Harsh.
Hello, I'm Harsh Karetiya

I'm Harsh,
a Software Developer

Software Engineer with hands-on experience in backend development, payment systems, scalable architectures, and analytics platforms.

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01 / Selected work

A few things I've built.

Sayso Analytics

Backend systems for analytics

Developed backend systems for an analytics dashboard handling large-scale production data and reporting workflows. Built cron jobs to fetch Stripe data, designed structured data pipelines, and optimized reporting systems across 250+ database tables.

RoleBackend Engineer
CategoryBackend Engineering
BigQuery Data Pipeline Cron Jobs

Day and Night IV

Scalable backend architecture

Built the complete backend architecture from scratch with scalable APIs, Stripe integrations, RBAC authentication, webhook handling, and notification systems. Implemented HIPAA-compliant backend practices.

RoleBackend Engineer
CategoryBackend Engineering
Stripe RBAC API Design

Resumedone

Billing and subscription infrastructure

Managed billing and subscription infrastructure. Integrated multiple Payment Service Providers (PSPs) including Stripe, PayPal, Dimoco, Razorpay, Revolut, Mollie, and Solidgate. Implemented multi-domain architecture.

RoleBackend Engineer
CategoryBackend Engineering
Payment Integration Subscription Management SQL
02 / About

Building scalable backend solutions.

I bridge the gap between complex data and actionable insights.

Software Engineer with hands-on experience in backend development, payment systems, scalable architectures, and analytics platforms. Skilled in designing APIs, integrating multiple payment providers, building secure subscription infrastructures, and developing data pipelines. Experienced with Node.js ecosystems, cloud-based backend solutions, database optimization, and modern web technologies.

January 2025–May 2026

Ciphernutz IT Service

Software Developer

Developed and maintained scalable web applications. Specialized in backend engineering with APIs, server-side logic, and system optimization. Worked on payment systems, analytics infrastructure, and subscription management solutions.

03 / Services

Technical solutions I provide.

Backend Engineering

Designing scalable APIs, server-side logic, and system optimization.

Payment Integration

Building secure subscription infrastructures and integrating multiple payment providers.

Data Engineering

Developing data pipelines for large-scale reporting systems and database optimization.

04 / Toolkit

Technologies I work with.

Languages & Frameworks

TypeScriptNode.jsExpress.js

Web & Backend

Nest.jsReact.jsNext.js

Infrastructure & Data

PostgreSQLDockerBigQuery
05 / Contact

Let's connect today.