Ismael Reifs
Fullstack Engineer at Perk
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolIsmael Reifs is a backend-focused fullstack engineer based in Barcelona with 9 years of experience building high-availability systems across travel, fintech, and delivery platforms. He specializes in Python, Django, AWS/GCP, and distributed systems design, with deep expertise in payment infrastructure, fraud prevention, and low-latency real-time scoring. At Perk he built a distributed decisioning system that cut fraud by 80% and tied backend decisioning to UX feedback to reduce churn, and at Glovo he automated operational workflows to cut manual work by 60%. His background in scientific data pipelines at the Barcelona Supercomputing Center informs a pragmatic approach to performance tuning, observability, and reproducible processing. An active mentor and team builder, he champions test strategy, onboarding, and reliable automation to scale engineering effectiveness. He is particularly drawn to backend problems that demand fault-tolerant automation, clean architecture, and measurable impact on user-facing metrics.
9 years of coding experience
4 years of employment as a software developer
Degree in Computer Science, Computer Science, Degree in Computer Science, Computer Science at Universidad Politécnica de CataluñaUOC (Universitat Oberta de Catalunya)
Github Skills (4)
bioinformatics10
python9
cassandra9
numpy7
Programming languages (1)
Github contributions (5)
Welcius/pes-melting-backend
Apr 2018 - Jun 2018
Contributions:31 pushes, 3 branches in 1 month
bsc-dd/hecuba
Nov 2018 - Mar 2020
Contributions:289 commits, 44 PRs, 242 pushes in 1 year 4 months
bigdatapythoncassandranumpybioinformatics
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.