Seisan

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Details

Founded:
1994
Hourly Rates:
Undisclosed
Employees:
10 - 49
Ratings:
4.8 10 Reviews

Industries Served

Logistics & Supply Chain Environmental Services Advertising & Marketing Telecommunications Aerospace & Defense Pharmaceuticals & Biotechnology Retail & E-commerce Automotive Construction

Where We Specialize

25% Game Development
Game Development 25%
Software Development 23%
AI Development 19%
Mobile App Development 12%
Bot Development 10%
Augmented Reality 5%
Unity 3D Game Development 4%
Web Development 2%

Industry Expertise

Education60% Logistics40%

Typical Project Size

38% Enterprise
36% Small Business
26% Midmarket Business

About

Seisan is a technology company founded in 1994. Their core services include Mobile App Development and Custom Software Development. The company operates with a team of 10 - 49 professionals. Clients have rated Seisan 4.8 out of 5 in 8 reviews. Their home base is Lancaster, PA. This gives a quick snapshot of what to expect when working with Seisan.

Seisan Reviews

4.8 10 Reviews
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Exceeded our expectations on quality and communication

Julia Fischer / Co-Founder | Oct 20, 2026

Our experience with Seisan was really positive from start to finish. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

The result looks great and performs well, and our internal team found it easy to take over. I would recommend Seisan to anyone looking for a dependable Software Development partner.

Project summary

We partnered with Seisan 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. The project took roughly 8 months from kickoff to launch.

  • Overall Rating 4.5
  • Quality 5.0
  • Schedule 4.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
Less than $10,000
Project Duration:
Jan 2026 - Sep 2026
Business Type:
Logistics & Supply Chain
Location:
Berlin, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Redwood Logistics GmbH is a Logistics & Supply Chain business in Berlin, Germany. As Co-Founder, I was responsible for this project on our side and the main contact for Seisan.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build a custom operations platform to replace the spreadsheets and email threads we were running the business on before our busy season.
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?
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?
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?
Definitely. We have already started talking about the next phase.

Skilled Mobile App Development Team That Understood Our Business

Chris Foster / Co-Founder | Oct 05, 2026

Seisan did an excellent job for us. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. We dealt with the same core team throughout, so we did not have to keep re-explaining things. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

The Mobile App Development work has already made a noticeable difference — tasks that used to take hours now take minutes. Overall, a team we trust and plan to keep working with.

Project summary

We hired Seisan to rebuild our existing mobile app, which had poor reviews and frequent crashes. Their team handled planning, development and QA, with our product owner signing off each milestone. The project took roughly 5 months from kickoff to launch.

  • 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:
$10,000 to $49,999
Project Duration:
Mar 2026 - Aug 2026
Business Type:
Environmental Services
Location:
Portland, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Co-Founder at Crestview Environmental Inc. We operate in Environmental Services and most of our customers are in and around Portland, 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 rebuild our existing mobile app, which had poor reviews and frequent crashes.
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?
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?
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, I would recommend them and we plan to work with them again.

Delivered on time and stayed involved after launch

Jason Hayes / Director | Sep 07, 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. 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. We would definitely work with them again.

Project summary

Our company worked with Seisan to rebuild a slow, outdated web app and move it to a new framework. Their team handled planning, development and QA, with our product owner signing off each milestone. We worked together for around 2 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$10,000 to $49,999
Project Duration:
May 2026 - Jul 2026
Business Type:
Advertising & Marketing
Location:
Phoenix, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Westbridge Creative is a Advertising & Marketing business in Phoenix, USA. As Director, I was responsible for this project on our side and the main contact for Seisan.
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 rebuild a slow, outdated web app and move it to a new framework so they could focus on customers.
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 Advertising & Marketing 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?
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?
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 Web Development partner.

A reliable long-term partner for our tech needs

Noura Khan / Co-Founder | Aug 29, 2026

Our experience with Seisan 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. 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. We would definitely work with them again.

Project summary

We engaged Seisan 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. The project took roughly 2 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:
Software Development
Project Cost:
$10,000 to $49,999
Project Duration:
Jun 2026 - Aug 2026
Business Type:
Telecommunications
Location:
Dubai, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Telecommunications company based in Dubai, UAE. I'm the Co-Founder 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 a custom operations platform to replace the spreadsheets and email threads we were running the business on.
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?
We compared three or four agencies. Seisan 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 Telecommunications clients before.
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?
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.

