Hire Top Freelance Test Automation Developers

Alireza Esmaeili

* 15+ years of experience in software development. * 7 years of building apps with NodeJS, React and Angular. * 5 years of hands-on work with cloud-based. * Solid background in computer science and software development. * Proficient in important practices like Clean Code, Refactoring, Test Automation, and CI/CD. * Exceptional at solving problems and learning new technologies quickly.

Carlos Aguilar

I’m a senior mobile + backend engineer with 20+ years in software (PHP since 2002; professional since 2005) and 10+ years building mobile apps. I help teams ship and stabilize real products—especially apps that are “almost done” but stuck on crashes, performance, flaky networking, or release blockers. What I can help you with (fast, practical): • iOS (Swift, SwiftUI, UIKit): crash fixes, performance/memory, concurrency issues, architecture cleanup • Flutter (iOS/Android/macOS): reliability, state consistency, networking/retry behavior, release readiness • Backend stability (PHP/Laravel or custom, Python/Django, Rails): idempotency, queues, DB performance, webhook safety • Firebase + mobile reliability: Auth/Firestore rules, Cloud Functions patterns, analytics/instrumentation • Monetization + shipping: RevenueCat/IAP reliability, App Store Connect/Play Console, CI/CD, rejection handling Recent work includes taking a messy iOS codebase (CakeClub) to production-ready with a Firebase Cloud Functions v2 backend, stronger security patterns, CI/release automation, and RevenueCat integration; and delivering major cross-platform Flutter work (BillBlaster) including design refinements, admin tooling, and push notification features. If you come with logs/screenshots (Crashlytics traces, network errors, repro steps), I’ll give you a clear diagnosis and a prioritized fix plan—and if it makes sense, I can execute the fixes as a focused sprint.

Jose Antonio Such Llinas

Hi everyone! I am a Software and QA Architect with a strong background on designing, developing and testing complex applications. Currently, I am the Head of QA of an insurtech company, which is a really exciting sector inside the software development industry. In my daily basis I perform both Software and QA Leadership tasks as well Software And Automation Architecturing, as well as designing Unit tests, Integration, and so on. My main goal is to help organizations and individuals to achieve the maximum level of quality in terms of development and automated testing.

Olamiji Kareem

A full-stack developer with extensive experience developing web applications. I have extensive knowledge in: * Programming languages * Frameworks * Databases * Algorithms * Version Control (Git,etc) * Designs, and best coding practices. If you're looking for an experienced software engineer with a passion for problem-solving and creating quality solutions, please get in touch. Cheers to the bugs solved, and to the ones we're about to solve.

Guillaume Faas

Building software has always been a passion of mine. This is still true after almost 15 years of experience in various environments and business sectors. I've never really considered it work but "problems to solve". Yes, I love puzzles or anything that requires you to turn your head around. Passion also means curiosity and hunger for knowledge. I regularly read blogs, articles, and books and practice katas by myself. Some of my favourite authors are Robert C. Martin (aka Uncle Bob) and Mark Seemann. Continuous improvement is a mindset I consider essential. If I had to pick one priority when building a product, I would choose quality. This has always been what I put first. I'm not satisfied when "It Works", it must also be done well. I always tried to improve the team I joined wherever I've been. Whether by providing experience, a fresh eye, ideas, or mentoring younger peers. About mentoring, sharing knowledge represents a key aspect of my participation in a team. I do believe that knowledge is useless if you keep it to yourself. We need to use our knowledge to teach and inspire others, the same way others have inspired us. Putting this all together, it’s quite clear I advocate Software Craftsmanship. Hearing about this ideology for the first time has been one of the biggest milestones in my career. It is the perfect match for what I consider important in terms of mindset. Since then, I’ve continuously tried to spread the ideology by sharing ideas and methodologies. Feel free to take a look at my GitHub account: https://github.com/Tr00d You'll find katas I do for fun or coaching purposes, but you'll mostly see how I code.

