Enthusiastic and self-driven Software Engineer with a robust background spanning over nine years in the industry. Demonstrating a keen passion for staying at the forefront of technology, I excel in leveraging cutting-edge development tools and methodologies. My proficiency extends across various platforms, languages, and systems, making me a versatile asset to any project. I am adept at seamlessly managing independent projects, showcasing my ability to self-motivate and deliver results. Equally, I thrive in collaborative team environments, contributing to the collective success of the projects I undertake. My expertise spans user interface development, testing methodologies, and efficient debugging processes. My diverse skill set encompasses a range of impressive projects and technologies, including but not limited to: - Backend & APIs: Node.js, TypeScript, NestJS, Go — REST and event-driven services, validation, auth, rate limiting - Frontend: Vue 2/3, React, Next.js (App Router), Quasar, Vite — responsive UIs and component architecture - Mobile: React Native, Ionic, Capacitor — cross-platform apps - Data & backend services: Postgres, MongoDB, Redis, Prisma, DynamoDB (including single-table design), Firebase — modeling, query patterns, and real-time/backend features - Infrastructure & ops: Docker, Podman, message queues (e.g. RabbitMQ, Kafka) — runnable, observable services - AI / LLMs: Custom integrations with LLM APIs (e.g. OpenAI, Anthropic), tool-augmented flows, and deterministic backend pipelines - Testing & automation: Extensive experience with testing and automation; I’ve built plugins and integrations for major JavaScript testing frameworks (Mocha, Cypress, Jest, Playwright, etc.) and care about reliable, maintainable test suites I’ve also worked with other languages, frameworks, and data stores and am comfortable picking up new tech when the project needs it. Committed to achieving optimal results, I bring a wealth of experience and a proactive approach to every endeavour. Ready to contribute my knowledge and expertise to elevate your projects.

I build and improve production software for businesses that need more than just code. I work across web, mobile, AI, backend, infrastructure, integrations, and automation. What I do: I take ownership of full stack products end to end: architecture, frontend, backend, databases, CI/CD, cloud deployments, monitoring, performance, debugging, and direct technical communication. I prefer working with a lean team. Typical tech stack (not all the tools I use) : Frontend: React, Next.js, TypeScript Mobile: React Native, Expo, EAS, iOS, Android. Backend: Node.js, NestJS, Express, Python, FastAPI, Rust Databases and ORM/tools: PostgreSQL, SQLite, MongoDB, Supabase, Prisma, Mongoose, SQLAlchemy, Alembic, Redis, BullMQ, RabbitMQ. AI/ML and automation: OpenAI APIs, Anthropic/Claude APIs , Langfuse, MCP tooling, Whisper, Hugging Face, Modal, Replicate, AI agents Cloud and infrastructure: AWS, Vercel, DigitalOcean, Modal, Docker, GitHub Actions, CI/CD pipelines Monitoring and analytics: Sentry, PostHog, OpenTelemetry, logging, product analytics Payments, auth, and integrations: Stripe, Xendit, Polar, Clerk, Firebase Auth, AWS Cognito, OAuth, Shopify, GoHighLevel Got a cool project? Send me a message and we can discuss if we're a good fit

