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B2B Full-Cycle Product Development Bureau for SaaS

YOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS

U1CORE is a product studio for the products where buyers, sellers, and operators meet, transact, and trust each other. 

Marketplaces, exchanges, auction systems, fundraising platforms, and operational CRMs with multi-role logic.

🔔 Book a Free Call: 
https://calendly.com/hello-u1core/30min

or visit our website - https://www.u1core.com/

OUR SERVICES: 

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    Madrid, Spain
  • Year founded
    Founded 2019
  • Languages
  • Timezones

Overview by:

Reviewer avatar
Taras Oliinyk

1 Language that we service

  • English

28 Timezones that we service

ACT
Australia Central Time (ACT)
AGT
Argentina Standard Time (AGT)
AKST
Alaska Standard Time (AKST)
ART
(Arabic) Egypt Standard Time (ART)
AST
Arabia Standard Time (AST)
AET
Australia Eastern Time (AET)
BST
Bangladesh Standard Time (BST)
BET
Brazil Eastern Time (BET)
CAT
Central African Time (CAT)
CET
Central European Time (CET)
CNT
Canada Newfoundland Time (CNT)
COT
Colombia Time (COT)
CST
Central Standard Time (CST)
EST
Eastern Standard Time (EST)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
IDT
Israel Daylight Time (IDT)
IST
India Standard Time (IST)
JST
Japan Standard Time (JST)
MET
Middle East Time (MET)
MST
Mountain Standard Time (MST)
NET
Near East Time (NET)
NST
New Zealand Standard Time (NST)
PST
Pacific Standard Time (PST)
SGT
Singapore Standard Time (SGT)
SST
Solomon Standard Time (SST)
UTC
Universal Coordinated Time (UTC)
VST
Vietnam Standard Time (VST)

1 Locations

  • Madrid , Spain

Service Lines
Select Focus Area
CMS Focus
Adobe Experience Manager CMS
100%
Frameworks and CMS
User Experience Focus
Industries
Sports
20%
Advertising & marketing
15%
Business services
15%
Financial services
15%
Information technology
15%
Consumer products & services
10%
Real estate
10%
Clients
Midmarket ($10M - $1B)
80%
Enterprise (>$1B)
20%

Pricing Snapshot

Min. project size $25,000+
Avg. hourly rate $50 - $99 /hr
Rating for cost 5 /5

What Clients Have Said

U1CORE offers competitive pricing with good value for cost, as highlighted by clients who noted budget alignment and efficient project management. Specific project costs mentioned include an investment of approximately €7,000 and $25,000 for various services, indicating flexibility for different client sizes.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 63 reviews
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

U1CORE - UI/UX and Dev Partner Review Insights

Overall Review Rating

5.0
  • Quality 5.0
  • Schedule 5.0
  • Cost 5.0
  • Willing to Refer 5.0

Top Mentions

Review Highlights

  • Effective Communication and Responsiveness

    Clients noted U1CORE's effective communication and responsiveness to feedback. The team was praised for their ability to quickly adapt to changes and maintain open lines of communication.

  • Areas for Improvement in Timeline and Budget Management

    While generally positive, some feedback suggested room for improvement in managing timelines and budgets, indicating occasional delays and budget overruns.

  • Impressive Collaboration and Partnership

    Clients felt that U1CORE acted as true partners rather than just service providers, contributing ideas, anticipating needs, and aligning closely with clients' strategic goals.

  • Proactive and Strategic Approach

    U1CORE's proactive approach and strategic thinking were frequently highlighted. They often suggested solutions that clients had not considered, showcasing their deep understanding of business goals.

  • High-Quality UI/UX Design Services

    Clients praised U1CORE for delivering visually stunning and intuitive UI/UX designs. Their attention to detail and ability to translate complex ideas into user-friendly experiences were highly valued.

  • Strong Customer Service and Support

    Clients appreciated U1CORE's customer service, noting their willingness to go above and beyond to meet client needs, provide ongoing support, and ensure high client satisfaction.

U1CORE - UI/UX and Dev Partner Reviews

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Services
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Industry
Location

UI/UX Design & Web Development for Software Dev Company

  • UX/UI Design Web Design Web Development
  • Less than $10,000
  • Feb. - Apr. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We paid for expertise, not just execution, and they provided us with both."

Jun 10, 2026
CMO, Software Development Company
Anonymous
Verified
  • Information technology
  • England
  • 51-200 Employees
  • Online Review
  • Verified

U1CORE - UI/UX and Dev Partner overhauled the marketing and course catalog sections of a software development company's platform. The team provided frontend development, CMS configuration, and SEO migration.

Web Dev for Blockchain Dev Company

  • Web Design Web Development
  • WordPress CMS
    +1
  • $50,000 to $199,999
  • Feb. - Apr. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Working with them gave us the feeling that we have a true technology partner, not just a service provider."

