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Hi, I’m Fahim — a Full-Stack Engineer with experience building scalable mobile and web systems. I specialize in architecting clean, maintainable applications across iOS, frontend, and backend — from MVP to production-scale platforms. I recently transitioned to full-time freelancing after leading impactful projects at Appen, where I: - Architected and developed a crowdsourcing iOS app from scratch using SwiftUI & Combine - Maintained an existing React Native app - Pivoted into full-stack development for CrowdGen (React & Java Spring Boot) - Delivered scalable solutions and optimized performance across both mobile and backend systems 💡 How I can help you: - Native iOS (Swift, SwiftUI, Combine) & cross-platform mobile development (React Native) -End-to-end API integration, frontend (React, Next,js), and backend development (Spring Boot, Node.js, .NET) - AI integration in apps (ML models, AI-powered features) - Maintainable, well-architected codebases - Product-oriented development — I think beyond just coding Now as a freelancer, I’m available to collaborate on impactful projects — whether you're building an MVP, enhancing an existing app, or looking for an experienced partner to help scale your product. Let’s connect and build something great.

🏆 TOP-RATED REMOTE QA ENGINEER 🌍 Clients: USA · Canada · Russia · Australia · Malaysia 🤝 Hired as freelancer — retained long-term, still working today ✅ 95–98% Bug-Free Production Releases, Every Single Project 🚀 9+ International Products Delivered Fully Remote 👔 3+ Years — AI Products · Enterprise · Healthcare · Logistics 🌟🌟 15+ Products QA'd Across 6 Countries 🌟🌟 I'm a research-driven QA Engineer specializing in AI system validation, test automation architecture, and enterprise-grade software quality. I don't just find bugs — I build systems that prevent them from reaching production. ━━━━━━━━━━━━━━━━━━━━━━ 🔍 WHAT I SPECIALIZE IN ━━━━━━━━━━━━━━━━━━━━━━ • AI output validation — adaptive learning, recommendation engines, predictive logic • Test automation — Cypress, Playwright, Selenium, Appium • Performance & load testing — k6, JMeter (1,000+ virtual users) • API testing — Postman, REST APIs, hybrid UI+API strategy • Mobile QA — iOS & Android cross-platform validation • Developer-ready bug reports with full reproduction steps • Root cause analysis for complex, hard-to-reproduce defects • Early-stage feasibility QA — catching issues before dev starts • GitLab CI/CD integration & automated reporting dashboards ━━━━━━━━━━━━━━━━━━━━━━ 📊 REAL RESULTS ━━━━━━━━━━━━━━━━━━━━━━ ✔ Test coverage +60% via Cypress automation suites ✔ Debugging time -90% with developer-optimized bug reports ✔ QA team efficiency +80% through documentation & automation ✔ GPS hardware precision +75% via integration testing ✔ 95–98% bug-free releases across every project ━━━━━━━━━━━━━━━━━━━━━━ 🌍 INTERNATIONAL PROJECTS ━━━━━━━━━━━━━━━━━━━━━━ 🤖 Hardcopy — AI Document Intelligence 🤖 Nexus — AI Investor Intelligence 🤖 FutureSpark — AI Student Learning 🤖 Uplinked — AI Social Media Assistant 🤖 Fixzanet — AI Job Marketplace 🤖 Cytrus.Ai — Commercial AI Platform 🤖 Codebeu — AI Mobile Community App 🚚 ClearJet — Delivery Infrastructure ✅ Halal Tracking System — Cross-border Compliance 🏥 Premature Care App — Healthcare Mobile (iOS & Android) ━━━━━━━━━━━━━━━━━━━━━━ 💻 WHY CLIENTS KEEP ME ━━━━━━━━━━━━━━━━━━━━━━ • Started as a freelancer — retained indefinitely. Zero missed deadlines. • I investigate root causes, not just surface symptoms • Bug reports that save your engineers hours, not add to their backlog • Truly async-ready — across Russia, US, AUS timezones, no supervision needed • I proactively research smarter toolchains — I once saved a company's full monthly SaaS subscription by finding a self-hosted alternative 🛠 Cypress · Playwright · Selenium · Appium · Postman · k6 · JMeter · QASE · GitLab · Notion · Agile · TDD · BDD QA protects your users, your revenue, and your reputation. If you need a QA engineer who takes full ownership and delivers — let's talk. 