~/askwhyharsh

$ Harsh Singh @askwhyharsh

backend fullstack engineer / MERN & Go

I'm a backend / fullstack engineer with 4.5 years building products and services, currently open and actively looking for freelance, contract, and full-time roles. My full-time work spans Alive.house, Qiro.fi, and Caddy Finance. Most of it lives between backend APIs, fullstack product work, and Go services for real-time and event-driven systems.

Some highlights: 4.5 years building fullstack products, backend services, and developer tools; Shipped production systems across Caddy Finance, Qiro.fi, and Alive.house; Currently open to freelance and full-time roles; built LinkCollect, a social bookmark tool with 3,000+ active users.

How I got here →

Experience

Caddy Finance / Founding Fullstack Engineer

Mar 2025 — 2026

Remote

Built core product infrastructure from the ground up — backend APIs, data models, and the fullstack surfaces that power the platform. Owned end-to-end feature delivery across Node.js services, database design, and React frontends.

Qiro.fi / Founding Engineer

Jan 2024 — Feb 2025

Remote

Designed and shipped Qiro Underwriting Protocol V1 — a lending platform with credit assessment and risk-tiered lending pools. Built backend services, API integrations, and fullstack flows for lending, repayment, and liquidation. Integrated third-party inference and verification services for privacy-preserving credit scoring.

Alive.house / Fullstack Developer

Mar 2022 — Jun 2023

Remote

Built marketplace infrastructure for the Alive.house NFT platform — backend services, API design, and frontend integrations for listings, sales, and royalty distribution across primary and secondary market trades.

Alfa Club (@FriendDotSpace) / Backend Engineercontract

2025

Remote

Contract work building a custom Go indexer for Hyperliquid — real-time detection of order fills and liquidation events from node data, with structured event publishing to Kafka for downstream trading pipelines.

Stack

MERN / MongoDB, Express, React, Node.js, TypeScript
Backend / Go, NestJS, PostgreSQL, Redis, Kafka, REST & WebSockets
Frontend / React, Next.js, Tailwind, Chrome Extensions
Infra / Docker, AWS, event pipelines, real-time systems

Elsewhere