Hire the Best Test-Driven Development Specialists
in the United States

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Gabriel D.

New York, New York

$19/hr
5.0
9 jobs

I test software the way real users use it, including the mistakes, edge cases, and confusing paths that often get missed. I’m a QA tester with 1 year of hands-on QA experience and 4 years of IT support experience. My IT background helps me troubleshoot quickly, understand user issues, and test software from both a technical and user-focused perspective. What I bring to your project: - Functional, regression, smoke, and exploratory testing across web apps and user workflows - Clear, actionable bug reports with steps to reproduce, expected vs. actual results, severity, screenshots, and retest notes - Defect tracking and test documentation in Jira and Qase - Authentication, sign-up/sign-in, SSO, forms, dashboards, navigation, and third-party integration testing - A user-first mindset that focuses on real-world behavior, not just happy paths I work best with teams that care about quality, move fast, and need someone who communicates clearly, tests carefully, and helps prevent issues from reaching users. Expertise: Manual Testing | Functional Testing | Regression Testing | Smoke Testing | Exploratory Testing | End-to-End Testing | User Acceptance Testing | System Testing | Integration Testing | Build Validation Testing | Risk-Based Testing

  • QA Testing
  • IT Support
  • IT Service Management
  • Software QA
  • QA Automation
  • QA Engineering
  • Manual Testing
  • Exploratory Testing
  • Regression Testing
  • Smoke Testing
  • Jira
  • Bug Reports
  • Test Case Design
  • Web Application
  • API
  • JavaScript
Tim T.

St. Louis, Missouri

$25/hr
5.0
11 jobs

I’m a Senior Software Engineer and Full-Stack Developer with 10 years of experience building web applications, mobile apps, SaaS platforms, APIs, business systems, and cloud-based solutions. I work across the full development process — from taking an idea or existing system, figuring out what needs to be built, developing it, deploying it, and continuing to improve it after launch. My experience includes: • Full-stack web development • iOS and Android app development • SaaS and business applications • POS and payment systems • AI integrations and AI-powered features • REST APIs and third-party integrations • Database design and development • Firebase and real-time applications • Google Cloud and cloud deployment • Existing application troubleshooting and modernization Technologies I work with include C#, .NET, Python, PHP, Laravel, React, TypeScript, JavaScript, Swift/SwiftUI, Kotlin/Jetpack Compose, SQL, Firebase, Google Cloud, MySQL, PostgreSQL, and SQL Server. I’ve worked on everything from production business software and payment systems to mobile apps, healthcare websites, AI-powered applications, and custom platforms built around a client’s idea. I’m comfortable jumping into an existing codebase to fix problems or building something new from the ground up. Most importantly, I enjoy working directly with people who have an idea and need someone who can turn that idea into working software.

  • Product Development
  • Web Development
  • Web Application
  • Artificial Intelligence
  • Android App Development
  • iOS Development
  • App Development
  • Mobile Game
  • Python
  • C#
  • ASP.NET Core
  • HTML
  • Database
  • Database Administration
  • SwiftUI
Ankita G.

Westborough, Massachusetts

$15/hr
5.0
16 jobs

Hi! I am a Senior QA Engineer with 9+ years of hands-on experience in Software Quality Assurance. I specialize in manual QA, exploratory testing, mobile and web application testing, API validation, and SaaS QA. I help startups, SaaS founders, e-commerce platforms, FinTech, and global enterprise companies launch error-free, high-performing digital products. My background includes working with multinational corporations (Accenture, Herbalife, Misys) as well as fast-growing tech startups (Virtual Presenz Inc.). ⭐ What Clients Say (Upwork Testimonials) 💬 "Great experience working with Ankita. She was reliable, thoughtful, and provided detailed, useful feedback throughout the testing process. She took the time to understand the product, identify issues, and explain..." — Client | AI-Powered Dating App Usability & Product QA 💬 "Ankita did excellent QA work on our pre-launch web app. She was thorough, methodical, and delivered a clear, well-organized bug report with reproducible steps..." — Client | SaaS Web App Cross-Browser & Mobile QA 💬 "Ankita's work went beyond expectations. She responded quickly and communicated clearly. Her reports were thorough and informative. She is now my go-to QA tester." — Client | Shopify Website QA Tester 💬 "Ankita delivered exactly what a closed test needs: a complete, on-schedule walkthrough plus a structured defect report with severity, repro steps, and screenshots..." — Client | Privacy-First Dating App (Android Testing) 💼 What I Bring to Your Project ✔️ 9+ Years of QA Experience: Deep expertise across SDLC/STLC processes in enterprise & startup environments. ✔️ End-to-End Test Ownership: Skilled in requirement reviews, edge-case identification, and designing test plans/cases. ✔️ Agile & Scrum Mastery: Active participant in daily Scrum workflows, providing clear status updates and raising risks early. ✔️ Technical & AI Capability: Python & Selenium test automation knowledge, Flask API integration experience, and a Prompt Engineering Certification (edX). 🧪 QA & Testing Expertise • Functional & E2E Testing: System compliance, exploratory testing, and complex user workflow validation. • Mobile App QA: Real-device testing on iOS & Android, UI/UX evaluation, and beta app feedback. • Web & SaaS Testing: Pre-launch & post-launch cross-browser, cross-device, and responsive layout testing. • Smoke & Regression Testing: Pre-release test execution to prevent production defects. • API Testing: API workflow validation and payload inspection using Postman & Swagger. • Defect Tracking & Reporting: Clear, reproducible bug reports with steps, logs, screenshots, and severity ratings. 🤖 AI Testing & Microservices Experience • Medical & Healthcare AI: Executing scripted cases, verifying compliance, and output accuracy. • AI Apps & Chatbots: Evaluating conversational flows, prompt responses, and usability. • AI Microservices Integration: Testing AI microservices for security analytics (Crowd Analytics, Weapon Detection, Environment Analytics). • Prompt Engineering Workflows: Certified in Prompt Engineering (edX) with hands-on experience validating AI prompt outputs. 🛠️ Tools & Certifications • Bug Tracking & Tools: Jira, Quality Center (ALM), TFS, Trello, Discord, Postman, Chrome DevTools • Certifications: 🎓 Prompt Engineering Certification – edX 🎓 Python Programming Course – Harvard University 🎯 Domains Served • Medical AI & Healthcare Tech • AI-Powered Apps • SaaS Web Applications • E-Commerce & Retail • Financial & Payment Systems Whether you need pre-launch QA for a SaaS product, structured testing for an AI mobile app, medical AI validation, or ongoing QA support, I am ready to jump in and ensure your application is launch-ready! Looking forward to connect soon.

