Sergey Kobzar

📞 +44 (0) 7717223335 | ✉️ sergey@kobzar.uk | 🔗 linkedin.com/in/sergeykobzar

Dynamic and results-driven Software Engineering leader with experience and passion for building high-performing teams and delivering scalable solutions. Strong track record of driving efficiency, reducing operational costs, and enhancing software platform scalability. Experienced in defining and executing technical strategy, aligning engineering direction with business goals and driving product roadmaps from concept to deployment. Thrive in fast-paced environments and using Agile practices to streamline development to reduce time-to-market. Focus on hiring and mentoring top engineering talent, creating a culture of collaboration, learning and continuous improvement.

RooserEngineering Manager (Interim Head of Engineering)

Sep 2022 - Present (London, UK)

  • Defined and executed a technical strategy successfully delivering key milestones.
  • Transformed the hiring process into a data-driven approach, doubling team size in 4 months.
  • Introduced levelling guidelines and structured performance reviews, enhancing satisfaction.
  • Established an on-call support function, reducing resolution time by 80%.
  • Transitioned to Event-Driven Architecture, boosting performance by 45%.
  • Improved load speed by 65% and reduced technical debt by 60%.

AmazonSoftware Development Manager

Jun 2020 – Aug 2022 (Cambridge/London, UK)

  • Led Alexa-wide programmes, delivering from concept to general availability.
  • Reduced service latency from 500ms to under 15ms.
  • Implemented roadmap planning processes reducing cross-team delays by 40%.

TopiaDirector of Engineering

Feb 2019 – May 2020 (London, UK / Tallinn, Estonia)

  • Standardised recruitment, growing team from 5 to 30 engineers.
  • Coached teams on Agile practices and architecture definition.
  • Redesigned support processes, reducing engineering involvement in support.

TopiaTechnical Lead

Feb 2014 – Feb 2019 (London, UK / Tallinn, Estonia)

  • Grew engineering team from 2 to 45 across two locations.
  • Transitioned monolith to microservices, improving scalability.
  • Enhanced QA test coverage and automation.

ION TradingProject Analyst

Jun 2013 – Feb 2014 (London, UK)

Openbet TechnologiesSenior Software Developer

Jan 2010 – May 2013 (London, UK)

Education

  • MSc Internet Software System, University of Birmingham
    Sep 2008 – Dec 2009
  • BEng Computer Science/Software Engineering, University of Birmingham
    Sep 2005 – May 2008