Callie Cullum Design

Visit Website Write a Review Claim this Company

Details

Founded:
2022
Hourly Rates:
Undisclosed
Employees:
2 - 9
Ratings:
4.4 10 Reviews

Industries Served

Aerospace & Defense Retail & E-commerce Legal Services Food & Beverage Telecommunications Travel & Hospitality Events & Event Management Construction Financial Services Education

Where We Specialize

15% Xamarin
Xamarin 15%
Metaverse Development 14%
E-commerce Development 13%
Blockchain Development 13%
Tokenization Platform 10%
Mobile App Development 8%
Implementation Services 7%
Web Development 5%
Bot Development 4%
AI Development 4%
IT Services 4%
Software Development 3%

Industry Expertise

Hospitality46% Logistics42% Travel12%

Typical Project Size

50% Midmarket Business
37% Enterprise
13% Small Business

About

Callie Cullum Design is a software development company that turns ideas into working products. The company's day-to-day work covers web platforms, mobile apps, and bespoke software. With 2 - 9 people on staff, Callie Cullum Design can take on projects of varying size. Overall, Callie Cullum Design is one of the options worth shortlisting for a technology project.

Callie Cullum Design Reviews

4.4 10 Reviews
Submit Review

They listened, asked the right questions, and delivered

Meera Nair / Founder & CEO | Oct 12, 2026

We were very happy with how this project went. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. They were upfront about what was realistic within our budget, which helped us prioritise the right features. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

We are already seeing better numbers than before the project. I would recommend Callie Cullum Design to anyone looking for a dependable Mobile App Development partner.

Project summary

We partnered with Callie Cullum Design to develop a field-staff app with offline mode that syncs back to our main system. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The engagement ran for about 6 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Feb 2026 - Aug 2026
Business Type:
Aerospace & Defense
Location:
Kolkata, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Swift Aerospace Pvt Ltd is a Aerospace & Defense business in Kolkata, India. As Founder & CEO, I was responsible for this project on our side and the main contact for Callie Cullum Design.
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to develop a field-staff app with offline mode that syncs back to our main system so they could focus on customers.
What services did the company provide for your project?
End-to-end Mobile App Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Aerospace & Defense and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Good. Weekly calls, regular updates and a shared board meant we always knew where things stood.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I would recommend them and we plan to work with them again.

Good results, communication improved as the project went on

Emma Tremblay / Chief Digital Officer | Aug 24, 2026

We got a good result in the end, but the road there had a few bumps. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. They shared working builds regularly, so we could test early and give feedback before things were locked in.

We launched on schedule and have not had any major issues since. There were some early misunderstandings on requirements that took a few rounds to sort out.

I would recommend Callie Cullum Design to anyone looking for a dependable Software Development partner.

Project summary

Our company worked with Callie Cullum Design to develop a scheduling and dispatch tool for our field team. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The project took roughly 2 months from kickoff to launch.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Apr 2026 - Jun 2026
Business Type:
Retail & E-commerce
Location:
Calgary, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Lakeshore Retail Inc is a Retail & E-commerce business in Calgary, Canada. As Chief Digital Officer, I was responsible for this project on our side and the main contact for Callie Cullum Design.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to develop a scheduling and dispatch tool for our field team before our busy season.
What services did the company provide for your project?
End-to-end Software Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Software Development partner.

Capable AI & Machine Learning team — happy with the end result

Thabo Naidoo / Program Manager | Aug 22, 2026

We got a good result in the end, but the road there had a few bumps. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

It has made a real difference to how our team works day to day. Estimates on a few features were optimistic and those took longer than planned.

We are already discussing the next phase with them.

Project summary

Our company worked with Callie Cullum Design to build a demand forecasting model on top of our sales data. The work covered requirements, design, development, testing and launch support. Overall it was a 3-month engagement.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$50,000 to $149,999
Project Duration:
Apr 2026 - Jul 2026
Business Type:
Legal Services
Location:
Cape Town, South Africa

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Program Manager at Oakline Partners, a Legal Services company based in Cape Town, South Africa. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
We needed to build a demand forecasting model on top of our sales data, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Mainly AI & Machine Learning. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I would recommend them and we plan to work with them again.

Solid Blockchain Development Work With Clear Communication Throughout

Bec Martin / IT Director | Jul 31, 2026

Our experience with Callie Cullum Design was really positive from start to finish. They were upfront about what was realistic within our budget, which helped us prioritise the right features. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

Feedback from our customers has been very positive so far. If you need a team that communicates well and delivers, they are a good choice.

Project summary

Our company worked with Callie Cullum Design to develop and audit smart contracts for a tokenized loyalty program. They worked alongside our in-house team, which mostly handled business requirements and testing. The project took roughly 7 months from kickoff to launch.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Blockchain Development
Project Cost:
$50,000 to $149,999
Project Duration:
Dec 2025 - Jul 2026
Business Type:
Food & Beverage
Location:
Adelaide, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as IT Director at Silverline Coffee Pty Ltd. We operate in Food & Beverage and most of our customers are in and around Adelaide, Australia.
What specific problem or business challenge led you to hire this company?
We needed to develop and audit smart contracts for a tokenized loyalty program, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Blockchain Development, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Food & Beverage clients before.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I would recommend them and we plan to work with them again.

Reliable Software Development Partner That Delivered What They Promised

Sean Walsh / Owner | Jun 18, 2026

Our experience with Callie Cullum Design was really positive from start to finish. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

Since launch, everything has been stable and our team has adapted to it quickly.

