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Fractional CTO

Fractional CTO Services

Strategic Technology Leadership Without Full-Time Commitment

1000+ Engineers Led
20+ Years Experience
4 C-Level Roles
Thomas Prommer - Technology Executive
1:36
Thomas Prommer - Technology Executive
Expert Consulting Thomas Prommer — Global Technology Executive
English 1:36

What is a Fractional CTO?

A Fractional CTO provides senior technology leadership on a part-time basis—typically 10-20 hours per week. You get executive-level guidance without the $400K+ annual cost of a full-time hire.

Unlike consultants who deliver recommendations and leave, I become part of your leadership team. I take ownership of outcomes, mentor your team, and stay accountable for results.

Ideal For:

  • Startups needing senior tech leadership before they can afford a full-time CTO
  • Scale-ups requiring strategic guidance during rapid growth
  • PE portfolio companies needing technology transformation
  • Established companies facing specific technology challenges

Services Included

Technology Strategy

Define technical vision, roadmaps, and architecture decisions aligned with business objectives.

Engineering Team Leadership

Build, mentor, and scale high-performing engineering teams. Establish processes that enable velocity.

Platform Architecture

Design scalable, maintainable systems. Evaluate build vs. buy decisions. Reduce technical debt.

Technical Due Diligence

Assess technology assets for M&A, investments, or partnerships. Identify risks and opportunities.

Vendor & Partner Management

Evaluate technology vendors, negotiate contracts, and manage strategic partnerships.

Board & Investor Relations

Translate technical complexity for stakeholders. Support fundraising with credible technical leadership.

Why Work With Me

I'm not a consultant who's never built anything. I've led engineering organizations at Fortune 500 scale.

  • Global SVP Engineering at Adidas — Led 500+ engineers across platform engineering, e-commerce, and omni-channel retail
  • CIO at Sweetgreen — Built technology organization from ground up, modernized systems, launched digital platform
  • President of Technology at Huge — Global technology strategy across 14 offices

I've scaled teams from 10 to 1,000+. I've navigated the challenges you're facing—and I can help you avoid the mistakes I've seen others make.

View Full Profile →

How It Works

1

Discovery Call

30-minute conversation to understand your challenges, goals, and whether we're a good fit.

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2

Proposal

Tailored engagement proposal with scope, deliverables, and investment based on your needs.

3

Onboarding

Quick integration with your team, systems, and processes. Most engagements start within 1-2 weeks.

4

Ongoing Partnership

Regular cadence of strategy sessions, team interactions, and measurable progress toward goals.

Frequently Asked Questions

What is a Fractional CTO?

A Fractional CTO is an experienced technology executive who provides strategic leadership on a part-time or project basis. Unlike a full-time CTO, a fractional engagement allows companies to access senior technology leadership at a fraction of the cost, typically 10-20 hours per week.

Who needs a Fractional CTO?

Fractional CTO services are ideal for: startups needing senior tech leadership before they can afford a full-time executive, scale-ups requiring strategic guidance during rapid growth, PE portfolio companies needing technology due diligence or transformation leadership, and established companies facing specific technology challenges or transitions.

How does a Fractional CTO engagement work?

Engagements typically start with a discovery call to understand your needs, followed by a tailored proposal. Most clients engage for 10-20 hours per week on a monthly retainer. I integrate with your leadership team, participate in key meetings, and provide hands-on guidance while building internal capabilities.

What's the difference between a Fractional CTO and a consultant?

A consultant typically provides recommendations and leaves. A Fractional CTO becomes part of your team, taking ownership of outcomes. I don't just advise—I help implement, mentor your team, and stay accountable for results. It's strategic leadership, not just advice.

How quickly can you start?

Most engagements begin within 1-2 weeks of signing. I maintain limited availability to ensure each client gets focused attention. For urgent needs, expedited onboarding is possible.

What industries do you specialize in?

I have deep experience in retail/e-commerce (Adidas, Nike), food service/restaurant tech (Sweetgreen), media/entertainment (EA, Hulu), and B2B platforms. However, the fundamentals of scaling engineering organizations and building technical strategy translate across industries.

Limited Availability

Ready to Discuss Your Technology Challenges?

Schedule a free 30-minute discovery call to explore how fractional CTO services can help your organization.