GTM engineer. I build outbound systems that book meetings, then open source the reusable parts.
10+ years in B2B lead gen. Started as a cold caller. Built an agency in 2018, ran execution for a media agency and grew that team to 75+, then left to build martechs.io: signal-based outbound and programmatic ABM for mid-market and enterprise teams in the US, UK and DACH.
Last 12 months, across clients: 2,700+ demos booked for a payroll company, $250K of pipeline reactivated for one enterprise account, $30K new MRR for a retail trading company. 100+ B2B teams served.
| Repo | What it does | Real run |
|---|---|---|
| mcp-adopters | Ranked outreach list of people adopting MCP, from the GH Archive mirror, ranked by Jev, emails under a hard cap | 713 actors to 14 emails, $2.81. Full year: 104,121 people to 315 ICP companies, about $13 |
| spam-leadgen-pipeline | Your spam folder is a lead list. Classifies senders, audits their DNS, drafts the reverse pitch | 115 emails to 19 ICP senders, about 1 cent |
| account-enrichment-pipeline | Domains and titles in, intel card plus verified contacts and email gateway out. Never pays twice | about $0.13 per account |
| linkedin-competitor-icp-scorer | Scores everyone engaging with a competitor's posts against your ICP | 136 engagers, 2 qualified |
| LinkedIn-Profile-Activity-Intel | Is this person active on LinkedIn right now, before you spend a connection request | about $0.04 per profile |
| Repo | What it does |
|---|---|
| gtm-prospecting-system | 5 best customers to next 500 prospects. 20 Claude Code skills, spend cap, approval gates |
| GTM-Skills | 58 GTM playbooks for Claude Code, Codex and Cursor. npx skills add automatewithuday/GTM-Skills |
| microsite-pipeline | One lead in, 8-page personalised sales microsite out. Drops any field with no source |
| GTM-Public-Traded-AI-Accounts | Screens SEC filings for small public companies, 15 signal types with evidence |
| Cybersecurity-B2B-Lead-Gen-Flywheel | IAM, PAM, DevSecOps and GRC buying signals from Reddit, LinkedIn and job boards |
| syndication-gtm-signal-engine | Evidence-first account scoring for syndication, retargeting and outbound |
| gtm-flywheel, gtm-os-kit | Frameworks and a Company OS starter for Claude Code |
Rules across all of them: bring your own keys, no tool contracts, no fabricated data. Every number above comes from a logged run in that repo's README.
Stack: Claude Code, Supabase, n8n, Playwright, Apify, Prospeo, Smartlead. Clay when the client wants Clay.
- Site: martechs.io · free TAM Snapshot there
- X: @UdayKang7
- LinkedIn: uday-singh-kang