Sunjay Jeffrish Venus Gnanathangam
Senior Software Engineer @Delivery Hero SE
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WORK HISTORY
Senior Software Engineer @Delivery Hero SE
Berlin, DE
Senior Software Engineer – Logistics TeamWorked on the Order Tracking Page (OTP) and Estimations Squad, delivering large-scale, high-availability systems for global logistics operations.OTP V2 – Redesign & Implementation- Built config based Post Processors which is used to run A/B tests on user experience without code changes- Migrated messaging queues from SQS to Kafka, achieving recurring savings of €10K+ per month- Engineered shard-based load balancing across applications, Redis, and all dependent platforms, reducing outage blast radius to under 20%.Weather Updates Integration- Designed, built, and deployed real-time, region-specific weather updates for OTP, tailored to each customer’s geographical location.Stacked Orders Routing- Delivered routing solutions for stacked orders, processing over 1 billion routes across all Delivery Hero platforms and countries- Developed a custom OSRM engine using OpenStreetMap data, supporting multi-point routing for multiple vehicle types while factoring in country-specific traffic rules and conditions- Reduced Kubernetes resource usage through CRDs and application metrics–driven scaling, significantly improving operational efficiency.
EDUCATION
National Institute of Technology, Tiruchirappalli
Bachelor of Technology (B.Tech.), Chemical Engineering
ABOUT SUNJAY JEFFRISH VENUS GNANATHANGAM
Senior engineer with 9 years of experience in both backend and devops. Worked with low latency and high throughput fault tolerant systems. Experienced in building Highly Available and Distributed Systems. Development experience in multiple languages (Java, Python, JavaScript, Go) across different tech stacks.Tech stacksSpring Boot, Kotlin, Play Framework SQS, Lombok, Hibernate, FastAPI, Flask, NodeJSDistributed Systems: Memcache, Redis, kafka, Pub/SubDevops: Terraform, Docker, KubernetesDatabases: Postgres, Mysql, Spanner, BigTable, Mongo, Couchbase, Bigquery, RedshiftCloud Infrastructure: AWS, GCP
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