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Sentinel, Rate Limiter, Vektr

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Go, Java, Python, Redis, AWS...

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NexusNews, GlobalPD, StreetMart...

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GitHub Profile

github.com/sameer-sde

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SameerAhmedDev · 300+ problems

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ameersameer252@gmail.com

Available for Internships · Hyderabad, India

SAMEER AHMED

Software Engineer.

Third-year CS student at MJCET, Hyderabad. I build distributed systems, ML inference pipelines, and open source tools — from scratch, with real benchmarks. I read Stripe and Cloudflare engineering blogs for fun.

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Max RPS

OSS Stars

LC Solved

Merged PRs

Sameer Ahmed

Software Engineer

About Me

Background & Story

I'm a third-year Computer Science student at Muffakham Jah College of Engineering, Hyderabad — obsessed with building systems that are fast, correct, and resilient under pressure.

I don't reach for libraries when I can understand fundamentals by building them. Hand-rolled HNSW vector indexes. Atomic rate limiters. ML inference at 71K RPS. These aren't side projects — they're proof of depth.

I contribute to open source at production-grade repos like LangChain4j and linkedin/cruise-control, study from Stripe and Cloudflare blogs, and grind competitive programming.

Distributed SystemsML Inference Open SourceGo JavaPython RedisKubernetesAWS

LocationHyderabad, India

DegreeB.E. CSE · MJCET

Year3rd Year (2024–2028)

StatusOpen to Internships

GitHubsameer-sde ↗

LinkedInsameer-ahmed ↗

LeetCodeSameerAhmedDev ↗

Selected Work

Projects /03

⚡ Systems Engineering

001

Sentinel — Real-Time Fraud Detection

Go · Python · XGBoost · ONNX · AWS EC2 · Prometheus

71K

RPS

<6ms

p95 latency

errors / 7.8M req

0.87

PR-AUC

99%

cache hit

Exported XGBoost to ONNX served via Go HTTP server. Trained on 284K transactions achieving PR-AUC 0.87, 86% recall. Zero-downtime deploys via atomic.Pointer hot-swap and A/B traffic splitting with Prometheus metrics on AWS EC2.

View on GitHub ↗

⚡ Distributed Systems

002

Distributed Rate Limiter

Go · Redis · Lua · React · Docker · GCP

18,769

req/s

16ms

p95

61%

throughput ↑

4 atomic algorithms via Redis Lua scripts. Consistent hash ring with 150 virtual nodes across 3 Redis shards. Tuned connection pool 10→50 per shard. Live React dashboard on GCP.

GitHub ↗

🧠 AI · ML

003

Vektr — RAG Engine with Hand-Rolled Vector Search

Java · Python · Undertow · React

0.984

recall@10

35ms

cold start

<1ms

cached

Hand-rolled HNSW vector index (Malkov & Yashunin, 2018). Hybrid BM25 + dense retrieval with RRF fusion. HyDE query rewriting and atomic index persistence — loads in <15ms on restart.

GitHub ↗

Experience

Open Source & Work

2024
Present

Open Source Contributor — LangChain4j

PR #5341 ↗ · github.com/langchain4j · 12K+ Stars

Implemented deduplication of overlapping TextSegments in the RAG retrieval pipeline. Added suffix-prefix overlap detection with 9 unit tests and a configurable opt-out flag. PR #5341 merged.

JavaRAGLLMTesting

2024
Present

Open Source Contributor — linkedin/cruise-control

PR #2377 ↗ · github.com/linkedin · 3K+ Stars

Fixed missing EasyMock.verify() calls before reset() in unit tests. PR #2377 merged — all 6 affected tests pass.

JavaEasyMockKafka

2024
Present

Self-Directed Systems Engineer

Independent · Hyderabad, India

Studied Designing Data-Intensive Applications + Stripe/Cloudflare blogs. Built consistent hashing, LRU caching, HNSW vector search, and atomic concurrency from scratch outside coursework.

