Web App Development Company Sydney

Web App Development Company Sydney

We build web applications and customer portals for Australian businesses, and look after them once they're live.

We build web applications and customer portals for Australian businesses, and look after them once they're live.

We build web applications and customer portals for Australian businesses, and look after them once they're live.

Hi, I’m Sam Halcrow. I lead every custom web app development project personally as a Fractional CTO.

Hi, I’m Sam Halcrow. I lead every custom web app development project personally as a Fractional CTO.

Hi, I’m Sam Halcrow. I lead every custom web app development project personally as a Fractional CTO.

Book an introduction call with Sam

Book an introduction call with Sam

A short chat through whatever's on your mind: a tech project you're thinking about, something already underway, or a question about how to approach a problem.

16+ yrs

Building software and apps

253

Companies we've worked with

1M+

Hours of engineering and development delivered

4.9/5

Average client rating on Google and Clutch

16+ yrs

Building software and apps

253

Companies we've worked with

1M+

Hours of engineering and development delivered

4.9/5

Average client rating on Google and Clutch

16+ yrs

Building software and apps

253

Companies we've worked with

1M+

Hours of engineering and development delivered

4.9/5

Average client rating on Google and Clutch

CLIENTS

253 companies have trusted my web development team

253 companies have trusted my web development team

What we offer

What we offer

Web development services we deliver from Sydney

Web development services we deliver from Sydney

Web development services we deliver from Sydney

Customer portals

Customer portals

Secure portals where your customers log in to make bookings or manage their account.

Secure portals where your customers log in to make bookings or manage their account.

Internal business systems

Internal business systems

Web-based tools your team uses every day, like job management systems and dashboards, for businesses that have outgrown spreadsheets.

Web-based tools your team uses every day, like job management systems and dashboards, for businesses that have outgrown spreadsheets.

SaaS platforms & products

SaaS platforms & products

For businesses building a web platform to sell on subscription. We build the first version and keep improving it as your customer base grows.

For businesses building a web platform to sell on subscription. We build the first version and keep improving it as your customer base grows.

Online platforms & marketplaces

Online platforms & marketplaces

Platforms that connect buyers with sellers, or let customers book and pay for services online.

Platforms that connect buyers with sellers, or let customers book and pay for services online.

Progressive web apps

Progressive web apps

Web apps that work like a mobile app on any phone, without going through the app stores. A cheaper option when you need mobile access but not a full app.

Web apps that work like a mobile app on any phone, without going through the app stores. A cheaper option when you need mobile access but not a full app.

Rebuilds & modernisation

Rebuilds & modernisation

For web apps built on outdated technology, or ones a previous developer left unfinished. We work out what's worth keeping and get the app running properly again.

For web apps built on outdated technology, or ones a previous developer left unfinished. We work out what's worth keeping and get the app running properly again.

Why Halcrow

Why Halcrow

Why our clients trust us with the software their business runs on

Why our clients trust us with the software their business runs on

Plenty of companies can write good code. Software projects usually go wrong in the planning and in the decisions made along the way, so that's where we've focused how we work.

Plenty of companies can write good code. Software projects usually go wrong in the planning and in the decisions made along the way, so that's where we've focused how we work.

Plenty of companies can write good code. Software projects usually go wrong in the planning and in the decisions made along the way, so that's where we've focused how we work.

Direct access to me and my developers

You'll deal directly with me and with the developers working on your project. There's no account manager passing messages back and forth.

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

We agree on the goal before we start

Before my developers begin, we agree on what the software needs to improve for your business. We measure the project against that goal, and we don't consider the job done until it's improved.

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

A CTO's judgement on every project

I've spent 16 years making tech calls. I'll tell you which risks are worth worrying about and if there's a simpler way to get what you need. Every suggestion I make comes back to what your business is trying to achieve.

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

Technology chosen to suit your business

I recommend the approach that makes sense for your goals and budget. Sometimes that's a simpler build than you expected, or an existing product with a few changes. If it is, I'll tell you.

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

Direct access to me and my developers

You'll deal directly with me and with the developers working on your project. There's no account manager passing messages back and forth.

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

We agree on the goal before we start

Before my developers begin, we agree on what the software needs to improve for your business. We measure the project against that goal, and we don't consider the job done until it's improved.

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

A CTO's judgement on every project

I've spent 16 years making tech calls. I'll tell you which risks are worth worrying about and if there's a simpler way to get what you need. Every suggestion I make comes back to what your business is trying to achieve.

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

Technology chosen to suit your business

I recommend the approach that makes sense for your goals and budget. Sometimes that's a simpler build than you expected, or an existing product with a few changes. If it is, I'll tell you.

