Overview

About Leobit

Leobit is a full-cycle .NET, AI, web, and mobile application development provider for technology companies and startups primarily in the US, EU, and the UK. We have representative offices in Austin, TX (USA), Tallinn (Estonia), Kraków (Poland), London (UK) and the development center in Lviv (Ukraine) with 170+ talented software engineers, architects, QA experts, and UI/UX designers.

Our Achievements:

  • Microsoft Solutions Partner - Digital & App Innovation
  • ISO 9001:2015 and ISO 27001:2022 Certified
  • ISTQB Platinum Partner
  • Top .NET Developers in Ukraine 2025 by Clutch
  • Customer Service Department of the Year in 2025 by Stevie® Awards
  • The Netty Award Winner for Best Health and Fitness App
  • The Web Excellence Award Winner
  • #1 IT Employer in Lviv, Ukraine by DOU

Leobit has successfully delivered over 150 well-designed and well-factored web and mobile applications to technology companies, ranging from Fortune 500 firms to Silicon Valley startups.

Our Services:

  • Custom software development
  • .NET software development
  • AI/LLM software development
  • Dedicated development team
  • Web application development
  • Mobile application development
  • Software architecture
  • UI/UX design
  • Business analysis
  • Project management
  • Quality Assurance
  • Application support and maintenance
  • Technology consulting

Our Key Technologies:

  • Microsoft Stack: .NET Core, ASP.NET, C#, Azure, WCF, Entity Framework
  • Web/Frontend: React, Angular, Vue, jQuery, TypeScript
  • Backend: .NET Core/C#, Ruby, Node, PHP, Python
  • Mobile Technology Stack: iOS, Android, Flutter, Swift, Kotlin
  • AI Technologies: Generative AI, Predictive Analytics, Deep Learning, Chatbot Development.


Why Leobit?
1. Get the best people on board. Our team consists of seasoned architects and the top 10% of the smartest and brightest graduates of the best universities.

2. Join our thriving clients. Multiple successful startup launches with 10 m+ investments each, several becoming unicorns.

3. Work with mature and secure processes. We help technology companies on their journey of innovation and business transformation, building business partnerships based on trust, transparency, and long-term cooperation.

Looking for a custom software development partner?
Accomplish your business goals with Leobit.

What clients say

Review Analytics of Leobit

Every review is verified through Goodfirms before it's published.

5.026 Verified Reviews
Quality5.0
Schedule & Timing5.0
Communication5.0
Overall5.0
Review Summary
Summarized from 26 verified reviews · Updated August 2026
Clients report that Leobit delivers high-quality software development with strong technical expertise and nearly bug-free work. The team communicates clearly and transparently, listens to client needs, and consistently meets deadlines while staying within budget. Clients appreciate their flexibility in adapting to changing requirements, proactive problem-solving, and willingness to provide candid technical advice even when pushing back on risky decisions.
✦ AI-generated summary. May not reflect every review.
Detailed Reviews of Leobit
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What reviewers mention most

Michael Gerety, VP of App Development at American Financial Resources, Inc.Verified Review
Posted on Aug 17, 2026

“Flexible and scalable development support with reliable delivery”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Web DevelopmentSoftware DevelopmentTesting Services

We engaged Leobit for application development and testing, including on-site web application development for a client-facing application and a legacy loan system. The team has consistently delivered high-quality products with swift implementation. Their timely deliverables and communication through virtual meetings have helped keep the engagement running smoothly. Leobit has also demonstrated a strong willingness to provide flexible coverage and scale the team according to our requirements. Their ability to adapt to the changing needs of the project has consistently exceeded our expectations.

Michael Catterall, Chief Digital Officer at Tipco Technologies LLCVerified Review
Posted on Aug 17, 2026

“High-quality resources with strong engagement and business understanding”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software DevelopmentIT ServicesArtificial Intelligence

We engaged Leobit for AI development and application support, including the development of an AI-based assembly configurator and ongoing Salesforce and MuleSoft support. Their work has been delivered on time and within budget. The team has remained highly engaged and effective, maintaining constant communication throughout the project. Leobit has also taken the time to understand our business and provides thoughtful solutions aimed at helping us build the best possible product. Their ability to bring high-quality resources to our projects has been a major strength.

