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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 and good value for cost, with project costs around $10,000 to $25,000. Clients appreciate their budget fit, timely delivery, and proactive communication, indicating strong overall value for diverse project scopes.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 68 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

  • Strong Project Management and Communication

    Clients consistently praised U1CORE for their structured and proactive project management. They met deadlines, adapted to feedback, and maintained transparent communication, ensuring smooth project execution.

  • Proactive and Strategic Approach

    U1CORE's proactive approach in suggesting strategic solutions and improvements beyond the initial scope was valued by clients. Their ability to anticipate needs and address challenges was seen as a major asset.

  • Areas for Improvement Noted

    While generally positive, some feedback suggested areas for improvement, such as providing more structured guidance on long-term UX evolution and enhancing timeline management to prevent delays.

  • Positive Impact on User Engagement

    U1CORE's work led to significant improvements in user engagement metrics such as increased session durations, reduced bounce rates, and higher conversion rates, demonstrating the effectiveness of their design strategies.

  • Valuable Partner in Strategic Growth

    U1CORE was seen as a true partner in driving business growth, offering insights and solutions that aligned with strategic objectives. Their role extended beyond service provider to a collaborative partner.

  • Expertise in Multilateral Marketplaces

    U1CORE demonstrated extensive experience in multilateral marketplaces, allowing for informed product decisions and saving significant time during project execution. Their understanding of two-sided relationships was particularly impressive to clients in this sector.

U1CORE - UI/UX and Dev Partner Reviews

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UI/UX Design Services for Design Company

  • UX/UI Design
  • $10,000 to $49,999
  • Apr. - Aug. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out most about U1CORE was their ability to merge aesthetic sensitivity with functional precision."

Oct 6, 2025
CEO, Design Company
Anonymous
  • Other industries
  • Copenhagen, Denmark
  • 51-200 Employees
  • Online Review

U1CORE was hired by a design company to enhance their digital presence through microinteractions and motion design. The team created an animated interface prototype and a motion design system for the client.

UX/UI Redesign for Rewards & Cashback Platform

  • UX/UI Design
  • $10,000 to $49,999
  • Apr. - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What impressed us most about U1CORE was their ability to balance creativity with usability."

Oct 3, 2025
CEO, Rewards & Cashback Platform
Anonymous
  • Advertising & marketing
  • Montreal, Quebec
  • 1-10 Employees
  • Online Review

U1CORE redesigned the UI of a rewards and cashback platform's website and app. The team created wireframes and prototypes, built a responsive design, and developed a scalable style guide for future updates.

UX/UI Redesign for B2B Tech Company

  • UX/UI Design
  • $10,000 to $49,999
  • Mar. - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What impressed us most about U1CORE was their ability to deeply understand our users."

Oct 2, 2025
CEO, Spikr
Paul Rees
  • Advertising & marketing
  • Poole, England
  • 11-50 Employees
  • Online Review

U1CORE redesigned a B2B tech company's platform UX/UI. The team conducted research, created wireframes and prototypes, designed UI kits, improved navigation flows, and performed user testing.

UX/UI Design Services for IT Company

  • UX/UI Design
  • UX Strategy
  • $10,000 to $49,999
  • Apr. - July 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out to us was how U1CORE approached the work as a true partnership."

Oct 2, 2025
COO, DevIT Group
Alexey Cherevuta
  • Other industries
  • Ukraine
  • 51-200 Employees
  • Online Review

U1CORE provided UX/UI design services for an IT company. The team was responsible for creating the client's project's UI/UX design, allowing the client's team to handle development and implementation.

Web & Mobile App Dev & Design for Marketing Company

  • Mobile App Development UX/UI Design Web Development
  • $10,000 to $49,999
  • Apr. - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out most about U1CORE was their ability to seamlessly blend creative design with technical expertise."

Oct 2, 2025
CEO & Founder, Marketing Company
Anonymous
  • Advertising & marketing
  • Hertford, England
  • 11-50 Employees
  • Online Review

U1CORE was hired to develop scalable web and mobile applications for a marketing company. The team created various types of apps, including customer engagement platforms, loyalty systems, and booking services.

Web Redesign for Strategic Consultancy

  • UX/UI Design Web Design
  • $10,000 to $49,999
  • Mar. - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out most about U1CORE was their ability to blend creativity with a data-driven approach."

Oct 2, 2025
CEO & Founder, Strategic Consultancy
Anonymous
  • Advertising & marketing
  • London, England
  • 11-50 Employees
  • Online Review

U1CORE redesigned a website for a strategic consultancy. The team conducted in-depth research into the client's audience and competition to create a design strategy that emphasized clarity and conversion.

UI/UX Design for Home Essentials Company

  • UX/UI Design
  • $10,000 to $49,999
  • Apr. - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their professionalism and responsiveness created a partnership where our needs were not only met but anticipated."

Oct 1, 2025
CEO, Home Essentials Company
Anonymous
  • Other industries
  • Boucherville, Quebec
  • 51-200 Employees
  • Online Review

U1CORE redesigned a home essentials firm's e-commerce site and digital product catalog. They restructured the navigation flows, reimagined the visual interface, and implemented reusable UI components.

DeFi Platform Development for Financial Services Company

  • Blockchain Custom Software Development
  • $10,000 to $49,999
  • Feb. 2024 - Aug. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They did very impressive work."

Sep 19, 2025
CEO, Holdun
Brendan Holt Dunn
  • Financial services
  • Bahamas
  • 11-50 Employees
  • Online Review

U1CORE designed and developed a DeFi platform for a financial services company. The team built the platform's architecture, UI, and smart contracts and then worked on cross-chain applications.

App, Website & Logo Design for Lead Generation Co

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

"Everything was super cool."

Sep 19, 2025
Founder & CEO, Startupr
Kirill Onasenko
Verified
  • Advertising & marketing
  • California, United States
  • 11-50 Employees
  • Online Review
  • Verified

U1CORE designed the landing page and app of a lead generation company. The team created custom layouts, branding, and logo design, and worked on the login, feed, content, profile, and chat pages.

Product Design for Health Benefits Platform

  • Product Design UX/UI Design
  • $10,000 to $49,999
  • Mar. - Aug. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their team combined technical expertise with empathy."

Sep 17, 2025
Founder & CEO, Vitable Health
Joseph Kitonga
  • Other industries
  • Philadelphia, Pennsylvania
  • 51-200 Employees
  • Online Review

U1CORE provided product design support for a health benefits platform. They assessed the client's web and mobile platforms, identified pain points, redesigned the UX, and created visually engaging interfaces.

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.

Premier Verified means Clutch independently confirmed U1CORE - UI/UX and Dev Partner is a legally registered business,
has had its financial risk status checked (Creditsafe: Moderate Risk), and is backed by 33 verified client reviews averaging 5.0 stars.

Learn More
Verified Client Reviews
33
Overall Review Rating
5
Source
Clutch
Last Updated
September 3, 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 6, 2026
ID 17222302

Credit Report Results

International Credit Risk Assessment Moderate Risk
Source Creditsafe
Last Updated August 6, 2026
Learn More About The Clutch Verification Process

Locations (1)

Paseo de la Castellana 77 MadridSpain 28046

1

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