Sayan Das
Senior Software Engineer at Delivery Hero
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolSayan Das is a Senior Software Engineer with 11 years’ experience specializing in low-latency, large-scale search systems and production-grade indexing pipelines. Based in Berlin and currently improving quick-commerce search at Delivery Hero, he has a strong track record optimizing Apache Solr deployments for cost, latency and horizontal scalability. He designed multi-sharded indexing and zero-downtime migration strategies, led CPU-architecture migration benchmarking that delivered ~30% single-core gains, and tuned JVM/GC to dramatically reduce compute overhead. Comfortable across backend stacks (Lucene, Spring Boot) and large ecommerce search platforms, he blends hands-on performance engineering with pragmatic operational planning. Notably, his career shows a consistent pattern of re-architecting search infrastructure to support 10x growth while keeping query latencies in the millisecond range.
11 years of coding experience
4 years of employment as a software developer
Bachelor of Technology (BTech), Computer Science, Bachelor of Technology (BTech), Computer Science at SRM UniversityHigh School, Class 12th Boards(CBSE) : 88%, Class 10th Boards(CBSE) : 9.6 CGPA, High School, Class 12th Boards(CBSE) : 88%, Class 10th Boards(CBSE) : 9.6 CGPA at Delhi Public School, Haridwar
English, Hindi, Bengali, French
Stackoverflow
714reputation
192kreached
16answers
2questions
Github Skills (58)
growl10
solr9
matching9
piano9
wave9
notification9
marks9
backend9
flash-messages8
lucene8
python8
music8
spotify8
confirm8
openfeign8
Programming languages (5)
Github contributions (5)
poke19962008/Mash-Up
Nov 2016 - Nov 2020
Mash 2 songs with proper beat matching and cross fading techniques.
Contributions:13 commits, 2 PRs, 2 pushes in 4 years
techniquespythonmatchingsongsmash
poke19962008/My-Website
Dec 2015 - Sep 2016
Contributions:33 commits, 28 pushes, 1 branch in 8 months
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