Alejandro Lujan
Senior Software Engineering Manager at Freelance
Valencian Community, Spain
Summary
👤
Senior🎓
Top SchoolAlejandro Lujan is an engineering manager with 13 years of experience who leads data and ML-driven efforts to enrich product catalogs and drive GMV growth at Instacart. He combines hands-on engineering, architecture, and people leadership—previously building petabyte-scale data platforms at Shopify—with a deep background in Scala, Akka, and platform design. Alejandro builds human-in-the-loop systems that pair LLMs, VLMs and custom ML models with robust validation to deliver high-accuracy product metadata powering search, personalization and advertising. He is also a professional coach and seasoned trainer who has taught and mentored nearly a thousand engineers, and who brings that coaching mindset into team development and hiring. Based in Ottawa, he blends technical rigor, practical delivery, and an ethic of technology serving everyday people.
14 years of coding experience
21 years of employment as a software developer
Bachelor of Science, Electrical Engineering, Bachelor of Science, Electrical Engineering at Universidad Simón BolívarBachelor of Science, Information Technology, Bachelor of Science, Information Technology at UCAB - Universidad Católica Andrés BelloMSc, Computer Science, MSc, Computer Science at University of Ottawa
English, Spanish
Stackoverflow
392reputation
23kreached
2answers
3questions
Github Skills (38)
jvm10
reactive10
java10
scala10
restful10
web-framework10
playframework10
database10
druid10
multiplayer9
draw9
socket-io9
apache-druid9
akka9
agile9
Programming languages (6)
Github contributions (5)
alejandrolujan/dotfiles
Jan 2015 - Jan 2026
Contributions:25 pushes in 11 years 1 month
alejandrolujan/alejandrolujan.github.io
Sep 2022 - Apr 2026
Contributions:20 pushes, 1 branch in 3 years 7 months
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