Victoria Lukinova, Product Lead at The School of LifeVerified Review
Posted on Aug 14, 2026

“A collaborative team that feels like an extension of our own”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentApp Designing (UI/UX)Artificial Intelligence

We engaged Leobit to provide ongoing design and development support for our content subscription platform. The team builds new features, optimizes platform performance, improves UX/UI, and supports our native iOS and Android applications. They have improved the platform's performance and developed new capabilities, including an AI-powered assistant. Throughout the engagement, Leobit has been responsive, accountable, and highly collaborative. They take full ownership of their work and communicate openly and flexibly. What stands out most is that they never feel like an external vendor; they feel like an extension of our own team.

AnonymousVerified Review
Posted on Aug 14, 2026

“Flexible development team that adapted quickly to our needs”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software DevelopmentApp Designing (UI/UX)Cloud Computing Services

We engaged Leobit to provide software development services for our SportsTech platform, including hardware integration, UI/UX design, cloud infrastructure, data management and analysis, and testing. Their work helped us significantly increase user engagement, revenue, and our user base. We also improved the quality of user performance data and received positive feedback from end users. Leobit was highly flexible throughout the engagement and followed the Scrum methodology effectively. They were able to quickly onboard new developers when needed and consistently delivered tasks on time.

Liene Hogganvik, Senior Software Project Manager at Fell TechVerified Review
Posted on Aug 14, 2026

“Responsive communication and an optimized development approach”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentCloud Computing Services

We engaged Leobit to build and develop a new mobile platform embedded with cloud-based solutions using Flutter. Although the mobile app had not yet launched at the time of the review, we were highly satisfied with Leobit's optimized approach throughout the partnership. The team was responsive, delivered accurate work, and maintained an effective working process. Communication with the project manager was easy and accessible, which helped keep the collaboration smooth and ensured our requirements were addressed effectively.

Marius Buragas, Development Director at Asprey Management SolutionsVerified Review
Posted on Aug 14, 2026

“Technical expertise with reliable project delivery”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Web DevelopmentSoftware Development

We engaged Leobit to support our migration from IdentityServer to OpenIddict and configure multi-factor authentication. The team successfully delivered a stable and secure authentication platform that met all our expectations. Leobit demonstrated strong technical expertise and effective project management throughout the engagement. They kept deliverables on schedule while remaining responsive to our changing requirements. The quality of the work delivered by the team met our expectations, and their ability to manage the project efficiently made the overall collaboration successful.

Eric Schuler, President & Founder at Twin Oaks Software Development, Inc.Verified Review
Posted on Aug 14, 2026

“Meticulous attention to detail and responsive collaboration”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software DevelopmentMaintenance & Support

We engaged Leobit for software development and maintenance, including updates and fixes to our gym software and the development of an add-on fintech application that could also operate as a standalone solution. Leobit delivered the fintech application's MVP on time with all the required functionality, including frictionless account verification and secure data handling. What truly set the team apart was their meticulous attention to detail. They also fostered a collaborative working environment, responded promptly to our needs, and addressed concerns quickly throughout the project.

Andriy Zhuk, VP Engineering at Inventify AGVerified Review
Posted on Jul 28, 2026

“Leobit strengthened our engineering team with high-quality development expertise and a genuine commitment to delivering reliable, well-crafted solutions.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Web DevelopmentSoftware Development

We partnered with Leobit to expand our internal engineering capacity and support the ongoing development of our Platform-as-a-Service solution. Their team worked alongside our developers, contributing to custom software development while helping us streamline integrations across multiple systems within our platform. Leobit's contributions resulted in more efficient system integrations that simplified user operations and improved data management across the platform. They quickly took ownership of complex technical tasks and consistently delivered solutions that met our quality expectations. Throughout the engagement, the team demonstrated excellent technical knowledge, professionalism, and attention to detail. Communication was smooth, collaboration felt seamless, and they approached every challenge with a strong commitment to finding the best possible solution. Their passion for delivering high-quality technology solutions and their focus on getting every detail right made them a valuable extension of our engineering team.

