Marcin Hagmajer
Lead Product Engineer at Membrane
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMarcin Hagmajer is a Lead Product Engineer with 11 years of experience blending startup agility and big-tech rigor to build scalable TypeScript/React/Node.js systems and AI-driven integrations. He has driven product-critical engineering at Box (automating next-gen SDKs and AI metadata tooling), prototyped OpenAI-powered financial automation at Kick, and invented the AskQL open-source query language to simplify dynamic data retrieval. As a former CTO and founder, he pairs hands-on coding with architecture design, rapid prototyping, and mentoring across distributed teams. Based in Warsaw with an MSc in Computer Science from the University of Warsaw, he brings a rare mix of systems-level thinking and practical API/SDK craftsmanship. An understated strength: he repeatedly turns research ideas into production features that reduce integration friction and accelerate developer velocity.
10 years of coding experience
12 years of employment as a software developer
Master of Science Computer Science, Master of Science Computer Science at University of Warsaw
Polish, English
Stackoverflow
111reputation
3kreached
10answers
0questions
Github Skills (200)
testing10
command-line-interface10
npm-package10
swagger10
component-library10
specification10
semantic-ui-react10
api10
inferno10
reactive-programming10
box-sdk10
nodejs10
mongodb10
oclif10
user-interface10
Programming languages (11)
Github contributions (5)
CatchTheTornado/askql
Apr 2020 - May 2021
AskQL is a query language that can express any data request
Contributions:3 releases, 66 reviews, 202 commits in 1 year
queryapiintegrationsqlexpress
mhagmajer/server-router
May 2017 - Aug 2020
Server router with authentication for Meteor
Contributions:17 commits, 16 pushes, 1 branch in 3 years 3 months
routerauthenticationmeteorwith-router
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.