Headline

Backend & AI Engineer @ GrowthSchool (Sequoia, Owl Ventures backed) | Payment infra + Multi-LLM orchestration (89k+ daily inferences) for 1M+ users | Node.js · TypeScript · AWS | Ex-Founding Engineer @ Zircle 🚀

About

I build backend systems that touch money and systems that touch models, and I've learned those two worlds have more in common than people think: both need to be reliable, observable, and boring in the right places. I'm currently an SDE at GrowthSchool, where I own backend and payment infrastructure for a platform serving 1M+ learners. That means designing Razorpay payment fulfillment pipelines that survive failure gracefully (AWS Lambda + SQS + DLQs), and building a multi-LLM orchestration layer that routes 89k+ daily inference requests across GPT, Claude, Gemini, and DeepSeek with streaming and function calling. Before this, I was a founding engineer at Zircle, where I built an IoT platform from 0 to 1, 200+ sensors, real-time monitoring, 10k+ monthly active users the kind of role where you write the backend architecture and then debug it in production the same week. What I care about: → Systems that fail safely, not silently → Shipping fast without treating reliability as a "later" problem → The unglamorous parts of AI engineering, routing, retries, cost, and latency that make LLM products actually usable at scale Tech I work in daily: Node.js, TypeScript, PostgreSQL, AWS, Kafka, Prisma, and increasingly the LLM orchestration layer (LangChain, LangGraph, RAG, OpenRouter). Always open to conversations about payment systems, distributed architecture, or production GenAI feel free to connect

Location

Bengaluru

AI stack

anthropic apis

claude code

cursor

gemini

hugging face

langgraph

Work experience

Software Engineer at GrowthSchool, Aug 2025 - Present · 1 yr 2 mos, Bengaluru, Karnataka, India, – Architected backend services for GrowthSchool V3, supporting payment workflows, authentication, and core API infrastructure for a platform serving 1M+ learners. – Designed and implemented a Razorpay payment webhook and fulfillment pipeline using AWS Lambda, SQS, and Dead Letter Queues, enabling reliable asynchronous processing and recovery of failed payment fulfillment events. – Engineered payment transaction validation and subscription lifecycle workflows processing 26k monthly transactions, reducing payment errors by 38% and improving reliability of user access fulfillment. – Built and optimized 30+ REST and GraphQL APIs using Node.js, Express.js, Prisma, and PostgreSQL, improving API response times by 49%. – Developed a multi-LLM routing layer using OpenRouter to orchestrate GPT, Claude, Gemini, and DeepSeek, handling 89k daily inference requests with streaming, function calling, and prompt orchestration. – Implemented production Generative AI workflows including RAG pipelines, model routing, streaming responses, and AI workflow automation for enterprise-facing products. – Worked with Kafka and event-driven processing for asynchronous service communication and backend workflows.

Software Engineer (Founding Engineer) at Zircle (backed by 100X.VC), Jun 2023 - Aug 2025 · 2 yrs 3 mos, Delhi, India, -Engineered Zircle AMC from 0-to-1, an enterprise IoT platform for solar plant management with 200+ sensors, real-time monitoring, and operational dashboards across 50+ installations serving 10k+ monthly active users. – Designed backend services using Node.js, GraphQL, Prisma, and PostgreSQL within an event-driven microservices architecture, reducing API response times by 35%. – Optimized database and GraphQL query patterns to improve backend performance and platform reliability for production workloads. – Built reusable frontend components reducing development time by 30% and led Webflow marketplace optimization, improving page load time by 45%+ and Core Web Vitals

Web Developer at Expelee, May 2023 - Jul 2023 · 3 mos, Dubai, United Arab Emirates, Corporate Website Development Project : • Led end-to-end development of the official company website, from conceptualization to implementation. Personally designed and coded the website, ensuring alignment with company branding and objectives. Additionally, replicated the website for the company’s branch "Elevate Clicks", demonstrating versatility in project management and execution.

Education

BS Degree in Data Science and Applications, Mathematics and Computer Science, Indian Institute of Technology Madras

Bachelor of Business Administration - BBA, Business Administration and Management, General, Gurukula Kangri Vishwavidyalaya

Public links

github: https://github.com/Himanshu7614