Hi, I'm a Fractional CTO in Sydney, Australia.

Hi, I'm a Fractional CTO in Sydney, Australia.

Hi, I'm a Fractional CTO in Sydney, Australia.

I'm Sam Halcrow. I lead the technology function inside your business, taking full accountability for where your technology goes and how it gets there.

I'm Sam Halcrow. I lead the technology function inside your business, taking full accountability for where your technology goes and how it gets there.

I'm Sam Halcrow. I lead the technology function inside your business, taking full accountability for where your technology goes and how it gets there.

16+ yrs

Leading technology initiatives

253

Companies I’ve stepped into

1M+

Engineering hours under my leadership

Send me a message

Send me a message

Screened personally. You'll only get one reply from me, not a newsletter.

Screened personally. You'll only get one reply from me, not a newsletter.

Why you would need a fractional CTO

The right Fractional CTO changes everything about how your technology performs.

The right Fractional CTO changes everything about how your technology performs.

A fractional CTO is a technical leader who works inside your business on a part-time or ongoing basis, taking full accountability for your technology without the cost of a full-time hire.


Most businesses hire a fractional CTO because they need technical leadership now but aren't ready to commit to a permanent CTO salary, or because the role has been vacant and the gap is starting to cost them.


I've filled that role for 253 companies across infrastructure, SaaS, enterprise transformation, and early-stage startups. I lead every engagement personally and bring a 26-strong engineering team across software, AI, cloud, and security when the work needs one.

CLIENTS I'VE WORKED WITH

253 companies have trusted me with their technology

253 companies have trusted me with their technology

253 companies have trusted me with their technology

WHAT I DO

WHAT I DO

These are the gaps I fill as a Fractional CTO

These are the gaps I fill as a Fractional CTO

Someone accountable for your tech

I own the technical direction of your organisation and take accountability for it.

The right expertise for your business

I’ve been inside 253 tech projects. I know what’s about to go wrong before it does.

A leader your team and vendors can work with

I run your engineering function. I manage your existing tech team and partners.

Someone who speaks both languages

I speak business terms with your leadership and technical terms with your engineers.

VIDEO TESTIMONIALS

VIDEO TESTIMONIALS

VIDEO TESTIMONIALS

Hear from the companies I’m currently Fractional CTO at

Hear from the companies I’m currently Fractional CTO at

Hear from the companies I’m currently Fractional CTO at

Angela Bevitt-Parr

National Marketing Manager
AWS Australia

Angela Bevitt-Parr

National Marketing Manager
AWS Australia

Angela Bevitt-Parr

National Marketing Manager
AWS Australia

Tim Buric

Chief Technology Officer
Agilyx & MUNIvers

Tim Buric

Chief Technology Officer
Agilyx & MUNIvers

Tim Buric

Chief Technology Officer
Agilyx & MUNIvers

Kelvin Kenney

Chief Executive Officer
Bow Wow Meow

Kelvin Kenney

Chief Executive Officer
Bow Wow Meow

Kelvin Kenney

Chief Executive Officer
Bow Wow Meow

"Sam and his team injected innovation back into our environment to reconstruct what we had and gear it up for the future."

"Sam and his team injected innovation back into our environment to reconstruct what we had and gear it up for the future."

"Sam and his team injected innovation back into our environment to reconstruct what we had and gear it up for the future."

Angela Bevitt-Parr

National Marketing Manager, AWS Australia

Angela Bevitt-Parr

National Marketing Manager, AWS Australia

Angela Bevitt-Parr

National Marketing Manager, AWS Australia

"Sam and his team took the time to understand our business and knew all the tech we needed… They act as an extension of our team."

"Sam and his team took the time to understand our business and knew all the tech we needed… They act as an extension of our team."

"Sam and his team took the time to understand our business and knew all the tech we needed… They act as an extension of our team."

Rouad El-Ayoubi

Managing Director, Alliance Project Group

Rouad El-Ayoubi

Managing Director,

Alliance Project Group

Rouad El-Ayoubi

Managing Director, Alliance Project Group

"What I liked about [working with Halcrow] was that there was a lot of experience brought in. It was the breadth of experience that gave me some certainty that we were on the right path."

"What I liked about [working with Halcrow] was that there was a lot of experience brought in. It was the breadth of experience that gave me some certainty that we were on the right path."

"What I liked about [working with Halcrow] was that there was a lot of experience brought in. It was the breadth of experience that gave me some certainty that we were on the right path."

Tim Buric

Chief Technology Officer, Agilyx & MUNIvers

Tim Buric

Chief Technology Officer, Agilyx & MUNIvers

Tim Buric

Chief Technology Officer, Agilyx & MUNIvers

Results

Outcomes I’ve achieved for companies like yours

Outcomes I’ve achieved for companies like yours

Outcomes I’ve achieved for companies like yours

45%

Sprint variance at 45%. Salesforce migration stalling. First on-time delivery in 18 months.