Paul Stewart

PAUL STEWART ============ Portland, OR +1 (617) 697-4119 | paul@arckinteractive.com | LinkedIn Available Upon Request SUMMARY ------- Technology leader with 20+ years of experience spanning enterprise IT infrastructure, secure cloud architecture, software development, and regulatory compliance. Cyber AB Registered Practitioner (RP) and Director of Cybersecurity Compliance with hands-on expertise in Microsoft 365 GCC High, Azure, identity governance, endpoint lifecycle management, and secure enclave design. Proven ability to lead cross-functional engineering teams, modernize infrastructure, deliver SaaS platforms, and translate complex compliance requirements (CMMC, NIST SP 800-171, HIPAA, SOC 2, FISMA) into operationally sustainable technical solutions. Equally comfortable operating at the executive strategy level and in hands-on technical implementation. CORE COMPETENCIES ----------------- • IT Infrastructure & Operations Leadership • Microsoft 365 E5 Administration & Licensing Governance • Azure & Hybrid Cloud Architecture • Identity & Access Management (Entra ID / Azure AD / MFA / Conditional Access) • Intune Endpoint Lifecycle Management & Patch Governance • Secure Enclave & Network Segmentation Design • Cybersecurity & Regulatory Compliance (CMMC L2, NIST 800-171, HIPAA, SOC 2, FISMA) • Full-Stack SaaS Architecture & Systems Integration • DevOps & Infrastructure as Code (CI/CD, Docker, Cloud Automation) • Risk, Issue & Change Management • Executive Advisory & Stakeholder Communication • Agile & Hybrid Delivery (Scrum, Kanban, PMI) PROFESSIONAL EXPERIENCE ----------------------- ### FNI, INC. **Director of Cybersecurity Compliance | Cyber AB Registered Practitioner** Nov 2025 – Present | Tigard, OR Lead CMMC Level 2 implementation and secure infrastructure operations within Microsoft GCC High environments, integrating identity, endpoint, logging, and compliance governance into scalable enterprise architectures. • Own operational security posture of Microsoft 365 GCC High enclave including Entra ID, Conditional Access, Intune compliance baselines, Defender, and Sentinel logging configurations. • Lead identity-first Zero Trust architecture, enforcing MFA, device compliance gating, privileged role governance, and separation of duties controls. • Oversee endpoint lifecycle management, patch governance, secure configuration standards, and application control policies. • Define and optimize CUI system boundaries, network segmentation, VLAN isolation, and air-gapped containment strategies for legacy systems. • Author and maintain SSPs, POA&Ms, and objective-level evidence (320 assessment objectives) aligned to NIST SP 800-171 and CMMC Level 2. • Coordinate cross-functional engineering and MSSP teams to meet aggressive remediation and certification timelines. • Serve as executive advisor on regulatory interpretation, risk posture, and secure infrastructure strategy. ### ARCK INTERACTIVE, INC. **Founder & CTO** September 2010 – Present Founded and scaled a full-stack digital product and infrastructure consultancy serving healthcare, nonprofit, education, and enterprise SaaS clients. Directed the full lifecycle of infrastructure modernization and secure platform development initiatives. • Designed and implemented Microsoft 365, Azure, and AWS cloud environments supporting distributed teams and regulated workloads. • Led migrations from on-premises infrastructure to hybrid and cloud-first architectures. • Managed identity governance, endpoint security, licensing strategy, and operational security baselines across client environments. • Oversaw DevOps automation pipelines (CI/CD, containerization, Infrastructure as Code) to support secure, repeatable deployments. • Established governance frameworks, risk registers, and communication plans ensuring consistent delivery across multimillion-dollar programs. • Delivered 100+ SaaS and digital transformation projects on time and within budget, including system integrations for The World Bank, University of Alaska, and John Wiley & Sons. • Ensured compliance with SOC 2, HIPAA, ADA, FERPA, and related regulatory standards through structured audit documentation and QA controls. ### CHENEGA CORPORATION (U.S. Department of Transportation) **Senior Full-Stack Developer / Federal Solutions Architect** August 2005 – August 2010 Led design and delivery of secure federal systems operating under FISMA and NIST 800-53 controls. • Architected and delivered national-scale compliance platforms (SAMO, RISC) within high-assurance federal environments. • Developed project charters, scope definitions, and detailed work breakdown structures for multi-team development efforts. • Managed risk assessments, mitigation strategies, and audit readiness in