Filip BrankiewiczCTO & Co-Founder · Engineering Leader

Build the team. Build the system.

I build engineering organizations and still personally build the hardest systems—from company-level architecture and delivery to production ML, infrastructure, web, and mobile.

  1. 01CTO / Head of Engineering / VP of Engineering
  2. 02Founding Engineer / Technical Lead
  3. 03Senior / Principal / AI Engineer

Leadership

Build the engineering function.

At Guider AI, I grew engineering from 0 to 10+, established squad ownership, and led the team from inception through acquisition by Thrive Learning.

Organization · Delivery · Acquisition

Systems

Own architecture at company scale.

I owned architecture and delivery across Guider’s product suite, scaled it to millions of users, and led cloud, data, and instrumentation decisions across GCP, Azure, MongoDB Atlas, BigQuery, and Mixpanel.

Architecture · Platform · Data

Build

Stay close to the hardest systems.

At Liken, I built the production platform end to end: biometric identity, liveness and anti-spoofing, deepfake detection, event-driven APIs, infrastructure, billing, and both client apps.

ML · Backend · Infrastructure · Clients

Experience

Software leadership and engineering, newest first.

  1. Liken

    CTO & Co-Founder

    Sole engineer behind a production biometric identity and AI-content-verification platform.

  2. Guider AI

    Founding Head of Engineering

    Built the engineering function and platform from inception through acquisition by Thrive Learning in July 2025.

  3. Externet

    Founder & Managing Director · Software

    Built a digital agency delivering custom applications, online stores, and web platforms for automotive, retail, and e-commerce clients.

  4. Cognizant

    Full Stack Engineer · Boots

    Full-stack engineering for the Boots client account.

  5. SatisfactionScript

    React / React Native Developer

    Web and mobile product engineering.

  6. Globe Group

    Web Developer

    Web development across client projects.

Technical evidence

Current systems I have personally designed, built, and operated at Liken.

Identity

Face and voice recognition using 512-dimensional AuraFace and 192-dimensional WeSpeaker ECAPA-TDNN embeddings, served through FastAPI with per-user centroid models.

Content provenance

Deepfake and AI-content detection fusing six signals into one verdict engine, plus SHA-256 and perceptual dHash provenance signing.

Platform

An event-driven backend with 37 Hono API endpoints, JWT/JWKS authentication, RBAC, rate limiting, webhooks, and Stripe entitlements.

Operations

Six services across Fly.io, Vercel, and Expo/EAS with GitHub Actions, automated releases, and a shared design-system monorepo.