May 4, 2026
SalesOps Manager, Peiko
Hanna Vasylchenko
Verified
  • Information technology
  • Estonia
  • 51-200 Employees
  • Online Review
  • Verified

U1CORE - UI/UX and Dev Partner developed a platform for a blockchain development company. They built a property listing module, integrated a client dashboard, and added a blog and resources section.

Web Dev & Design for AI Solutions Company

  • UX/UI Design Web Design Web Development
  • UX Strategy
    +1
  • $50,000 to $199,999
  • Jan. - May 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What truly set them apart was their deep focus on UX strategy even before they wrote a single line of code."

May 4, 2026
Co-Founder, DestiLabs
Iryna Yurchenko
Verified
  • Business services
  • Lisbon, Portugal
  • 1-10 Employees
  • Online Review
  • Verified

U1CORE - UI/UX and Dev Partner designed and developed a new corporate website for an AI solutions company's client. The team created the UX/UI design and developed the front end using React.

Web Design & Dev for SEO Company

  • UX/UI Design Web Development
  • $10,000 to $49,999
  • June 2025 - Jan. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were most impressed by their ability to combine strategic thinking with practical implementation."

Feb 18, 2026
Sales Manager, Equinox Dynamics
Vitaliy Kryvoruchko
Verified
  • Advertising & marketing
  • Aveiro, Portugal
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE designed and developed a WordPress news website for an SEO company. The team conducted UX research, analyzed competitors, created mockups, and built an SEO-oriented site.

Web UX/UI Redesign for Mobile Product Development Company

  • UX/UI Design Web Design
  • UX Strategy
  • Less than $10,000
  • Jan. - Feb. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What impressed us most was how U1CORE combines strategic thinking with design implementation."

Feb 13, 2026
Business Assistant, LYQX
Yaryna Vdovyn
Verified
  • Information technology
  • San Francisco, California
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE provided UX/UI redesign services for a mobile product development company. The team redesigned the client's website, improving the user journey and the online presentation of their products.

Branding Services for Motion Design Company

  • Branding Web Design
  • $10,000 to $49,999
  • Dec. 2025 - Jan. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their creativity and strategic thinking were top-notch."

Feb 2, 2026
CEO, Impact Frames
Nikita Skopych
Verified
  • Advertising & marketing
  • Valencia, Spain
  • 1-10 Employees
  • Online Review
  • Verified

U1CORE developed a brand strategy for a motion design company. The team conducted in-depth research to define the client's market position, create resonant messages, and provide a set of brand guidelines.

E-Commerce Development for Software Dev Company

  • E-Commerce Development UX/UI Design
  • Other frameworks and CMS
    +1
  • $10,000 to $49,999
  • Oct. - Nov. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The most impressive aspect of U1CORE was their ability to provide flexible changes at no additional cost."

Nov 27, 2025
COO, CodePhusion
Myroslav Syrko
Verified
  • Other industries
  • London, England
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE developed a WordPress e-commerce website for a custom software development company's end customer. The team created wireframes, integrated e-commerce features, and built a site with a user-friendly UI.

Website Design & Development for Email Marketing Agency

  • UX/UI Design Web Design Web Development
  • Less than $10,000
  • Feb. - Mar. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They delivered exactly what was promised and exceeded expectations."

Nov 12, 2025
CEO, Inboxio
Andrii Pohibko
Verified
  • Advertising & marketing
  • Kyiv, Ukraine
  • 1-10 Employees
  • Online Review
  • Verified

U1CORE designed and developed a website for an email marketing agency. The team aimed to create a professional and modern site that reflected the brand, was mobile-optimized, and scalable for future growth.

UI/UX Design for IT Agency

  • UX/UI Design
  • Less than $10,000
  • Apr. 2025 - Ongoing
4.5
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"We've had quite a few very good collaborations with U1CORE and have had an excellent experience so far."

Nov 3, 2025
Co-Founder, PLEPO
Eugene Chumak
Verified
  • Information technology
  • Riga, Latvia
  • 1-10 Employees
  • Phone Interview
  • Verified

U1CORE has provided UI/UX design services for an IT agency's e-commerce platform and end clients. The team has made suggestions to improve the platform's CRO and made product and collection page improvements.

Digital Product Subscription

🎯 Your Flexible Design Department That Scales With Your Business Perfect for: Startups and companies that need consistent, high-quality design without hiring in-house. Product teams that value speed, flexibility, and constant designer availability. Teams looking to scale design output without adding management overhead.