coordination with federal oversight bodies. • Introduced early CI/CD automation and governance dashboards to improve delivery efficiency and compliance visibility. • Transitioned teams from waterfall to Agile methodologies while preserving federal reporting requirements. ### TUFTS MEDICAL CENTER (Perot Systems) **Web Developer / Application Analyst** March 2002 – August 2005 • Designed and implemented a HIPAA-compliant .NET-based CMS supporting 85+ hospital departments with role-based access control (RBAC). • Integrated Lawson ERP and EHR systems to eliminate manual reconciliation and improve data integrity. • Directed stakeholder workshops, requirements analysis, and QA testing aligned with healthcare compliance standards. ### TUFTS MEDICAL CENTER (Lifespan Inc.) **Project Lead / Applications Analyst** January 1999 – March 2002 • Standardized enterprise workstation builds and Active Directory provisioning across 1,000+ endpoints. • Led rollout of remote access and network security policies. • Partnered with clinical leadership to improve SLA performance and implement structured change management. TECHNICAL TOOLKIT ----------------- **Cloud & Infrastructure:** Microsoft 365 GCC High, Azure Government, Azure AD / Entra ID, AWS, GCP, Docker, CI/CD Pipelines, Infrastructure as Code **Endpoint & Security:** Microsoft Intune, Microsoft Defender, Microsoft Sentinel, Conditional Access, MFA, RBAC, Secure Baselines **Development:** .NET, Node.js, Python, PHP, Laravel, JavaScript, TypeScript, React, Vue.js **Data & Integration:** REST APIs, GraphQL, HL7, FHIR, OAuth2, SSO, MySQL, PostgreSQL, MongoDB, Elasticsearch **Governance & Compliance:** CMMC Level 2, NIST SP 800-171, NIST 800-53, FISMA, HIPAA, SOC 2, FERPA, ADA **Tooling:** Jira, Confluence, GitHub, Jenkins, Postman, Slack EDUCATION --------- Bachelor of Science – Multimedia Studies & Computer Engineering Northeastern University Master’s Coursework – Communication Protocols & Internet Architectures Harvard Extension School CERTIFICATIONS -------------- Cyber AB Registered Practitioner (RP) PMP – Project Management Professional (PMI) Agile / Scrum / Kanban Methodologies REFERENCES HENRY DITTMER ([henry@sensible-leadership.com](mailto:henry@sensible-leadership.com)) To whom it may concern, It’s a pleasure to recommend Paul Stewart for any senior leadership role. I’ve collaborated with Paul during a crucial phase of a client’s transformation initiative. I brought him into the project based on a trusted recommendation, and it turned out to be one of the most strategic decisions we made. With decades of experience in technology and business, I was struck by Paul’s blend of technical expertise and strategic foresight. He has a rare ability to convert vision into execution, modernizing how teams operate while ensuring long-term sustainability. Paul introduced agile methodologies that allowed us to shift from rigid development cycles to rapid, iterative delivery. This significantly accelerated our ability to deliver value. Paul’s strength lies in balancing big-picture thinking with detailed execution. He’s analytical, intuitive, and responsive to shifting priorities. He streamlined processes, introduced scalable architecture, and guided the team through continuous improvements—all with unwavering integrity and transparency. As a leader and consultant, Paul communicates clearly, mitigates risks early, and inspires high performance. He led a diverse, distributed team with empathy and precision, aligning technical contributors and stakeholders alike. Every milestone was delivered reliably, and the results surpassed expectations in terms of usability, durability, and strategic value. Paul leads with a strong sense of purpose. He brings intellectual clarity and emotional intelligence to every engagement. Any organization would benefit immensely from his leadership, systems thinking, and commitment to meaningful outcomes. Please feel free to contact me directly for more insight. Sincerely, Henry C. Dittmer Sensible Leadership Coaching, LLC [henry@sensible-leadership.com](mailto:henry@sensible-leadership.com) +1 (303) 810-4905 BEN TOMLIN ([btomlin@uw.edu](mailto:btomlin@uw.edu)) I’m pleased to share my wholehearted recommendation of Paul Stewart. I originally worked with Paul at the intersection of technology and learning innovation. At a time when digital collaboration was just beginning to take shape, Paul helped us envision and execute an ambitious solution that merged content, community, and utility in a single, intuitive system. What impressed me most was Paul’s ability to deeply understand the people at the center of the work. He actively engaged all stakeholders—whether strategic leaders or frontline users—to co-design meaningful