AnonymousVerified Review
Posted on Jul 28, 2026

“Leobit delivered a thorough modernization assessment with outstanding technical expertise, clear communication, and exceptional quality.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software DevelopmentIT Services

We engaged Leobit to perform an independent technical assessment as part of a web application modernization project. Their role was to review the work completed by another development vendor, evaluate the existing technical implementation, and provide an objective assessment along with recommendations to support our modernization efforts. The team delivered a comprehensive modernization assessment report on time and within budget. Their findings were detailed, practical, and gave us valuable insights that helped us better understand the current state of the application and the best path forward. Throughout the engagement, Leobit demonstrated excellent communication and a deep understanding of modern .NET technologies. Their technical expertise and professional approach gave us confidence in the recommendations they provided, and the overall quality of their work exceeded our expectations.

Jakub Aftyka, Product Manager at TrichoLABVerified Review
Posted on Jul 28, 2026

“Leobit has been a proactive and dependable development partner, delivering a high-quality trichoscopy app while continuously improving the product throughout the engagement.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentApp Designing (UI/UX)Artificial Intelligence

We partnered with Leobit to develop a trichoscopy application for both iOS and Android that would support healthcare professionals with an efficient, secure, and user-friendly solution. Their team handled the complete development process, including UI/UX design, high-resolution image capture, secure data transfer, multilingual functionality, and AI-powered features tailored to our product requirements. The application has been successfully launched on both the App Store and Google Play, and the results have been very encouraging. The solution has helped improve processing times by approximately 70%, while ongoing refinements based on user feedback have further enhanced the application's performance, workflow, and overall user experience. Throughout the engagement, Leobit has demonstrated excellent project management and communication. They consistently delivered milestones on time, responded quickly to questions and requests, and kept us informed throughout every phase of development. What truly distinguishes them is their proactive approach—they regularly suggest valuable improvements, anticipate potential challenges before they arise, and contribute ideas that strengthen the final product rather than simply executing requirements. Overall, Leobit has proven to be a knowledgeable, collaborative, and reliable technology partner, and we are very pleased with the progress and quality of the application.

Abdul Rehman Seo
Abdul Rehman Seo, Link Builder at backlinkcraftersVerified Review
Posted on Oct 1, 2025

“I'm outreach link builder with 3 year experince.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentWeb Development

I'm Abdul Rehman, I'm an Outreach Link-Builder, You can Get Guest Posting/Niche Edit Service From us. We have sites with High SEO Metrics. Permanent & Do-Follow Backlinks. We aim to promote your business that will increase your sales around the world and also help to increase your website rank on google search page . If you are interested in Guest Posting/Niche Edit please give us a chance.... Thanks...

Cameron C., Director of Product at SportsTech CompanyVerified Review
Posted on Dec 5, 2023

“Leobit is a huge reason for my success with my business.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Having a team of experienced software developers has been just absolutely essential to the success of our projects. I’ve been working with Leobit for the past three years, and I can’t imagine doing it any other way. I can always rely on them to get the job done, and I always know that I’m going to get quality work.

Jean-Philippe Golay, CIO at QVAuctor - ebiexpertsVerified Review
Posted on Dec 5, 2023

“We had a positive experience and would hire Leobit again.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Communicative and skilled, Leobit delivered solid results. Although the team’s pricing was fair, financial constraints reverted the partnership to in-house development. Throughout the project, the team was committed to success. Their suggestions enhanced our product.

Christian H., CTO at IT Service CompanyVerified Review
Posted on Dec 5, 2023

“I don't think there is much that can be optimized here.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Leobit delivered the best results we could have asked for. They came up with meaningful and well-thought-out solutions that would otherwise require other agencies. They were also very constructive and led a smooth workflow.

Liene H., Senior Project Manager for Software development departmentVerified Review
Posted on Dec 5, 2023

“Communication with the Leobit's project manager was very easy and accessible.”

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
IoT Development

The mobile app delivered by Leobit has yet to launch, but we were highly satisfied with the vendor's optimized approach throughout our partnership. The internal stakeholders were particularly impressed with the team's responsiveness and accurate deliverables.

Focus

Service Focus of Leobit

How the team's effort is distributed across services.

45%25%10%10%5%5%

Industries Focus

20%20%15%10%10%5%5%

Client Focus

Small Business60%
Medium Business30%
Large Business10%

The Positioning

AI Tools & Purpose

The stack the team uses to move faster.

Claude
AI-assisted software development
Selected Work

Client Portfolio of Leobit

Where their work concentrates - by industry, budget, and timeline.

