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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.

πŸ”” 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 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

  • 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.

  • Significant Improvements in User Engagement

    U1CORE's work led to significant improvements in user engagement metrics, including increased time on pages, reduced bounce rates, and higher conversion rates, demonstrating their impact on business performance.

  • Expertise in Custom Software Development

    U1CORE is proficient in developing custom web and software applications tailored to specific business needs. Clients appreciated their ability to create personalized solutions that address unique challenges.

  • 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.

  • 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.

  • 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.

U1CORE - UI/UX and Dev Partner Reviews

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Services
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Industry
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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.

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

πŸš€ CEO at U1CORE | Elevating Startups to Market Leadership with Strategic Design πŸ”₯ 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 β€” 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 β€” 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 β€” 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.

Locations (1)

Paseo de la Castellana 77 MadridSpain 28046

1

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