GoJavaPythonRedisAWSGCP

Tech Stack

Interactive Globe

Sameer Ahmed

FULL STACK SYSTEMS

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Stack

Skills

⚡ Languages

Go90%

Primary

Java85%

Primary

Python82%

Primary

JavaScript70%

Secondary

🏗️ Infrastructure

Distributed Systems88%

Expert

Redis / Kafka84%

Advanced

Docker / Kubernetes78%

Advanced

AWS / GCP75%

Proficient

🧠 ML & AI

ML Inference / ONNX80%

Advanced

XGBoost / scikit-learn75%

Proficient

Vector Search / RAG82%

Advanced

Claude / Anthropic API85%

Advanced

🛠️ Tools & Technologies

Prometheus k6 PostgreSQL gRPC Spring Boot FastAPI React Linux Git Kubernetes CI/CD Vite sentence-transformers Lua Azure

Background

Education

2024 — 2028

🎓 Currently Enrolled

Muffakham Jah College of Engineering

B.E. Computer Science & Engineering

📍 Hyderabad, India

Distributed Systems Algorithms & DS Operating Systems Database Systems Computer Networks Software Engineering

3rdYear

CSEMajor

2028Graduation

2023

Orugallu Junior College

Class XII

85.5%

2021

St. Johns High School

Class X

🏆

PERFECT SCORE

10.0 / 10.0

All Work

More Projects

🧠 AI · React · Live Data

NexusNews — AI War Room Intelligence Dashboard

Live ↗ GitHub ↗

React 18 · Claude Sonnet 4 · NewsAPI · Recharts · Web Audio API · Vercel

Production-grade AI intelligence dashboard with 35+ pages — pulls live breaking news via NewsAPI, processes through Claude AI, and presents as a cinematic war room. Features DEFCON meter, geopolitical threat maps, AI scenario simulator, psychological world leader profiles, disinformation detector, voice navigation, 4 cinematic themes, and Cmd+K global search.

ReactClaude AINewsAPI 35+ PagesLive DataVoice Control

35+ pages · 20+ AI use cases

🔰 AI · Full Stack

GlobalPD — International Police Operations Platform

Live ↗ GitHub ↗

React 18 · Vite · Claude Sonnet 4 · Unsplash API · SVG

AI-powered police operations dashboard across 18 pages — case management, suspect profiling, wanted wall, evidence vault, undercover ops, AI crime analyst, world map with case pins, inter-agency encrypted chat, and role-based officer authentication.

ReactClaude AI18 Pages SVG NetworkRole Auth

🕯️ AI Game · Interactive

Deadline Detective — AI Murder Mystery Game

Live ↗ GitHub ↗

React 18 · Claude Sonnet 4 · Canvas API · Web Speech API

1920s AI murder mystery game — interrogate AI suspects powered by Claude, inspect a clickable crime scene map, use a lie detector and fingerprint scanner. Includes 3 game modes (Detective, Killer, Daily Mystery), ghost witness, voice mode, leaderboard, 6 achievement badges, and vintage newspaper ending screen.

ReactClaude AICanvas API 3 Game ModesVoice

📱 PWA · Hyperlocal · 10 Languages

StreetMart — Hyperlocal Vegetable Marketplace

Live ↗ GitHub ↗

React 18 · PWA · Web Speech API · Google Maps API · UPI · Service Worker

Progressive Web App connecting Hyderabad residents with local street vegetable vendors. Features live vendor map, 10+ Indian language support (Hindi, Telugu, Tamil, Kannada, Malayalam...), voice search, group buying with live member list, bulk discounts, loyalty points, vendor dashboard with AI tips, UPI payments, offline support via service worker, and WhatsApp pre-ordering.

PWA10 LanguagesOffline Voice SearchMapsUPI

Installable · Works offline

View All on GitHub ↗

SAMEER AHMED

Background & Story

Projects /03

Open Source & Work

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Skills

Education

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