Top 10 UX/UI Design

Companies in Sofia

Sofia is emerging as a leading Eastern European tech hub, excelling in IT outsourcing, software engineering, and blockchain development, supported by a favorable business environment and a growing number of international tech companies establishing operations in the city.

How Did We Pick the Best?

1

What if

SofiaBulgaria

Team Size 10-49
Cost of Services $$$$$ $70-150/h

Service Focus:

UX/UI DesignDigital StrategyAdvertising + See more

Description

What if it is a new generation digital agency, driven by a passion for innovation and advanced technology. they incorporate a unique creative vision with an exceptional visual creation. in their work, they provide a user experience that forges a genuine relationship between customers and brands. Focusing on the results and trying to combine creativity with optimization. We will deepen your business and deliver what you need, not what you want to...
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Team Size 10-49
Cost of Services $$$$$ $70-150/h

Service Focus:

BrandingUX/UI DesignWeb Development + See more

Description

Ralev is a design strategy & digital experience agency.Focus is on Brand Design, Web Design, UX, Web Development.16+ years of online and offline design projects both for StartUps and Corporations.Hundreds of happy clients in Advertising, Agriculture, Consulting, Fashion, Energy, Entertainment, Finance, Gaming Industry, Real Estate, Tourism, Technology & Food.USP: Multidisciplinary know-how, quick TAT, quality.
View profile Contact Ralev.com Digital Design Agency
3

Rubber Duck

SofiaBulgaria

Team Size 10-49
Cost of Services $$$$$ $70-150/h

Service Focus:

Web DevelopmentMobile App DevelopmentWeb Design + See more

Description

Rubber Duck is a strategic digital partner to marketing and advertising agencies and companies developing internal digital products. The entire focus of the team is centered around ensuring a smooth and effective manner of cooperation. Our top-notch software engineers can execute various projects, tailoring the perfect fit. From the innovative challenges of fresh and young start-ups to complex custom solutions for acclaimed global industry leade...
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4

Gobox

SofiaBulgaria

Team Size 2-9
Cost of Services $$$$$ $70-150/h

Service Focus:

PRUX/UI DesignPackaging Design + See more

Description

We are creative problem solvers. Established in Bulgaria, Gobox Advertising is working dynamically everywhere, with everyone. We deliver effectiveness through new marketing thinking and efficiency of resources.  
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5

Presitely

SofiaBulgaria

Team Size 2-9
Cost of Services $$$$$ $70-150/h
2025 Awards Winner
2024 Awards Winner
2023 Awards Winner

Service Focus:

Conversion OptimizationSEOPay Per Click + See more

Description

Presitely is an award-winning full-service digital marketing agency helping businesses worldwide grow through tailored, results-driven strategies. We provide all key digital marketing services in one place - from SEO, Content Marketing, and Web Design & Development to PPC, Social Media, and CRO - ensuring seamless execution and maximum ROI.Recognized as a TechBehemoths Award Winner three years in a row, Google Partner, a Hotjar founding membe...

Our Take

TechBehemoths recommends Presitely as one of the most trustworthy IT service providers. With a strong profile on TechBehemoths, they have 12 years of experience, 1 positive testimonials, and 5 projects successfully completed, ranking in the top 15% of over 50,000 IT companies on our platform.
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6

Platform Services

SofiaBulgaria

Team Size 50-249
Cost of Services $$$$$ $30-70/h

Service Focus:

Custom Software DevelopmentWeb DevelopmentWeb Design + See more

Description

Who we are: Platform Services is an EU based software development company with more than 70 professionals. Our team, formed of specialists in development, software, and system engineering, project management, product development management, design, UI/UX, QA, and DevOps, can provide top-level and full-stack outsourcing development services. What we do: Whether it is an idea, MVP, development, or maintenance, our experienced team can help you with...
View profile Contact Platform Services
Team Size 50-249
Cost of Services $$$$$ $30-70/h
2025 Awards Winner
2024 Awards Winner

Service Focus:

IT Staff AugmentationCustom Software DevelopmentWeb Development + See more

Description

Founded in the year 2017 in Sofia, Bulgaria, DSS started with a single skilled person whose sole idea was to serve as a ServiceNow consultant for one of the biggest Oil & Gas companies in the world.Since that time the company grew not only in numbers, like staff, clients, projects and revenue, but also in state of mind, corporate culture and general value proposition.With its current staff of more than 65 experts, DSS is not only a place with...

Our Take

DSS Digital and Software Solutions Ltd. is a trusted partner for startups and established businesses. Their collaborative team prioritizes client satisfaction. Explore their extensive profile on Techbehemoths.
View profile Contact DSS Digital and Software Solutions Ltd.
8

Ever Technologies

SofiaBulgaria

Team Size 10-49
Cost of Services $$$$$ $30-70/h

Service Focus:

Web DevelopmentCustom Software DevelopmentArtificial Intelligence + See more

Description

Ever Technologies LTD is a growing Europe-based R&D company.We are busy with consulting in software design & architecture, development & testing for our cool international clients on a per-hour basis. We are the top-rated Upwork agency with ALL TOP-RATED employees: https://www.upwork.com/ag/ever.Check out more about us on our website: https://ever.tech.Please also review and star popular Open-Source projects we are working on: https:/...

