Groupe Sleipnir

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Details

Founded:
2011
Hourly Rates:
$50 - $99 / hr
Employees:
10 - 49
Ratings:
4.7 9 Reviews

Industries Served

Gaming & Gambling Retail & E-commerce Aerospace & Defense Energy & Utilities Construction Advertising & Marketing Human Resources Government & Public Sector

Where We Specialize

31% Ruby on Rails
Ruby on Rails 31%
Web Development 16%
Mobile App Development 13%
Game Development 13%
Software Development 10%
Bot Development 9%
AI Development 8%

Industry Expertise

Travel54% Hospitality32% Healthcare9% Retail5%

Typical Project Size

50% Small Business
36% Enterprise
14% Midmarket Business

About

Since 2011, Groupe Sleipnir has operated as a technology services provider. The company's main offerings are Mobile App Development and Digital Marketing. The company operates with a team of 10 - 49 professionals. Projects are generally billed around $50 - $99 / hr/hr. Their home base is Caen, France. Overall, Groupe Sleipnir is one of the options worth shortlisting for a technology project.

Groupe Sleipnir Reviews

4.7 9 Reviews
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Solid Mobile App Development Work With Clear Communication Throughout

Ben Shaw / Head of Digital Transformation | Aug 29, 2026

I would rate this engagement highly on almost every front. Their project manager kept things organised and was quick to flag anything that might affect the timeline. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. 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.

We are already discussing the next phase with them.

Project summary

Groupe Sleipnir was brought in to build iOS and Android apps for our customers, including booking, payments and push notifications. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 9 months.

  • Overall Rating 4.5
  • Quality 5.0
  • Schedule 4.0
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$150,000 to $499,999
Project Duration:
Oct 2025 - Jul 2026
Business Type:
Gaming & Gambling
Location:
Nottingham, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Oakline Interactive is a Gaming & Gambling business in Nottingham, UK. As Head of Digital Transformation, I was responsible for this project on our side and the main contact for Groupe Sleipnir.
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 build iOS and Android apps for our customers, including booking, payments and push notifications.
What services did the company provide for your project?
Mobile App Development, 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?
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?
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?
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 Mobile App Development partner.

Great team to work with — professional, responsive and reliable

Olivia Ryan / Founder | Aug 22, 2026

I would rate this engagement highly on almost every front. 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. 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. We are already discussing the next phase with them.

Project summary

We engaged Groupe Sleipnir to automate document data extraction that our team was doing by hand. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 3 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
Less than $10,000
Project Duration:
Mar 2026 - Jun 2026
Business Type:
Retail & E-commerce
Location:
Perth, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Founder at Atlas Market. We operate in Retail & E-commerce and most of our customers are in and around Perth, Australia.
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?
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. Groupe Sleipnir 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?
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?
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?
Definitely. We have already started talking about the next phase.

Solid Game Development Work With Clear Communication Throughout

Oliver Holmes / Managing Director | Aug 18, 2026

Groupe Sleipnir 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 team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

We launched on schedule and have not had any major issues since.

I would recommend Groupe Sleipnir to anyone looking for a dependable Game Development partner.

Project summary

Our company worked with Groupe Sleipnir to develop a casual mobile game from concept to launch. The work covered requirements, design, development, testing and launch support. Overall it was a 2-month engagement.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Game Development
Project Cost:
$10,000 to $49,999
Project Duration:
May 2026 - Jul 2026
Business Type:
Retail & E-commerce
Location:
Leeds, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Managing Director at Crestview Retail. We operate in Retail & E-commerce and most of our customers are in and around Leeds, UK.
What specific problem or business challenge led you to hire this company?
We needed to develop a casual mobile game from concept to launch, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Game Development, plus QA and some consulting on how to structure the project.
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?
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 Game Development partner.

Good results, communication improved as the project went on

Georgia Ryan / IT Director | Aug 17, 2026

Overall the project was a success, though it was not without some challenges. 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. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

We launched on schedule and have not had any major issues since. Their team changed one developer midway, which slowed things down for a couple of weeks.

We are already discussing the next phase with them.

