Jacek Serafinski — PRODUCT & TECHNOLOGY

Role: Technology/Product Advisor · Fractional CTO

Location: Tampa, FL, US

LinkedIn: linkedin.com/in/serafinski

Years of Experience: 20

Background

Jacek Serafinski is an entrepreneur, engineering executive, and software architect with 20 years building technology and product organizations. His track record spans senior technology and product leadership roles at Afterpay/Block, Atlassian, and Silverrail. He now advises growth-stage fintech and payments companies on technology strategy, product-market fit, and engineering execution through Railworks Advisory.

Areas of Focus

Focus Areas: Technology, Product, AI Strategy, Vendor Integration, Software Architecture

Engagement Model: Project-based, Retainer, Fractional

Client Profile: Growth-stage fintech and payments companies (Series A–C), enterprise technology businesses entering financial services, and organizations that need senior technical or product leadership on a defined-term or fractional basis.

Geographic Scope: North America, Europe, Australia/New Zealand