⭐️⭐️⭐️⭐️⭐️ "Kanza is very well organized went above and beyond to deliver my project. She started the project by breaking down deliverables and setting up right expectations." 👩🏻‍🦱 Hi, I'm Kanza I am a UI/UX Designer with 9+ years of experience designing digital products. 👩🏽‍💻 Senior Product Designer 💼 9+ years of experience designing websites, web apps and mobile apps 🏆 Stellar client reviews. You get digital products that are beautiful, functional and good for business. I am UI UX Designer with over 9 years of experience designing impactful products, websites and brand identities. I enjoy the full process of design from user research, ideation and wire-framing to high-fidelity, clickable user-tested prototypes. I practice Human-Centered Design, and leverage battle-tested UX patterns and WCAG guidelines to design digital products that balance both business and user-needs. Working directly with founders, CEOs and cross-functional teams across time zones, has baked efficient collaboration into my DNA. My knowledge of front-end languages like HTML, CSS, JavaScript and Tailwind ensures that the products I design for you are developer friendly and easy to implement. ✅ I design end-to-end, customizing my process to the requirements of your product. ✅ Quick turn-around, and flexible on a timeline that works for your project. ✅ Full-service design: Brand, web, mobile and illustration. You shouldn't have to go through the hassle of finding different designers for each of your design needs. ✅ Figma-expert: 7+ years of working in Figma ensures that I'll work fast and efficiently, saving you precious time and money. ✅ Front-end: My understanding of front-end frameworks like HTML, CSS and Tailwind makes my designs developer friendly. ✅ Set your team up for success: I set up design and color systems and component libraries for consistent design and maintenance even after i'm off the project. INDUSTRIES: ✅ SaaS (B2B & B2C) ✅ Artificial Intelligence (AI/ML Interfaces, Chatbots) ✅ HealthTech & Digital Wellness ✅ Fintech & RegTech Solutions ✅ CleanTech & Sustainable Innovation ✅ EdTech & Online Learning Platforms ✅ Activity & Habit Tracking ✅ Spiritual & Mindfulness Apps ✅ Knowledge & Content Platforms ✅ Product Marketing & Growth Design SKILLS: 💼 Skills 💼 UX/UI Design 💼 UX Research & Strategy 💼 Mobile App Design (iOS & Android) 💼 Web App Design (Responsive, SaaS) 💼 Design Systems (Figma, Token-based) 💼 Wireframing & Prototyping 💼 Interaction Design & Microinteractions 💼 User Interviews & Usability Testing 💼 Conversational UI & AI-Driven Interfaces 💼 Dashboard & Data Visualization 💼 Accessibility (WCAG Compliance) 💼 User Onboarding & Engagement Flows 💼 Product-Led Growth Design 💼 Cross-Functional Collaboration AVAILABILITY ⏱️ Available Monday through Friday for work, available all week for work queries and work if necessary, because sometimes work is urgent and I get that. TIMEZONE ⏱️ AEDT (Sydney, Australia) 💌 Press the invite button at the top of my profile and let’s chat!

QA freelancer with a Master's in Computer Science. Among the top 1% of expert-vetted talents on Upwork. 15 years of QA experience. I worked on core products for companies such as Swiss Re, Thomson Reuters, VeriFone, and Wolters Kluwer. I am available 40+ hours per week in your time zone. My services include: • Testing of web, desktop, and mobile (Web, Native, Hybrid, and Progressive apps) products on all test levels (component, integration, system, acceptance) • Functional testing • Non-functional testing: - Usability: Accessibility: UI, UX testing - Compatibility: Cross-browser, Cross-platform, Hardware compatibility, Operating system compatibility, Network compatibility testing - Performance: Load, Stress, Scalability, Volume, Spike, Endurance testing - Reliability: Resilience, Fault Tolerance, Recovery testing - Security: Penetration, Vulnerability, Security policy, Security audit - Localization and Internationalization testing - Data integrity testing - Data availability testing - Installation testing - Configuration testing - Response time testing - Resource utilization testing - Memory leak testing - Power consumption testing - Interrupt testing - Portability testing - External system integration testing - Availability testing - Maintenance testing - Migration testing - Rollback testing - Transaction integrity testing - Documentation testing - Workflow testing • Change-related testing (Impact analysis, Re-testing, Confirmation testing, Integration testing, Regression testing, Smoke testing, User acceptance testing) • Automation testing (GUI, API, CI/CD) • Providing Documentation (Requirements, Test plans, Test strategies, Checklists, Test cases, Use cases, User stories, Test reports, Program and methods of testing, Traceability matrices, How-to and User guides) • Agile frameworks (Kanban, Scrum) installation and maintenance, including all responsibilities of Agile Coach and Scrum Master • QA Management (Pre-sale activities, Consulting, Auditing, Providing test strategies, Implementation of testing processes, Building QA departments from scratch, Team leadership, Resource allocation, Recruitment, Interviewing, Coaching, Mentoring, Resolving conflict situations, Motivation, Performance reviewing, Providing estimates and reports) • BA (Requirements elicitation; Mockups and prototypes creating; Acceptance criteria, BRD and FRD writing) List of tools: • Operating Systems: macOS, Ubuntu, Windows, Android, iOS • Bug Tracking Systems, Dashboards, Test Case Management Tools: ClickUp, Google docs, JIRA, Micro Focus Quality Center, monday, Notion, Qase, Redmine, Smartsheet, TestRail, Tosca, Trello, VSTS, YouTrack, Zenhub, Zephyr for Jira • Agile: Miro, Parabol, PlanningPokerOnline • Design: Adobe XD, Figma, InVision App, Zeplin • Automation testing: Android Studio, Appium, Selenium, REST Assured, Allure, Docker, Serenity BDD, JUnit, IntelliJ IDEA, Eclipse IDE, WebStorm, Gradle, Maven, Bitbucket, GitHub, GitLab, SourceTree, CircleCI, Jenkins, TeamCity, JMeter, Tomcat, Autoit, T-Plan Robot, BrowserStack • Mobile Testing: Bitrise, Firebase Crashlytics, Genymotion, Google Analytics, HockeyApp, InstallOnAir, OpenStf, Pgyer, TestFlight, Urban Airship, Vysor, Xcode, Yarn • API: APIMatic, Postman, Swagger • Browsers and Plugins: Chrome, Chrome Remote Desktop, DevTools, Lighthouse, Internet Explorer, Microsoft Edge, Mozilla Firefox, Omnibug, Opera, Safari, UC Browser, WhatFont • Communication: Email services, DingTalk, Discord, Google Chat, Google Hangouts Meet, Microsoft Teams, Rocket Chat, Skype, Slack, Whereby, X Spaces, Zoom • DB: Compass, Oracle SQL Developer • VPN and Proxy: Browsec, Charles Proxy, Cisco AnyConnect, Fiddler, Pulse Secure • Blockchain: Binance, BRD, Bybit, Currencycom, Electrum, Enjin Wallet, Ganache, Hardhat, Kraken, Metamask, MEXC, OKX, OpenSea, Poloniex, Remix, SkyHarbor, Truffle, Trust Wallet, Uniswap • Recording: Jam, Gyazo Pro, LightShot, Loom, Nimbus Capture • Others: AnyDesk, Azure, CallHippo, Cawemo, Confluence, Diagrams, Dropbox, Gamma, Helpshift, Hubstaff, Lightroom, Mailpit, MS Office, OBS Studio, OpenAI, PuTTY, Photoshop, TeamViewer, TempMail, Upwork, Virtual machines, WordPress, Wowza, XMind Hardware and park of mobile devices: • iOS: iPhone 16, iPhone 13 Pro, iPhone 13, iPhone 12 Mini, iPhone Xs Max, iPhone 6 • Android: Samsung Galaxy M01 with Android 10, Xiaomi Redmi 9A with Android 10 • Desktop: Windows and macOS Note: Testing can be provided on any devices out of the list at your request

