JSON Crew

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Details

Founded:
2025
Hourly Rates:
$50 - $99 / hr
Employees:
2 - 9
Ratings:
4.8 9 Reviews

Industries Served

Healthcare Insurance Real Estate Energy & Utilities Nonprofit & NGO Government & Public Sector Environmental Services Fashion & Apparel

Where We Specialize

13% Salesforce Development
Salesforce Development 13%
Web3 12%
Cloud Computing Services 11%
Progressive Web App 10%
Metaverse Development 10%
Web Design 9%
Android 9%
Bot Development 8%
Mobile App Development 7%
Blockchain Development 5%
AI Development 5%
Web Development 1%

Industry Expertise

Food90% Restaurant10%

Typical Project Size

42% Enterprise
36% Midmarket Business
22% Small Business

About

JSON Crew is a software development company that turns ideas into working products. Their work spans web development, mobile apps, and custom software projects. JSON Crew employs 2 - 9 people. Projects are generally billed around $50 - $99 / hr/hr. JSON Crew holds a 4.5-star rating across 1 client reviews. Their home base is Kraków, Poland. These details offer a useful starting point when evaluating JSON Crew.

JSON Crew Reviews

4.8 9 Reviews
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Honest advice and solid execution

Yousef Haddad / Marketing Director | Sep 14, 2026

We were very happy with how this project went. Their project manager kept things organised and was quick to flag anything that might affect the timeline. 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 result looks great and performs well, and our internal team found it easy to take over. If you need a team that communicates well and delivers, they are a good choice.

Project summary

We partnered with JSON Crew to move our application to Azure and set up proper backups and monitoring. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 3-month engagement.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Cloud Services
Project Cost:
$50,000 to $149,999
Project Duration:
Apr 2026 - Jul 2026
Business Type:
Healthcare
Location:
Dubai, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Marketing Director at Clearfield Wellness, a Healthcare company based in Dubai, UAE. 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 move our application to Azure and set up proper backups and monitoring, 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 Cloud Services — 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 Healthcare 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?
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?
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?
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, I would recommend them and we plan to work with them again.

Solid AI & Machine Learning Work With Clear Communication Throughout

Rachel Graham / Co-Founder & CTO | Aug 17, 2026

JSON Crew did an excellent job for us. They shared working builds regularly, so we could test early and give feedback before things were locked in. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

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

JSON Crew was brought in to automate document data extraction that our team was doing by hand. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 8-month engagement.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Nov 2025 - Jul 2026
Business Type:
Insurance
Location:
Austin, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Co-Founder & CTO at Evergreen Cover. We operate in Insurance and most of our customers are in and around Austin, USA.
What specific problem or business challenge led you to hire this company?
We had tried to do this internally and it stalled. We needed specialists to automate document data extraction that our team was doing by hand.
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?
We compared three or four agencies. JSON Crew asked the best questions and had good reviews from past clients.
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?
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, I would recommend them and we plan to work with them again.

Skilled UI/UX Design Team That Understood Our Business

Callum Barker / Founder | Aug 16, 2026

I would rate this engagement highly on almost every front. We dealt with the same core team throughout, so we did not have to keep re-explaining things. They shared working builds regularly, so we could test early and give feedback before things were locked in. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

It has made a real difference to how our team works day to day.

I would recommend JSON Crew to anyone looking for a dependable UI/UX Design partner.

Project summary

Our company worked with JSON Crew to redesign the user experience of our SaaS product. The work covered requirements, design, development, testing and launch support. We worked together for around 7 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
UI/UX Design
Project Cost:
$10,000 to $49,999
Project Duration:
Dec 2025 - Jul 2026
Business Type:
Real Estate
Location:
Cambridge, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Founder at Northgate Realty Ltd. We operate in Real Estate and most of our customers are in and around Cambridge, UK.
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 redesign the user experience of our SaaS product so they could focus on customers.
What services did the company provide for your project?
UI/UX Design, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
They had relevant experience in Real Estate and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Real Estate 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?
Customer feedback has been positive, and we have seen better engagement since going live.
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?
Definitely. We have already started talking about the next phase.

Good value and a team that genuinely cares about the result

Ahmed Saleh / IT Manager | Jul 23, 2026

Our experience with JSON Crew was really positive from start to finish. We dealt with the same core team throughout, so we did not have to keep re-explaining things. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. 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.

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 JSON Crew to rebuild our existing mobile app, which had poor reviews and frequent crashes. They also took care of integrations with a couple of third-party tools we already used. Overall it was a 4-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Jan 2026 - May 2026
Business Type:
Energy & Utilities
Location:
Dubai, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as IT Manager at Horizon Solar. We operate in Energy & Utilities and most of our customers are in and around Dubai, UAE.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to rebuild our existing mobile app, which had poor reviews and frequent crashes before our busy season.
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?
We compared three or four agencies. JSON Crew 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 Energy & Utilities clients before.
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?
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?
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?
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 Mobile App Development partner.

