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Working from home
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Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: YOLOAchievement: Pull Sharkx2Achievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: YOLOAchievement: Pull Sharkx2Achievement: Arctic Code Vault Contributor

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nkroker/README.md

Hey, I'm Nikhil 👋

Senior Tech Lead with 7+ years building fintech and payments infrastructure. I specialise in high-throughput distributed systems, PCI-DSS-compliant payment platforms, and developer tooling — mostly in Ruby on Rails, TypeScript, and Node.js.

Currently leading engineering at Yabx — a fintech platform powering loan and transaction services across Africa.

🔧 What I work with

AI Stack













 Languages







 Frameworks & APIs







 Cloud & Infra






 Data






 Dev Tools

🚀 Projects

dux — Webhook Forwarding Service

Self-hosted webhook proxy built in Ruby on Rails. Exposes global endpoints that forward to your local dev environment — like ngrok but for webhooks. JWT auth, Docker support, and a REST API for managing forwards.

tunnel — Local Tunnel Tool

TypeScript tool for exposing a locally running server over the internet. Built as a self-hosted alternative to ngrok.

kuber-installer-ubuntu — Kubernetes Setup Script

One-shot bash script to install and configure Docker + Kubernetes on Ubuntu 20.04+. Useful for spinning up dev clusters fast.

🤝 Open Source Contributions

Project Description
miromannino/Contributions-Importer-For-Github Import contributions from private/external repos into GitHub's contribution graph
moritzheiber/ruby-jemalloc-docker Ruby Docker image compiled with jemalloc for reduced memory overhead
apache/kvrocks Distributed key-value store built on RocksDB, compatible with Redis protocol

🔭 What's coming

Got some interesting things in the pipeline — working on projects around mesh-based NPU AI models, developer tooling powered by MCP, and a few experiments with on-device AI inference. Stay tuned, things are getting exciting.

📊 Things I've shipped professionally

  • Architected a reconciliation system processing $10M/year in multi-currency transactions with 99.9% uptime
  • Led zero-downtime migration of 1.4 billion MongoDB/PostgreSQL records
  • Cut transcription costs by 55% by integrating OpenAI speech-to-text at Aircall
  • Reduced API latency from 400ms → 80ms on a Rails monolith
  • Built custom MCP server for internal AI agent tooling

📬 Reach me

LinkedIn Medium Twitter Instagram

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  1. tunnel tunnel Public

    Self hosted tool for exposing local running server over the internal similar to ngrok

    TypeScript

  2. dux dux Public

    A simple Webhook forwarding app

    Ruby 3 2

  3. airr airr Public

    App for showing stats for air pollution and air quality index

    Ruby

  4. moritzheiber/ruby-jemalloc-docker moritzheiber/ruby-jemalloc-docker Public

    A Ruby Docker image, compiled with jemalloc support

    Dockerfile 20 7

  5. miromannino/Contributions-Importer-For-Github miromannino/Contributions-Importer-For-Github Public

    This tool helps users to import contributions to GitHub from private git repositories, or from public repositories that are not hosted in GitHub.

    Python 382 61

  6. kuber-installer-ubuntu kuber-installer-ubuntu Public

    This repo containes a bash file for installing and configuring container runtime Docker and Kubernetes on ubuntu 20.04 and higher

    Shell 2