Hire Freelance Authentication Experts
Peter Goldstein
Peter is a hands-on developer, architect, CTO, and technical founder passionate about using best practices to quickly build high-quality products. He has over 20 years of experience building full-stack applications. Peter specializes in Ruby on Rails and Go but is a software generalist who is comfortable working in many languages. He is a committed open-source enthusiast who leverages open source to reduce both the cost and time needed to build the products and features he creates.
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Charles Grady
Charles is primarily a back-end developer specializing in Python. He has more than 16 years of experience developing RESTful APIs, high-throughput computations, and cluster interfaces in an open source environment. Charles published papers, gave conference presentations, and taught domestic and international workshops showcasing the tools he created, the community infrastructure, and his research projects.
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Robert Lehmann
Robert is a passionate gamer, experienced director of engineering, and blockchain enthusiast with 10+ years of professional experience and a bachelor's degree in game design. He has developed two multimillion-dollar-grossing games in Unity3D, published on Google Play and the App Store: Solitaire Showtime and Mahjong City Tours, which has over 25 million downloads. Robert has also developed unique smart contracts and dApps across different blockchains.
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Sean Zeng
Sean is a software architect from New Zealand specializing in full-stack development with a strong focus on usability, security, and simplicity. He's built business applications, streamlined development with DevOps pipelines, and delivered latency-sensitive architecture. With a passion for software, he excels at providing reliable management and great ideas. Sean enjoys working with brilliant, humble people who aren't afraid to tackle challenges and take the initiative to create excellence.
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Marcos Henrique da Silva
Marcos is passionate about full-stack development, REST architecture and Agile methodology, and JavaScript as his primary programming language. Marcos has been working with IT since 2003, and for the past few years, he's been working nearly exclusively with software engineering and focusing on web applications. Marcos specializes in JavaScript, using SPA frameworks like AngularJS, Angular, React, and Node.js for back-end development. Marcos has also worked with native Android apps and PHP.
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Roman Imankulov
Roman is a passionate software developer with 16 years of hands-on and team management experience. He's intimately familiar with the Python ecosystem and the development of scalable systems for the web. Remote worker since 2012, he's a proponent of no-surprise proactive communication style, blameless culture, and human-centric processes and workflows. Roman is also a conference speaker and organizer.
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Michal Kolodziejczyk
Michal is a software developer with 22 years of experience in programming with C# and 26 years of IT experience. He is most valued for professionalism, ease of sharing knowledge, testing his solutions, and openness to new ideas and programming methods. Michal's experience with Raiffeisen and Citi gave him a solid financial background needed for demanding projects.
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Mohammed Osman
Mohammed has confidently led a highly skilled team of .NET developers in transforming a large-scale system, leveraging cutting-edge technologies to revolutionize its performance and capabilities. We transitioned the system from outdated technologies to .NET Core, migrated the database from DB2 to SQL server, and modernized the API architecture by replacing SOAP with REST APIs. These strategic upgrades resulted in a significant boost in efficiency, scalability, and overall system performance.
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Stuart Jones
Stuart is a React Native developer with over a decade of experience building hybrid mobile applications for iOS and Android. He specializes in delivering apps across various industries at global organizations, scaleups, and startups while setting and achieving realistic deadlines. He launched a software development consultancy in 2018, advising and building mobile apps for companies such as Nando's and Perkbox. Stuart enjoys working on exciting React Native projects with international clients.
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Gilmar Rocha
Gilmar is a cybersecurity specialist passionate about software development and security. He focuses on the software development lifecycle, including analysis, design, development, testing, and maintenance, because it gives him a clearer view of security issues. As a result, Gilmar knows how to help teams solve these issues.
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Dovydas Navickas
Dovydas is a full-stack software architect with 14 years of experience building scalable systems and has experience with fintech, telco, pension funds, media, and hospitality businesses. He specializes in C# .NET and Node.js on the back end and React and TypeScript on the front end. Dovydas worked as a CTO and architect for several companies, steered technological direction, introduced automated DevOps processes, and moved large-scale projects to public and private clouds.
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