--- title: "Abhishek R. - SDE-3 in Greater Bengaluru Area | Tal" description: "Meet Abhishek R., Senior Backend Engineer (SDE-3) @ Cashfree Payments | Golang & Java | Low-Latency APIs, Distributed Systems | Kafka · Redis · PostgreSQL · Kubernetes · AWS | Scaling payments infra to 10,000+ TPS based in Greater Bengaluru Area. AI stack includes claude code, claude, and gemini." image: "https://tal.club/meet/abhishek-ranjan-4/share-image" --- # Abhishek R\. on Tal ## Headline Senior Backend Engineer \(SDE\-3\) @ Cashfree Payments \| Golang & Java \| Low\-Latency APIs, Distributed Systems \| Kafka · Redis · PostgreSQL · Kubernetes · AWS \| Scaling payments infra to 10,000\+ TPS ## About I build backend systems where money moves and latency matters\. At Cashfree Payments \(SDE\-3\), I work on payment infrastructure handling 10,000\+ TPS in production\. I architected our Active\-Active multi\-region disaster recovery, cutting RPO/RTO from 20 minutes to under 2 — a 10x improvement on a system that cannot afford to be down\. Six years in, my work sits in three areas: ⚡ Low\-latency, high\-throughput services Golang and Java \(Spring Boot, Micronaut\) microservices exposing REST and gRPC APIs\. I built the real\-time UPI bank\-switch routing engine that scores bank success rates on live traffic and makes routing decisions in the request hot path — a 6% uplift in Card and UPI transaction success rates\. 🛡️ Resilience and reliability Active\-Active DR across AWS regions \(RPO/RTO < 2 min\)\. A GitOps canary deployment framework across 60\+ microservices using Kubernetes, ArgoCD, Jenkins, and Datadog — 250\+ production incidents prevented, zero\-downtime releases with automated rollback\. Observability instrumentation that cut mean\-time\-to\-detect for P0 incidents by \~40%\. 🧱 Distributed systems fundamentals Kafka \(partitioning, consumer groups, cross\-region mirroring\), Redis, PostgreSQL, Cassandra\. Concurrency, idempotency, circuit breakers, and the unglamorous correctness work that keeps a financial ledger honest when downstreams fail\. Before Cashfree, I built the Bank Rewards Offer Engine and CRED Locker at 91social, and led backend for Yantra Live at Gurutu\. I care about systems that are fast, correct, and boring to operate\. Currently going deeper on Rust and low\-latency systems design\. Open to senior backend engineering roles — Bengaluru or remote\. 📫 abhishekranjan2801@gmail\.com Tech: Golang · Java · Spring Boot · Micronaut · gRPC · REST · Kafka · Redis · PostgreSQL · Cassandra · Kubernetes · Docker · AWS · Terraform · ArgoCD · Jenkins · Datadog · Grafana · Prometheus ## Location Greater Bengaluru Area ## AI stack claude code claude gemini openai ## Work experience SDE\-3 at Cashfree Payments, Oct 2025 \- Present · 11 mos, Bengaluru, Karnataka, India, At Cashfree Payments, I have significantly contributed to building robust payment infrastructure\. I designed an Active\-Active Disaster Recovery system that improved recovery time objectives and developed a Canary Deployment framework that enhanced deployment reliability\. My efforts led to a notable uplift in transaction success rates and reduced incident response times, showcasing my expertise in distributed systems and cloud technologies\. Senior Software Engineer at Cashfree Payments, Oct 2021 \- Present · 4 yrs 11 mos, Bengaluru, Karnataka, India, • Architected Active\-Active Disaster Recovery across multiple AWS regions, achieving RPO and RTO under 2 minutes — a 10× improvement over the previous 20\-minute baseline\. • Built end\-to\-end Canary Deployment framework for 60\+ microservices using Kubernetes, Jenkins, ArgoCD, and Datadog, preventing 250\+ production incidents and enabling zero\-downtime releases with automated rollback\. • Drove a 6% uplift in Card and UPI Switch transaction success rates by diagnosing routing bottlenecks and optimising retry/failover logic in the payment gateway stack\. • Designed and shipped scalable microservices in Golang and Java \(Spring Boot, Micronaut\), handling peak loads exceeding 10,000 TPS on AWS \(EC2, RDS, Lambda, S3\)\. • Enhanced platform observability by instrumenting Datadog dashboards and Grafana/Kibana alerts, reducing mean\-time\-to\-detect \(MTTD\) for P0 incidents by \~40%\. • Authored engineering RFCs and internal documentation on scaling high\-traffic payment systems, adopted as onboarding resources for 10\+ new engineers\. Software Developer at Gurutu, Nov 2020 \- Oct 2021 · 1 yr, Bengaluru, Karnataka, India, \- Led backend development of Yantra Live, processing 1,000\+ daily orders; improved operational efficiency by 25% through API and database optimisation\. \- Designed and optimised PostgreSQL schemas and query plans, cutting average response latency by 35% on high\-read endpoints\. \- Reduced go\-live production errors by 30% by establishing cross\-functional testing protocols and automated regression suites \(JUnit, Mockito\)\. Software Engineer at Valtrove People Solution Pvt\. Ltd \(91social\), Sep 2019 \- Oct 2020 · 1 yr 2 mos, Bangalore, \- Built the Bank Rewards Offer Engine for CRED, processing 10,000\+ rewards/day with sub\-100ms p99 API response times\. \- Developed CRED Locker, a secure document storage service for 50,000\+ customer documents, improving retrieval efficiency by 40% via Elasticsearch indexing\. \- Reduced backend service development turnaround time by 25% by introducing reusable service templates and standardised CI/CD pipelines\. ## Education Bachelor of Technology, Electrical, Electronics and Communications Engineering, Dr\. A\.P\.J\. Abdul Kalam Technical University High School Diploma, Electrical, Electronic and Communications Engineering Technology/Technician, Delhi University [View the original profile](https://tal.club/meet/abhishek-ranjan-4) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Person", "@id": "https://tal.club/meet/abhishek-ranjan-4#person", "name": "Abhishek R.", "url": "https://tal.club/meet/abhishek-ranjan-4", "image": "https://tal.club/meet/abhishek-ranjan-4/profile-photo.jpg", "description": "Meet Abhishek R., Senior Backend Engineer (SDE-3) @ Cashfree Payments | Golang & Java | Low-Latency APIs, Distributed Systems | Kafka · Redis · PostgreSQL · Kubernetes · AWS | Scaling payments infra to 10,000+ TPS based in Greater Bengaluru Area. 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