Szymon Wesolowski
Staff Engineer @Sainsbury\'s Digital, Tech And Data
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WORK HISTORY
Staff Engineer @Sainsbury\'s Digital, Tech And Data
As a Staff Engineer at Sainsbury’s Tech, I lead strategic engineering initiatives across Commercial Applications, with a focus on delivering scalable, resilient, and customer-centric solutions. My role bridges deep technical expertise with cross-functional leadership, enabling me to influence architectural decisions, mentor engineering talent, and drive continuous improvement across multiple teams.I bring a strong foundation in agile methodologies, cloud-native development, and modern software engineering practices. My work involves solving complex technical challenges, shaping engineering culture, and aligning delivery with business outcomes. I’m passionate about fostering collaboration, elevating engineering standards, and contributing to Sainsbury’s mission of delivering tech that matters.
EDUCATION
Gdańsk University of Technology
Bachelor of Science (BS), Informatyka
SKILLS
ABOUT SZYMON WESOLOWSKI
Staff Engineer with over a decade of experience in full-stack software development, specialising in.NET technologies, cloud-native architecture, and CI/CD automation. I’ve led the delivery of scalable backend solutions, mentored engineering teams, and driven digital transformation across enterprise environments.Currently at Sainsbury’s Tech, I champion strategic engineering initiatives, having transitioned from Senior Engineer to Staff Engineer. My recent work includes architecting a greenfield WebAPI solution that replaced a legacy Scala backend, fostering a culture of technical excellence through Dev Talks, and guiding teams with a solution-oriented mindset.I bring deep expertise in C#, ASP.NET Core, Azure Functions, GitHub Actions, and microservices, complemented by hands-on experience with SQL, React, and MongoDB. My approach blends technical rigour with stakeholder empathy—ensuring that engineering outcomes align with business goals.I’m passionate about clean code, agile practices, and empowering developers to ask better questions and build better systems.
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