I’m an ISTQB-Certified QA Engineer with a mechanical engineering background, over 6 years of international experience (Dubai & Morocco), and 5-digit earnings along with both the TOP RATED badge and a 100% JOB SUCCESS rate on here.
With a solid engineering foundation and 100+ hours of focused QA training backed by certifications, I bring strong problem-solving skills, sharp attention to detail, and a proactive mindset to every project I undertake.
My skillset covers both the fundamentals and advanced tools across various QA disciplines:
• 🛠 Project & Defect Tracking: Jira, Trello, Zephyr Scale
• 🔍 API & Performance Testing: Postman, JMeter
• 💻 Programming & Queries: JavaScript, TypeScript, SQL
• 🤖 Test Automation: Playwright, Selenium IDE/WebDriver, TestNG, Katalon Studio
Software Testing
Automated Testing
Jira
Postman
Apache JMeter
JavaScript
TypeScript
SQL
Selenium
TestNG
Manual Testing
Bug Reports
Functional Testing
Test Case Design
GUI Testing
Naim Burak B.
Istanbul, Turkey
$60/hr
5.0
20 jobs
I am a Lead Software Engineer specialized in agentic programming and multi-agent orchestration for software development. I use AI tools as part of my daily workflow to speed up architectural design and implementation while maintaining high code quality and strong test coverage.
I focus on orchestrating multiple agents across different stages of the software development lifecycle, including analysis, design, implementation, testing, and iteration. This allows me to move faster on complex systems without sacrificing structure, maintainability, or reliability.
I work comfortably with ambiguous requirements and turn early ideas into clear architectures and production-ready code. If you are looking for an experienced engineer who uses AI tools professionally to deliver faster and better software, I can help.
Node.js
JavaScript
Java
Amazon Web Services
Agile Software Development
API Development
RESTful API
Computer Engineering
Scrum
Agile Project Management
Claude
Mustafa Bugra A.
Nilufer, Turkey
$50/hr
5.0
3 jobs
As an experienced embedded software engineer, I specialize in developing innovative solutions for IoT devices and real-time systems. With a strong background in C/C++ programming, microcontroller architecture, and embedded Linux, I have successfully delivered projects that enhance device performance and reliability.
Key Skills:
Proficient in C/C++ programming
Extensive experience with microcontrollers (ARM Cortex, AVR, PIC)
Embedded Linux development
Real-time operating systems (RTOS)
IoT protocols and connectivity (MQTT, HTTP, BLE, Zigbee)
Hardware-software integration
Debugging and performance optimization
Professional Experience: I have collaborated with cross-functional teams to design and implement firmware for various applications, including smart home devices, industrial automation systems, and wearable technology. My approach involves thorough testing and validation to ensure seamless integration and functionality.
Why Choose Me: I am committed to delivering high-quality, efficient, and scalable embedded software solutions tailored to meet client-specific requirements. My problem-solving skills and attention to detail ensure that projects are completed on time and within budget.
Unit Testing
C++
Python
C
Embedded System
MSP430
Assembly Language
PIC
FreeRTOS
PCB Design
Make Build Script
Docker
MATLAB
Scripting
Mehmet I.
Istanbul, Turkey
$3/hr
5.0
5 jobs
Overview:
Looking for a Senior QA Engineer who doesn’t just find bugs, but actively prevents them?
I apply the 7 core software testing principles by prioritizing high-risk areas, shifting testing left (starting early), and continuously refining test cases to maximize defect detection. I don’t just execute tests; I analyze your specific business needs and customize the testing strategy to fit your project perfectly.
🌟 FEATURED PROJECT SPOTLIGHT: Emma3D Seemy CMDB
I served as the QA Engineer for the Emma3D Seemy CMDB (Configuration Management Database) project, a complex enterprise service management tool.
What I tested & delivered for this project:
• Data Integrity & Migration: Validated complex configuration items (CIs), relationships, and hierarchical data structures to ensure 100% data accuracy.
• API & Integration Testing: Tested seamless integrations between the CMDB and other ITSM tools, ensuring flawless data flow via REST APIs.
