SYSTEM_STATUS: STABLE

Platform Engineer | Scaling 100k+ RPS | Distributed Systems Reliability

Focusing on concurrency, idempotency, and high-availability failure recovery.

req_count1.2M+
dataset_size500K+ Rows
p99_latency~60ms
GitHubLinkedInEmail
~/system_stats

# distributed_stats

 

→ OS: Linux 6.1.0-generic

→ Kernel: LTS-5-generic

→ Uptime: 1 day, 5 months

→ Shell: zsh 5.9

→ Terminal: Alacritty, vs_host

 

→ upstreams: NodeJS, Go, Rust

→ infra: k8s, Terraform, AWS

 

$ tail -f /var/log/production.log

01.Production Incident Logs

Torqa Horizons

|Backend & Cloud Engineer Intern
STATUS: RESOLVED
PROBLEM:Engineered and scaled serverless e-commerce backend using Node.js + AWS Lambda, handling order, payment, and user flows with idempotent APIs and failure recovery.
SOLUTION:Integrated PhonePe payment gateway with secure webhooks, idempotency handling and webhook reliability.
RECOVERY:Implemented authentication using AWS Cognito and file storage with S3 + CloudFront for low-latency asset delivery.
RESULT:Streamlined deployments and local testing using AWS SAM, with monitoring via CloudWatch and transactional emails through SES.

GoLaddu Food Products Pvt. and Ltd.

|SDE Intern
STATUS: RESOLVED
TASK:Built React Native frontend and Supabase backend enabling real-time user actions through Postgres schemas and edge functions.
ACTIONS:Enabled real-time data sync and user actions using Supabase subscriptions.
RESULT:Set up GitHub Actions CI/CD, reducing deployment time by 30%, and collaborated directly with CTO on feature delivery.

Strmly Technologies Pvt. and Ltd.

|Software Engineer Intern
STATUS: RESOLVED
CONTEXT:Architected a full-stack video streaming platform using Next.js, NestJS, and MongoDB, serving 1,000+ daily active users.
ACTIONS:Integrated Redis caching and AWS S3 using CloudFront URLs, reducing video load times by 25% and lowering backend load by ~30%.
RESULT:Delivered scalable APIs and optimized backend services for high concurrency.

Suminite

|Web Developer Intern
STATUS: RESOLVED
TASK:Built scalable RESTful APIs with Express.js and responsive UIs using Next.js + TailwindCSS.
ACTIONS:Managed 50,000+ records in MongoDB and integrated Razorpay & PhonePe, supporting 5,000+ monthly users.
RESULT:Improved user engagement by 20% through UI and API optimizations.

02.Technical Case Studies

📊NSE Stocks Arbitrage Bot

Built an automated arbitrage trading bot executing cross-exchange strategies; achieved 15% annualized returns in backtests. Processed 1M+ stock data points/day with real-time latency under 200ms.

BOTTLENECK:Real-time latency under 200ms for 1M+ data points/day.
SOLUTION:Cross-exchange arbitrage strategies with 15% annualized returns.
TypeScriptNext.jsExpress.jsRustGroq APILangChain
View Source →

📡Observability Platform

Developed a real-time observability dashboard and REST APIs for monitoring 50+ microservices. Deployed cloud-native infra with Docker + Kubernetes, improving delivery speed by 40% via ArgoCD automation.

BOTTLENECK:Monitoring 50+ microservices with real-time alerting.
SOLUTION:Prometheus + Grafana dashboards with ArgoCD GitOps deployment.
TypeScriptNestJSDockerKubernetesTerraformPrometheus
View Source →

🤖Hiralyze — AI-Powered Hiring Platform

Built AI-driven hiring system for resume summarization, candidate ranking, and job-role matching. Implemented multi-agent workflows, reducing recruiter screening effort by 50%.

CHALLENGE:Multi-agent workflows for resume analysis at scale.
SOLUTION:LangChain + LangGraph multi-agent pipelines with Groq & Gemini APIs.
RESULT:Reduced recruiter screening effort by 50%.
TypeScriptExpress.jsLangChainLangGraphPythonFastAPI
View Source →

03.Tech Stack Decisions

LANGUAGESFRAMEWORKSDATABASESCLOUD & DEVOPSAI & SYSTEMS
TypeScriptPrimaryNode.jsRuntimePostgreSQLPrimary RDBMSAWSEC2, S3, Lambda, EKSLangChainRAG pipelines
JavaScriptCoreExpress.jsREST APIsMongoDBDocument storeDocker / K8sContainersLangGraphMulti-agent
JavaBackendNestJSEnterprisePineconeVector DBTerraform / SAMIaCGroq / GeminiLLM APIs
CSystemsNext.js / ReactFrontendRedisCache + Pub/SubGitHub ActionsCI/CDgRPC / tRPCRPC protocols

04.Debugging Stories

→ Race condition in real-time sync(Detailed)

Identified a critical bug where multiple users updating the same record simultaneously caused data loss. Solved by implementing optimistic locking at the Postgres database layer, modified services to handle conflict resolution with exponential backoff and established test-driven concurrency checks across entities.

→ Cold start optimization thread

Serverless Functions were experiencing 3s+ cold starts impacting checkout CX. Reduced latency to 4 million by extracting dependency management, enabled SIGP and established preheated+ environment for peak traffic scenarios.

06.Engineering Writing

View all on Medium →
Rounakk Raaj Sabat
Rounakk Raaj Sabat·inEngineering·Jan 30

Observability for Microservices

If you're running services and debugging only through logs, then you're not wrong — you're slow. Metrics tell you before things break. This article covers Prometheus, Grafana, and exposing a /metrics endpoint in real services...

10 min read·Observability
Observability for Microservices
Rounakk Raaj Sabat
Rounakk Raaj Sabat·inEngineering·Jan 01

Eventual Consistency & CQRS in Microservices

At small scale, a single database + CRUD APIs work fine. At scale, reads and writes compete for resources and heavy joins slow down queries. This is where CQRS and eventual consistency enter the picture...

12 min read·Systems
Eventual Consistency & CQRS in Microservices
Rounakk Raaj Sabat
Rounakk Raaj Sabat·inEngineering·Dec 30

Production Techniques Every Fresher Backend Developer Must Follow

Production code is not about clever logic. It's about predictability, safety, observability, and recovery. 10 hard rules from timeouts and retries to idempotency and structured logging...

8 min read·Backend
Production Techniques Every Fresher Backend Developer Must Follow

05.Education & Achievements

// Education

NIST University

Berhampur, Odisha

BTech — Computer Science and Engineering

2023 — 2027

CGPA: 8.47

// Achievements

→

Finalist, TechFiesta International Hackathon, 2025

  • • Top 100 / 600+ teams globally; Top 5 in grand finals among 60 finalists
  • • Led frontend development (React Native) for a healthcare app adopted by 150+ users
→

Finalist, GDG HackFest Bhubaneswar, 2026