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.

Secure Microsoft 365. Protect client data. Know what to fix first. I help compliance-sensitive small and midsize businesses assess, harden, and manage their Microsoft 365 environments. As the Founder and lead security architect at Decoded Clouds, I combine more than 20 years of cloud architecture, software engineering, and security experience with hands-on expertise across Microsoft 365, Entra ID, Intune, Defender, Exchange Online, Teams, SharePoint, and OneDrive. MICROSOFT 365 SECURITY ASSESSMENTS Not sure where your biggest Microsoft 365 risks are? I provide an independent, expert-reviewed assessment of your environment using recognized Microsoft security practices and CIS Benchmark guidance. You receive: • An executive security summary and posture overview • Prioritized findings with business impact • Recommended actions and practical quick wins • A 30/60/90-day remediation roadmap • A final report and findings review meeting The assessment covers key areas such as: • Identity, MFA, Conditional Access, and privileged access • Email security, phishing protection, and domain safeguards • Teams, SharePoint, OneDrive, guest access, and sharing • Microsoft Defender, Intune, audit logging, and data protection • Applications, licensing, and tenant security configuration ADDITIONAL SERVICES • Microsoft 365 and Intune security hardening • Entra ID, Conditional Access, MFA, and identity protection • Microsoft Defender and email security • Security-focused managed Microsoft 365 services • vCISO and compliance advisory • Secure AI adoption and governance WHY WORK WITH ME? • $200K+ earned across 48 Upwork engagements • 100% Job Success Score and Top Rated status • More than 20 years of technical experience • Clear communication for both executives and technical teams • Practical recommendations prioritized by risk and business impact • Fixed-scope projects with defined deliverables and expectations Whether you are responding to an insurance or compliance requirement, concerned about account compromise, or simply need an independent review of your Microsoft 365 environment, I can help you understand the risk and decide what to address first.

I am an Android engineer focused on digital accessibility and Jetpack Compose. My expertise lies in creating inclusive and innovative applications that enhance user experiences. I authored "Android Accessibility by Tutorials" and co-authored "Android Test-Driven Development by Tutorials," sharing my knowledge through deep technical tutorials on Kotlin and Android development. With a background in technical editing, I excel at reviewing content to ensure quality code and clear communication of concepts. I thrive in collaborative environments, offering valuable feedback and guiding teams throughout the publishing process. If you're looking for a developer who can make a meaningful impact on your Android project, I would love to discuss how my skills can help you achieve your goals.

