Java 21 / Spring Boot / WebSocket / STOMP
Real-Time Collaborative Sync Engine
Distributed collaborative editing over Operational Transformation
BACKEND ENGINEER / DISTRIBUTED SYSTEMS
AMANGAUTAM.
I build what happens
behind the interface.
Event-driven backends. Real-time systems.
Engineering for the challenges that matter.
01 / ENGINEERING IN PRACTICE
SELECTED WORK
01 / 04
CASE STUDY
Java 17 / Spring Boot / Spring Cloud Gateway
ConvoMesh
Distributed real-time messaging across Spring Boot microservices
Java 20 / Spring Boot / Spring Data JPA
TinyTrail
URL shortener with click analytics and JWT auth
Java 21 / Spring Boot / Android
ResQNet
Emergency Communication Beyond the Internet
Java 21 / Spring Boot / WebSocket / STOMP
Real-Time Collaborative Sync Engine
Distributed collaborative editing over Operational Transformation
Conceptual system study / Document convergenceSCROLL TO DISCOVER — BUILT WITH INTENT.
Featured project / 04
ResQNet.
Emergency Communication Beyond the Internet
An experimental offline-first emergency communication system built with Java, peer-to-peer mesh networking, resilient message routing, and an interactive network simulation experience.
Preview requires Vercel sign-in.
Local device meshConcept illustration
A · SenderR · RelayB · Recipient
Queued locally
The sender signs an envelope and persists it before sending.
Inside the engineering
When infrastructure fails, messages still need a path.
Communication can disappear when cellular and internet infrastructure fails. ResQNet explores a local device mesh: nearby phones store and relay emergency messages without a server on the emergency path. A message still needs a reachable recipient within its lifetime and hop budget.
The approach: nearby devices persist signed messages and forward them through a local mesh. Delivery depends on a reachable recipient within the message lifetime and hop budget.
01 — About
Engineering what’s next.
I am a B.Tech Computer Science student at Galgotias College of Engineering and Technology, working on backend systems where correctness under concurrency is the hard part. With 2000+ problems solved, a LeetCode Knight rating of 2102 and a Codeforces Specialist rating of 1434, I pair algorithmic depth with systems thinking.
My engineering spans everything from production-style distributed backends to the internals of large open-source projects. I have built event-driven collaboration engines and messaging platforms in Java, Spring Boot, Kafka and Redis, and I have shipped merged pull requests into Gradle, Spring Kafka, InsForge, Armeria, Apache RocketMQ, the Kubernetes Java Client, cBioPortal, OpenRewrite and JabRef.
Right now I am a Software Engineering Intern at DragonX Systems, where I own a CUDA-accelerated ASIC physical-design flow inside the OpenLane/OpenROAD toolchain — kernels, integration, build infrastructure, benchmarking and QoR validation end to end. I am looking for backend, distributed systems and infrastructure roles where that combination of systems depth and hands-on engineering is useful.
- Location
- Greater Noida, India
- Education
- B.Tech CSE · 2023 – 2027
- Focus
- Backend & Distributed Systems
- Status
- Open to opportunities
Measured outcomes
- 01
0+
Problems solved
Across LeetCode, Codeforces and CodeChef
- 02
0
LeetCode rating
Knight — top 2%
- 03
0
Codeforces rating
Specialist
- 04
0
OSS projects
Merged pull requests
Most of what I build is not visible on screen. It is the ordering guarantee, the recovery path, the query plan and the load test that tells the truth.
02 — Stack
A universe of connected thinking.
The languages, infrastructure and tools I use across my projects. Select any technology to see where it shows up in the work.
SELECT A DOMAIN / EXPLORE THE CONNECTIONS
Languages
The languages this work is actually written in.
Java
Primary language — Spring Boot services, Kafka clients, concurrent backends.
In production systems
Spring Boot, Kafka, Redis, PostgreSQL and WebSockets carry ConvoMesh, the sync engine and TinyTrail.
In infrastructure work
Docker, Kubernetes, GitHub Actions and OpenROAD/OpenLane tooling at DragonX Systems.
In open source
Gradle, Spring Kafka, InsForge, Armeria, RocketMQ, Kubernetes Java Client, cBioPortal, OpenRewrite, JabRef.