Project Industry

Healthcare8%
Travel2%
Manufacturing2%
Media8%
eCommerce6%
Advertising & Marketing2%
Business Services6%
Hospitality4%
Entertainment2%
Other Industries18%
Legal & Compliance4%
Real Estate12%
Other4%
Social2%
Fintech12%
Insurance4%
Gaming2%
Productivity2%
Major industry focus
Other Industries

Project Cost

Not Disclosed84%
$50001 to $1000008%
$100001 to $5000004%
$10001 to $500004%
Common project cost
Not Disclosed

Project Timeline

Not Disclosed12%
Ongoing24%
1 to 25 Weeks10%
26 to 50 Weeks6%
51 to 100 Weeks46%
100+ Weeks2%
Typical timeline
51 to 100 Weeks

Clients: 7

AntourageArcanebetRealized TechnologiesHollarSportif ASAdracareFlashParking

Portfolios: 50

Executive Interview

Executive Interview of Leobit

Oleksa Stelmakh
Oleksa Stelmakh
CEO
Visit Profile

Kindly share your feedback on how Goodfirms has been doing so far in increasing your visibility among potential clients.

Goodfirms did a great job to become a trustworthy directory for both parties - IT outsourcing providers and those who are in search of a reliable vendor. We are honored that Goodfirms values Leobit as one of the top vendors represented in their directory and recognized our company as a Top App developer.

Please introduce your company and give a brief about your role within the company?

I’m the CEO and founder of Leobit, a full-cycle web and mobile application development provider. We’ve been serving technology companies and startups from the US, the EU, and the UK for about 6 years already. Our development center is based in Lviv, Ukraine, and we also have representative offices in Austin, TX, and Tallinn, Estonia.

We offer our clients both long-term and short-term engagement options for team extension, outstaffing, or outsourcing services.

As a proof of excellence in delivering software product development services, Leobit was recognized as one of the top .NET companies in Ukraine by Clutch, and was listed among top 10 Mobile Application consulting/services companies in 2020 by CIO Advisor. Our company is a Microsoft Gold Certified Partner with a competency in application development.

I’m also proud that for over three years in a row we’ve retained the position of the best IT employer in Lviv, Ukraine. This recognition is based on our employees’ reviews on DOU.ua. We believe this is a natural result of our strong company culture and the values we live by:  Smart, Flexible, Open, Efficient, and Caring.

What was the idea behind starting this organization?

The idea to build a software development company was born out of my previous extensive 15-years experience within the IT outsourcing industry. I noticed that large organizations that use outsourcing services often don’t recognize the offshore firms as an extension of their operations and weren’t eager to build a partnership with software development vendors.

Therefore, I decided to build a company that can make the overall experience of IT outsourcing better and more transparent, as a way to build strong relationships with clients through the values of dedication and trust.

In addition, I noticed that tech companies, especially mobile application startups, are frequently overly focused on the technology side. However, such important aspects as the end-clients’ needs and experience, analysis of the customer business, and plans for software product’s further scaling & growth were sometimes overlooked.

Here at Leobit, we strive to consider every angle and explore every client’s business to identify the right model, the right processes, and the right people that can bring the most value specifically for this customer.

What is your company’s business model–in house team or third party vendors/ outsourcing?

We are an in-house team. Our development center is located in Lviv, Ukraine, and counts more than 120 strong software engineers, architects, testers, and UI/UX designers.

How is your business model beneficial from a value addition perspective to the clients compared to other companies' models?

We are a versatile software development service provider that serves a wide range of companies with focus on a customer-centric approach. At the very start of the cooperation with a new client, we aim to understand the customer’s needs, assess the constraints, requirements, and possible growth directions (the “discovery phase”) -- all to develop truly well-tailored products and solutions. Leobit’s architects determine the most suitable architecture for each project.

We are extremely flexible. There are tech people of all seniority levels in our team, which is perfect in terms of accommodating a variety of customer requirements for team size and composition, technology stack, project duration, and staffing time. We can offer our clients both full-cycle development or just a single part of product development.

I think that our internal tech mentorship program also adds value to our clients. Even though it was created to foster the professional growth of our engineers, the clients can be sure that there is an experienced developer of the Tech Lead / Architect level behind every project.

What industries do you generally cater to? Are your customers repetitive?

We’ve successfully delivered over 150 well-designed and well-factored web & mobile applications to various technology companies and startups. The majority of our customers are in real estate, healthcare (especially, fitness and wellness apps) sports, e-commerce, media and video streaming, finance, marketing, and other industries.

