LM·2609
Leonardo Majowka

Engineering Leader · AI Champion · Angel Investor

I write the check
and the code.

Twenty years building products and thirteen leading engineering teams — most recently Threat Intelligence platforms at Rapid7. I invest in early-stage founders, then build alongside them.

Leonardo Majowka
L. Majowka
Builds SYS 01
20+ yrsBuilding products
13 yrsLeading engineering teams
03Products live in public
Rapid7Threat intelligence at scale
Backs SYS 02
Pre-seedAnd seed stage
Hands-onNot just capital
AIDev tools, security, fintech
Every onePitches read personally

The short version

I lead engineering organizations that ship mission-critical products at scale. These days I back founders at the earliest stage — writing a check, then getting into the codebase and the architecture with them when that is what actually moves the product.

Most recently Senior Software Engineering Manager at Rapid7, running Threat Intelligence platforms and putting agentic AI into real security investigation workflows. Before that VP of R&D at Blings.io, where I owned technical strategy and took the product from early stage to enterprise-grade.

I care about strong engineering culture, pragmatic architecture, and growing the people I work with. I have spent as much time hiring, mentoring, and unblocking teams as I have writing systems — and I think that is the part that compounds.

Three of my own products are running in public right now. That is deliberate: I would rather be judged on what is live than on what is claimed.

Service record

PresentOngoing

Angel Investor — Early-stage

  • Invest in early-stage founders and projects, primarily in AI and automation.
  • Advise on technical strategy, architecture, and scaling decisions.
  • Build hands-on alongside founders when it moves the product forward.
Rapid7Prior

Senior Software Engineering Manager

  • Led multiple teams building mission-critical Threat Intelligence platforms.
  • Drove adoption of agentic AI to accelerate security investigation workflows.
  • Partnered with Product and Security Research for end-to-end delivery.
Blings.ioPrior

VP of R&D

  • Owned technical strategy and execution across full-stack teams.
  • Scaled the product from early stage to enterprise-grade maturity.
  • Implemented modern CI/CD, observability, and cloud infrastructure.
EarlierMultiple

Senior Engineering & Leadership Roles

  • Led backend, frontend, and platform initiatives across multiple companies.
  • Delivered complex distributed systems with measurable business impact.
  • Mentored engineers and built a culture of shipping.

Where I'm useful

Engineering leadership

Building and scaling teams, technical strategy, and delivery that holds up under load.

Agentic AI & automation

Putting LLMs and autonomous agents into real product and security workflows, not demos.

Full-stack & cloud

Distributed systems, event-driven architecture, and infrastructure that stays cheap to run.

Working knowledge

TypeScript Python React Node.js AWS Kubernetes PostgreSQL Distributed systems Event-driven architecture AI / ML Blockchain CI/CD
SHEET 01·04