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Hi, I'm Saurav Kumar.

Associate Developer at SAP Labs India. I build scalable cloud-native applications with Java, React, and Node.js focused on distributed systems, performance, and clean architecture.

Experience

Associate Developer

Jul 2025 — Present

SAP Labs India, Bengaluru

GIRAF RunAnyWhere Cloud-native test orchestration platform on HANA Cloud

  • Built CAP backend with OData services and Spring Boot APIs, running 600+ automated tests across 5 HANA clusters with dynamic dependency handling
  • Implemented locking and DB isolation for 200+ concurrent runs, reducing failures by 30% and cycle time by 50%
  • Architected multi-target, API-first cloud framework on SAP BTP registered in SaaS Registry, enabling scalability across environments
  • Designed an agentic LLM Gateway with mode-aware agents, tool-use orchestration over 50+ CAP tools, prompt caching, and a session-scoped fact store, powering async failure classification at 93.5% accuracy avg and auto-healing, reducing manual triage by 60%
  • Built a streaming SSE chat pipeline on the gateway with conversation history and shareable chat links, enabling an in-app assistant for iterative deep-dives over execution data
  • Developed a React + UI5 Web Components UI with Dashboards and Custom Reports for test analysis, centralized configuration system, and branch-based execution
SAP CAPSpring BootReactODataSAP BTPHANA CloudLangGraph

SDE Intern

May 2024 — Jul 2024

SAP Labs India, Bengaluru

  • Built a deepfake detection pipeline (EfficientNet-B4) trained on 140k+ samples, achieving 98% validation accuracy
  • Built a Flask inference service supporting 300+ concurrent requests with real-time image/video processing; optimized 1080p inference to 22 FPS
PythonTensorFlowFlaskOpenCVWebRTCReact

Education

National Institute of Technology, Warangal

Dec 2021 — May 2025

B.Tech in Electronics and Communication Engineering

CGPA: 7.69 / 10

Sunbeam Academy, Varanasi

Jun 2019 — Apr 2021

Senior Secondary (Class XII - CBSE)

95.8%

Jawahar Navodaya Vidyalaya, Buxar

Aug 2014 — Apr 2019

Secondary (Class X - CBSE)

97.6% — District Topper

Projects

Railway Ticket Booking System

View on GitHub →

High-concurrency train booking system built with Spring Boot, PostgreSQL, Redis, Apache Kafka, and Elasticsearch.

  • Distributed seat allocation using Redis Lua scripts and TTL-based locks with idempotent APIs and optimistic concurrency control
  • Event-driven workflow using Kafka for cancellations, refunds, and waitlist promotion with retry handling and dead-letter queues
  • CQRS-based search pipeline (PostgreSQL to Elasticsearch sync) with Redis caching, achieving sub-second latency
  • JWT-based RBAC, 30+ REST APIs via Swagger, React + shadcn/ui frontend
Spring BootPostgreSQLRedisKafkaElasticsearchReactDocker

Enterprise-grade WordPress security plugin with multi-layer protection and external threat intelligence integration.

  • Multi-layer protection (WAF, rate limiting, honeypot) with Cloudflare API, AbuseIPDB, and Spamhaus integration; reduced brute-force and malicious traffic with minimal latency overhead
  • Resilient admin recovery system (kill switch, bypass URL, manual override) with GDPR-compliant logging and adaptive tarpitting
  • SEO-optimized Next.js marketing site with custom CMS and admin dashboard (Lighthouse 98+)
WordPressPHPNext.jsCloudflare APIAbuseIPDBReact

Real-time chat application handling 500+ concurrent users with sub-200ms latency.

  • Event-driven architecture with Socket.io, JWT auth, and AES-256 encryption
  • Binary protocol optimization reducing bandwidth by 40%
  • Group chat with role-based access and Redis-cached participant lists
ReactNode.jsSocket.ioMongoDBRedisJWT

Skills

Languages

Java, C++, JavaScript, Python, SQL

Backend & Frameworks

Spring Boot, Node.js, SAP CAP, Express, React, Elasticsearch

Databases & Messaging

PostgreSQL, MySQL, Redis, Kafka

Cloud & DevOps

Docker, Kubernetes, AWS (EC2, S3, SQS), Jenkins, Git

Contact

Open to opportunities in backend engineering, distributed systems, and full stack development.