Small

Perfect for early-stage startups or small teams

$3,800 /month
  • UI Design
  • 1 active request at a time
  • 2–3 day average turnaround
  • Unlimited queued requests
  • Services:

Large

For companies that need even more

$9,999 /month
  • Unlimited queued requests
  • 1-day onboarding
  • Cancel anytime
  • 75% refund after the first week if unsatisfied
  • Custom number of active requests
Features

Small

$3,800

/mo

Medium

$4,900

/mo

Large

$9,999

/mo

UI Design

1 active request at a time

2–3 day average turnaround

Unlimited queued requests

Services:

1-day onboarding

Cancel anytime

75% refund after the first week if unsatisfied

Up to 3 active requests at a time

1–2 day average turnaround

All services from BASIC + more:

Priority support

Daily updates, demos & progress tracking

Monthly strategy call

Unlimited team members

Unlimited revisions

Dedicated dashboard

Custom number of active requests

Team assembled specifically for your needs (designers, devs, PMs)

Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

Ability to work in a hybrid setup with your in-house team

Custom terms for NDA, priority, reporting, and invoicing

Select only specific services if needed

Everything from PRO + extras like:

Small

$3,800

/mo

UI Design

1 active request at a time

2–3 day average turnaround

Unlimited queued requests

Services:

1-day onboarding

Cancel anytime

75% refund after the first week if unsatisfied

Up to 3 active requests at a time

1–2 day average turnaround

All services from BASIC + more:

Priority support

Daily updates, demos & progress tracking

Monthly strategy call

Unlimited team members

Unlimited revisions

Dedicated dashboard

Custom number of active requests

Team assembled specifically for your needs (designers, devs, PMs)

Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

Ability to work in a hybrid setup with your in-house team

Custom terms for NDA, priority, reporting, and invoicing

Select only specific services if needed

Everything from PRO + extras like:

Medium

$4,900

/mo

UI Design

1 active request at a time

2–3 day average turnaround

Unlimited queued requests

Services:

1-day onboarding

Cancel anytime

75% refund after the first week if unsatisfied

Up to 3 active requests at a time

1–2 day average turnaround

All services from BASIC + more:

Priority support

Daily updates, demos & progress tracking

Monthly strategy call

Unlimited team members

Unlimited revisions

Dedicated dashboard

Custom number of active requests

Team assembled specifically for your needs (designers, devs, PMs)

Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

Ability to work in a hybrid setup with your in-house team

Custom terms for NDA, priority, reporting, and invoicing

Select only specific services if needed

Everything from PRO + extras like:

Large

$9,999

/mo

UI Design

1 active request at a time

2–3 day average turnaround

Unlimited queued requests

Services:

1-day onboarding

Cancel anytime

75% refund after the first week if unsatisfied

Up to 3 active requests at a time

1–2 day average turnaround

All services from BASIC + more:

Priority support

Daily updates, demos & progress tracking

Monthly strategy call

Unlimited team members

Unlimited revisions

Dedicated dashboard

Custom number of active requests

Team assembled specifically for your needs (designers, devs, PMs)

Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

Ability to work in a hybrid setup with your in-house team

Custom terms for NDA, priority, reporting, and invoicing

Select only specific services if needed

Everything from PRO + extras like:

Our Story

We transform successful products into unicorns.

We are the growth partner that turns your existing product into a scalable revenue machine. Through a combination of enterprise-grade development, specialized design, and targeted Go-To-Market strategy, we help established businesses capture market share and accelerate growth.

  • 300+ Projects: From mid-market to enterprise scale.
  • $20M+ Revenue: Quantifiable success for our clients.
  • High Retention: 9 out of 10 clients come to us through recommendation

Meet the Team

U1CORE Bureau

U1CORE BureauTeam

U1CORE: UX Product Design & Development Services for SaaS, FinTech, Web3 & AI At U1CORE, we specialize in transforming innovative ideas into high-performing digital products. As a B2B Product Design & Development Powerhouse, we create seamless user

Taras Oliinyk

Taras OliinykCEO

🚀 CEO at U1CORE | Elevating Startups to Market Leadership with Strategic Design 🔥 As the CEO of U1CORE, I lead a design powerhouse, not just any agency. With over five years of collective experience, our team of UI/UX wizards uses an insatiable hu

Oleksandr Viktorov.

Oleksandr Viktorov.BDM

Yulia Braslavets

Yulia BraslavetsPM

PM at U1CORE | Keeping projects on track, teams aligned, and clients happy. Turning complex briefs into smooth workflows and delivered results — on time, every time.

What Sets Us Apart

Built for Growth-Stage Products

We specialize in startups and scale-ups that need more than a pretty interface — they need a product that converts, retains, and grows. Our work is designed to perform, not just to impress.

End-to-End Ownership

From the first discovery call to the final handoff, we own the entire process. No handoffs to mystery subcontractors, no gaps between design and development. One team, full accountability, consistent quality throughout.

Strategy-First

We don't just make things look good — we make them work. Every decision at U1CORE is rooted in business strategy, user psychology, and real market context. We ask the hard questions before opening Figma.

Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

Learn More
Verified Client Reviews
31
Overall Review Rating
5
Source
Clutch
Last Updated
June 13, 2026

Business Entity

Business Entity Name UN1CORN Bureau OÜ
Source Estonia e-Business Register
Jurisdiction of Formation Estonia
Date of Formation April 16, 2025
Status Active
Last Updated August 3, 2025
ID 17222302

Credit Report Results

International Credit Risk Assessment Not Rated
Source Creditsafe
Last Updated August 9, 2025

*Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

Learn More About The Clutch Verification Process

Locations (1)

Paseo de la Castellana 77 MadridSpain 28046

1

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