Matthias Isler · Fractional CTOLet’s talk
Matthias Isler · Fractional CTO
Let’s talk about your business.

No CTO? I take the technical lead.

I join as your fractional CTO, own technical decisions and delivery, and when you need a full-time successor, I lead recruitment and handover.

Let’s talk about your business.

I’m Matthias Isler, fractional CTO and serial entrepreneur. I bring founder judgement, engineering depth and 12 years in CTO roles.

Good developers still need technical leadership

The team may be capable. The gap appears when someone needs to challenge an investment, resolve competing priorities or own a risk—and the decision lands with the founder.

This can mean a business without a technical co-founder, a CTO departure, planned succession or a team whose next stage requires executive leadership.

Ownership02

Give the decisions an owner

Founder

Commercial objectives and business commitments

Matthias

Technical direction, decisions and delivery leadership

Team and partners

Implementation and operating work

Together

Priorities, investment and agreed decision authority

Clear responsibility. Work continues between reviews.

We agree which decisions I own and where we decide together. I lead direction, people, delivery, budget and suppliers. Your engineers or development partners carry implementation forward, with technical review and a clear route for blocked decisions.

Responsibilities. Working rhythm.

Proof03

Leadership carried through to delivery

At a SaaS startup, the CEO was managing engineering while defects and rework accumulated. I took responsibility, rebuilt the team around exceptional senior engineers and led changes across product, engineering, QA and DevOps. Monthly engineering staff costs fell by 42%.

Read the leadership and turnaround case.

Client work · Technical leadership appointment

After another company's failed CTO hire, I assessed candidates against its actual commercial, architecture and leadership challenges.

Read the CTO appointment case. See my career.

The venture’s actual constraints

Commercial priorities, architecture and leadership reasoning

Practical assessment and structured human feedback

Appointed CTO now successfully leads the technical side

Assess the judgement the role will require.

Arrangement04

Fractional, interim or permanent?

Fractional leadership serves a recurring need. Interim responsibility bridges a gap or transition. If you need a permanent CTO, I’ll tell you—and can lead the search and handover.

A capable internal leader with clearer authority may also be the right answer.

Compare arrangements. Choosing a fractional CTO.

Fees05

Scope and fees

CTO mandates start at

CHF 3'500per month

We agree the scope individually. Focused assignments are quoted separately.

Engagement economics.

Next step06

Tell me which decisions need an owner

Tell me who leads technology now, which decisions need an owner and when they must be made.

The first conversation is free and takes 30 minutes. You leave with my view on whether I can help and how.