• Role-Based Access Control (RBAC): Conducted rigorous security and functional testing for complex user roles and permissions.
• Performance & Load Testing: Utilized JMeter to ensure the system handled massive data queries and concurrent user loads without latency.
• UI/UX & Workflow Testing: Validated complex visual data trees and service catalog workflows for optimal end-user experience.
💼 ABOUT ME & DOMAIN EXPERTISE
Senior Software Test Engineer with 10 years of experience delivering bug-free software across Banking, Logistics, Aviation, and IT Service Management domains.
• Core Skills: Test Automation (Java/Selenium/BDD), API Testing, CI/CD integration, and KPI-driven Performance Testing.
• Domain Experience: Online banking, CRM, logistics solutions, airport AMS/BRS systems, financial accounting, and enterprise SaaS.
• Versatility: Beyond enterprise apps, I also developed and QA-tested a psychological counseling web platform from scratch, giving me a strong full-lifecycle product mindset.
⚙️ MY QA WORKFLOW
1️⃣ Test Planning & Design: Analyze requirements, create comprehensive test strategies, and develop detailed manual & automation scripts (BDD/TDD).
2️⃣ Execution & CI/CD Integration: Run cross-browser/cross-platform tests, integrate automated suites into CI/CD pipelines, and perform deep exploratory testing.
3️⃣ Reporting & Continuous Improvement: Finalize testing based on strict exit criteria, deliver actionable defect reports, and conduct retrospectives to improve future cycles.
🛠 TOOLS & TECHNOLOGIES
✅ Testing Types: Functional, Non-Functional, Regression, Integration, System, UAT, Alpha/Beta, Exploratory, Smoke & Sanity, Mobile & Web.
✅ Automation & API: Java, Selenium, Appium, BDD (Cucumber, Gauge), Postman, REST Assured.
✅ Performance: JMeter, Loadium.
✅ Databases: Oracle, MS SQL.
✅ Management & CI/CD: Jira, Xray, TestRail, HPQC, Jenkins.
✅ Monitoring & Logs: Kibana, ELK Stack, SonarQube (Code Quality).
🏆 WHY CHOOSE ME?
💯 100% Job Success Score on Upwork.
🔍 Analytical Mindset: Strong attention to detail with a proactive approach to edge cases.
🤝 Leadership & Teamwork: Proven ability to mentor junior QAs, collaborate with devs, and drive Agile QA leadership.
I’d be happy to discuss your project requirements and contribute to making your software a success. Let’s schedule a quick chat!
Software QA
Java
Functional Testing
Regression Testing
Selenium
Test Execution
Mobile QA
Manual Testing
QA Automation
Bug Reports
Web Testing
End-to-End Testing
Test Case Design
Test Report
Test Automation Framework
Emre K.
Kayseri, Turkey
$22/hr
5.0
2 jobs
I build fast, responsive, and visually engaging web interfaces that delight users on any device. With extensive experience in React, Tailwind CSS, and modern animation libraries, I turn Figma designs into pixel-perfect production-ready code.
What I Can Do for You
Responsive Web Development – Mobile-first, cross-browser compatible layouts
React & Component Architecture – Clean, maintainable code with React Hooks and Context API
3D & Animation Integration – Fresh interfaces using Three.js, Framer Motion, or anime.js
Performance Optimization – Lazy loading, code splitting, and SEO-friendly markup
Why Work With Me
🚀 Delivery-Focused: Clear milestones, regular updates, and on-time delivery
🎨 Attention to Detail: Pixel-perfect UIs and consistent styling
🤝 Collaborative: Proactive communication and quick iterations
📈 Growth Mindset: Always learning—currently enhancing skills in Next.js and advanced animation techniques
Work Samples
Portfolio Website – Custom React site with interactive elements
Movie Discovery App – TMDB API-driven React/Redux SPA
Admin Dashboard – Tailwind CSS dashboard with dynamic charts
Let’s discuss how I can help bring your next project to life!
My Portfolio Site: emre-koc.com
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