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🏆 Top Rated Plus Freelancer | 100% Job Success | 200+ Projects Completed | 9,700+ Hours Worked | $200K+ Earned I am a Senior QA Engineer specializing in SaaS, FinTech, and AI-powered applications, helping startups and enterprises deliver stable, secure, and high-performance software products through structured manual and automation testing. I work as a QA Engineering specialist for SaaS startups, FinTech platforms, and AI product teams, ensuring applications are reliable, scalable, and ready for production at enterprise quality standards. My focus is on improving product quality, reducing production defects, and building efficient QA processes that support fast and safe software releases. 🟦 QA Engineering & Software Testing Services I provide end-to-end Software QA and Quality Assurance services, including: QA strategy, test planning, and test case design Manual Testing (functional, regression, exploratory) Cross-browser and cross-device testing Bug reporting, tracking, and test documentation Performance testing (Apache JMeter) API Testing (Postman, REST API validation) Security Audits (OWASP ZAP) Automation Testing (Cypress, Playwright, Appium, Espresso) CI/CD pipeline integration for automated testing End-to-end software quality assurance 🟦 SaaS Application Testing I specialize in testing complex SaaS platforms and web applications, including: Multi-tenant SaaS systems Subscription and billing workflows User roles and permission systems Dashboard and analytics platforms Third-party API integrations I help SaaS companies improve reliability, user experience, and release confidence while reducing production issues. 🟦 FinTech Application Testing I test financial and payment-based systems with a strong focus on accuracy, security, and reliability: Payment gateway testing Transaction and wallet systems Banking and financial dashboards Data integrity and validation testing End-to-end financial workflow testing I ensure every financial operation is secure, accurate, and production-ready. 🟦 AI SaaS & LLM Application Testing I also specialize in AI-powered SaaS and LLM-based applications, including: AI chatbots and conversational systems LLM-based workflows and applications Prompt-response validation and testing AI output accuracy and consistency checks Behavioral testing of AI systems under real-world usage I ensure AI systems behave reliably, safely, and predictably in production environments. 🟦 Tools & Technologies Automation: Selenium, Cypress, Playwright, Appium, Espresso API & Performance Testing: Postman, JMeter, REST APIs CI/CD: Jenkins, GitHub Actions Security Audits: OWASP ZAP Bug Tracking: Slack, Linear, Jira, Trello, Asana Test Management: TestRail, Confluence, Excel frameworks 🟦 Why Work With Me Strong expertise in SaaS, FinTech, and AI QA systems Skilled in both manual and automation testing Ability to build scalable QA frameworks from scratch Focus on real product stability and business outcomes Experience working with fast-paced startup environments If you are looking for a Senior QA Engineer for SaaS, FinTech, or AI applications, I can help you build a reliable QA process that improves product quality and reduces production risk.

Software quality is more than finding bugs—it's about delivering products that users trust and businesses can confidently scale. As a Software Quality Assurance Engineer, I specialize in end-to-end testing for web, mobile, SaaS, enterprise, and AI-powered applications. I help startups, software companies, and product teams improve release quality, reduce production defects, and accelerate delivery through structured testing strategies and automation. Quality Assurance should be integrated throughout the software development lifecycle—not treated as a final checkpoint. By collaborating closely with developers, product managers, and designers, I ensure every feature meets functional requirements, delivers an exceptional user experience, and performs reliably in production. Core Services ✔ Manual Testing Functional Testing Regression Testing Exploratory Testing Smoke & Sanity Testing User Acceptance Testing (UAT) UI/UX Testing Cross-Browser Testing Cross-Platform Testing Mobile Application Testing Compatibility Testing ✔ Test Automation Designing scalable and maintainable automation frameworks to improve efficiency and release confidence. Frameworks & Tools Selenium WebDriver Playwright Cypress Appium ✔ API Testing REST API Testing API Automation Postman REST Assured Request & Response Validation Authentication & Authorization Testing Database Validation ✔ Performance Testing Apache JMeter Load Testing Stress Testing Performance Benchmarking ✔ AI Application Testing Supporting the quality of modern AI-powered applications by testing: ChatGPT & OpenAI integrations AI Chatbots Prompt Validation LLM Response Evaluation AI Workflow Testing AI Feature Validation Tools & Technologies Automation: Selenium, Playwright, Cypress, Appium API: Postman, REST Assured Performance: Apache JMeter Project Management: Jira, Azure DevOps, Trello, ClickUp Version Control: Git, GitHub, Bitbucket Databases: MySQL, PostgreSQL QA Process Requirement Analysis Test Planning & Strategy Test Case Design Manual Test Execution Automation Development Defect Reporting & Verification Regression Testing Release Validation Continuous Quality Improvement What You Can Expect Thorough testing with attention to detail Clear, reproducible bug reports Effective communication throughout the project On-time delivery and dependable support Seamless collaboration within Agile teams A proactive approach focused on preventing defects, not just finding them Whether you're launching a new MVP, scaling a SaaS platform, modernizing an enterprise system, or validating an AI-powered application, the goal remains the same: deliver stable, secure, high-performing software that provides an outstanding user experience. If you're looking for a QA professional who takes ownership of product quality, communicates effectively, and contributes to successful software releases, let's discuss how I can help bring confidence to your development process.

