Backend systems / Cloud / GenAI Product

Backend Engineer

Building scalable systems.

I design and ship backend-heavy products across payments, real-time analytics, AI retrieval, and cloud deployments. Currently studying Computer Science at IIIT Nagpur.

Profile

Devendra Jat

Devendra Jat

500+

DSA problems

20+

Public projects

3

Hackathon podiums

5k+

Monthly users shipped for

Current focus

Payment routing, fault-tolerant services, retrieval systems, and production-ready product surfaces.

About

Practical systems thinking, shipped as real products.

Iworkclosesttobackend,systemdesign,andcloudproblems:APIs,queues,databases,observability,reliability,andtheproductedgesthatmakeasystemuseful.

My strongest projects sit in payment routing, automated attendance, crisis communication, learning platforms, and RAG systems. I like building the parts that need clear tradeoffs: data models, latency budgets, failure handling, and clean operational flows.

Experience

Work that made it to users.

Full-Stack Developer Intern

Guruveda Technologies / Nagpur, Hybrid

Apr 2025 - Sep 2025

Built and deployed a multi-role telehealth platform using Next.js, Prisma, and PostgreSQL, with SSR and production integrations.

  • Served 5,000+ monthly active users with 99.99% uptime across 6 months
  • Integrated Razorpay billing and Google Meet video consultations
  • Improved database and SQL performance through Prisma schema work
Next.jsPrismaPostgreSQLRazorpayGoogle Meet API

Selected work

Resume-backed projects with real systems depth.

All GitHub

Distributed payment routing

Payment Gateway Aggregator

Featured

A NestJS microservices system that scores gateways by success rate, latency, bank affinity, amount fit, and circuit-breaker state before routing a payment.

  • Gateway decisions under roughly 20 ms
  • Failover across 5 gateways with retry and idempotency protection
  • Kafka and Redis metrics over 1m, 5m, 15m, and 60m windows
NestJSTypeScriptPostgreSQLRedisKafkaRabbitMQDockerTypeORM

Attendance and sentiment analytics

MarkMe

Featured

A classroom attendance system using IoT cameras, face recognition, and separate dashboards for admins, teachers, and students.

  • Marks attendance for 60 students in under 10 seconds
  • 95%+ trial accuracy with repeated classroom camera captures
  • Alerts admins when a classroom camera disconnects for 5+ minutes
ReactNode.jsPrismaPostgreSQLPythonTensorFlowOpenCVSupabase

Disaster and crisis community platform

Eko

Featured

A community Q&A and crisis-help platform with semantic search for citizens, NGOs, and government dashboards.

  • Processes 5,000+ daily posts through a custom RAG pipeline
  • Retrieves relevant posts and web sources in under 3 seconds
  • Combines Gemini, embeddings, and MongoDB-backed workflows
Next.jsMongoDBClerkGeminiHugging Facefacebook/bart

Corrective RAG workspace

DevLM

A research and document assistant with ingestion for PDFs, GitHub repos, YouTube videos, websites, and knowledge-base chats.

  • Supports 10+ ingestion formats
  • Uses a dual-model flow for query refinement, HyDE, and final answers
  • Includes per-thread knowledge bases and admin moderation
Next.jsPostgreSQLPrismaQdrantGroqLangChainAI SDK

Full-stack learning management system

learn.dev

A multi-role LMS with course media, educator workflows, progress tracking, and payment-backed enrollment.

  • Clerk users synced to an application database through webhooks
  • Stripe webhook verification for idempotent enrollment
  • Cloudinary media uploads, lecture progress, and role promotion flows
ReactNode.jsMongoDBClerkStripeWebhooksCloudinary

Skills

Backend first, with enough product range to ship end to end.

Primary

Backend

Node.jsNestJSExpressFastAPIREST APIsTypeORM
Primary

System Design

MicroservicesDistributed SystemsCircuit BreakersIdempotencyKafkaRabbitMQ
Primary

Cloud & DevOps

AWSDockerLinuxCI/CDVercelMonitoring
Core

Data

PostgreSQLMongoDBRedisPrismaQdrantMySQL
Applied

GenAI

LangChainLangGraphRAGAI SDKEmbeddingsGroq
Product

Frontend

ReactNext.jsTypeScriptTailwind CSSRedux

GitHub

Public projects and activity.

Pulled from the public GitHub profile at build time, with the resume projects kept as the primary work section above. Blank days stay visible in the calendar, just like GitHub.

GitHub activity 460 contributions in the past one year

JunJulAugSepOctNovDecJanFebMarAprMay
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LessMore

softcrayons

Public project from Devendra's GitHub.

TypeScript00Updated 12 days agoLive

payment-gateway

Dummy payment aggregator

TypeScript10Updated 34 days ago

learn

Lms with Cloudinary, Clerk and Stripe integration

JavaScript00Updated 40 days agoLive

markme-web

Public project from Devendra's GitHub.

TypeScript00Updated 41 days agoLive

Contact

Have a backend-heavy product or internship role?

I am open to backend, platform, cloud, and product engineering opportunities where reliability and clear execution matter.