Sergei Kalugin is a Lead Software Engineer based in Sofia with 10 years of experience building full-stack solutions and taking end-to-end ownership of product delivery. He has progressed through senior and leadership roles at EPAM Systems and PROGNOZ.RU, combining hands-on engineering with solution architecture and technical leadership. Comfortable across front-end and back-end stacks, he excels at translating complex requirements into maintainable systems for mid-size product teams. His background in applied mathematics and early experience as an individual entrepreneur give him a strong analytical approach and a pragmatic, delivery-focused mindset. Known for mentoring peers and guiding architecture decisions, he thrives in environments that value both code quality and product outcomes. Outside core responsibilities, he brings an engineer’s curiosity for tooling and process improvements that reduce cycle time and operational friction.
10 years of coding experience
11 years of employment as a software developer
Technician, Operation and maintenance of computer systems, Technician, Operation and maintenance of computer systems at Perm Aviation College
Bachelor of Engineering - BE, Applied Mathematics, Bachelor of Engineering - BE, Applied Mathematics at Perm National Research Polytechnic University (PSTU)
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Sergei Kalugin - Lead Software Engineer at EPAM Systems