I am a detail-oriented freelancer with strong skills in Data Entry, Virtual Assistance, and Administrative Support. I am experienced in handling data accurately, managing spreadsheets, performing internet research, and supporting day-to-day business operations with efficiency and reliability. I am committed to delivering high-quality, error-free work within deadlines. My skills include data entry, data cleaning, transcription, file organization, email handling, scheduling, and basic project support. I also have experience in QA testing and data management tasks, ensuring accuracy and consistency in all work. In addition to my support skills, I have a background in Computer Science and experience in web development using technologies such as Next.js and Laravel. I have also worked on software projects and research in Natural Language Processing, which has strengthened my analytical and problem-solving abilities. I am highly adaptable, quick to learn new tools, and focused on providing efficient support to help clients manage their workload smoothly. I aim to build long-term professional relationships by delivering reliable and quality work.

⭕Super-fast 'Premium' Services⭕ ⭕ WordPress Developer ⭕ Elementor Pro ⭕ Malware Removal ⭕ Website Security ⭕ Speed Optimization ⭕ Troubleshooting ⭕ Backup & Migration ⭕Google Ads ⭕ CloudFlare ⭕ DNS Setup ⭕Contact Form Issues ⭕ Bot Protection ⭕Domain Blacklist Removal⭕ I’m Nakib Estiak Mahmud — a Top Rated WordPress Developer with 100% Job Success. Expert in Malware Removal, Speed Optimisation, Troubleshooting, and AWS Cybersecurity. I help clients secure, optimise, and fix WordPress websites fast and reliably. I specialise in helping businesses, bloggers, eCommerce stores, and enterprises build, secure, and optimise WordPress websites that are fast, reliable, and resilient. My expertise spans custom WordPress development, responsive web design, high-converting landing pages, website speed optimisation, malware removal, and AWS-based cybersecurity solutions. With over 4 years of hands-on experience, I can help. Whether your site is slow, affected by malware, experiencing technical errors, or in need of optimisation for Google Core Web Vitals and SEO, I provide expert solutions tailored to your needs. 🔧 My Key WordPress & Cybersecurity Services Include: ⭕ WordPress Malware Removal & Security : ✅ Malware Removal – Hacked site cleanup, injected script removal, backdoor fixes ✅ WordPress Security Hardening – Firewall setup, plugin & theme security, server-level protection ✅ Emergency Malware Cleanup & Recovery ✅ Penetration Testing & Vulnerability Assessment ✅ Ongoing Security Monitoring & Maintenance ✅ AWS Cybersecurity Solutions – Cloud security, server hardening, threat detection, and prevention ✅ Linux Server Security ✅ Website Security Audit ⭕ Website Speed & Performance Optimization : ✅ Core Web Vitals Optimisation – LCP, FID, CLS improvements ✅ WordPress Speed Optimisation – Caching setup, database optimisation, plugin/theme performance tuning ✅ Image Optimisation – Zstandard (Zstd), WebP compression, lazy loading, polish, compression for faster load times ✅ Minification & Compression – HTML, CSS, JS, GZIP/Brotli/Zstd ✅ CDN Integration – Cloudflare, BunnyCDN, StackPath, RocketCDN, for global performance ⭕ CloudFlare Setup ✅ Cloudflare setup and optimisation ✅ Optimise site for Super Speed ✅ Best Caching rules Setup ✅ Extraordinary Security rules setup ✅ Compression rules setup for super fast loading ✅ Bot Protection Setup ✅ DDoS Protection ✅ WAF Setup ✅ Hacking prevention ✅ Website file safety / Database protection ✅ Add Cloudflare to WordPress Website ✅ 100+ Custom Rules ✅ Automatic Platform Optimisation for WordPress ⭕ Backup and Migration ✅ Secure WordPress Website Migration, Backup & Restore Services ✅ Hosting Transfer ✅ Zero downtime ✅ No Dataloss ✅ DNS Transfer ✅ Email setup on new hosting ✅ MX Record Setup ⭕ Troubleshooting & Email Deliverability : ✅ Fix WordPress Errors – Broken functionality, plugin