Fractional CTO · Technical advisory

Technology,
with a bearing.

Hands-on technology leadership for businesses where product, platform and risk have become the same conversation.

Talk to Gareth
20+ yearsBuilding and leading technology
BillionsIn card volume engineered for
99.99%Production platform uptime
01 / The work

Senior technical judgement, without the full-time hire.

I work with founders, boards and leadership teams at moments when technology needs a clear owner—not another slide deck.

A

Fractional CTO

Ongoing technology leadership shaped to the stage and stakes of the business.

  • Technical strategy and roadmaps
  • Engineering leadership and hiring
  • Board and investor communication
B

Platform & risk

Practical architecture and assurance for systems that need to earn trust.

  • Architecture and delivery reviews
  • PCI DSS, DORA and operational resilience
  • Security and technical due diligence
C

AI & operations

Useful AI systems grounded in real workflows, controls and measurable outcomes.

  • AI strategy and capability design
  • Workflow automation
  • Agentic systems and operating models
02 / The approach

Find the position. Set the course. Make it real.

The work moves quickly from ambiguity to decisions your team can execute.

01

Orient

Get a truthful picture of the product, architecture, team and constraints—especially where the current story and reality have drifted apart.

02

Decide

Turn competing priorities into a small number of defensible choices, with risk and trade-offs made explicit.

03

Deliver

Stay close enough to implementation to make sure the strategy survives contact with the work.

The person behind 20 East

Gareth Saul

I’m a CTO and engineer with more than two decades of experience building teams, products and platforms—from mapping and travel software to regulated payments and crypto-asset services.

I’m most useful where deep technical context, commercial judgement and operating discipline all matter at once. I can work at board level in the morning and with the engineers shipping the system that afternoon.

PCI DSS Level 1 platform architecture
Regulated fintech & payments
Secure cloud & cryptographic systems
Engineering teams and operating models
Full background at garethsaul.com ↗

Start with the problem

Need a steady hand on the technology?

Tell me where things are stuck, what’s at stake and what a useful first conversation would cover.

hello@garethsaul.com