03 — Experience
Where the work happened.
A year of production-style backend work, GPU tooling and contributions merged into projects other engineers depend on.
9
Projects contributed to
22
Merged pull requests
DragonX Systems
Software Engineering Intern · On-site / Hybrid
Building GPU-accelerated ASIC physical design infrastructure by integrating CUDA-enabled components into the OpenLane / OpenROAD open-source EDA toolchain.
- Owned end-to-end development — CUDA kernels, OpenROAD integration, build infrastructure, benchmarking, profiling and QoR validation.
- Achieved 15.7× faster GCD timing repair and 62% faster Ibex GPU timing repair through CUDA acceleration and incremental STA.
- Engineered a CUDA-accelerated OpenROAD timing-repair flow integrating GPU gate sizing, buffering and OpenSTA.
- Built and configured the complete OpenROAD ecosystem from source on Apple Silicon — Yosys, Berkeley ABC, OpenSTA, Verilator, KLayout and OSS CAD Suite.
- Containerised CUDA-enabled Yosys, Berkeley ABC and OpenROAD with Docker for reproducible deployment on NVIDIA infrastructure.
- Kernel engineering
- CUDA kernels for gate sizing and buffering
- EDA integration
- OpenROAD and OpenLane plugin surfaces
- Build infrastructure
- Reproducible from-source toolchain builds
- Performance
- Timing-repair QoR and profiling
- C++
- CUDA
- Docker
- OpenROAD
- OpenLane
- Yosys
- OpenSTA
- ASIC Design Automation
Open source contributions
All merged
<system-design />
System Design Deep Dives
Architectural decisions, trade-offs, and design patterns behind my projects.
Distributed Chat System
High-level architecture for a scalable real-time messaging platform using Spring Boot microservices, Kafka, Redis, WebSockets, and Docker.
Real-Time Collaborative Sync Engine
Event-driven synchronization architecture for a multi-user collaborative editor using Java 21, Spring Boot, Kafka, Redis, and WebSockets.
Distributed Chat System (ConvoMesh)
High-level architecture for a scalable real-time messaging platform using Spring Boot microservices, Kafka, Redis, WebSockets, and Docker.
System Architecture Flow
Client
API Gateway
WebSocket Gateway
Chat Service
Kafka
Redis
Message Store
<dsa-mastery />
DSA Mastery & Competitive Programming
Proven problem-solving skills through competitive programming and consistent practice.
Overall Statistics
0+
Total Problems
0
Active Days
0 days
Max Streak
0
LeetCode Rating
0
Codeforces Rating
0
CodeChef Rating
LeetCode
@Gautam-aman
Knight
0
Rating
1345
Solved
25
Contests
Easy
316
Medium
765
Hard
264
Codeforces
@AmanGautam_28
Specialist
0
Rating
226
Solved
10
Contests
CodeChef
@aman_gautam_28
3 Star
0
Rating
50
Solved
6
Contests
<achievements />
Achievements & Recognition
LeetCode Knight
Max Rating: 2102 (Top 2%) | Knight Badge | Consistent Practice
Codeforces Specialist
Max Rating: 1434 | Specialist Badge
Winner, Techfest Hackathon 2026
Built Smart-Sagar, an AI-powered maritime solution, among competing student teams
Merit-Based Scholarship
Full tuition fee waiver for securing top rank in B.Tech admission merit list, Galgotias College (2023)
Open Source Contributor
Merged PRs across Gradle, Spring Kafka, Apache RocketMQ, Kubernetes Java Client, cBioPortal, OpenRewrite, InsForge, and Armeria (LINE)
Event Manager - MUN
Coordinated Galgotias International MUN for 200+ delegates (Nov – Dec 2025)
05 / A CONVERSATION STARTS HERE
INDIA / CONNECTED EVERYWHERELET’S BUILD
WHAT’S NEXT.
Good systems begin with
a good conversation.
Currently interning at DragonX Systems. Interested in backend engineering, distributed systems, and infrastructure opportunities.
work.amangautam2128@gmail.comOpen in GmailOR LEAVE A NOTE
BUILT WITH INTENT. OPEN TO POSSIBILITY.