conflicts, theme issues ✅ Contact Form Troubleshooting – Contact Form 7, WPForms, Gravity Forms ✅ SMTP Configuration – Gmail, Outlook, Zoho, SendGrid, Amazon SES ✅ DNS & Email Authentication Setup – SPF, DKIM, DMARC, MX Records ✅ Reliable Email Deliverability – Ensure messages reach the inbox without spam issues ✅ Emergency Technical Support – Website downtime fixes, database recovery, server errors ⭕ Google Ads Services : ✅ Fix Disapproved Ads – Resolve Compromised website, Malicious Software, Virus Issues ✅ Ad Disapproval Troubleshooting – Get your suspended or rejected ads approved fast ✅ Recover Rejected Ads – Compliance checks, re-submission & approval support ⭕ Other Professional Services : ✅ Ongoing Monthly WordPress Maintenance & Support ⭕ I specialise in working with all major hosting providers, including: ✅ Hostinger ✅ Bluehost ✅ SiteGround ✅ GoDaddy ✅ Contabo ✅ HostGator ✅ Namecheap ✅ Cloudways ✅ DigitalOcean ✅ IONOS by 1&1 ✅ Flywheel I am deeply passionate about helping clients maximise website performance, enhance security, troubleshoot complex WordPress issues, and optimise user experience. My mission is to deliver WordPress websites that are fast, secure, and fully functional, providing both technical excellence and peace of mind. I utilise industry-standard tools and best practices, including Wordfence, Sucuri, iThemes Security, WP Rocket, LiteSpeed Cache, GTmetrix, Google PageSpeed Insights, Mail-tester, MXToolbox, Cloudflare, AWS Security tools, and more, to ensure that every site I work on is high-performing, fully secure, and reliable. Whether you need WordPress speed optimisation, malware cleanup, troubleshooting technical issues, email deliverability setup, or AWS-based cloud security, I provide fast, professional, and long-lasting solutions. Let’s collaborate to bring your vision to life — fast, secure, and pixel-perfect. Your website deserves top performance, reliable security, and a seamless user experience, and I’m here to make that happen. Thanks for considering my services! Best regards, Nakib Estiak Mahmud WordPress Expert & Cybersecurity Specialist

✅ "Expert QA Engineer with 6+ years of experience in Playwright, Selenium, Cypress, and API testing – helping startups and enterprises release bug-free products faster." QA Engineer with 6+ years of expertise in both Automation and Manual Testing, delivering end-to-end quality assurance for web, mobile, and API applications. Proficient in designing scalable automation frameworks (Playwright, Selenium, Cypress.io, Appium) while excelling in manual testing to uncover edge cases and optimise user experience. Combines technical mastery (Java, JavaScript, TypeScript, CI/CD pipelines) with meticulous manual testing skills to accelerate releases, reduce defects, and align software with business goals in Agile environments. 𝐂𝐨𝐫𝐞 𝐂𝐨𝐦𝐩𝐞𝐭𝐞𝐧𝐜𝐢𝐞𝐬 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐄𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞: Frameworks: Selenium/Java (TestNG/Maven), Cypress.io, Playwright, Appium for mobile. Tools: RestAssured, Postman, JMeter, Gatling, TestRail, Jira. CI/CD Integration: Jenkins, GitHub Actions, Azure DevOps. Testing Types: API (REST), Performance, Cross-Browser (BrowserStack), Mobile (iOS/Android). Results: Reduced regression cycles by 70%, achieved 95 %+ test coverage, and validated 500+ API endpoints for Fortune 500 clients. 𝐌𝐚𝐧𝐮𝐚𝐥 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐓𝐲𝐩𝐞𝐬: Functional, Regression, Smoke, Sanity, UAT, Usability, Exploratory. 𝐓𝐨𝐨𝐥𝐬: Postman (API), Jira, Trello, Confluence, BrowserStack. 𝐃𝐨𝐜𝐮𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧: Test plans, cases, defect reports with screenshots/logs. 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧: Agile/Scrum workflows, sprint planning, defect triaging. 