I build useful software—from intuitive interfaces to reliable systems and AI-powered workflows.
I’m Nishant Kumar, a product engineer working across MERN, Node.js, React, Rust, Python, and GenAI. I turn business problems into practical products, choosing technologies based on what the solution needs.
Engineering that moves a product forward.
From the first useful interface to the systems behind it.
Product engineering
Turn a user need into a complete feature, connecting clear interfaces, APIs, and data so a team can ship and improve the product.
Backend engineering
Turn product requirements into clear APIs, async services, and dependable data flows.
AI engineering
Make information easier to use with source-grounded answers, LLM integrations, and practical automation.
Performance & reliability
Design for slow dependencies and failures with bounded concurrency, timeouts, and clear error handling.
Built to solve. Open to explore.
Real projects. Practical decisions. Source code you can inspect.
ZenPlay
A quieter home for your YouTube library.
A React interface connected to a Rust API for authentication, playlists, favorites, and embedded playback. PostgreSQL keeps each user's library organized.
PagePilot
From a long article to a grounded conversation.
Extract readable web content, stream AI summaries, and ask questions with passage citations. A Rust backend coordinates extraction and provider requests; reading history stays in the browser.
DevGraph
Find developers through the work that connects them.
Resolve skills and technologies into graph filters, then traverse connected projects and companies with parameterized Cypher queries. React makes the results easy to explore.
A workspace for engineering evidence.
Explore the behavior of a system, one decision at a time.
Backend Performance Lab
Explore concurrency, latency, and throughput through repeatable experiments.
Run a deterministic model of blocking and async scheduling. Inspect virtual throughput, latency, and request traces with the methodology alongside the results.
Open simulationAI Engineering Studio
A workspace for turning sources into useful, verifiable answers.
Extract public webpages, inspect text documents, and explore keyword retrieval without a key. Generate source-cited answers through a transient backend proxy using your own provider key.
Open StudioReliability Playground
Make the behavior of a failing system visible and understandable.
Step through temporary failures, timeouts, circuit breaking, and reconciliation. Replay a transaction to see how an idempotency key prevents duplicate work in the model.
Open simulationGo a layer deeper.
Source-backed notes on concurrency, AI grounding, and connected data.
Async is a boundary, not a capacity claim.
How PagePilot separates fetching, parsing, and generation—and what those limits do and do not prove.
Put the evidence boundary on the server.
A closer look at organization scope, retrieved passages, and citation validation in AgentOps AI.
Search the relationships, then explain the match.
The graph model and query boundaries behind DevGraph's developer discovery experience.
Hi, I’m Nishant.
I connect product needs, user experience, and engineering to build software people can use.
I’m Nishant Kumar, a product engineer working across MERN, Node.js, React, Rust, Python, and GenAI. I turn business problems into practical products, choosing technologies based on what the solution needs.
My toolkit includes MongoDB, Express, React, and Node.js (MERN), alongside Next.js, Rust, Python, and GenAI. I can contribute across interfaces, services, data, and automation to deliver a complete solution that a team can understand, maintain, and improve.
A construction workforce portal at TechTown Properties, alongside personal projects spanning full-stack applications, Rust systems, and AI-assisted workflows.
B.Tech, Engineering
Aryabhatta Knowledge University, Patna
TechTown Properties
FreelanceBuilding a construction workforce portal across Next.js interfaces, Rust/Axum services, and AWS EC2 deployment.
Darklake Labs
ContractDeveloped React interfaces and Rust backend services, integrating APIs into end-to-end product features.
Turbin3
FellowshipPracticed Rust systems fundamentals, Solana development, testing, and debugging through hands-on work.
ZERON
EmploymentBuilt reusable React and TypeScript interfaces and Node.js/Express API features across the application stack.
TeamCognito
EmploymentContributed frontend features with JavaScript, React, TypeScript, and Material UI in a collaborative Git workflow.
A product to build.
A problem to work through.
Have a project in mind, a role on your team, or an engineering idea worth exploring? Let’s start a conversation.
technishant108@gmail.comTurning complex engineering problems into reliable, scalable products.
Explore my GitHubView resume