professional with RAPP experience supporting AT&T consumer campaigns, combining high-volume campaign execution with data-informed optimization. Notable for leading a 140-version direct mail/email program under urgent timelines, coordinating multiple stakeholders, and using incrementality analysis to refine targeting and improve revenue impact.

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DM

Mid Software Engineer specializing in distributed cloud-native backend systems

Gainesville, FL4y exp
Silicon AssuranceUniversity of Florida

Backend/AI workflow engineer who built production-grade orchestration systems for hardware security verification at Silicon Assurance (Nextflow/Python/Postgres) and a multi-agent LLM-driven regulatory code checking system at the University of Florida. Emphasizes reliability: strict plan/execute/verify boundaries, queue-based isolation, and strong observability/auditability with Prometheus/Grafana and persisted prompts/tool calls.

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YP

yamini p

Screened

Senior Full-Stack Engineer specializing in distributed systems

6y exp
SamsungJawaharlal Nehru Technological University

Full-stack product engineer with hands-on ownership across React/TypeScript, serverless backends, and Postgres, combining technical depth with strong UX instincts. Stands out for measurable impact: improved a slow query from seconds to under 200ms and increased onboarding completion by about 25%, while also building reusable platform primitives and scalable multi-tenant configuration systems.

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