Man and woman standing side by side in sunlight, both wearing light collared shirts
Direct access to me and my developers

You'll deal directly with me and with the developers working on your project. There's no account manager passing messages back and forth.

Man in a blue t-shirt smiling confidently while standing against a light wall in sunlight
We agree on the goal before we start

Before my developers begin, we agree on what the software needs to improve for your business. We measure the project against that goal, and we don't consider the job done until it's improved.

Woman with blonde hair and glasses wearing a white blouse, softly lit against a brown wall
A CTO's judgement on every project

I've spent 16 years making tech calls. I'll tell you which risks are worth worrying about and if there's a simpler way to get what you need. Every suggestion I make comes back to what your business is trying to achieve.

Smiling man in a grey blazer and graphic tee, lit by window shadows on a beige wall
Technology chosen to suit your business

I recommend the approach that makes sense for your goals and budget. Sometimes that's a simpler build than you expected, or an existing product with a few changes. If it is, I'll tell you.

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

TESTIMONIALS

Hear from the companies we’ve delivered web development to

Hear from the companies we’ve delivered web development to

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 operate as a trusted partner at every stage of delivery. They’re pivotal in bringing engineering maturity to coordinate and execute large, complex projects.”

"Sam and his team operate as a trusted partner at every stage of delivery. They're pivotal in bringing engineering maturity to coordinate and execute large, complex projects."

Arun Prasad, Founder AIWhispr

“Sam took the time to understand our business and knew all the tech we needed. It was a pleasure to work with him and his team as they acted as an extension of our team.”

“Sam took the time to understand our business and knew all the tech we needed. It was a pleasure to work with him and his team as they acted as an extension of our team.”

Luke Schwigtenberg, Head of R&D Banktech

“From the concept design meeting, Sam exceeded our expectations. He understood what our needs were, and his engineers worked quickly from brief to going live.”

"From the concept design meeting, Sam exceeded our expectations. He understood what our needs were, and his engineers worked quickly from brief to going live."

Rouad El-Ayoubi, CEO Alliance Project Group

”Sam and his team’s expertise, Ways of Working framework, and mastery of their craft truly set them apart. This is the beauty of partnering with them. We extend our technical capabilities seamlessly without the overhead of hiring in-house.”

”Sam and his team's expertise, Ways of Working framework, and mastery of their craft truly set them apart. This is the beauty of partnering with them. We extend our technical capabilities seamlessly without the overhead of hiring in-house.”

Angela Bevitt-Parr, CMO AWS Australia

“With a deep understanding of our business needs, Sam leads an efficient process in delivering quality outputs.”

Kelvin Kenney, CEO Bow Wow Meow

“Working with Sam has been a turning point for our business. In addition to bringing structure to the development work, we also benefitted from his insight into emerging trends and technologies, as well as efficient and effective solutions.”

"Working with Sam has been a turning point for our business. In addition to bringing structure to the development work, we also benefitted from his insight into emerging trends and technologies, as well as efficient and effective solutions."

Adrian Black, Founder Ticked Off

“In a short period of time, Sam demonstrated an exceptional ability to align the right technical expertise with our specific needs.”

“In a short period of time, Sam demonstrated an exceptional ability to align the right technical expertise with our specific needs.”

Tim Buric, CTO Agilyx

“Sam guided us through the design and development process in a way we wouldn’t be able to do on our own. We’re very happy to partner with him.”

“Sam guided us through the design and development process in a way we wouldn't be able to do on our own. We’re very happy to partner with him.”

Thomas Roper, Engineer Lendlease

“I’ve worked with Sam and his team for over 4 years over multiple projects. Phenomenal.”

"I've worked with Sam and his team for over 4 years over multiple projects. Phenomenal.”

Andrew Raso, Group-CEO Online Marketing Gurus

Sam and his team are great. They built really cool tools for us, and we look forward to doing more together as partners.”

"Sam and his team are great. They built really cool tools for us, and we look forward to doing more together as partners.”

Matthew Freebury, Director FMCG Analytics

“We spotted a market gap, and Sam helped us seize it quickly. His team built a product that gave us real advantage.”

“We spotted a market gap, and Sam helped us seize it quickly. His team built a product that gave us real advantage.”

Michael Soukie, Founder Scafflinq

“Sam introduced remarkable insights, and his passion for world-class quality delivered wonderful results for the business.”

"Sam introduced remarkable insights, and his passion for world-class quality delivered wonderful results for the business.”

