Experience

Backend, distributed systems, applied AI and email infrastructure. A closer look at the platforms I’m building and the teams I’ve helped ship.

Selected engineering work

Hakopod

Current · Builder & lead contributor · Open-source application platform

  • Built a Go control plane with durable PostgreSQL queues, revision checks and idempotent retries so deployments can resume after client disconnects and service restarts.

  • Implemented Kubernetes service isolation, private networking and rolling deployments, with failed-release recovery workflows and an auditable rollback history.

  • Added database provisioning and recovery workflows using native operators, scoped credentials, verified TLS connections and separate restore targets.

SyneHQ

Current · Founder & core engineer · AI analytics and data infrastructure

  • Built an LLM analytics workspace using database schemas and business definitions as context. Users can inspect the generated SQL and approve selected agent actions before they run.

  • Built Kelvo, a Go analytics gateway with DuckDB federation, now in developer preview. Designed durable jobs with NATS JetStream, isolated query processes and Arrow results over mTLS.

  • Built Rabbit, an open-source Go TCP tunnel with persistent port assignments and reconnect support, to connect private databases to the platform.

  • Built Lumen, a Go telemetry service with tenant isolation and HTTP/2 ingestion, using PostgreSQL for accounts and API keys and ClickHouse for event and session analytics.

NarStri Health Technologies

One-year engagement · Founding Engineer · Health AI

  • Helped launch the first version of a health AI product, connecting wearable data with analysis of longevity markers.

  • Owned the customer-facing product: designed WhatsApp card flows and deep links across the experience, and handled wearable integrations in the Flutter mobile app.

boring.notch

Created August 2024 · Creator · Native macOS · Swift, SwiftUI, AppKit

  • Created an open-source app that turns the MacBook notch into a home for music controls and everyday tools. Reached 10.9K GitHub stars and 2.2M+ GitHub release downloads.

  • Built the original app in Swift and SwiftUI, then developed it with an open-source contributor community.

Xem · xem.email

Founder & product engineer · Open-source email infrastructure

  • Built an email platform in Go for campaigns, automations and SMTP delivery, backed by PostgreSQL and Redis/Asynq workers.

  • Implemented a durable sending outbox, suppression checks and delivery feedback processing, with explicit handling for uncertain sends to avoid blind retries.

Professional experience

CodeMarks Enterprises

Dec 2023 – Sep 2026 · Senior Full Stack Developer · Bengaluru, India

  • Led backend and payment-rail engineering for Zunofy, covering multi-currency accounts, transfers, KYC/AML integrations and card workflows.

  • Built production services with Go, Python, Django, Node.js and PostgreSQL, alongside React/Next.js web applications and Flutter mobile work.

  • Moved services to a Docker and AWS microservices setup and handled code reviews, performance work and production reliability.

Wealth I/O · Purple Rocket Technologies

Jan 2022 – Nov 2023 · Lead Engineer · Virginia, USA

  • Built AI-assisted tools for lead capture, prospect analysis and follow-ups, including the Anna assistant using FastAPI, LangChain and MongoDB.

  • Built data ingestion and CRM integrations in Go and TypeScript, and a subscription service with Stripe and NestJS.

  • Ran AWS infrastructure, added Grafana and Prometheus monitoring, and tested service behaviour under load with k6 and JMeter.

EPYC ThoughtWorks

Jun 2020 – Dec 2021 · Frontend Web Developer · New Delhi, India

  • Built Nuxt applications with search, maps and custom-domain support, including automated SSL through Nginx and Lua.

  • Led delivery of a nutritionist platform for appointments, diet plans and PDF generation; maintained it independently for a year after leaving.

Technical skills

Backend

Go, Python, TypeScript, SQL · FastAPI, Django, Node.js, NestJS · REST, gRPC, WebSockets

Systems & data

PostgreSQL, Redis, ClickHouse, DuckDB, MongoDB, NATS JetStream · Durable queues, idempotency, reconciliation, multi-tenancy, TCP networking

Platform

Kubernetes/K3s, Docker, AWS, HAProxy, Nginx · CI/CD, rollout recovery, Grafana, Prometheus

AI & product

LLM integration, RAG, LangChain, LangGraph, MCP, semantic models, SQL/Python execution · React, Next.js, Swift/SwiftUI, Flutter

Education

Indian Institute of Technology Guwahati

2023 – 2027 expected · Honours degree in Artificial Intelligence · In progress

Indira Gandhi National Open University

2022 – 2025 · Bachelor of Computer Applications

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Harsh Vardhan

Senior Software Guy

3:59 AM

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Available

a man smiling for the camera

Harsh Vardhan

Senior Software Guy

3:59 AM

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Available

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