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬 Languages: Java, JavaScript, TypeScript, SQL, Node.js Frontend/Backend Testing: HTML5, CSS3, Java, Node.js Databases: MySQL, PostgreSQL OS/Devices: Windows, macOS, Android/iOS (real devices & emulators) 𝐊𝐞𝐲 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐌𝐚𝐧𝐮𝐚𝐥 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: ✅ Built Selenium/Java frameworks for enterprise web apps, slashing regression testing time by 70%. ✅ Intensive experience in creating test automation suite on Cypress, Playwright using JavaScript & Typescript. ✅ Automated mobile testing via Appium + BrowserStack, ensuring 100% real-device coverage. ✅ Integrated automated tests into CI/CD pipelines (Jenkins/GitHub Actions), enabling shift-left testing. ✅ Conducted load tests with JMeter, scaling SaaS platforms to handle 10k+ concurrent users. ✅ Spearheaded UI/UX testing for 20+ web/mobile apps, reducing post-release defects by 40%. ✅ Authored thousands of test cases and defect reports, improving team efficiency and reproducibility. ✅ Championed user-centric testing, enhancing product intuitiveness for client applications. 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞❓ ✅ Bridge automation efficiency with manual testing precision for comprehensive coverage. ✅ Cut costs via early defect detection and accelerated release cycles. ✅ Collaborate seamlessly with developers, PMs, and stakeholders to meet sprint goals. ✅ Uncover edge cases through exploratory testing and rigorous documentation. ✅ Prioritise real-world scenarios to ensure software stability and usability. 𝐋𝐞𝐭’𝐬 𝐂𝐨𝐧𝐧𝐞𝐜𝐭❗ Whether automating tests for rapid scalability or conducting hands-on manual testing to refine user experience, I ensure your software meets the highest standards. Let’s enhance quality, accelerate releases, and deliver exceptional ROI. 𝐂𝐨𝐧𝐭𝐚𝐜𝐭 𝐦𝐞 𝐭𝐨𝐝𝐚𝐲 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭❗

Salam, my name is Md Hasib Un Nabi Schneho, a Web Security Specialist with expertise in Python, PHP, and Penetration Testing. I help businesses secure their web applications by identifying vulnerabilities, fixing security issues, and implementing strong security controls. My experience includes working with Django, Laravel, WordPress, and REST APIs, performing comprehensive security assessments, vulnerability remediation, and post-incident recovery. I am skilled in detecting and fixing common web vulnerabilities such as SQL Injection (SQLi), Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and authentication flaws. Technical Proficiency Tests in Cybersecurity and penetration. - Web Application and API Penetration Testing in general. - Vulnerabilities SQL Injection (SQLi), Cross-Site Scripting (XSS), Cross-site Request Forgery (CSRF), Authentication Problems - Security Testing Tools Burp Suite, Nmap, Metasploit, Wireshark. - Environment: Kali Linux, Windows, MAC - Secure Development: Preventing attack right in the application code. Software development (Security-centered). - Back End Python (Django, Django rest framework), PHP (Larval). - Front-end: HTML, CSS, JavaScript, Bootstrap, Tailwind CSS. - Database systems MySQL, postgreSQL, SQLite. - APIs: API design and development (Secure REST API design and development). - Version Control: Git, GitHub - Implementation Linux-based/windows-based systems. Key Strengths - Web application vulnerability fix and security. - Bypass security test in Django, Laravel and WordPress. - Protective API development and testing. - Performing tests on bugs and optimization. - Recovery and protection of hacked websites. Why Choose Me I have a special advantage: I do not only identify weaknesses, I restore them. Numerous penetration testers merely make reports. I even recognize the actual threats to your security and how they could affect you, correcting the flaws in your code, and how to make your application more resistant to such in the future. Clients regard useful and safe or stable solutions which is what I provide. Let's Work Together You require security audit on your application, vulnerability remedies, or post attack RCA, I will be glad to assist you. Get in touch with me on your project.