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Stefan Tomasiewicz
DevOps Lead Engineer EMEA at Janus Henderson Investors, EMEA
Professional Background
Stefan Tomasiewicz is an accomplished software professional with extensive experience in the fields of software development, quality assurance (QA), and DevOps. Currently serving as a DevOps Lead Engineer at Janus Henderson Investors, he plays a pivotal role in setting up a focused DevOps team dedicated to educating engineers about best practices in CI/CD, Git strategy, and build and release activities in Azure DevOps. Stefan is passionate about improving software output and user experiences by developing long-standing QA processes.
With a solid foundation in both development and testing, Stefan's approach is both pragmatic and holistic, which allows him to excel in his work. He has made remarkable contributions to the field of software development through his innovative practices and has demonstrated exceptional leadership by implementing DevSecOps standards and spearheading initiatives in DataDevOps. His dedication to continuous learning and improvement has established him as a knowledgeable resource within his team and the larger professional community.
Education and Achievements
Stefan holds a Bachelor of Science (B.A.Sc.) from Mill Hill County High School, where he developed a keen interest in technology and problem-solving. Building on this foundation, he pursued a Bachelor's Degree in Computer Science and graduated with a 2:1 from Brunel University London. His educational background equipped him with essential skills and knowledge to embark on a successful career in technology and engineering.
Throughout his career, Stefan has held various positions in reputable companies across the financial and technology sectors. Most recently, he has taken charge as a DevOps Lead Engineer at Janus Henderson Investors, where he leads efforts to centralize deployment processes and improve SDLC practices. Previously, he demonstrated his expertise as an Agile Software Test Engineer and Automation Engineer, contributing significantly to projects that required a blend of testing and development skills. At Gazprom Marketing & Trading, he further honed his technical skills as an Automation Engineer, bringing forth quality enhancements and process optimization in software development and testing.
In addition to his professional accomplishments, Stefan has actively participated in the tech community as an organizer of Testing At the Tavern, a meetup aimed at fostering collaboration and knowledge sharing among QA professionals in London. His involvement reflects his commitment to personal growth and the collective advancement of the industry.
Notable Tools and Technologies
Stefan's diverse technical proficiency shines through his mastery of a wide range of development tools and technologies. His current toolkit includes PyCharm, Azure, Azure DevOps, Visual Studio 2019 (C#), JIRA, PowerShell, SQL, and Oracle, among others. His expertise extends to building Test-Driven Development (TDD) bespoke full-stack systems using both Python and .NET frameworks, demonstrating his adaptability in using various programming languages and platforms.
Among the notable projects Stefan has worked on is the development of Python ETL applications designed for large data migrations during a significant CRD upgrade transformation project. He has successfully integrated Azure DevOps with JIRA to ensure synchronized SDLC reporting, showcasing his ability to streamline processes and enhance collaboration within development teams.
Stefan is also proficient in utilizing the RedGate SCA database toolset, which has enabled seamless database change releases and optimized database development processes. With his strong focus on automation, he has extensive experience in creating automation frameworks for Web APIs, websites, Windows services, and command-line applications, contributing to improved efficiency and quality in the software development lifecycle.
Achievements
Stefan's career is marked by numerous achievements and contributions to quality software output. Among his responsibilities is managing test processes using SpecFlow, where he serves as a Subject Matter Expert (SME) to extend existing test automation efforts for trade aggregation at leading investment management companies. His role requires close collaboration with development teams to ensure a higher standard of teamwork and shared understanding of user processes.
His approach to leadership emphasizes high standards and best practices, promoting a culture of excellence within his team and across departments. By advocating the latest developments in software development lifecycle practices, Stefan leads his team toward achieving agile project management and timely delivery of quality software solutions.
In addition to his technical expertise and leadership skills, Stefan is committed to ongoing learning and innovation. He is currently expanding his knowledge in Xamarin, Java, and F#, which positions him to stay ahead of emerging trends in technology and development practices. This commitment to personal and professional growth underlines his dedication to excellence and the pursuit of knowledge in an ever-evolving industry.
Conclusion
In conclusion, Stefan Tomasiewicz is a skilled and dedicated software professional, recognized for his strong expertise in DevOps, software testing, and quality assurance. His passion for quality software, collaborative teamwork, and continuous improvement defines his approach to software engineering. As he continues to lead initiatives at Janus Henderson Investors, his track record of success is poised to inspire future generations of engineers and software professionals. By enhancing quality processes and fostering innovation, Stefan exemplifies the qualities of a forward-thinking leader in the technology sector.