Oleg Denisov
Senior Backend Engineer at Praktika.ai
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolOleg Denisov is a Senior Backend Engineer based in Barcelona with 6–8 years of experience building high-performance, cloud-native platform and core systems. He has repeatedly redesigned and rewritten microservices to radically improve throughput and reliability—once delivering a 10x backend performance boost and another time increasing concurrent request handling by 200%. Oleg specializes in Python (FastAPI, async patterns), Kafka, Kubernetes and observability-driven improvements, and has driven testing cultures that raised coverage from zero to up to ~98% in projects. He’s pragmatic about cost and operability, cutting infrastructure costs by 30% and halving support load through better validation and notifications. Comfortable both hands-on and as a tech lead, he mentors juniors and prepares internal tools for inner-source reuse, reflecting a focus on durable, team-scalable engineering.
6 years of coding experience
6 years of employment as a software developer
Specialist Degree in Engineering, Specialist Degree in Engineering at Moscow State University of Instrument Engineering and Computer Sciences (MGUPI)
English, Russian, Spanish
Stackoverflow
21reputation
2kreached
0answers
1question
Github Skills (33)
json9
rest9
api9
openapi8
python8
swagger-ui8
redoc8
swagger8
fastapi8
async8
json-schema8
google-tag-manager7
high-performance7
pydantic6
javascript6
Programming languages (3)
Github contributions (5)
oleg-dirtrider/hh_parser
Feb 2020 - Feb 2021
Contributions:18 commits, 17 pushes, 1 branch in 1 year
d9i2r2t1/GTM-template-tag-Google-Ecommerce-data-transfer
Oct 2019 - Apr 2020
Contributions:18 commits, 18 pushes, 1 branch in 6 months
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