Our Take

Ever Technologies is one of the local market leaders and stands out for its quality, trust, commitment, and constant growth. These values have helped them to rank among the top IT services providers on Techbehemoths, to deliver successful projects and to get satisfied clients and visibility.
View profile Contact Ever Technologies
9

Right Direction

SofiaBulgaria

Team Size 10-49
Cost of Services Not revealed

Service Focus:

Business ConsultingDigital StrategyBranding + See more

Description

We are experienced in working for different clients and brands. We have built very good relationships with most influential medias, bloggers and personalities in Bulgaria. Storytelling is our secret to connect with influencers, to engage audiences, to develop brands and companies. We believe in the power of integrated marketing communications and we mix different channels to achieve the best results. We create hybrid campaigns in both the digital...

Our Take

Right Direction is listed as one of the most trusted IT service providers on TechBehemoths. Their above average profile score is based on 16 years of experience, a dozen positive testimonials, and a dozen completed projects, placing them in the top 52% of over 50,000 IT companies on our platform.
View profile Contact Right Direction
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Top UX/UI Design Companies in other cities

What is UX/UI Design and what are its benefits for your projects?

Have you ever noticed how some websites and apps just feel easier to use than others? That's because of the UX/UI design - basically, the people who make sure everything looks good and is easy to navigate.

UX/UI design services are closely connected, but they are not the same. They are actually about different parts of the design and to be effective they must work together.

  • UI (user interface) design concentrates on visual elements. It is all about how things look and work on a product, like colors, fonts, and buttons.

  • UX (user experience) refers to the overall experience a person has with a product  – how easy it is to use the product, how it makes the user feel, and whether it is possible to easily get what is needed from it.

According to research conducted by Forrester, a well-designed user interface (UI) can increase a website's conversion rate by 200%, whereas a better user experience (UX) design could raise it by up to 400%.

In this connection, the importance of UX/UI Design cannot be overstated. Nowadays users have high expectations for the products they use, if a product is not easy to use or enjoyable, users will quickly abandon it. 

UX/UI design can help:

  • Enhance user satisfaction

  • Reduce bounce rates

  • Lead to higher customer retention and revenue

UX Design has also an important role in Inclusive Government Design, which makes government services accessible and user-friendly for diverse and marginalized communities.  

But how do choose the right UX/UI Company? 

  1. Review the company's portfolio and make sure they have experience in your industry

  2. Look for companies that understand your target audience to meet their needs.

  3. Inquire about their design process: research, wireframing, prototyping, and testing.

  4. Choose a company that maintains transparent and open communication and keeps you involved throughout the design process.

  5. Read client reviews to check their reputation and client satisfaction.

  6. A good design company should be up-to-date with the latest design trends and technologies.

Taking into consideration all these tips you will manage to select the right UX/UI Design Company that will help to achieve your goals. 

There are over 13,800 UX/UI Design companies on TechBehemoths platform. Check their profiles, their strong portfolios, and previous clients' reviews before you make a decision. With the help of smart filters, you can easily find suitable partners to deliver exceptional digital experiences. Alternatively, you can submit your project, and the system will find the best match on your behalf.

UI/UX design in the AI era

As AI tools evolve and become more capable of prototyping and designing layouts, the human/emotional aspect will become even more important. AI can't experience and tell and illustrate personal stories, while UI/UX designers can. This human/personal touch will become a valuable part of UI/UX work.

You can interact with the web in multiple ways: using text, voice, images, videos, VR, etc. All these require user interfaces adapted to different needs and scenarios. Professional design agencies should be able to deliver interfaces and UX for multiple interaction modes and devices like smartphones, VR headsets, smart glasses, etc.

The importance of UI/UX for your leads/sales

Lots of websites lose their visitors without a single click. Poor UX design is almost always the reason, and most business owners don't even know where the problem is.

On average, websites convert only 2–3% of visitors. This means the majority of visitors land on a site, browse for a few seconds, and leave without taking any action. Business owners express this as one of their most common frustrations.

How to solve this problem?

The answer is simple: make it easy for visitors to take desired actions on your website, such as viewing a product page or service, completing a purchase, or downloading a resource.

Your website should communicate effectively, guide users, and convince them to take a specific action.

Why your website doesn't convert

There might be multiple reasons, but here are the most common ones + some tips on how to improve your UX to convert visits into leads/conversions. 

1. The first seconds count

How to fix? Start with a clear value proposition that shows the benefits and answers these three questions right away.

build a clear value proposition

2. No call to actions (CTAs)

How to fix? Your service/product and other important pages should have one primary CTA, and it should be: specific, prominent, smooth/short. Example: Get a free quote.

effective CTA

3. Poor mobile UI/UX

How to fix? Focus on mobile-first UX design, which means designing the mobile experience first and then adapting it for the desktop experience.

4. No social proof

How to fix? Place trust signals throughout the conversion path: client testimonials, reviews, awards, certifications, team photos, etc.

social proof examples

5. Complex navigation/structure

How to fix? Simplify your navigation and content structure by limiting menu items, using plain language, making contact options visible and accessible from everywhere, using proper visual hierarchy.

6. Slow loading time

How to fix? Optimize your web pages for speed, especially for mobile devices. Use modern image formats like webp, compress images, use reliable/fast hosting, minify JavaScript/CSS, don't usee too many 3rd party services.

7. Too long forms

How to fix? Use the minimum required number of input fields: name, email, and one open field. Don;t overwhelm users withh too many questions and options.

short vs long form