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Team SI

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4.3/5 (8 reviews)
+15015539321 hello@teamsi.com Visit Website

About Team SI

Team SI is a good web and mobile app development company. They have worked with clients large & small, always providing value and carrying with you by constant engagement and stay within deadlines. Their web design team will custom-design a responsive website for you that works on any device. When they meet with a client or prospective client, they do a full technical review of what the requirements/deliverables are for the project.

Last updated May 13, 2026

Services

Mobile App Development Web Development Chat Bots & AI Development Mobile App Design Crypto Exchange Development

Industries Served

Sports & Fitness Travel & Hospitality Retail & E-commerce Environmental Services Telecommunications Events & Event Management

Team SI Reviews

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Outsourced IT that improved both the outcome and the cost line simultaneously

Rupert Ashford / Director of eCommerce - Hargrove Retail PLC
Verified
May 30, 2026

Project summary: The project had a board-facing delivery date tied to a strategic initiative. We needed a partner who would treat that date as their own, not ours.

Six months after go-live our platform is processing three times the transaction volume we specified in the original brief. The architecture choices made during discovery accommodated that growth without remediation work. That is the difference between a team that designs for what you tell them and a team that designs for what you are likely to need. We are in conversation about a Phase 2 engagement and I expect to be using this partnership for several years.

PROS

Deep domain knowledge that reduced the discovery overhead significantly, proactive risk identification before issues became incidents, delivery cadence that our stakeholders found reassuring

CONS

The quality of documentation they produce means our team needed to set aside dedicated review time to do it justice — a minor scheduling point rather than a genuine criticism

4.0
Overall
4.0
Quality
3.5
Schedule
4.0
Cost
3.5
Communication
Project TypeIT Managed Services
IndustrySports & Fitness
Project Cost$50,000 to $149,999
DurationDec 2025 – Mar 2026

Questions & Answers

Please describe your company, your role, and the industry you operate in.
As Director of eCommerce at Hargrove Retail PLC I oversee technology investment and delivery across our Sports & Fitness operations in Manchester, UK. We are a commercially focused business and our technology choices are always evaluated in terms of their direct contribution to business outcomes rather than technical elegance alone.
What specific problem or business challenge led you to hire this company?
Our platform had been maintained by a previous vendor for three years and the accumulated technical debt had reached a point where delivery velocity had dropped to a fraction of what it should have been. We needed fresh engineering expertise and a structured plan to address the underlying issues.
What services did the company provide for your project?
Primarily IT Managed Services, with adjacent work in solution architecture and quality assurance. They were responsible for the full build from requirements through to go-live, including integration with four existing systems in our technology landscape. The breadth they covered without requiring additional vendors was commercially and logistically valuable.
Why did you choose this company over other providers you considered?
The quality of the questions they asked during the briefing process was the first indicator. Vendors who ask precise questions in the sales phase tend to apply the same rigour during delivery. That hypothesis proved accurate. The technical proposal was substantive, the team structure was senior throughout, and the pricing was transparent.
How clearly did the company understand your requirements and business goals?
Comprehensively. The discovery phase they ran was more thorough than anything we had experienced with previous vendors. They challenged requirements that were vague or contradictory, proposed alternatives where our initial thinking was limiting, and produced a functional specification that our internal stakeholders agreed was the clearest articulation of the product they had seen written down.
How was your overall experience with their communication and project management?
Professional and efficient. The project manager maintained a clear view of the critical path at all times and communicated changes to it transparently. The one significant scope adjustment we made mid-project was handled through a clean change request process — fairly priced, clearly documented, and absorbed without disrupting the overall timeline.
Did the company deliver the project on time and within your expected budget?
The project landed on time. The budget was managed within the agreed ceiling, which included one client-driven scope addition that was quoted fairly and handled without affecting the original delivery stream. The discipline around budget transparency throughout meant there was no surprise at invoice stage.
What tangible results or business impact have you seen since the project was completed?
We went live four months ago. User adoption exceeded the target we had set by 23 percent in the first month. Support ticket volume has dropped measurably. The features we had deferred because the previous architecture made them prohibitively expensive to build are now in development. The platform they built has opened our roadmap.
What did you like most about working with this company?
The willingness to be direct. When our requirements were unclear they said so. When our priorities were contradictory they explained why. When a technical approach we had assumed was the right one turned out to have significant downsides, they told us before we had committed to it. That kind of intellectual honesty is what I look for in a long-term technology partner.
Would you recommend this company to others, and would you work with them again?
Absolutely. With a specific note that the value starts in the discovery phase — clients who approach that process with seriousness will get the most from the engagement. We invested appropriately at the front end and the returns are evident in what was delivered.

