Madhu
G.B

Maker  ·  Bengaluru, India

I build things. Full products, end to end. 15+ years of engineering across Slack, Microsoft, and a handful of ventures I started myself.

Building Launchday  &  Mbox
LinkedIn ↗ X ↗ GitHub ↗

A little
about me

I build things. Full products, end to end.

I've co-founded three ventures and built several solo products end-to-end. Native macOS apps, backends, infrastructure. That founder instinct shapes how I approach everything: I care about the whole problem, not just my slice of it.

I've also worked at serious scale. At Slack, I architected the email interoperability platform that touched millions of daily active users. At Microsoft, I was on the SMB team inside Office 365 building collaboration tools.

That's the combination I find interesting. The discipline of large-scale engineering, applied to products I care enough to build myself.

Distributed SystemsArchitecture
Swift / SwiftUImacOS / iOS
PythonBackend
React / TypeScriptFrontend
GoBackend
Team LeadershipManagement
Product StrategyFounder

Things
I've built

Solo Products
Redact Screen
redactscreen.com · macOS · Commercial
Built this because I kept accidentally flashing embarrassing apps during screen shares. It intercepts the screen capture pipeline and streams a clean virtual camera feed in real time. The apps you want hidden just vanish, no interruption to your workflow.
Swift/SwiftUIGoScreenCaptureKitCMIOKit
Live
Mbox
getmbox.com · macOS · In Development
Email client I wished existed. Local-first, fast, and actually smart about what matters. Everything lives on your machine. Search is instant. AI runs locally. Built because I got tired of email apps that feel like they were designed for someone else.
SwiftSwiftUISQLite/GRDBMLXXPC
Building
Launchday
launchday.one · Late Alpha
The infrastructure layer I kept rebuilding for every app I shipped. Licenses, release channels, auto-updates, waitlists. One CLI, done. Built for indie developers who want to ship, not maintain plumbing.
GoCLISparkleLicense Infra
Alpha
URL Guardian
urlguardian.app · macOS · Live
Monitors your sites and tells you if something's down. Green, yellow, or red in the menu bar. No cloud, no subscription, no fuss.
SwiftmacOSMenu Bar
Live
CSP Reports
cspreports.dev
Collects and makes sense of CSP violation reports. Useful if you actually care about what your browser policy is blocking.
Live
Validate Email
validateemail.xyz
Does what it says. Validates emails so you're not storing garbage in your database.
Live
Shared Channel Support
sharedchannel.support · Discontinued
Support tooling for Slack shared channels. Good idea at the time, didn't go anywhere.
Discontinued
Work Projects
Email–Slack Interoperability
Slack · 2018–2021
Built the system that let email and Slack talk to each other at scale. Millions of daily users touching it. I owned it end-to-end, from the architecture call to keeping it running in production.
Distributed SystemsPythonEmail Infra
—
Augment Chrome Extension
Clusto · 2014–2016
Chrome extension that pulled context from your emails into whatever app you were using. Part of a bigger bet at Clusto on a universal data layer across business tools.
Chrome ExtensionJavaScript
—
RBAC & Dataset Engine
Maxim AI · 2024
Built RBAC from scratch and a dataset UI that could handle 100K+ rows without choking. Feels like a spreadsheet, syncs only what changed.
ReactTypeScriptRBAC
—
3-Click Discovery Engine
Guitarstreet · 2012
Recommendation engine for a niche music e-commerce store. Find what you want in 3 clicks. Social referral, proximity graphs, all built from scratch with no off-the-shelf shortcuts.
AlgorithmsE-commerce
—

Where
I've been

2025 – Present
Independent Now
Maker
Building Launchday and Mbox full-time.
Mar 2025 – Mar 2026
ShopBack
Staff Software Engineer
Merchants team, billing and settlement systems. Built report generation and an analytics feature that surfaced transaction data merchants actually cared about. Also automated a bunch of repetitive internal queries into self-serve pages, which cut on-duty overhead by 60% in the first quarter.
Sep 2024 – Mar 2025
Career Break
Paternity Leave
Took extended time off to be present for my family.
Mar 2024 – Sep 2024
Maxim AI
Principal Software Engineer
Built RBAC and a dataset UI that handled 100K+ rows without breaking a sweat. Worked with the team on system design, helped them think through the harder problems.
Mar 2022 – Feb 2024
Dyte (YC W21)
Principal Software Engineer
Owned technical onboarding for high-profile customers end-to-end, somewhere between solutions engineer and trusted advisor. Also led the Web SDK team and worked closely with product and design.
Sep 2021 – Mar 2022
Salesforce
Staff Software Engineer
Stayed on after the Slack acquisition, working with the same Interoperability team to migrate legacy Slack Apps to a modern codebase.
Sep 2018 – Sep 2021
Slack
Staff Engineer
Architected the email-Slack interoperability platform from the ground up. Millions of daily notifications running through it. Designed and built the whole thing, including the data sync layer between email and Slack.
Nov 2017 – Sep 2018
Astro → Slack
Engineer
Built AI-powered workplace communication apps across iOS, Android, Mac, Slack, and Alexa. Backed by Redpoint Ventures. We got acquired by Slack.
Jun 2016 – Oct 2017
Microsoft
Software Engineer II
SMB team inside Office 365, building collaboration tools for small and medium businesses. Good scale, lots to learn.
Apr 2014 – May 2016
Clusto
Co-founder & CTO
Co-founded and built a universal data layer across business apps. Launched the Augment Chrome extension. Built and grew the technical team from scratch.
Sep 2012 – Feb 2014
Guitarstreet
Co-founder
Niche music e-commerce, co-founded and built from scratch. 3-click discovery, social referral, proximity graphs. Every bit of it built in-house.
May 2010 – Jun 2012
ValleySpeak
Software Engineer
Built a web-based project management tool with Microsoft Project integration via a custom C# plugin. Also worked on Taskera, a social task and collaboration network. First real job, learned a lot.
University of Mysore
Bachelor of Science, Computer Science
2007 – 2010

What I'm
shipping

Independent. Building Launchday and Mbox full-time. Bengaluru, March 2026.

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This is a now page. Updated whenever I ship something.

Let's
talk

If you're working on something hard and need someone who can think across the whole stack, I'm interested. Engineering, product, or just a good conversation.

LinkedIn linkedin.com/in/madhugb X @madospace GitHub github.com/madhugb