Principal Product Manager

I build the platform products that everyone else ships on.

APIs, developer tools, IAM, CI/CD, observability — the infrastructure where getting it right means the whole organisation moves faster.

13+
Years in Product
8
Platform Products
400+
Engineers Served
€3.5M
ARR from Zero
About

From startup founder to enterprise platform strategy.

I've spent 13 years building and scaling technical products. The throughline is that I keep ending up at the intersection of platform infrastructure and business impact.

I co-founded Tripnet, a B2B SaaS platform, and built it from zero to ~€3.5M ARR across 6 markets. That experience taught me that the API is the product, not just a feature.

Today at Sabre, I own the Internal Developer Platform behind SabreMosaic — 8 foundation products that 400+ engineers depend on daily.

At a Glance

RolePrincipal PM, Sabre
FocusPlatform & API Products
Team~20 engineers, 2 PMs
ScopeGlobal (US, EU, India)
EducationMBA, Reforge
LocationKraków, Poland
Case Studies

Selected work.

Platform products that shaped how engineers build, ship, and operate at scale.

Sabre · SabreMosaic
Platform StrategyIDPIAM

Building the Internal Developer Platform

Defined product strategy for 8 foundation products — IAM, CI/CD, Envoy API Gateway, observability — forming the architectural backbone for 400+ engineers.

8
Products
400+
Engineers
800 TPS
Auth
3
Continents
Sabre · Developer Tools
API StrategyData Analysis

Global API Deprecation Program

Led deprecation of 25 APIs. Analysed hundreds of millions of monthly requests in Tableau. Achieved 90% migration in 18 months.

25
APIs
90%
Migrated
100s M
Requests/mo
18 mo
Timeline
Sabre · Dev Studio
Developer ExperienceUser ResearchDX

Redesigning the Developer Experience

Led a strategic redesign of Sabre's developer portal used by architects and engineers. Conducted extensive user research to uncover onboarding friction, then redesigned around API discoverability, guided first-integration flows, and interactive documentation.

40%
Onboarding Reduction
100s
Developers Impacted
25+
APIs Documented
TTFI
North Star Metric
Tripnet · Co-founder
Zero-to-OneB2B SaaSAPI

Zero to €3.5M ARR: B2B SaaS Platform

Built a hotel booking platform from scratch. Consolidated supplier feeds, launched REST API with 20 integrations, scaled across 6 markets.

€3.5M
ARR
6
Markets
20
Integrations
200+
Interviews
Get in Touch

Let's talk.

Exploring what's next — particularly interested in companies where platform and DX sit at the core.

marian.biskup@gmail.comLinkedIn