Online store that our fulfilment and finance teams are as happy with as our customers are

Bram de Vries / Chief Technology Officer - Windmill Tech BV
Verified
Apr 18, 2026

Project summary: Our mobile app had a 2.9-star average review score. The two themes in every negative review were speed and booking flow complexity — both were solvable with the right engineering partner.

The technical quality of the final deliverable is the easiest thing to point to. The automated test coverage is thorough, the deployment pipeline is reliable, the documentation is genuinely useful rather than ceremonially produced. But the metric I keep returning to is the number of post-launch conversations we have not had to have. No incident calls at two in the morning. No emergency patches. No retrospective discussions about what went wrong. The absence of those events is the evidence I would show to someone considering this vendor.

PROS

Clear and consistent communication adapted appropriately for both technical and non-technical stakeholders, shared tooling that gave our team real-time visibility, reliable sprint delivery throughout

CONS

The engagement was priced at the quality level rather than the budget level. We evaluated the alternatives and concluded that the delta was a reasonable premium for the reduction in delivery risk

4.0
Overall
4.0
Quality
4.0
Schedule
4.5
Cost
4.0
Communication
Project TypeE-commerce Development
IndustryTravel & Hospitality
Project Cost$500,000+
DurationSep 2025 – Feb 2026

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I lead technology at Windmill Tech BV, a growth-stage Travel & Hospitality business based in Amsterdam, Netherlands. As Chief Technology Officer my remit spans product engineering, platform operations, and strategic vendor partnerships. We had reached an inflection point where our internal capacity was not sufficient to execute our roadmap at the pace our market required.
What specific problem or business challenge led you to hire this company?
A competitive threat had accelerated our roadmap. We had planned a significant E-commerce Development investment for the following year. External pressure moved that timeline forward by six months and required us to find an external partner rather than attempting to build internally in the time available.
What services did the company provide for your project?
End-to-end E-commerce Development delivery with particular depth in the integration and data migration components, which were the highest-risk elements of the programme. They supplemented this with a dedicated QA resource throughout development and a documented runbook for our operations team at handover.
Why did you choose this company over other providers you considered?
We ran a structured shortlisting process across five vendors. The technical evaluation eliminated two immediately. Of the remaining three, this team's proposal was differentiated by the specificity of their E-commerce Development approach and the evidence base they provided — reference projects in Travel & Hospitality contexts, not generic case studies. The reference calls confirmed a track record that the proposal had described accurately.
How clearly did the company understand your requirements and business goals?
Extremely well, in part because they had relevant Travel & Hospitality experience that reduced the context-setting overhead significantly. They understood the domain vocabulary, asked the right questions, and translated business requirements into technical specifications with a fidelity that meant the development phase had very few clarification cycles.
How was your overall experience with their communication and project management?
Professional and efficient. The project manager maintained a clear view of the critical path at all times and communicated changes to it transparently. The one significant scope adjustment we made mid-project was handled through a clean change request process — fairly priced, clearly documented, and absorbed without disrupting the overall timeline.
Did the company deliver the project on time and within your expected budget?
On time and within the approved budget. The estimation accuracy was notable — they had broken the work down in sufficient detail during discovery that their forecast proved reliable throughout, rather than being a number that shifted with every change in scope. We received one change request and it was for scope we had introduced ourselves.
What tangible results or business impact have you seen since the project was completed?
We went live four months ago. User adoption exceeded the target we had set by 23 percent in the first month. Support ticket volume has dropped measurably. The features we had deferred because the previous architecture made them prohibitively expensive to build are now in development. The platform they built has opened our roadmap.
What did you like most about working with this company?
The willingness to be direct. When our requirements were unclear they said so. When our priorities were contradictory they explained why. When a technical approach we had assumed was the right one turned out to have significant downsides, they told us before we had committed to it. That kind of intellectual honesty is what I look for in a long-term technology partner.
Would you recommend this company to others, and would you work with them again?
Unreservedly. We are in active scoping conversations for a second engagement and I expect this to develop into a multi-year partnership. For any organisation in the Travel & Hospitality sector looking for E-commerce Development expertise combined with genuine delivery discipline, I would put this team at the top of the evaluation list.

