Lorenzo Cestaro
Lead Software Engineer at Klarna
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolLorenzo Cestaro is a Lead Software Engineer based in Berlin with 11 years of hands-on experience building and scaling product-facing systems, primarily at Klarna. He has a strong front-end and full-stack background—delivering greenfield React/TypeScript projects, integrating Elasticsearch, and shipping high-impact search and post-purchase decisioning features across multiple markets. Lorenzo has repeatedly moved projects from legacy to modern stacks under tight deadlines (notably launching a new search experience ahead of Black Friday) and scaled teams by mentoring and onboarding junior engineers. Prior to Klarna he built production microservices and CI/CD for NLP and deep-learning deployments, pairing Python and Node.js practices. With an academic foundation in environmental biology, he brings a research-minded approach to product problems and a track record of turning experimental prototypes into reliable, market-ready systems.
11 years of coding experience
8 years of employment as a software developer
Bachelor of Science (BSc) Environmental science and technology, Bachelor of Science (BSc) Environmental science and technology at Università degli Studi di PadovaMaster of Science (MSc) Environmental Biology, Master of Science (MSc) Environmental Biology at Università degli Studi di Trieste
English, Italian
Stackoverflow
46reputation
834reached
2answers
0questions
Github Skills (84)
slack-bot10
ui-components10
smith-waterman10
slack-integration10
needleman-wunsch10
typescript10
react10
react-components9
pandas9
blast9
python9
language-design9
imagekit9
antd9
manipulation9
Programming languages (4)
Github contributions (5)
lorenzocestaro/graphic-smith-waterman
Oct 2016 - Oct 2020
Javascript implementation of the Smith-Waterman algorithm for sequence alignment.
Contributions:105 commits, 8 PRs, 90 pushes in 4 years
sequencesmithsmith-watermanjavascriptalignment
lorenzocestaro/inspirobot-slack
Nov 2018 - Aug 2019
Inspirobot Slack integration
Contributions:83 commits, 9 PRs, 62 pushes in 9 months
integrationslack-botslackslack-integrationnodejs
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