We would definitely work with them again.

Project summary

Our company worked with Callie Cullum Design to develop a scheduling and dispatch tool for our field team. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 4 months.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
Less than $10,000
Project Duration:
Jan 2026 - May 2026
Business Type:
Telecommunications
Location:
Cork, Ireland

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Horizon Networks Ltd is a Telecommunications business in Cork, Ireland. As Owner, I was responsible for this project on our side and the main contact for Callie Cullum Design.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to develop a scheduling and dispatch tool for our field team before our busy season.
What services did the company provide for your project?
Software Development, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Delivered on time and stayed involved after launch

Priya Johnson / Founder & CEO | May 28, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. Their project manager kept things organised and was quick to flag anything that might affect the timeline. They shared working builds regularly, so we could test early and give feedback before things were locked in. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

We are already seeing better numbers than before the project.

Overall, a team we trust and plan to keep working with.

Project summary

Callie Cullum Design was brought in to build a custom operations platform to replace the spreadsheets and email threads we were running the business on. They worked alongside our in-house team, which mostly handled business requirements and testing. We worked together for around 6 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$50,000 to $149,999
Project Duration:
Nov 2025 - May 2026
Business Type:
Travel & Hospitality
Location:
Chicago, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Travel & Hospitality company based in Chicago, USA. I'm the Founder & CEO and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
We needed to build a custom operations platform to replace the spreadsheets and email threads we were running the business on, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Software Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Callie Cullum Design asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Yes, on time and within budget.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Software Development partner.

Good work overall, with a few bumps along the way

Yousef Khan / Founder | May 02, 2026

The final product works well for us, although the process could have been smoother. When we changed our minds on a couple of features halfway through, they handled it without fuss and were clear about the impact on cost and timeline. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

We are already seeing better numbers than before the project. A couple of milestones slipped by a week or so, mostly around testing. We are already discussing the next phase with them.

Project summary

We hired Callie Cullum Design to add an AI chatbot to our support site that answers questions from our help docs. The work covered requirements, design, development, testing and launch support. The project took roughly 4 months from kickoff to launch.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Nov 2025 - Mar 2026
Business Type:
Events & Event Management
Location:
Abu Dhabi, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Founder at Ironwood Productions LLC. We operate in Events & Event Management and most of our customers are in and around Abu Dhabi, UAE.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to add an AI chatbot to our support site that answers questions from our help docs before our busy season.
What services did the company provide for your project?
End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
We compared three or four agencies. Callie Cullum Design asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Events & Event Management clients before.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
It is still early, but the numbers are trending in the right direction and the system has been stable.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Reliable AI & Machine Learning Partner That Delivered What They Promised

Joanne Goh / Head of Digital Transformation | Mar 19, 2026

I would rate this engagement highly on almost every front. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

Since launch, everything has been stable and our team has adapted to it quickly. Overall, a team we trust and plan to keep working with.

Project summary

We partnered with Callie Cullum Design to build a demand forecasting model on top of our sales data. They worked alongside our in-house team, which mostly handled business requirements and testing. We worked together for around 9 months.

  • Overall Rating 4.5
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$150,000 to $499,999
Project Duration:
May 2025 - Feb 2026
Business Type:
Construction
Location:
Singapore

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Nimbus Projects Pte Ltd is a Construction business in Singapore. As Head of Digital Transformation, I was responsible for this project on our side and the main contact for Callie Cullum Design.
What specific problem or business challenge led you to hire this company?
We needed to build a demand forecasting model on top of our sales data, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Construction and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.
What tangible results or business impact have you seen since the project was completed?
It is still early, but the numbers are trending in the right direction and the system has been stable.
What did you like most about working with this company?
How easy they were to work with. They were responsive, honest and genuinely interested in our success.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

A reliable long-term partner for our tech needs

Darragh Byrne / Director | Mar 15, 2026

Our experience with Callie Cullum Design was really positive from start to finish. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

Since launch, everything has been stable and our team has adapted to it quickly. We would definitely work with them again.

Project summary

We hired Callie Cullum Design to help us choose and plan the rollout of a new core system. The work covered requirements, design, development, testing and launch support. The engagement ran for about 7 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
IT Consulting
Project Cost:
$10,000 to $49,999
Project Duration:
Jul 2025 - Feb 2026
Business Type:
Financial Services
Location:
Cork, Ireland

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Director at Blue Harbor Payments Ltd. We operate in Financial Services and most of our customers are in and around Cork, Ireland.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to help us choose and plan the rollout of a new core system before our busy season.
What services did the company provide for your project?
IT Consulting, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable IT Consulting partner.

Exceeded our expectations on quality and communication

Jason Johnson / Chief Digital Officer | Mar 04, 2026

Our experience with Callie Cullum Design was really positive from start to finish. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. When we changed our minds on a couple of features halfway through, they handled it without fuss and were clear about the impact on cost and timeline.

Since launch, everything has been stable and our team has adapted to it quickly. We would definitely work with them again.

Project summary

We engaged Callie Cullum Design to rebuild a slow, outdated web app and move it to a new framework. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The project took roughly 5 months from kickoff to launch.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$50,000 to $149,999
Project Duration:
Aug 2025 - Jan 2026
Business Type:
Education
Location:
Raleigh, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Chief Digital Officer at Riverbend EdTech Inc, a Education company based in Raleigh, USA. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to rebuild a slow, outdated web app and move it to a new framework before our busy season.
What services did the company provide for your project?
End-to-end Web Development — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Education and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Web Development partner.
Get Listed