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B2B Full-Cycle Product Development Bureau for SaaS

YOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS

$720M moved through one platform we built. Millions of live listings on another. 300+ products shipped.

🔔 Book a free call: https://calendly.com/hello-u1core/30min

🌐 https://www.u1core.com/

What you get

We do: the full platform. Multi-role flows, payments, trust & safety, admin tooling, infrastructure that holds at peak load.

You get: a product decision-makers trust on first impression, and users who move through it without friction.

  • 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%
Certified in:
UX/UI Design Web Design UX Strategy User Research

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 projects typically ranging from $7,000 to $25,000. Clients appreciate the value for cost, highlighting effective communication, timely delivery, and high-quality outcomes, making them a reliable choice for UI/UX and development needs.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 64 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 Project Management

    Clients highlight U1CORE's effective project management, with well-organized processes and clear milestones. Their structured approach ensures that projects are completed efficiently and transparently.

  • High Client Retention and Repeat Engagements

    U1CORE's ability to build strong, lasting relationships with clients is evident in their high rate of repeat engagements and long-term partnerships. Clients often return for additional projects due to their positive experiences.

  • Deep Understanding of Client Needs

    U1CORE excels at understanding and aligning with client business goals and user needs. Their designs are not only visually appealing but also strategically aligned with client objectives.

  • Efficient and Professional Workflow

    U1CORE maintains an efficient and professional workflow, ensuring that all client interactions are smooth and productive. This approach has contributed to successful project outcomes and client satisfaction.

  • Timely Project Deliveries

    U1CORE consistently delivered projects on time, with clients praising their adherence to timelines and structured project management. This reliability in meeting deadlines has been a common theme across various reviews, highlighting their efficient workflow and communication practices.

  • Areas for Improvement in Process Transparency

    While overall feedback is positive, some clients suggested that U1CORE could provide more visibility into internal design iterations to ensure alignment throughout the creative process.

U1CORE - UI/UX and Dev Partner Reviews

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Services
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Industry
Location

Web Dev for Digital Signal Company

  • Web Design Web Development
  • $200,000 to $999,999
  • November 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The quality of work was excellent, and they delivered exactly what I asked for."

Dec 17, 2024
Co-Founder, QuantumSDR
Robin Colclough
  • Manufacturing
  • Tucson, Arizona
  • 201-500 Employees
  • Online Review

U1CORE developed a website for a digital signal company. The 10-page user-friendly site promotes the nuclear industry while following specific brand guidelines.

UI/UX Design Services for Automotive Dealership Group

  • UX/UI Design
  • $200,000 to $999,999
  • Nov. - Dec. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What really stood out to us was the exceptional quality of U1CORE's work."

Dec 11, 2024
Founder, Envision Motors
Simon Sarriedine
  • Manufacturing
  • West Covina, California
  • 51-200 Employees
  • Online Review

U1CORE provided UI/UX design services for an automotive dealership group. The team conducted persona research and user feedback analysis, creating user personas and designs using Figma for the client's product.

UX/UI Design for Retail Co

  • UX/UI Design Web Design
  • $200,000 to $999,999
  • Nov. - Dec. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We have been extremely pleased with U1CORE's work and collaboration."

Dec 8, 2024
Founder, Shopbop
Howard Litwack
  • Retail
  • Bellmore, New York
  • 501-1,000 Employees
  • Online Review

U1CORE redesigned a platform's UX/UI for a retail company. The team conducted persona research and developed use cases using Figma as their design tool.

Hardware Dev & Manufacture for Travel Trailer Co

  • Manufacturing Consulting UX/UI Design
  • Hardware Design & Development Hardware C++
  • $50,000 to $199,999
  • Dec. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their ability to take ideas from concept to production stands out."

Dec 7, 2024
CEO, Airstream
Bob Wheelers
  • Manufacturing
  • Jackson Center, Ohio
  • 201-500 Employees
  • Online Review

U1CORE provides hardware development services for a travel trailer company. The team has developed hardware electronics, mechanics, and firmware, provided design concepts, and manufactured the products.

Web Design for Travel Technology Company

  • Web Design
  • $50,000 to $199,999
  • Nov. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"U1CORE excelled at project management."

Nov 18, 2024
Founder, transferz
Johan van Vulpen
  • Information technology
  • Amsterdam, Netherlands
  • 51-200 Employees
  • Online Review

A travel technology company hired U1CORE to rebuild their desktop and mobile app. The team has used Figma and InVision to create the product based on the client's feature requests and use cases.

Custom Software Dev for Manufacturing Co

  • Custom Software Development UX/UI Design
  • $50,000 to $199,999
  • Oct. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Although it started slowly, I was impressed by the detail and polish in all aspects."

Nov 18, 2024
Legal Director, Kropman
Gorazd Grebenjek
Verified
  • Manufacturing
  • Nijmegen, Netherlands
  • 501-1,000 Employees
  • Online Review
  • Verified

U1CORE has designed a prototype for an AI tool for a manufacturing company. The team has handled outlining and executing a style guide for the client's platform.

UX/UI Design for Hotel & Casino

  • Product Design UX/UI Design
  • $200,000 to $999,999
  • Oct. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They adjust the budget and save us money faster than expected."

Nov 15, 2024
GM, Wrest Point
Andrew Fox
  • Hospitality & leisure
  • Hobart, Australia
  • 51-200 Employees
  • Online Review

U1CORE provides UI/UX design services for a casino and hotel. The team is responsible for designing packages tailored to the client's development capabilities and mock-ups for the website.

Prototype Dev & UX/UI Design for SaaS Web3 Crypto Platform

  • Graphic Design UX/UI Design Web Design
  • Decentralized Finance NodeJS Web3 React
  • $50,000 to $199,999
  • Dec. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"U1CORE is the best contractor that I have worked with."

Oct 31, 2024
CEO & Co-Founder, CryptoForMasses
Alex Skyba
Verified
  • Information technology
  • Ukraine
  • 1-10 Employees
  • Online Review
  • Verified

U1CORE has developed a clickable prototype for a SaaS web3 crypto platform. The team has conducted competitor research, created wireframes, designed the UX/UI, and provided graphic design services.

Product Design for Construction Solutions Company

  • Product Design
  • $10,000 to $49,999
  • Oct. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their project management was spot on."

Oct 14, 2024
CEO, Tricor LLC
Craig Lonsdale
  • Other industries
  • Scottsdale, Arizona
  • 51-200 Employees
  • Online Review

U1Core provided product design services for a construction solutions company's SaaS platform. The team improved the platform's navigation, cleaned up the UI, and created a design based on the client's needs.

UX/UI Design for Advertising & Marketing Company

  • UX/UI Design
  • Less than $10,000
  • Jan. - June 2024
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0
"Our edits were also implemented on time."
Sep 30, 2024
CEO, Advertising & Marketing Company
Anonymous
  • Advertising & marketing
  • Kyiv, Ukraine
  • 11-50 Employees
  • Online Review

Oliinykk Design provided UI/UX design services for an advertising and marketing company. The team was responsible for the entire design of the client's website.

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
32
Overall Review Rating
5
Source
Clutch
Last Updated
June 29, 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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