Exceeded all expectations — highly recommended

James Wilson / IT Director - Enterprise Systems
Verified
Apr 11, 2026

Project summary: Our hospitality group required a guest experience platform integrating PMS, CRM, and loyalty programmes.

The team demonstrated exceptional technical depth throughout every phase of the project. Communication was proactive and transparent — we always knew exactly where things stood. They challenged our assumptions constructively and suggested improvements that made the final product significantly better than our original spec. Delivery was on schedule, the code quality was outstanding, and post-launch support has been prompt and thorough. We could not have asked for a better partner.

PROS

Strong engineering skills, clear and consistent communication, flexible and collaborative approach

CONS

Slightly higher day rate than some alternatives, but the quality justifies every penny

5.0
Overall
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
Project TypeIT Managed Services
IndustryTravel & Hospitality
Project CostLess than $10,000
DurationMay 2025 – Feb 2026

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We are a IT Director-led organisation operating in the Travel & Hospitality sector. My role involves overseeing strategic technology decisions and vendor partnerships. We have been growing steadily and needed a trusted partner to help us scale our digital capabilities.
What specific problem or business challenge led you to hire this company?
Our primary challenge was modernising our Travel & Hospitality operations through IT Managed Services. Legacy systems were limiting our agility and we needed a solution that could scale with our growth ambitions and integrate with our existing infrastructure.
What services did the company provide for your project?
They delivered a comprehensive IT Managed Services engagement covering requirements analysis, solution architecture, full-cycle development, QA testing, deployment, and post-launch support. The scope was well-defined and executed without scope creep.
Why did you choose this company over other providers you considered?
Their demonstrated expertise in IT Managed Services and a strong portfolio of Travel & Hospitality projects set them apart during our evaluation. The discovery call gave us confidence they truly understood our domain, not just the technology.
How clearly did the company understand your requirements and business goals?
Exceptionally well. They ran a structured discovery process, asked insightful questions, and produced a detailed requirements document that captured nuances we hadn't even articulated ourselves. That foundation made the entire project smoother.
How was your overall experience with their communication and project management?
Outstanding. We had a dedicated project manager, weekly status calls, a shared project board, and same-day responses to queries. There were no surprises — risks were flagged early and resolved before they became issues.
Did the company deliver the project on time and within your expected budget?
Yes, the project was delivered on the agreed date and within budget. Their estimates were realistic and they managed scope carefully, flagging any potential changes before they impacted the timeline or cost.
What tangible results or business impact have you seen since the project was completed?
Significant. Since go-live we have seen measurable improvements in operational efficiency, customer satisfaction scores have risen, and the solution has already paid back a substantial portion of the investment. The team built something we are genuinely proud of.
What did you like most about working with this company?
Their genuine investment in our success. They didn't just execute a spec — they brought ideas, challenged assumptions, and cared about the outcome as much as we did. The quality of the codebase and documentation also stood out.
Would you recommend this company to others, and would you work with them again?
Absolutely and without hesitation. We have already referred two colleagues, and we are actively scoping the next phase of work with them. They are our go-to partner for IT Managed Services projects going forward.