Dependable AI & Machine Learning Partner for a Growing Nonprofit & NGO Business

Carlos Sullivan / Managing Director | Jun 13, 2026

We were very happy with how this project went. 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. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

Since launch, everything has been stable and our team has adapted to it quickly. I would recommend JSON Crew to anyone looking for a dependable AI & Machine Learning partner.

Project summary

We engaged JSON Crew to add an AI chatbot to our support site that answers questions from our help docs. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 8-month engagement.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Aug 2025 - Apr 2026
Business Type:
Nonprofit & NGO
Location:
Charlotte, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Silverline Foundation LLC is a Nonprofit & NGO business in Charlotte, USA. As Managing Director, I was responsible for this project on our side and the main contact for JSON Crew.
What specific problem or business challenge led you to hire this company?
We needed to add an AI chatbot to our support site that answers questions from our help docs, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
AI & Machine Learning, including planning, development, testing and launch support.
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?
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?
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?
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 would recommend them and we plan to work with them again.

Exceeded our expectations on quality and communication

Megan Bennett / Director | May 05, 2026

Our experience with JSON Crew was really positive from start to finish. They shared working builds regularly, so we could test early and give feedback before things were locked in. 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. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

Feedback from our customers has been very positive so far. We are already discussing the next phase with them.

Project summary

We partnered with JSON Crew to migrate our sales team to a new CRM and set up automation. Their team handled planning, development and QA, with our product owner signing off each milestone. We worked together for around 9 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
CRM Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jun 2025 - Mar 2026
Business Type:
Government & Public Sector
Location:
San Diego, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Sage Public Services is a Government & Public Sector business in San Diego, USA. As Director, I was responsible for this project on our side and the main contact for JSON Crew.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to migrate our sales team to a new CRM and set up automation before our busy season.
What services did the company provide for your project?
CRM 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. JSON Crew 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 Government & Public Sector clients before.
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?
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?
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.

JSON Crew Delivered a Quality AI & Machine Learning Solution on Time

Kavya Menon / Co-Founder & CTO | Feb 05, 2026

JSON Crew did an excellent job for us. 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. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

The result looks great and performs well, and our internal team found it easy to take over. We are already discussing the next phase with them.

Project summary

We hired JSON Crew to add an AI chatbot to our support site that answers questions from our help docs. Their team handled planning, development and QA, with our product owner signing off each milestone. We worked together for around 9 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Mar 2025 - Dec 2025
Business Type:
Healthcare
Location:
Mumbai, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Brightpath Care Pvt Ltd is a Healthcare business in Mumbai, India. As Co-Founder & CTO, I was responsible for this project on our side and the main contact for JSON Crew.
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?
AI & Machine Learning, plus QA and some consulting on how to structure the project.
Why did you choose this company over other providers you considered?
We compared three or four agencies. JSON Crew 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 Healthcare 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?
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?
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.

Reliable Blockchain Development Partner That Delivered What They Promised

Kelly Foster / Founder & CEO | Jan 22, 2026

We were very happy with how this project went. They shared working builds regularly, so we could test early and give feedback before things were locked in. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

We launched on schedule and have not had any major issues since. We are already discussing the next phase with them.

Project summary

We hired JSON Crew to develop and audit smart contracts for a tokenized loyalty program. Their team handled planning, development and QA, with our product owner signing off each milestone. We worked together for around 5 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Blockchain Development
Project Cost:
$50,000 to $149,999
Project Duration:
Jul 2025 - Dec 2025
Business Type:
Environmental Services
Location:
Seattle, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Trueline Green Solutions LLC is a Environmental Services business in Seattle, USA. As Founder & CEO, I was responsible for this project on our side and the main contact for JSON Crew.
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?
Mainly Blockchain Development. 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?
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?
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?
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?
Definitely. We have already started talking about the next phase.

Professional AI & Machine Learning Team, Smooth Delivery From Start to Finish

Emily Ahmed / Chief Digital Officer | Jan 13, 2026

Overall we had a good experience working with JSON Crew. 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. 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.

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. I would recommend JSON Crew to anyone looking for a dependable AI & Machine Learning partner.

Project summary

We hired JSON Crew to add an AI chatbot to our support site that answers questions from our help docs. Their team handled planning, development and QA, with our product owner signing off each milestone. We worked together for around 5 months.

  • Overall Rating 4.0
  • Quality 3.5
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$500,000+
Project Duration:
Jun 2025 - Nov 2025
Business Type:
Fashion & Apparel
Location:
Reading, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Chief Digital Officer at Vertex Clothing Ltd. We operate in Fashion & Apparel and most of our customers are in and around Reading, UK.
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?
AI & Machine Learning, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
They had relevant experience in Fashion & Apparel and their proposal was the clearest of the ones we received.
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?
Yes, on time and within budget.
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 AI & Machine Learning partner.
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