Man in a blue t-shirt smiling confidently while standing against a light wall in sunlight

70%

Field crew productivity — Acciona Westconnex 7 years inside a 7km tunnel. Zero surprises.

Woman with blonde hair and glasses wearing a white blouse, softly lit against a brown wall

35%

Bow Wow Meow +35% CTR increase — first A/B test, Bow Wow Meow From 6–8 weeks per test to 5 days

Smiling man in a grey blazer and graphic tee, lit by window shadows on a beige wall

5 mths

Bovara Time to market — Bovara EV charging platform vs. 12–18 months typical for a custom build. 30 stations live at launch.

Man and woman standing side by side in sunlight, both wearing light collared shirts

45%

Sprint variance at 45%. Salesforce migration stalling. First on-time delivery in 18 months.

Man in a blue t-shirt smiling confidently while standing against a light wall in sunlight

70%

Field crew productivity — Acciona Westconnex 7 years inside a 7km tunnel. Zero surprises.

Woman with blonde hair and glasses wearing a white blouse, softly lit against a brown wall

35%

Bow Wow Meow +35% CTR increase — first A/B test, Bow Wow Meow From 6–8 weeks per test to 5 days

Smiling man in a grey blazer and graphic tee, lit by window shadows on a beige wall

5 mths

Bovara Time to market — Bovara EV charging platform vs. 12–18 months typical for a custom build. 30 stations live at launch.

Man and woman standing side by side in sunlight, both wearing light collared shirts

45%

Sprint variance at 45%. Salesforce migration stalling. First on-time delivery in 18 months.

Man in a blue t-shirt smiling confidently while standing against a light wall in sunlight

70%

Field crew productivity — Acciona Westconnex 7 years inside a 7km tunnel. Zero surprises.

Woman with blonde hair and glasses wearing a white blouse, softly lit against a brown wall

35%

Bow Wow Meow +35% CTR increase — first A/B test, Bow Wow Meow From 6–8 weeks per test to 5 days

Smiling man in a grey blazer and graphic tee, lit by window shadows on a beige wall

5 mths

Bovara Time to market — Bovara EV charging platform vs. 12–18 months typical for a custom build. 30 stations live at launch.

Man and woman standing side by side in sunlight, both wearing light collared shirts

HOW TO START working with me

HOW TO START working with me

Getting a Fractional CTO started takes three steps

Getting a Fractional CTO started takes three steps

STEP 1

Book an introduction call

Send me a message or book a call below. We'll set up a video during your working day.

Send me a message or book a call below. We'll set up a video during your working day.

STEP 2

Get a plan tailored to your business

After we discuss your tech project, I'll write up what I'd focus on first and how we might work together.

After we discuss your tech project, I'll write up what I'd focus on first and how we might work together.

STEP 3

Get started

If it makes sense, I start inside your business as a Fractional CTO and meet your team.

If it makes sense, I start inside your business as a Fractional CTO and meet your team.

FAQ

Frequently asked questions

Frequently asked questions

Frequently asked questions

What are the signs my business needs a fractional CTO?

Common triggers: technical decisions are having consequences nobody in the room can properly evaluate, an engineering team lacks senior direction, a fundraise or technical due diligence is coming up, or the business has outgrown ad hoc technical decision-making but isn't ready for a full-time executive.

How is this different from hiring a full-time CTO?

A full-time CTO is one person dedicated entirely to your business, usually at $250k-$450k a year once everything is factored in. A fractional CTO gives you the same level of decision-making and accountability, but for a set number of days a month, at a fraction of the cost.

Is a fractional CTO different from an interim CTO?

Yes. An interim CTO is a temporary, usually full-time placement, brought in while a business searches for a permanent hire. A fractional CTO is an ongoing part-time arrangement that can run for years, not a stopgap.

What kinds of organisations do you typically work with?

Any organisation that is making significant technology decisions and needs someone senior enough to make them well. Some have engineering teams already, some don't. Some are mid-project, some are just starting. The common thread is they need a technical leader who's accountable for the outcome.

What happens if we already have an in-house engineering team or a vendor?

I work closely with them, setting direction and checking that decisions and delivery are sound. If you don't have an engineering team in place, I can bring my own team of engineers to fill that gap rather than leaving you to hire and manage one separately.

© 2026 Halcrow | Privacy Policy

Let's talk about your technology gaps

Whether you’ve got a clear problem or are concerned about what you don't know, I’m always happy to have a conversation with business leaders and share my thoughts and insights.

Send me a message

Screened personally. You'll only get one reply from me, not a newsletter.

© 2026 Halcrow | Privacy Policy

Let's talk about your technology gaps

Whether you’ve got a clear problem or are concerned about what you don't know, I’m always happy to have a conversation with business leaders and share my thoughts and insights.

Send me a message

© 2026 Halcrow | Privacy Policy

Let's talk about your technology gaps

Whether you’ve got a clear problem or are concerned about what you don't know, I’m always happy to have a conversation with business leaders and share my thoughts and insights.

Send me a message

Screened personally. You'll only get one reply from me, not a newsletter.