I build backend-heavy products and see them through to production.
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Marketing and sales
Before I wrote software for a living, I spent six years in marketing and sales: on the ground at events, generating leads, and as a marketing intern at Shell.
Talking to customers got me interested in the problems behind what they were asking for. I wanted to understand how a solution worked and learn to build it myself.
I started teaching myself to program in 2021 and finished a degree in mechanical engineering at MVJ College of Engineering in 2022.
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Software developer, Getin Solutions
My first engineering role was building two enterprise products for manufacturing customers: an HR system and a production-operations system, with Angular, Django and PostgreSQL.
The work went well beyond code. I took features from requirements to rollout across more than 20 customer deployments, including configuration, testing, troubleshooting and support after go-live.
Some of the problems were properly hard. Real-time data from connected devices fed live dashboards, and I designed an algorithm that works out which shift an employee is on, across fixed, rotational and automatic shift patterns, including shifts that run past midnight.
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Co-founder and software engineer, Pivotr
In June 2025 I co-founded Pivotr. Our product, Aria, is a modular ERP for businesses. I architected and built two of its core modules, Asset Management and Inventory Management, with TypeScript, NestJS, tRPC, Prisma, PostgreSQL and Next.js.
Owning a product meant owning everything around it. I took Asset Management through 12 customer deployments, built inventory proofs of concept around prospects’ real workflows, and set up an AI-assisted development workflow in which linting, type checks and static analysis gate every change. When the company needed outreach tooling, I built that too: three small tools, each solving the next problem we hit.
“The asset management product I was selling was built by Karthik, and so were the outreach tools I used to sell it.
“We went into customer meetings together, and more than once what we heard there turned into a working demo for that prospect.”
Pivotr continues, and Aria is still in use by its customers. After 15 months as a co-founder, I’m returning to what I enjoy most: building software alongside a strong engineering team.
– now
Since leaving Pivotr I’ve been building in public: workclock, a library for business-time calculations in Rust, Python and JavaScript; Job Matcher, a self-hosted tool that reads job boards and scores each listing against my resume; and Blinkql, an in-browser SQL workbench, still early, with its first outside contributors.
Next, I’m looking for a full-stack role with a backend focus at a product company or scale-up, where I can own features end to end and learn from engineers better than me.
The first four have full case studies: the problem, what I did, and how it turned out.
The asset and inventory modules of a modular B2B ERP, built from data model to deployment. The Asset Management module went through 12 customer deployments.
TypeScript, NestJS, tRPC, Prisma, PostgreSQL, Next.js, Docker
A self-hosted tool that watches the job boards I follow, filters listings by location and experience, and scores each one against my resume with an LLM. Runs are queued, idempotent and budget-aware.
TypeScript, Bun, NestJS, Next.js, Effect, PostgreSQL, BullMQ, Docker
Business-time arithmetic (working hours, SLAs, shifts, holidays and time zones) with a Rust core and bindings for Python and JavaScript. Published on crates.io, PyPI and npm.
Rust, Python (PyO3), WebAssembly, TypeScript
An in-browser SQL workbench: open a CSV, Parquet or JSON file and query it on your own machine, with no upload. Early, built in the open with a public roadmap and its first outside contributors.
TypeScript, React, DuckDB-WASM, Apache Arrow
Three small internal tools built one after another as Pivotr's outreach needs grew: Pivotr-Mailer, then TermiSend, a terminal app for personalised email campaigns with audit logging, then MailSense, for importing and verifying lead lists.
TypeScript, Bun, Ink, AWS SES, SvelteKit, Hono, SQLite
I maintain workclock and fiscalclock, published on npm, PyPI and crates.io, and send fixes to projects such as t3code, doory and huggingface.js.
| Week of 27 Sept | Week of 4 Oct | Week of 11 Oct | Week of 18 Oct | Week of 25 Oct | Week of 1 Nov | Week of 8 Nov | |
|---|---|---|---|---|---|---|---|
| Sunday | 4 Oct: no activity | 11 Oct: active | 18 Oct: active | 25 Oct: active | 1 Nov: active | 8 Nov: today, nothing yet | |
| Monday | 5 Oct: no activity | 12 Oct: active | 19 Oct: active | 26 Oct: active | 2 Nov: active | ||
| Tuesday | 6 Oct: no activity | 13 Oct: active | 20 Oct: active | 27 Oct: active | 3 Nov: active | ||
| Wednesday | 7 Oct: no activity | 14 Oct: active | 21 Oct: active | 28 Oct: active | 4 Nov: active | ||
| Thursday | 1 Oct: no activity | 8 Oct: no activity | 15 Oct: active | 22 Oct: active | 29 Oct: active | 5 Nov: active | |
| Friday | 2 Oct: no activity | 9 Oct: no activity | 16 Oct: active | 23 Oct: active | 30 Oct: active | 6 Nov: active | |
| Saturday | 3 Oct: no activity | 10 Oct: active | 17 Oct: active | 24 Oct: active | 31 Oct: active | 7 Nov: active |
I started building in college, around 2020, because I wanted to earn some money: first Fiesta Styles, a fashion dropshipping store on Wix, then a movies and shows website on WordPress. That’s when I found I liked building software, and my marketing jobs had given me ideas I needed deeper technical knowledge to build. Now I talk to users before I write code, keep designs simple, make them hard to break, and stay with what I ship after launch. Outside work, I build side projects, still play football and go running regularly.
I’m available now. The fastest way to reach me is email.
You can also ask your own AI about me. Open ChatGPT (opens in a new tab), Claude (opens in a new tab) or Perplexity (opens in a new tab) with a prompt that reads this site first, so the answers come from what’s here.
Read https://karthik.nz/llms-full.txt, the website of Karthik Parameshwara, a software engineer looking for a role. Summarise Karthik’s experience, strongest projects and the kind of role Karthik fits best. Use only what that page says, link the page each point comes from, and say so if something isn’t covered.
Paste it into any assistant that can read a web page.
A read-only MCP server answers with the same text as these pages. Its address is https://karthik.nz/mcp.
In Claude Code, run:
claude mcp add --transport http karthik-nz https://karthik.nz/mcp