Project summary

We engaged Groupe Sleipnir to build a demand forecasting model on top of our sales data. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 6 months.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 4.0
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$500,000+
Project Duration:
Jan 2026 - Jul 2026
Business Type:
Aerospace & Defense
Location:
Perth, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the IT Director at Riverbend Aviation, a Aerospace & Defense company based in Perth, Australia. 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 had tried to do this internally and it stalled. We needed specialists to build a demand forecasting model on top of our sales data.
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. Groupe Sleipnir 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 Aerospace & Defense 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?
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. They are a reliable AI & Machine Learning partner.

Delivered on time and stayed involved after launch

Megan Miller / Founder | Jul 01, 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. We dealt with the same core team throughout, so we did not have to keep re-explaining things. 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. Overall, a team we trust and plan to keep working with.

Project summary

We partnered with Groupe Sleipnir to build a demand forecasting model on top of our sales data. The work covered requirements, design, development, testing and launch support. The engagement ran for about 8 months.

  • 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:
Energy & Utilities
Location:
Atlanta, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Founder at Pinecrest Power, a Energy & Utilities company based in Atlanta, 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?
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?
We compared three or four agencies. Groupe Sleipnir 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?
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?
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 would recommend them and we plan to work with them again.

Strong Technical Skills and a Very Responsive Web Development Team

Rob Clarke / Owner | Apr 09, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. 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. They shared working builds regularly, so we could test early and give feedback before things were locked in.

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

Groupe Sleipnir was brought in to rebuild a slow, outdated web app and move it to a new framework. The work covered requirements, design, development, testing and launch support. We worked together for around 8 months.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jun 2025 - Feb 2026
Business Type:
Construction
Location:
Bristol, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Construction company based in Bristol, UK. I'm the Owner and I oversaw the project from start to finish.
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 rebuild a slow, outdated web app and move it to a new framework.
What services did the company provide for your project?
Web Development, plus QA and some consulting on how to structure the project.
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?
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?
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.

A reliable long-term partner for our tech needs

Callum Doyle / Director | Mar 25, 2026

Groupe Sleipnir 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. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

We are already seeing better numbers than before the project.

If you need a team that communicates well and delivers, they are a good choice.

Project summary

We engaged Groupe Sleipnir to develop a scheduling and dispatch tool for our field team. They also took care of integrations with a couple of third-party tools we already used. The engagement ran for about 4 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$10,000 to $49,999
Project Duration:
Oct 2025 - Feb 2026
Business Type:
Advertising & Marketing
Location:
Cambridge, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Director at Beacon Creative Ltd, a Advertising & Marketing company based in Cambridge, UK. 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 develop a scheduling and dispatch tool for our field team, 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 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?
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?
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?
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?
Definitely. We have already started talking about the next phase.

Professional Game Development Team, Smooth Delivery From Start to Finish

Nora Al Qahtani / CEO | Feb 03, 2026

We were very happy with how this project went. 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. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

It has made a real difference to how our team works day to day. If you need a team that communicates well and delivers, they are a good choice.

Project summary

We partnered with Groupe Sleipnir to build the multiplayer features for our existing game. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 8-month engagement.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Game Development
Project Cost:
$50,000 to $149,999
Project Duration:
Apr 2025 - Dec 2025
Business Type:
Human Resources
Location:
Jeddah, Saudi Arabia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Human Resources company based in Jeddah, Saudi Arabia. I'm the CEO and I oversaw the project from start to finish.
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 build the multiplayer features for our existing game so they could focus on customers.
What services did the company provide for your project?
Game Development, 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. Groupe Sleipnir 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?
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?
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?
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.

Easy to work with and very transparent on timelines and cost

Mark Wallace / Managing Director | Jan 28, 2026

Our experience with Groupe Sleipnir 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. 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.

The Mobile App Development work has already made a noticeable difference — tasks that used to take hours now take minutes.

Happy to recommend them.

Project summary

We engaged Groupe Sleipnir to build iOS and Android apps for our customers, including booking, payments and push notifications. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 7-month engagement.

  • 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:
$10,000 to $49,999
Project Duration:
Apr 2025 - Nov 2025
Business Type:
Government & Public Sector
Location:
Denver, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Government & Public Sector company based in Denver, USA. I'm the Managing Director and I oversaw the project from start to finish.
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 build iOS and Android apps for our customers, including booking, payments and push notifications.
What services did the company provide for your project?
Mobile App Development, 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. Groupe Sleipnir 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?
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. 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?
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?
Definitely. We have already started talking about the next phase.
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