Kostas Mamalis
Fractional CTO Founder at LSEG (London Stock Exchange Group)
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolKostas Mamalis is an engineering lead with 14 years of hands-on and leadership experience building full-stack, automated and resilient systems across finance, energy and telecoms. He blends deep engineering skills in React, TypeScript, Node.js, Scala and Solidity with strong automation and BDD expertise, having run CI/CD and testing frameworks at scale. Comfortable both as a Scrum Master and VP-level manager, he has led outsourced teams and delivery for firms from Goldman Sachs to LSEG, driving digital transformation and risk-focused trading platforms. His background in fixed income and derivatives risk informs pragmatic, auditable engineering choices for regulated environments. A certified Scrum Master and blockchain nanodegree graduate, he pairs traditional enterprise practises with curiosity about emerging tech. Based in London, he’s known for turning complex domain requirements into well-tested, production-grade software while mentoring cross-functional teams.
14 years of coding experience
19 years of employment as a software developer
BEng in Computer Engineering Computers engineering and Informatics, BEng in Computer Engineering Computers engineering and Informatics at University of Patras
English, Greek
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (29)
pattern7
react6
yadda6
npm6
nextjs6
csharp5
jenkins3
integrate3
javascript3
jenkins-plugin3
dsl3
cucumber-jvm3
java3
nodejs3
react-typescript2
Programming languages (2)
Github contributions (5)
NTTDATA-UK/cherry
Apr 2016 - Jul 2016
Contributions:103 commits, 2 PRs, 94 pushes in 3 months
patterncsharpsugar
mamalisk/agenta
Mar 2015 - Aug 2017
Contributions:20 commits, 2 PRs, 18 pushes in 2 years 4 months
javascriptbdddslnodejsautomation
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.