George Betsis, Founder Stickytape

“Sam has a keen understanding of our company and our clients’ needs. His technical knowledge enables him to deploy solutions that continue to further our growth.”

“Sam has a keen understanding of our company and our clients’ needs. His technical knowledge enables him to deploy solutions that continue to further our growth.”

Michael Kalucy, Managing Director Workhouse

“Sam is everything we want in a fractional CTO. He understands our needs, works as if he owns the product, and comes up with innovative solutions quickly.”

“Sam is everything we want in a fractional CTO. He understands our needs, works as if he owns the product, and comes up with innovative solutions quickly.”

Malaz Majanni, CEO OnePath Network

“Sam’s competency, attention to detail, and technical skills were impressive. What he built with us has been adding value to our business for over 5 years.”

“Sam's competency, attention to detail, and technical skills were impressive. What he built with us has been adding value to our business for over 5 years.”

Anastasia Lobanova, SAP Analyst Agrana Fruit

“Sam took a concept and together with his team, turned it into a product we’re genuinely proud of. Their passion makes them a joy to work with.”

“Sam took a concept and together with his team, turned it into a product we’re genuinely proud of. Their passion makes them a joy to work with.”

Trent Carney, Founder MyCanary

WHAT WE DO, IN PLAIN TERMS

Web Development Company in Sydney

I'm Sam Halcrow. I'm a Sydney-based Fractional CTO running a web development company with clients across Australia. My team and I have delivered over one million hours of engineering to 253 companies in 16 years.

Web Development Services

Custom Web Application Development

Web App Development for Products and SaaS

Ongoing Web Application Development

Timelines and Tech Stack

Why Choose Our Web Development Agency

HOW TO START working with me

HOW TO START working with me

Our web development process

Our web development process

Three steps to work with me. The first one costs you nothing but gives you what you need at this moment.

Three steps to work with me. The first one costs you nothing but gives you what you need at this moment.

STEP 1

Book an introduction call with me

You describe what you’re trying to build or fix. I ask the questions a CTO would.

STEP 2

I send a scope you can hold us to

Clear phases, honest estimates and the risks we can see, written so your leadership team can follow it. You'll know what to do next, whether or not we end up working together.

STEP 3

The team embeds and we start with you

You decide to work with us. I lead my engineers in building your software.

FAQ

What I'm asked on most web development scoping calls

How do you price?

Who owns the code and IP?

Can you take over an existing build or vendor situation?

How quickly can you start?

Where are you based?

FAQ

What I'm asked on most web development scoping calls

How do you price?

Who owns the code and IP?

Can you take over an existing build or vendor situation?

How quickly can you start?

Where are you based?

FAQ

What I'm asked on most web development scoping calls

How do you price?

Who owns the code and IP?

Can you take over an existing build or vendor situation?

How quickly can you start?

Where are you based?

READY?

After our first meeting you'll
leave knowing what to do next

Visit my office in Surry Hills

Exterior of a building with orange awnings and a sign above the door that reads “Prospect.”

Halcrow Office

Level 3, 116 Devonshire Street, Surry Hills NSW 2010

Meet on a video call

Book an introduction call with Sam

A short chat through whatever's on your mind: a tech project you're thinking about, something already underway, or a question about how to approach a problem.

CONTACT ME

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.

Visit me

Level 3
116 Devonshire Street
Surry Hills
NSW Australia

Feel free to call me directly

© 2026 Halcrow | Privacy Policy

READY?

After our first meeting you'll
leave knowing what to do next

Visit my office in Surry Hills

Exterior of a building with orange awnings and a sign above the door that reads “Prospect.”

Halcrow Office

Level 3, 116 Devonshire Street, Surry Hills NSW 2010

Meet on a video call

Book an introduction call with Sam

A short chat through whatever's on your mind: a tech project you're thinking about, something already underway, or a question about how to approach a problem.

CONTACT ME

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.

Visit me

Level 3
116 Devonshire Street
Surry Hills
NSW Australia

Feel free to call me directly

© 2026 Halcrow | Privacy Policy

READY?

After our first meeting you'll
leave knowing what to do next

Visit my office in Surry Hills

Exterior of a building with orange awnings and a sign above the door that reads “Prospect.”

Halcrow Office

Level 3, 116 Devonshire Street, Surry Hills NSW 2010

Meet on a video call

Book an introduction call with Sam

A short chat through whatever's on your mind: a tech project you're thinking about, something already underway, or a question about how to approach a problem.

CONTACT ME

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.

Visit me

Level 3
116 Devonshire Street
Surry Hills
NSW Australia

Feel free to call me directly

© 2026 Halcrow | Privacy Policy