Headline

Senior Backend Engineer | 7+ Years | Ex-Delhivery | Java • Spring Boot • Kafka • Distributed Systems • Temporal • AWS • AI Automation

About

Seven years. Four companies. One consistent thread: backend systems that don't fail when they matter most. At Divisions Maintenance Group, I've been part of the product engineering team building field-service operations for 50,000+ technicians across the US. I've designed Temporal-based durable workflows for the full work-order lifecycle, engineered MongoDB-backed distributed locks to eliminate race conditions at check-in, tuned JVM heap and GC strategy (G1GC/ZGC) to cut p99 latency spikes under peak load, and shipped an AI-powered Work Verification system (OpenAI API) that now auto-approves 64% of invoices — eliminating manual review entirely. At Delhivery, I scaled Kafka messaging capacity 10× using the claim-check pattern with AWS S3, redesigned warehouse pick-area logic to improve fulfillment rates by 25% on 7,000+ orders/day, and introduced DLQ-based error handling that eliminated manual retry toil across event-driven pipelines. More recently, I've been building at the intersection of backend infrastructure and AI tooling — not as a trend, but as a genuine engineering problem. I built an internal MCP (Model Context Protocol) server that lets engineers query across multiple production data sources in plain English. Watching teammates debug production incidents with natural language instead of chaining together four different query tools was the kind of outcome that makes the work feel worth it. Core stack: Java · Spring Boot · Apache Kafka · gRPC · Temporal · Kubernetes · MongoDB · Redis · AWS · Docker. I work across event-driven architecture, microservices design, distributed locking, JVM performance engineering, and AI-integrated backend systems. Currently exploring Senior Backend / Staff Engineer / SDE-III roles at product-focused companies working on hard infrastructure, fintech, observability, or AI tooling problems. 📩 akash1729kumar@gmail.com | 🔗 github.com/y2rex

Location

Bengaluru

AI stack

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Work experience

Senior Software Engineer at Divisions Maintenance Group, Nov 2022 - May 2026 · 3 yrs 7 mos, Bengaluru, • Architected and launched an AI-driven Work Verification platform using OpenAI APIs, driving 64% automated invoice approval and cutting manual review effort. • Delivered an auto-checkout solution with resilient check-in/check-out workflows for 1000+ daily technician visits in low-bandwidth environments, reducing over-billing by 10% and improving technician productivity by 15%. • Engineered a MongoDB-backed distributed lock (TTL failsafe + token invalidation) to eliminate race conditions in the technician check-in service, preventing cascading failures during traffic spikes. • Designed Temporal-based orchestration for the full work-order lifecycle — durable across pod restarts, with signal-driven state transitions and per-activity retry policies. • Led the Job Billing Migration off a tightly coupled legacy Work Service — defined gRPC service contracts with the Invoicing team and delivered a clean cutover with zero production regression. • Investigated JVM memory and GC behavior using Datadog, optimized JVM heap sizing for Kubernetes workloads, and eliminated recurring OOMKilled pod restarts during peak traffic.

Software Engineer at Delhivery, Apr 2021 - Apr 2022 · 1 yr 1 mo, Bengaluru, • Improved warehouse fulfillment efficiency 25% across 7,000+ daily orders through inventory placement optimization and workflow redesign, directly reducing turnaround time during peak shipment cycles. • Scaled Kafka messaging throughput 10× via the Claim-Check pattern with AWS S3, eliminating broker bottlenecks without reconfiguration or added infrastructure cost. • Enhanced Kafka event reliability by introducing automated DLQ processing and recovery mechanisms for event-driven logistics services running at national scale.

Software Developer at Kapture CX, Mar 2020 - Apr 2021 · 1 yr 2 mos, Bengaluru, • Built an end-to-end email platform using SendGrid for 50+ enterprise clients, engineering webhook ingestion for delivery, open, click, and bounce events to power campaign tracking and engagement analytics. • Collaborated with product and customer-success teams to translate client requirements into scalable platform capabilities, accelerating feature delivery and customer adoption. • Eliminated report-generation bottlenecks by profiling slow queries and rewriting them with proper indexing and join strategies — cutting report latency to interactive ranges.

Project Engineer at Wipro Limited, Aug 2018 - Dec 2019 · 1 yr 5 mos, Bengaluru, Karnataka, India, • Delivered financial-services applications with a 100% on-time record, cutting customer-reported defects 40% through structured testing and triage. • Owned database schema design and core business logic end-to-end, building unit and integration test suites that reduced regression defects and accelerated release cycles.

Education

Bachelor of Technology - BTech, Computer Science & Engineering, Global Institute of Technology,Jaipur