  • Test Development
  • Jira
  • Functional Testing
  • Test Execution
  • Python Script
  • SQL
  • Case
  • Presentations
  • Information Technology
  • Python
  • SQL Programming
  • Bug Reports
Sergei T.

San Francisco, California

$10/hr
5.0
11 jobs

Full-stack developer based in San Francisco (PST). I take founders from idea to a live, production app, fast, and with senior-level execution. In the past year I've shipped 5 products end-to-end: • ChekBack - a receipt-cashback app • PhotoOffice - an AI passport-photo service • ChessTourism - a chess-tournament platform • Pluto - a field-service management system for home-service companies • MotoSocial - a social network for motorcyclists Each one went from concept to deployment, including auth, payments, integrations, and infrastructure. Why clients work with me: • US-based, real-time overlap with your business hours • Native, clear English on calls and in writing • Senior delivery - I ship working software, not just plans • I stay with you until your app is published - I never leave you alone with your issues or concerns • Warranty after delivery - if something breaks on my work, I fix it, no extra charge Core stack: React, React Native, Next.js, TypeScript, Node.js, PostgreSQL. Also: Python (FastAPI/Django), Expo, Redis, AWS/Hetzner/Cloudflare, CI/CD, REST & GraphQL, CRM and third-party integrations. Best fit for: founders and startups who need an MVP or full product built right, the first time. Send me your idea and I'll reply with a rough scope and timeline. No charge.

  • React
  • Node.js
  • Python
  • JavaScript
  • TypeScript
  • PostgreSQL
  • Amazon Web Services
  • Docker
  • API
  • Web Development
  • React Native
  • MongoDB
  • Git
  • MySQL
  • GraphQL
  • Mobile App Development
  • Mobile App Bug Fix
  • Android
  • iOS
Tinatin A.

East Brunswick, New Jersey

$25/hr
5.0
17 jobs

Bugs found before launch save thousands in fixes after. I help startups and product teams ship cleaner software by catching critical issues early — before real users do. What I deliver: → Detailed bug reports with clear reproduction steps → Structured test cases for web & mobile apps → Fast turnaround with clear communication Tools: Jira, Trello, TestRail | Certified in Software Quality Engineering Ready to test your product? Let’s talk

  • QA Testing
  • QA Software & Testing Tools
  • Software QA
  • Mobile QA
  • Testing
  • Test Report
  • Test Script
  • Manual Testing
  • UserTesting
  • User Experience
Karen P.

Glastonbury, Connecticut

$175/hr
4.9
77 jobs

Safeguard digital identities by designing and implementing robust Single Sign-On solutions, automating identity onboarding and offboarding, and enforcing least-privilege access controls across complex environments. Clients benefit from scalable, resilient, and highly secure IT solutions delivered through deep technical expertise, industry-leading information security best practices, and disciplined Agile execution—ensuring strong system performance while reducing operational and security risk. Solutions to Help You Succeed with Your IAM & Cloud Operations ✔ Identity Platforms That Scale With Confidence Benefit from enterprise-grade identity solutions proven to support 35M+ users, ensuring reliability in high-volume environments. ✔ Accelerated and Secure Cloud Adoption Reduce risk and complexity through deep Microsoft Azure architecture and engineering expertise, enabling faster modernization without compromising security. ✔ Solutions Informed by Global Best Practices Leverage international consulting experience to meet diverse compliance, and operational requirements. ✔ Faster Delivery With Lower Project Risk Achieve valued outcomes sooner through SAFe®-aligned Agile delivery, designed to adapt as requirements evolve. ✔ A Transparent, Trusted Technology Partner Gain a responsive partner committed to clear communication, accountability, and long-term success—not just project completion. Let’s connect to explore how we can secure your digital identities and accelerate innovation. We look forward to working with you.

  • Test-Driven Development
  • Node.js
  • JavaScript
  • ASP.NET MVC
  • Web Development
  • .NET Framework
  • Agile Software Development
  • Microsoft Azure
  • Auth0
  • OAuth
  • Web Service
  • User Identity Management
  • Single Sign-On

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