🔥 Try me once, you won't be disappointed. Real work with proof. ❤️ ━━━━━━━━━━━━━━━━━━━━━━ 🏷 SKILLS / SEARCH TAGS ━━━━━━━━━━━━━━━━━━━━━━ QA Engineer · Quality Assurance · Test Automation · Cypress Automation · Playwright · Selenium WebDriver · Appium Mobile Testing · API Testing · Postman · Performance Testing · k6 Load Testing · JMeter · AI QA Testing · AI Output Validation · Regression Testing · Manual Testing · Bug Testing · Agile QA · TDD · BDD · End-to-End Testing · Mobile QA · iOS Testing · Android Testing · REST API · CI/CD QA · QASE · Root Cause Analysis · QA Consultant · Remote QA · SaaS QA · Enterprise QA · Healthcare QA · Test Documentation · QA Automation Framework

Hello! I’m Yudha Islami Sulistya, a Software Engineer, Machine Learning Engineer, and Lecturer passionate about transforming ideas into powerful digital solutions. With expertise spanning from mobile and web development to AI-powered automation, I help individuals, startups, and organizations bring innovative projects to life efficiently and reliably. ✅ Upwork Talent with a Strong Academic & Industry Background ✅ 100% Commitment to Quality & Long-Term Collaboration ✅ 7+ Years of Experience in Software Development & Automation In recent years, I’ve led and contributed to diverse software projects, including mobile apps, web platforms, automation systems, and AI-driven solutions for universities, startups, and government sectors. From cross-platform Flutter apps, robust backend systems with Golang/Node.js, to no-code automation with n8n, I specialize in crafting reliable, scalable, and maintainable software products. 🌟 What I Bring to Your Project ✔️ Expertise in building cross-platform mobile apps with Flutter ✔️ Full-stack web development with Next.js, React, Node.js, and Golang ✔️ AI-powered automation with n8n and AI Agent integration ✔️ CI/CD pipelines using GitHub Actions, Codemagic, and Docker ✔️ Seamless API design and integration with REST ✔️ Experience integrating Firebase, OneSignal, Google Maps, and Agora ✔️ Cloud deployment with VM, Vercel, and Azure ✔️ Strong academic foundation with a focus on Machine Learning and AI ✔️ Ability to convert Figma/Adobe designs into production-ready code ✔️ Research-driven mindset, ideal for building smart, scalable systems 🧩 Additional Skills State Management: GetX, Provider, Bloc Automation & AI Tools: n8n, Custom AI Agents, Python Automation Database Expertise: MySQL, PostgreSQL Mobile Development: Flutter, Dart, Kotlin (basic), Swift (basic) Testing: Unit, Integration, and Widget Testing with Mockito DevOps: Docker, Kubernetes, Terraform UI/UX: Tailwind CSS, Radix UI, Shadcn UI Game Development (Basic): Godot, Unity 🎯 My Approach I believe in delivering clean, scalable, and maintainable code based on industry best practices, including: ✅ SOLID principles ✅ Test-Driven Development ✅ Reusable widget/component creation ✅ Robust architecture design (MVC, BLoC, Microservices) ✅ Security and Performance optimization 💡 Let’s Build Together If you're looking for a reliable Software Engineer, AI Automation Specialist, or Mobile/Web Developer, let's connect. Whether it's building your app from scratch, optimizing an existing system, or automating business processes with AI and n8n, I’m ready to help you achieve your project goals with passion and precision. I’m open to long-term collaborations, NDAs, and challenging projects that make a real-world impact.