Are you looking for your jack of all trades that can do literally anything with WordPress? You found him! When you hire me, you'll get someone who: ≫Designs and develops custom-tailored WordPress Websites ≫Provides back-end support for any size application ≫Delivers results in a professional and timely fashion I'm an experienced WordPress Developer that can design & develop any WordPress website, make a multi-vendor WooCommerce Marketplace, turn a standard WordPress install into a SaaS business, customize plugins, use Azure B2B authentication to your WordPress site, and more! I'm eager to work with you to provide reliable, consistent, and high-level solutions to any design/development challenges. I have built over 100 WordPress websites that have a variety of functions and needs. I also manage over 200 websites through WPMU DEV Hub platform. I am an all-in-one solution to handle your project and develop whatever you need using the latest technologies. Technical Skills: ✅ Wordpress/WordPress Security ✅ WordPress Maintenance ✅ Elementor/Divi ✅ WooCommerce ✅ MySQL ✅ HTML/CSS ✅ Java/JavaScript/PHP ✅ Website Migrations & DNS I look forward to speaking with you!

I help teams ship stable, high-quality products without last-minute surprises or production issues. I am a Senior QA Engineer with 6+ years of experience working with startups and fast-moving product teams. I focus on more than just testing. I build QA processes that catch issues early, reduce risk, and improve release confidence. 🚀 What I Do Own QA from test planning through execution and reporting Manual and exploratory testing across mobile, tablet, and web Regression and smoke testing to protect core functionality Cross-device validation on real devices, not just simulators API testing with Postman Clear, reproducible bug reports that developers can act on Test case design and structured QA documentation Where I Add Value: Most teams do not need more testing. They need better QA structure. I help by: Turning requirements into clear, testable workflows Catching edge cases before they reach users Identifying patterns across issues, not just logging bugs Helping teams ship faster with confidence 🛠 Tools JIRA, Notion, Slack, Postman, Selenium, real device testing, Agile environments 💬 What You Can Expect Clear communication Fast ramp-up High-quality bug reports A QA partner who can take ownership If you need someone who can own QA and improve your process, let’s connect.

⚡ High-Velocity Developer | 100% Success Rate Need results yesterday? I specialize in rapid, high-quality development powered by 15+ years of expertise and modern AI-assisted workflows. I combine the seasoned intuition of a veteran developer with the speed of today’s best tech. Proven: 100% Job Success Score. Fast: Optimized delivery cycles. Smart: Deep AI integration to 10x productivity and feature set. My technical expertise is extensive, encompassing PHP, Symfony / Laravel Framework, MySQL, and noSQL Databases (MongoDB, Redis). I'm proficient in node.js (socket IO framework, express), and JavaScript (Stencil JS, Ionic, React), and have built APIs using common architectures such as REST and GraphQL. Additionally, I bring to the table experience in managing AWS infrastructure and other servers based on the Linux Operating System specifically for hosting PHP / Symfony projects. My portfolio also includes building HTML mobile apps (Hybrid apps in frameworks like Ionic/Cordova). I’ve worked across a range of industries, including e-commerce, affiliate marketing, real estate, automotive, aviation, courier services, and healthcare. I have very good knowledge of Symfony Components, Doctrine ORM, PSR standards. I have also used across various projects Easy Admin, API Platform, DomPDF, Guzzle, SwiftMailer, Contao CMS and Amazon SP-API libraries. I have experience working with big data solutions - BigQuery, Adverity Datatap, building continuous cost-effective scraping solution and reliable process automations using make com (formerly integromat) Particularly, my most recent projects have been centered around the Symfony framework, granting me continuous and profound expertise in the Symfony / PHP ecosystem. My grasp of software development techniques is solid, including writing clean and secure code, object-oriented development, and designing application architecture with a focus on extensibility and scalability. I have recent experience in building projects that integrate AI features through the OpenAI / Fal APIs. For some significant period of time i was reponsible for building and maintaining shopify websites, including building custom theme, plugins that were enriching logically Shopify and also checkout cusotmisations Beyond just development, I make it a point to grasp a thorough understanding of the entire project from the end user's perspective. My years of experience enable me to provide accurate insights and advice on enhancing your project. What excites me most is problem-solving. I thrive on unraveling complex, challenging issues, and the software industry continually nurtures my knowledge and creativity. I'm also a fan of machine learning, possessing experience in Octave and the R language, along with theoretical knowledge in machine learning techniques. Recently, I have gained experience in building apps utilizing OpenAI APIs, further broadening my skill set. I take pride in being a versatile “one-man army” in Full Stack Development, capable of delivering fast, reliable results. My goal is to handle all your development needs efficiently - so you can stay focused, worry-free. I'm on the lookout for new challenges. If you're interested in working with me, I'd be eager to discuss how I can contribute to your project. Paweł