Compliance programme delivered on time and approved by the regulator without remediation

Sebastian Lapointe / CTO - Boreal Systems Inc
Verified
Apr 05, 2026

Project summary: Customer expectations had reset and our conversion funnel data showed precisely where we were losing them. We needed a commerce platform capable of delivering the experience our competitors already had.

I came into this engagement as a sceptic. We had been through a failed implementation with a previous vendor and I had high standards for what evidence of competence looked like before I would trust a partner with our core systems. This team earned that trust progressively — through the quality of the discovery documentation, the rigour of the technical proposals, the consistency of the sprint deliveries, and ultimately the stability of the production system. I no longer lead with scepticism when recommending them.

PROS

Architectural decisions designed for longevity rather than just the current brief, thorough automated test coverage, post-launch stability that validated every technical choice made during discovery

CONS

The quality of documentation they produce means our team needed to set aside dedicated review time to do it justice — a minor scheduling point rather than a genuine criticism

4.0
Overall
4.0
Quality
3.5
Schedule
3.5
Cost
4.0
Communication
Project TypeCybersecurity
IndustryRetail & E-commerce
Project Cost$50,000 to $149,999
DurationAug 2025 – Feb 2026

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I lead technology at Boreal Systems Inc, a growth-stage Retail & E-commerce business based in Toronto, Canada. As CTO my remit spans product engineering, platform operations, and strategic vendor partnerships. We had reached an inflection point where our internal capacity was not sufficient to execute our roadmap at the pace our market required.
What specific problem or business challenge led you to hire this company?
A competitive threat had accelerated our roadmap. We had planned a significant Cybersecurity investment for the following year. External pressure moved that timeline forward by six months and required us to find an external partner rather than attempting to build internally in the time available.
What services did the company provide for your project?
End-to-end Cybersecurity delivery with particular depth in the integration and data migration components, which were the highest-risk elements of the programme. They supplemented this with a dedicated QA resource throughout development and a documented runbook for our operations team at handover.
Why did you choose this company over other providers you considered?
A trusted peer in the Retail & E-commerce sector had used them for a comparable Cybersecurity engagement and their recommendation was unequivocal. Our own due diligence confirmed the pattern they described. The combination of domain knowledge, Cybersecurity depth, and demonstrated delivery discipline was the deciding factor.
How clearly did the company understand your requirements and business goals?
Better than we managed ourselves going in. The workshops they facilitated surfaced assumptions we had not examined and exposed three requirements that were in direct conflict with each other. Resolving those before development began saved us what would certainly have been significant rework later in the project.
How was your overall experience with their communication and project management?
Outstanding. The discipline around asynchronous communication was particularly effective given the time zones involved between Toronto, Canada and the delivery team. Written updates were specific and consistent, response times were same-day for anything that required a decision, and nothing fell through the cracks across a six-month engagement.
Did the company deliver the project on time and within your expected budget?
On time and within the approved budget. The estimation accuracy was notable — they had broken the work down in sufficient detail during discovery that their forecast proved reliable throughout, rather than being a number that shifted with every change in scope. We received one change request and it was for scope we had introduced ourselves.
What tangible results or business impact have you seen since the project was completed?
The most direct measure is the performance of the system in production. In the five months since go-live we have had zero P1 incidents, our page performance scores have improved across every Core Web Vitals metric, and two enterprise clients who had cited our previous platform limitations during contract negotiations have since renewed without that objection arising.
What did you like most about working with this company?
The continuity of the team. The engineers who participated in the discovery sessions were the engineers who built the system. That consistency of institutional knowledge across a six-month project has a value that is difficult to quantify but easy to notice when it is absent. Every conversation built on the previous ones.
Would you recommend this company to others, and would you work with them again?
Yes. I would add the context that this is not the cheapest option in the market and they are selective about the engagements they take on. If your primary criterion is price, there are alternatives. If you want a technology partner who can be trusted with a complex Cybersecurity programme in the Retail & E-commerce space and will deliver against a serious brief, this is the team.