The most valuable bugs are the ones your customers never see. Over the past 12+ years, I have logged more than 27,000 hours worth of QA work across 70+ projects. Several client relationships span multiple years and thousands of hours, reflecting the level of trust, consistency, and ownership I bring to every project. I am a Senior Manual QA specializing in GitHub-based development workflows, pull request validation, exploratory testing, and AI-assisted development environments. My role is not simply to find bugs. My goal is to help teams ship with confidence by identifying issues before they reach production, where they become significantly more expensive and disruptive to fix. I specialize in Manual QA for iOS, Android, and Web applications, helping product teams reduce release risk through exploratory testing, regression testing, feature validation, and detailed bug investigation. By uncovering issues early in the development cycle, I help teams avoid costly production incidents, customer-facing defects, and unnecessary rework. Throughout my career, I have worked closely with founders, product managers, designers, developers, and distributed teams to improve product quality and support reliable releases. I enjoy understanding how a product works, exploring user behavior, identifying edge cases, and providing actionable feedback that helps teams make informed decisions before shipping. In addition to traditional QA activities, I regularly work within GitHub-based development workflows, validating pull requests, reproducing reported issues, verifying fixes, reviewing implementation outcomes, and providing structured feedback before changes are merged or released. As development teams increasingly adopt AI-assisted coding tools, QA plays an even more important role as the final validation layer. Recent projects have expanded my responsibilities beyond traditional testing into PR validation, agent-assisted development workflows, QA session orchestration, and structured feedback loops between developers, coding agents, and product teams. Areas of expertise: • Manual Testing (iOS, Android, Web) • Exploratory Testing • Regression Testing • Feature Validation • Release Validation • Pull Request Validation • GitHub-Based Development Workflows • Cross-Device Testing • Bug Investigation & Reproduction • QA Documentation & Reporting • AI-Assisted Development Validation • Agile Product Development Tools and Platforms: • GitHub • Jira / Atlassian • Confluence • Azure DevOps • Charles Proxy • Trello • TestRail • Mixpanel • Loom • Lightshot Device Lab Available for Real-Device Testing: iOS Devices • iPhone 6 Plus (iOS 12) • iPhone 7 Plus (iOS 13) • iPhone 12 Pro Max • iPhone 13 Mini • iPhone 14 Pro Max • iPhone 15 Pro • iPhone 16e • iPod Touch 6th Generation Android Devices • Samsung S7 • Samsung S9 • Samsung Note 9 • Samsung A51 • Samsung A56 Desktop • MacBook Pro 15" • iMac M1 I am particularly interested in long-term collaborations where I can develop a deep understanding of the product, contribute meaningful QA insights, reduce release risk, and become a trusted quality partner for the team rather than simply an external tester.

"Information is the oil of the 21st century, and analytics is the combustion engine." – Peter Sondergaard In recent years, I've been the go-to Insight Analyst and Software QA Tester for numerous clients, turning data into game-changing insights! And here are what I do 📝 Test Case Management: Developing and maintaining comprehensive test case suites to ensure thorough testing coverage and efficient testing processes. 🚀 Exploratory Testing: Uncovering hidden issues and potential improvements through a methodical exploration of your software. 🔄 Regression Testing: Rigorous testing to safeguard your product's integrity with each update, ensuring existing functionalities remain intact. 💨 Smoke Testing: Quick validation of essential functionalities, ensuring your software is ready for deeper testing. 🌍 Internationalization (i18n) Testing: Adapting your software to global audiences, ensuring it speaks the language of the world. 🔌 API Testing: Ensuring seamless integration and communication between different software components. 👩‍💻 User Experience (UX) Testing: Conducting comprehensive assessments to ensure that your software provides an intuitive and seamless user experience. Why Choose Me? ⌛ Experience: Years of hands-on experience in QA with 22K+ hours clocked, guaranteeing reliability and efficiency. 🎯 Proven Track Record: Consistent delivery of high-quality results, earning trust and satisfaction from clients. 🎁 Complimentary Consultation: Let's discuss your needs and how I can help elevate your software's quality. Cheers, Dwindy