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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 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

  • Successful Brand and Visual Identity Development

    U1CORE excelled in developing brand and visual identities, creating cohesive and modern design systems that effectively communicated clients' brand values and market positioning.

  • 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.

  • 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.

  • 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.

  • 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.

U1CORE - UI/UX and Dev Partner Reviews

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Industry
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Website Design & Dev Services for Web & Mobile Dev Company

  • UX/UI Design Web Design Web Development
  • UX Strategy
  • $10,000 to $49,999
  • Aug. - Oct. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were particularly impressed by their meticulous attention to detail and unwavering commitment to quality."

Dec 11, 2024
Co-Founder, Software Company
Oleksandr Harahan
Verified
  • Other industries
  • Ukraine
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE developed a website for a web and mobile development company. The team designed a user-friendly interface and implemented additional design features t improve the overall UX.

SaaS Website Dev for Internet Marketing Agency

  • Custom Software Development UX/UI Design Web Development
  • Confidential
  • June - Oct. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"U1CORE impressed with their ability to deliver a visually appealing and highly functional website."

Dec 11, 2024
Marketing Assistant, Elit-Web
Catherine Ilaschuk
Verified
  • Advertising & marketing
  • West - USA
  • 51-200 Employees
  • Online Review
  • Verified

U1CORE developed a SaaS website for an internet marketing agency. The team transformed the client's vision into a functional website and ensured it aligned with the client's marketing strategy.

UI/UX Gaming Components Design for Pet Products Co

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

"The results U1CORE delivered were nothing short of exceptional."

Dec 7, 2024
Founder, PetPeople
Michael Elkind
Verified
  • Retail
  • Worthington, Ohio
  • 51-200 Employees
  • Online Review
  • Verified

U1CORE provides UI/UX design services for a pet products company's gaming intelligence platform. The team has been responsible for the project's brainstorming, UI/UX components design, and weekly reviews.

Hardware Dev & UX/UI Design for Car Wash Company

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

"U1CORE delivered high-quality, market-ready hardware solutions with comprehensive support at every stage."

Dec 6, 2024
Founder, El Car Wash
Geoffrey karas
Verified
  • Retail
  • Miami, Florida
  • 201-500 Employees
  • Online Review
  • Verified

U1CORE provides UX/UI design services for a car wash company. The team also develops hardware, including electronics, mechanics, and firmware, using embedded systems, C, and C++ and provided design concepts.

Brand Design Services for Video Editing Company

  • Branding Product Design UX/UI Design
  • Prototype Design
  • Less than $10,000
  • September 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were impressed with their exceptional blend of creativity and technical expertise."

Oct 14, 2024
CEO, ClipSwift
Bohdan Lyshchenko
Verified
  • Media
  • Ukraine
  • 11-50 Employees
  • Online Review
  • Verified

U1Core provided brand design services for a video editing company. The team overhauled the client's brand identity, created several visual assets, and developed a comprehensive design system.

Web Design & Development for Medical Transportation Co

  • UX/UI Design Web Development
  • $50,000 to $199,999
  • Mar. 2026 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“U1CORE - UI/UX and Dev Partner’s communication and work ethic are great.”

Jun 13, 2026
Chief of Staff, carcompany.ai
Elizabeth Jepsen
Verified
  • Supply Chain, Logistics, and Transport
  • New York, United States
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE - UI/UX and Dev Partner has designed and developed a medical transportation company's first website. The team is currently working on the second and third versions of the site.

UI/UX Design for Fitness Company

  • API Development Branding UX/UI Design
  • UX Strategy
  • Confidential
  • March 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They demonstrated a strong combination of strategic thinking and high-level design execution."

Apr 8, 2026
CEO, Fitness Company
Juan Rouillon
  • Fitness
  • Argentina
  • 1-10 Employees
  • Online Review

U1CORE provided UI/UX design services for a fitness company. The team created the product's information architecture, user journey map, wireframes, UI concepts, and UX documentation.

UI/UX Design for Pet Food Delivery Company

  • UX/UI Design
  • $50,000 to $199,999
  • Apr. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They combined strategic thinking with strong design execution."

Mar 25, 2026
Founder & CEO, Pawy.ch
Alexandre Lang-Willar
  • Manufacturing
  • Switzerland
  • 1-10 Employees
  • Online Review

U1CORE provides UI/UX design services for a pet food delivery company. The team has redesigned the client's platform, including product and subscription pages, a meal selection process, and a user dashboard.

UX/UI Design for Truck Trading Platform

  • UX/UI Design
  • $50,000 to $199,999
  • Jan. 2024 - Jan. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What impressed us most was how well they captured the nature of our business."

Mar 25, 2026
Executive Director, Truck Trades Australia
Helen Pomlett
  • Manufacturing
  • Sydney, Australia
  • 1-10 Employees
  • Online Review

U1CORE provided UX/UI design services for a truck trading platform. The team redesigned the core flows for both sellers and buyers, created UI screens, mobile-responsive layouts, and interactive prototypes.

UX/UI Design for 3D Modeling & Digital Objects Co

  • UX/UI Design
  • $50,000 to $199,999
  • Apr. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What we find most impressive is their ability to design for something that doesn’t yet fully exist in the mainstream."

Mar 25, 2026
Technical Founder, NAK3D
Kelly Vero
  • Information technology
  • Aarau, Switzerland
  • 1-10 Employees
  • Online Review

U1CORE provides UX/UI design services for a 3D modeling and digital objects company. The team has redesigned user journeys, created high-fidelity interface designs, and built interactive prototypes.

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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