User research that uncovered friction we had stopped noticing because it was always there

Omar Al-Farsi / Chief Technology Officer - Falcon Digital Ventures
Verified
Feb 24, 2026

Project summary: A previous engagement had delivered something that worked in staging and struggled in production. We approached this project with greater rigour in vendor selection as a result.

Six months after go-live our platform is processing three times the transaction volume we specified in the original brief. The architecture choices made during discovery accommodated that growth without remediation work. That is the difference between a team that designs for what you tell them and a team that designs for what you are likely to need. We are in conversation about a Phase 2 engagement and I expect to be using this partnership for several years.

PROS

Collaborative culture that made the team feel like a genuine extension of our organisation, strong asynchronous communication across time zones, zero-drama handling of the inevitable mid-project changes

CONS

Time zone coordination required some deliberate overlap management from both sides in the first couple of sprints, after which we had an efficient async rhythm that worked for the whole project

4.0
Overall
3.5
Quality
3.5
Schedule
3.5
Cost
4.0
Communication
Project TypeUI/UX Design
IndustryEnvironmental Services
Project Cost$150,000 to $499,999
DurationApr 2025 – Dec 2025

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Falcon Digital Ventures is an established Environmental Services organisation headquartered in Dubai, UAE. My role as Chief Technology Officer covers both strategic planning and operational technology delivery. We maintain high standards for our vendors because our clients hold us to high standards — a bar we expect our partners to meet.
What specific problem or business challenge led you to hire this company?
Regulatory requirements in our Environmental Services segment had changed and the compliance timeline was set by our regulator, not by us. The UI/UX Design changes required were significant enough to justify engaging a specialist partner rather than diverting our internal team from the product roadmap.
What services did the company provide for your project?
The scope covered the full UI/UX Design lifecycle: discovery and requirements definition, solution architecture, iterative development across twelve sprints, integration testing, performance validation, production deployment, and a structured four-week hypercare period. They also provided system documentation and a knowledge transfer programme for our internal team.
Why did you choose this company over other providers you considered?
We ran a structured shortlisting process across five vendors. The technical evaluation eliminated two immediately. Of the remaining three, this team's proposal was differentiated by the specificity of their UI/UX Design approach and the evidence base they provided — reference projects in Environmental Services contexts, not generic case studies. The reference calls confirmed a track record that the proposal had described accurately.
How clearly did the company understand your requirements and business goals?
Better than we managed ourselves going in. The workshops they facilitated surfaced assumptions we had not examined and exposed three requirements that were in direct conflict with each other. Resolving those before development began saved us what would certainly have been significant rework later in the project.
How was your overall experience with their communication and project management?
Outstanding. The discipline around asynchronous communication was particularly effective given the time zones involved between Dubai, UAE and the delivery team. Written updates were specific and consistent, response times were same-day for anything that required a decision, and nothing fell through the cracks across a six-month engagement.
Did the company deliver the project on time and within your expected budget?
The project landed on time. The budget was managed within the agreed ceiling, which included one client-driven scope addition that was quoted fairly and handled without affecting the original delivery stream. The discipline around budget transparency throughout meant there was no surprise at invoice stage.
What tangible results or business impact have you seen since the project was completed?
The ROI case we presented to our board was conservative by design. Current performance against the financial model suggests we will hit the projected payback point in under twelve months against an eighteen-month target. The operational efficiency gains in particular have exceeded the model, in part because the quality of the data the new platform generates supports decisions that the previous system could not.
What did you like most about working with this company?
Their instinct for keeping the business objective visible throughout technical decision-making. I have worked with technically excellent teams who lose the strategic thread as complexity increases. This team maintained a clear connection between every architectural choice and the outcome we had agreed to achieve. That orientation made the trade-off conversations significantly easier.
Would you recommend this company to others, and would you work with them again?
Yes, without reservation. I have already made two direct referrals within my Environmental Services network — in both cases to peers facing UI/UX Design challenges similar to ours. I gave those referrals with confidence because I knew the experience I described was reproducible, not the result of exceptional circumstances on our engagement.