outcomes. He guided us through choices with clarity, balancing bold innovation with practical delivery. The result was something visionary, built well before many of today’s mainstream tools emerged. And yet Paul’s strength wasn’t just technical—it was his commitment to solving real- world problems and advancing the mission through design and engineering. Even as our careers progressed, I’ve remained inspired by Paul’s foundational approach: engage thoughtfully, build iteratively, and measure success by impact. The principles I observed in those early years have clearly endured in the way he continues to lead teams and deliver change across sectors. I hold Paul in the highest regard as an innovator, mentor, and leader. Any forward-thinking organization would benefit greatly from his presence. Warmly, Ben Tomlin Senior Director, Communications [btomlin@uw.edu](mailto:btomlin@uw.edu) To whom it may concern, It’s my pleasure to offer this recommendation for Paul Stewart, whom I’ve had the opportunity to work with closely over the past several years on the development and continuous evolution of a specialized digital platform. From the beginning, Paul brought more than just technical expertise—he approached the work as a strategic partner. He took time to understand the needs and dynamics of our clients and end users, and he translated that understanding into a platform that was not only robust and secure, but remarkably intuitive. Paul was instrumental in shaping a product that handles complex workflows and permissions without ever losing sight of user experience. One of the things I appreciate most about Paul is his ability to manage complexity with calm clarity. He leads with thoughtfulness, listens intently, and never loses sight of what success looks like for the people on the other side of the screen. Under his leadership, projects were delivered on time and under budget, and always with scalability and adaptability in mind. Beyond the technical scope, Paul has been a valued thought partner as our work has grown. Whether navigating tight timelines or evaluating new opportunities, I’ve consistently relied on his clear thinking, grounded perspective, and collaborative spirit. His contributions have made our work stronger and more resilient. Any team would benefit from Paul’s ability to turn ambiguity into action and vision into results. I recommend him enthusiastically. Warm regards, Shannon Berg Founder & CEO [shannon@bergassociatesnw.com](mailto:shannon@bergassociatesnw.com) 503.347.8822 TYSON BROWN ([brown.tyson@gmail.com](mailto:brown.tyson@gmail.com)) It is my pleasure to recommend Paul Stewart for senior leadership and strategic delivery roles. I worked closely with Paul in my capacity as a Product Manager, where he served as a consulting partner and development lead to help us drive and deliver compelling capabilities to our customer base. When we faced the challenge of building a new system under a short timeline and with high technical expectations, Paul’s team stepped in and delivered beyond expectations. He quickly absorbed the complexity of our business problem and translated it into a thoughtful, strategic technical solution. He worked with us from discovery through deployment, balancing technical feasibility with user-centric design and organizational priorities. Paul’s leadership was crucial to the success of this initiative. He assembled and guided a hybrid team of frontend, backend, and QA engineers who worked in close collaboration with our in- house teams. His calm and focused presence helped maintain momentum through tight deadlines, shifting requirements, and technical unknowns. The product we launched achieved exceptional adoption rates and remains a critical, high-use capability today. As a development manager, Paul consistently solved difficult problems with elegance and empathy. He is fluent in both the language of business and technology, serving as a vital bridge between strategic goals and technical execution. His standards for quality and innovation were evident in every deliverable. Equally important, Paul led with integrity and transparency. He built trust quickly with our teams and fostered a culture of accountability within the distributed team he managed. His hybrid-first team structure and leadership approach predated current remote trends by over a decade, serving as a model for high-performing global teams. Paul brings strategic thinking, operational discipline, and a collaborative spirit to every engagement, making him a valuable asset to any organization. Please feel free to contact me directly should you wish to discuss his candidacy further. All the best, Tyson Brown LinkedIn 480-399-9899 [brown.tyson@gmail.com](mailto:brown.tyson@gmail.com)