Seisan Delivered a Quality Software Development Solution on Time

Daan Bakker / Founder & CEO | Aug 05, 2026

We were very happy with how this project went. 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. 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 partnered with Seisan to develop a scheduling and dispatch tool for our field team. The work covered requirements, design, development, testing and launch support. The project took roughly 6 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:
Software Development
Project Cost:
Less than $10,000
Project Duration:
Nov 2025 - May 2026
Business Type:
Logistics & Supply Chain
Location:
Eindhoven, Netherlands

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Logistics & Supply Chain company based in Eindhoven, Netherlands. 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 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?
They had relevant experience in Logistics & Supply Chain 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?
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, I've already recommended them to a couple of people I know.

Good value and a team that genuinely cares about the result

Niamh O'Connor / Senior Product Manager | Jul 19, 2026

Seisan did an excellent job for us. They were upfront about what was realistic within our budget, which helped us prioritise the right features. 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. Overall, a team we trust and plan to keep working with.

Project summary

Seisan was brought in to develop a scheduling and dispatch tool for our field team. The work covered requirements, design, development, testing and launch support. The project took roughly 6 months from kickoff to launch.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Software Development
Project Cost:
$500,000+
Project Duration:
Dec 2025 - Jun 2026
Business Type:
Aerospace & Defense
Location:
Cork, Ireland

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Aerospace & Defense company based in Cork, Ireland. I'm the Senior Product Manager 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 develop a scheduling and dispatch tool for our field team.
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?
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. 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 would recommend them and we plan to work with them again.

Seisan Delivered a Quality Mobile App Development Solution on Time

Lena Fischer / Senior Engineering Manager | Feb 25, 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. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

We are already seeing better numbers than before the project.

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

Project summary

Our company worked with Seisan to develop a field-staff app with offline mode that syncs back to our main system. They worked alongside our in-house team, which mostly handled business requirements and testing. Overall it was a 8-month engagement.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Jun 2025 - Feb 2026
Business Type:
Pharmaceuticals & Biotechnology
Location:
Berlin, Germany

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Fairway Pharma GmbH is a Pharmaceuticals & Biotechnology business in Berlin, Germany. As Senior Engineering Manager, I was responsible for this project on our side and the main contact for Seisan.
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 Pharmaceuticals & Biotechnology 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?
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.

Skilled Game Development Team That Understood Our Business

Vikram Menon / IT Director | Feb 11, 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. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

The result looks great and performs well, and our internal team found it easy to take over. Overall, a team we trust and plan to keep working with.

Project summary

We partnered with Seisan to build the multiplayer features for our existing game. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 3 months.

  • 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:
$500,000+
Project Duration:
Sep 2025 - Dec 2025
Business Type:
Retail & E-commerce
Location:
Jaipur, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as IT Director at Horizon Retail Pvt Ltd. We operate in Retail & E-commerce and most of our customers are in and around Jaipur, India.
What specific problem or business challenge led you to hire this company?
We needed to build the multiplayer features for our existing game, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Mainly Game 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?
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?
Yes, I would recommend them and we plan to work with them again.

Professional team that made a complex project feel manageable

Priya Johnson / VP of Engineering | Jan 04, 2026

Seisan did an excellent job for us. 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. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

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

I would recommend Seisan to anyone looking for a dependable Web Development partner.

Project summary

We hired Seisan to build a customer portal where clients can log in, track orders and download invoices. The work covered requirements, design, development, testing and launch support. Overall it was a 7-month engagement.

  • 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:
May 2025 - Dec 2025
Business Type:
Automotive
Location:
Nashville, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Automotive company based in Nashville, USA. I'm the VP of Engineering and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build a customer portal where clients can log in, track orders and download invoices before our busy season.
What services did the company provide for your project?
Mainly Web 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?
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?
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?
Definitely. We have already started talking about the next phase.

Would happily work with them again

Emma Thompson / IT Director | Jan 02, 2026

I would rate this engagement highly on almost every front. 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. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

Feedback from our customers has been very positive so far.

Happy to recommend them.

Project summary

We partnered with Seisan to redesign and rebuild our company website on a modern stack. They also took care of integrations with a couple of third-party tools we already used. The engagement ran for about 6 months.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
Web Development
Project Cost:
$500,000+
Project Duration:
May 2025 - Nov 2025
Business Type:
Construction
Location:
Edmonton, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Construction company based in Edmonton, Canada. I'm the IT Director 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 redesign and rebuild our company website on a modern stack so they could focus on customers.
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?
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?
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?
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.
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