Company Info

Founded 2010
Employees 50 - 249
Hourly Rate < $25
Client Rating 4.3/5 (8 reviews)

Rating Breakdown

Quality
4.3
Schedule
4.1
Cost
4.3
Communication
4.2

FAQs

What happens with Team SI after the project actually launches?
Like most established software teams, Team SI typically sticks around post-launch for ongoing maintenance — bug fixes, performance tuning, security patching, new feature work, and general technical support. For context, it has experience across industries such as Events & Event Management, Travel & Hospitality, Retail & E-commerce, Environmental Services, Sports & Fitness and Telecommunications, and it reports a team size of 50 - 249 professionals.
What's the easiest way to actually get in touch with Team SI?
Most businesses reach Team SI through its website, a direct email, or a contact form — any of which works for discussing what you need, booking an initial conversation, or asking for a rough estimate. For context, its listed capabilities span Crypto Exchange Development, Chat Bots & AI Development, Mobile App Design, Web Development and Mobile App Development, and it has been operating since 2010.
How do I actually get a real proposal out of Team SI instead of a generic reply?
The most reliable route is giving Team SI a clear, specific brief up front — through their website form, a direct email, or a call — since a vague ask tends to get a vague answer back, while a concrete one usually gets a proper estimate. For context, its listed capabilities span Crypto Exchange Development, Chat Bots & AI Development, Mobile App Design, Web Development and Mobile App Development, and it has been operating since 2010.
What should I expect to pay to work with Team SI?
What Team SI charges comes down to a handful of variables — how complex the project is, the number of development hours involved, the tech stack required, team size, and which engagement model you pick. Based on available data, Team SI's typical hourly rate is around < $25, with an average project cost of $10000+.
Would Team SI be a good fit for an early-stage startup?
Generally, yes — companies like Team SI tend to work well with startups because of what they typically offer: MVP builds, product strategy input, architecture that can scale later, and dedicated teams that keep costs manageable while still moving fast. For context, it has experience across industries such as Events & Event Management, Travel & Hospitality, Retail & E-commerce, Environmental Services, Sports & Fitness and Telecommunications, and it reports a team size of 50 - 249 professionals.
Does Team SI only work locally, or take on clients elsewhere too?
Team SI isn't necessarily limited to one region and may take on clients across several countries, depending on market demand and business partnerships.
What's actually in Team SI's technical toolkit?
The exact stack shifts by project, but Team SI commonly works across things like React, Angular, Vue.js, Node.js, Python, .NET, Java, PHP, Flutter, React Native, native iOS and Android, and cloud platforms like AWS and Azure. For context, its listed capabilities span Crypto Exchange Development, Chat Bots & AI Development, Mobile App Design, Web Development and Mobile App Development, and it reports a team size of 50 - 249 professionals.
Does Team SI actually build with AI, or just talk about it?
Plenty of modern software teams, Team SI included, now build real AI and machine learning features — chatbots, predictive models, computer vision, and automation that goes beyond simple rule-based scripts. For context, it has experience across industries such as Events & Event Management, Travel & Hospitality, Retail & E-commerce, Environmental Services, Sports & Fitness and Telecommunications, and it has been operating since 2010.
What makes Team SI worth considering over other options?
What tends to set Team SI apart usually comes down to some mix of technical depth, relevant industry experience, how clients describe working with them, their development approach, communication habits, and whether they can actually deliver something that scales. Founded in 2010, the company has built a track record of delivering projects across various industries.
What does Team SI's actual delivery process look like week to week?
Team SI generally runs something close to a standard structured process — requirements gathering, UI/UX design, development in agile sprints, QA testing along the way, deployment, and support once it's live. For context, it has experience across industries such as Events & Event Management, Travel & Hospitality, Retail & E-commerce, Environmental Services, Sports & Fitness and Telecommunications, and it reports a team size of 50 - 249 professionals.

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