I am a seasoned Software Engineer with over 15 years of experience building high-performance systems in fintech, gaming, and broadcasting. I combine deep technical mastery with the ability to drive architectural change and to lead distributed, cross-functional teams.

Konstantin Mamalakis

I am a seasoned Software Engineer with over 15 years of experience building high-performance systems in fintech, gaming, and broadcasting. I combine deep technical mastery with the ability to drive architectural change and to lead distributed, cross-functional teams.

Available to hire

I am a seasoned Software Engineer with over 15 years of experience building high-performance systems in fintech, gaming, and broadcasting. I combine deep technical mastery with the ability to drive architectural change and to lead distributed, cross-functional teams.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

Amharic
Advanced
Aragonese
Advanced
Javanese
Advanced

Work Experience

Senior Fullstack Engineer at Stripe
October 1, 2023 - Present
Discovered and fixed business logic flaws affecting over $10M in cash flows and initiated architectural changes to prevent recurring discrepancies. Refactored internal and external APIs to unify feature sets, reducing duplicate code paths by 35% and improving maintainability. Reduced support tickets by 80% through UX improvements, comprehensive documentation, and enhanced internal tooling.
Senior Software Engineer at Boffins
October 1, 2023 - August 31, 2025
Overhauled message-broker and distributed file systems to improve latency and throughput. Built a video editor from scratch using WebGL shaders enabling real-time editing. Deployed AI-powered solutions including video captioning, image labeling, and translation. Contributed upstream patches to Chromium, FFmpeg, and key npm libraries. Automated team workflows, saving over 15 hours per week in manual processes.
Embedded Software Engineer at EKT
March 1, 2018 - August 31, 2025
Led the design and implementation of version 2 public API achieving 100% adoption by existing customers. Contributed upstream patches to Chromium, WebKit, and Qt. Assisted in recruiting, training, and leading a globally distributed 50-person team.
Software Engineer at QBS
July 31, 2013 - August 31, 2025
Delivered MVP on time and on budget, securing company acquisition. Recruited, mentored, and led a 7-person cross-functional team. Identified and fixed critical security vulnerabilities through penetration testing.

Education

MSc in Computer Engineering (Integrated BSc/MSc) at University of Patras
January 11, 2030 - September 1, 2011

Qualifications

Add your qualifications or awards here.

Industry Experience

Financial Services, Gaming, Media & Entertainment, Software & Internet