About Ishan Berry
JAVA BACKEND ENGINEER · HIGH-CONCURRENCY SYSTEMS
Java Backend Engineer with 2 years of experience building scalable backend systems, real-time applications, and AI-powered platforms using Spring Boot, Spring AI, PostgreSQL, Redis, AWS, and Oracle Cloud Infrastructure. Experienced in designing event-driven architectures, REST APIs, AI integrations, and production-ready backend services.
At Telusko, I work at the intersection of high concurrency and distributed messaging. I engineered real-time examination infrastructure scaling to 5,000+ concurrent active users using Spring Boot, WebSockets, and Ably Pub/Sub, while implementing sub-100ms real-time leaderboards with Redis Sorted Sets and PostgreSQL on AWS RDS.
Additionally, I architected and launched an end-to-end AI-powered adaptive learning platform from 0→1 using Spring Boot and Spring AI, delivering streamed technical interview simulations and vector embeddings while reducing LLM inference costs by 40%.
Non-blocking I/O, thread pool isolation, and WebSocket fan-out designed for predictable high-load resilience.
In-memory Redis Sorted Sets synced with relational PostgreSQL models under high sustained write pressure.
Oracle Cloud Certified Architect design standards, Docker containerization, and cost-controlled Spring AI pipelines.
Skills & Architecture
Core JVM internals, distributed data pipelines, cloud architecture standards, and AI orchestration.
Core Backend & Systems
Multithreading, JVM internals, Streams API, Collections
Microservices, REST controllers, dependency injection, auto-configuration
OAuth2 flows, JWT token auth, filter chain customization
LLM orchestration, prompt templates, embedding pipelines
Entity relationships, transactional scopes, HQL, lazy loading
Bi-directional real-time streams, Ably Pub/Sub fan-out at 5K scale
Data, Cloud & AI
AWS RDS, indexing strategies, ACID transactions, query optimization
Sorted Sets for sub-100ms leaderboard caching, in-memory pipelines
EC2, RDS, S3, Docker container deployment, cloud operations
Certified Architect Associate 2025, infrastructure design
Multi-stage builds, containerized microservice deployment on AWS
Realtime SDK, ChatCompletions, function calling, vector embeddings
Certifications & Education
Oracle Cloud Infrastructure certifications, statewide hackathon standings, and computer science education.
Cloud Architecture Registry
Oracle Cloud Infrastructure 2025 Certified Architect Associate
VERIFIEDOracle Cloud Infrastructure 2025 Certified Foundations Associate
VERIFIEDCompetitive Recognition
Finalist — Rajasthan Police Hackathon 1.0
Top 100 of 1,600 TeamsRanked among the Top 100 finalists out of 1,600 competing engineering teams statewide.
RAJASTHAN POLICE DEPARTMENT · 2024District Level Quiz Winner
2nd & 3rd PrizeSecured 2nd and 3rd Prize in district-level competitive technical and general science quiz contests.
DISTRICT LEVEL ACADEMIC COMPETITION · AcademicFormal Education
GLA University, Mathura
2021 – 2025B.Tech in Computer Science · Computer Science & Engineering
Mathura, India