MJjarzebowsky.tech
13 YEARS IN THE FIELD

I ship software
that holds up

Engineer & IT leader with 13 years of experience. Deputy IT Director at Blue Energy and Founder & CTO of 8+ security, AI and dev-tooling products.

Open to CTO / Head of Engineering / Security leadership roles.

Y CombinatorLooking to join a Y Combinator startup.
Marcin JarzębowskiOPEN TO WORK
Marcin JarzębowskiDeputy IT Director / Founder & CTO / Security
EXPERIENCE13 YEARS
TEAM LED20+ ENG
PRODUCTS8+
FOCUSSEC/AI/DEVTOOLS
[01] SKILLS & STACK

What I work with

A decade of shipping enterprise systems and products - and breaking them before attackers do.

LANGUAGES & FRAMEWORKS

  • TypeScript / JS
  • Java
  • C# / .NET
  • React / React Native
  • Node.js
  • Python

CLOUD & DATA

  • Azure
  • AWS / Cloudflare
  • SQL Server
  • PostgreSQL
  • Docker / Kubernetes
  • CI/CD / DevOps

SECURITY & LEADERSHIP

  • AppSec / Threat Modeling
  • Secure SDLC
  • Pentesting
  • Solution Architecture
  • Team Leadership (20+)
  • AI / LLM Integration
[02] SELECTED WORK

Products I have built

8 shipped products across security, dev tooling and AI.

[03] EXPERIENCE

Where I have worked

13 years across engineering, consulting and IT leadership.

01.2019 - NOW

Founder & CTO @ Own products (Silker AI, CyberSonar24 & more)

Founded and built 8+ products in security, developer tooling and AI - from zero to launch. Owning product, architecture and engineering across web, mobile and infrastructure.

FounderCTOSecurityAISaaS
09.2016 - NOW

Deputy IT Director @ Blue Energy sp. z o.o.

Lead a 20-person software development & AI team, owning delivery, architecture and secure SDLC. Delivered projects for the largest Polish enterprises and state-owned groups - including Orlen, NFZ and KGHM - acting across consultant, engineer and manager roles.

LeadershipArchitectureAIPublic SectorSecurity
05.2013 - 08.2016

Software Engineer / Consultant @ Commercial projects

Delivered commercial software and consulting on enterprise systems - Java, .NET, SQL Server and large-scale backends - building the foundation for later architecture and leadership work.

Java.NETBackendConsulting
[04] GITHUB

Always shipping

A year of commits across products, clients and experiments.

github.comVIEW GITHUB →
GitHub contribution graph
[05] CONTACT

Let's build something

I am looking for the right startup to go all in on. If that is you, reach out.

jarzebowski.marcin@gmail.com →