Qaiser Mehmood

I am a highly skilled **Senior Software Engineer** with over **20 years** of experience in designing, developing, and managing small to large-scale applications using **C# and .NET (Standard & Core)** frameworks. I am proficient in both backend and frontend development, and I deliver high-quality solutions following best practices in design patterns, architecture, and testing. **Top focus on providing AI solutions integration to .net applications for multiple clients.** My recent expertise includes Blazor, Radzen, Oqtane, ABP.io, ASP.NET Zero, ASP.NET Boilerplate, and cloud platforms like Azure and AWS, with strong experience in CI/CD pipelines, task management, and Agile/Scrum methodologies. I am experienced in unit and integration testing using xUnit, NUnit, Moq, BUnit, and performance/load testing with BlazeMeter and JMeter. **Key Expertise** - C# / .NET Development (20+ Years): ASP.NET MVC, ASP.NET Core, WebAPI, Standard & Core Frameworks, Design Patterns. - Frontend & UI Technologies: Blazor (Server & WebAssembly), Radzen, Oqtane, Angular, React.js, TypeScript, JavaScript, jQuery, HTML5, CSS3, Bootstrap. - ASP.NET Zero & Boilerplate Solutions (9+ Years): Enterprise-grade SaaS applications, multi-tenant systems, modular architecture. - Database & Data Management (15+ Years): SQL Server, Oracle, MongoDB, SQL Azure, Stored Procedures, T-SQL, MDX, SSRS, Telerik and most of latest toolkits. Vector DBs. - Cloud & DevOps (12+ Years): Azure, AWS, Azure Functions, Azure API, CI/CD pipelines, GitHub, BitBucket, TFS, SVN, Jira, Trello. - Testing & Performance: Unit testing (xUnit, NUnit, Moq, BUnit), Load & performance testing (Blazemeter, JMeter). - Software Design & Architecture: SOLID principles, SOA, TDD, Code First & DB First, scalable and maintainable enterprise solutions. - Agile & Project Management: Scrum, CMMI, Basecamp, Microsoft Teams, Whimsical. **Professional Highlights** Provided complex, enterprise-level solutions for top global companies including: The New York Times, Walmart, Knowledge Shop Pty Ltd, Easton Investments Ltd, Merit Wealth Pty Ltd, Beam, Live Help, Decisions, DigitalRep, Matrix Protection. Extensive experience in full lifecycle development, from requirement analysis and architecture to deployment and maintenance. Strong problem-solving and leadership skills, mentoring teams and ensuring high-quality deliverables. Regards, **Qaiser Mehmood**

Juan Elfers

**Senior Frontend Engineer | JavaScript & React Specialist** I’m a senior software engineer with 10+ years of experience delivering reliable, scalable web applications. I turn complex requirements into clean, maintainable solutions that drive real impact quickly. Beyond coding, I’m passionate about improving team workflows, mentoring developers (including several years guiding students and professionals on Codementor), and ensuring projects move smoothly from idea to production. I’ve helped startups and established companies accelerate development cycles, improve product quality, and scale platforms serving thousands of users daily. Along with deep technical expertise, I bring the ability to collaborate, guide, and deliver measurable results. **Core skills:** React.js, Next.js, Node.js, TypeScript/JavaScript, databases (SQL/MongoDB), Tailwind, HTML/CSS, UX/UI, deployments on Vercel & AWS.

Ambuj Kumar

I am a software professional with 17 years of experience, having worked with big names like Microsoft and Google. In my spare time, I love to share my knowledge with others. I am passionate about **helping people fix their code to remove bugs** and make it more human-readable and hence easier to maintain. I am a **seasoned interviewer** as well, and love to help people prepare for tech interviews. I am passionate about **Maths** as well and love to solve Maths problems and help others understand Maths better.

uzair rahim

A **Team Lead**, and a **Senior Software Engineer (Full-Stack )** with **10 years** of experience. I have worked on all front-end frameworks **(Angular JS, Vue JS, React JS, JavaScript, jQuery)** with responsiveness **(Html5, CSS, bootstrap)** and back end including **PHP (Laravel /code igniter/ Yii framework , Python, Java)**, **Node JS** and **Server-less (AWS-Amplify)**, etc. Strong Programming and OOP concepts. I am really good at **Design Patterns**, databases **(MySQL, SQL Server, Mongo DB, GraphQL, Dynamo DB, PostgreSQL)**, and Data structures. Ability to handle and make advanced database queries and provide solutions for big data applications. Extensive knowledge to deploy code on **Linux-based servers** and **AWS**. I have also worked on CMS platforms like **WordPress** and **Magento**. I want to do/give something to the IT industry and to our young developers by sharing my skills and knowledge with them.