We have clients that have stayed with us from the very first days of the company’s existence. And for the projects that are already finished, they recommend us to their friends and industry contacts, so that’s the best proof for me that our customers are satisfied with the services that Leobit provides.

Mention the objectives or the parameters critical in determining the time frame of developing software.

These depend on the business needs of the client/product, e.g. critical business milestones, requirements, events, or campaigns.

Normally, the full software development life cycle at Leobit begins from the discovery phase. At this stage, our developers gather all requirements to understand the client’s business needs. Our seasoned team decides what tech capabilities are suitable for this specific case and sets realistic time frames. In some cases, the time frame can be determined by the technical side, when some tasks/parts cannot be paralleled and one task can be started only after another one is finished.

How much effort in terms of time goes into developing the front end and back end of software?

It really depends on the type of software and business needs of the client. 
For a short-term project with simple, straightforward requirements and all functionality running on a single server, I can assume the back-end and the front-end would demand equal efforts, 50/50.

In the case of a large-scale project, the complexity of the back-end is inevitable. As the number of servers increases, we need to add more tools and processes, i.e. the database, data synchronization, universal API, and so on. As a result, the back-end demands more time and effort. Meanwhile, if the front-end doesn’t need much scaling or adjustments, it requires less time and resources for the development (65% to 35% BE and FE respectively).

However, if you aim to wow the users with an outstanding and complex interface, the front-end could still take up to half of the project resources.

What are the key parameters to be considered before selecting the right framework for developing software?

These parameters might include, but are not limited to:
  • Project requirements and tech fit. At the very beginning, we identify the unique business and technical requirements that might call for a particular language and framework. The choice might be also influenced by the client's current software ecosystem or their preferences. 
  • Development and maintenance costs, including the cost of hiring experienced software developers. It would vary based on the technologies they work with. Also, the client should be aware that even after the product has been successfully released, there will always still be a need for updates, fixes, additional features requested by the end-users, and overall improvements. As the business environment changes and the project evolves, the additional maintenance will become a must: to modify, improve, or enhance a software solution.
  • Time to market. This factor heavily depends on the technology stack the client chose for the project and the team composition. I would advise making sure the preferred tech stack has enough libraries, etc. to add value to the project; can be seamlessly integrated with third-party solutions; and there is a large enough pool of available developers for current and future needs. 
  • Security: it is wise to select a framework that is less prone to vulnerabilities, where you can ensure the required level of data security and compliance, if needed.
Leobit runs R&D programs to evaluate and validate different platforms and tools, respond to market changes, and develop the web and mobile software applications accordingly.

Which languages & frameworks do you prefer to use in development of software?

Our main platform is Microsoft .NET, we consider it to be a universal framework as it allows for creating any web, mobile, and desktop solution with ultimate reliability and scalability. This is why many of our developers are focused on .NET, and are even MCSD: App Builder Microsoft certified. Leobit as a company itself is a Microsoft Gold Certified Partner with a competency in application development.

For web application development, we also advise to use Angular, React or RoR. For native Android platform apps, we recommend Kotlin and Java. For iOS application development (for iPhone, iPad, and other Apple devices), we would suggest Swift and Objective-C.

What are the key factors that you consider before deciding the cost of software?

The main factors are the project duration & team composition based on which we consider different cooperation models - Dedicated Team or T&M (time and material).

For a Dedicated Team cooperation model, we calculate expenses based on the number of FTE (full-time employees) and their seniority level.

The dedicated team model is the most attractive for the customers from the pricing standpoint as it allows the customer to extend their organization by a team of highly-skilled professionals, at the best price / quality ratio.

Budgeting on the Time & Materials basis means that we offer hourly rates. For projects that require licenses and materials outside of the standard list, we also calculate the cost of these additional materials that were used (both software and hardware).

What kind of payment structure do you follow to bill your clients? Is it Pay per Feature, Fixed Cost, Pay per Milestone (could be in phases, months, versions etc.)

Generally, we offer three models of cooperation and the payment method varies respectively: for the dedicated team, it’s a monthly budget; for time and material - monthly retainer; and for fixed price, cost is based on detailed estimates after the Discovery Phase of the project.

Do you take in projects which meet your basic budget requirement? If yes, what is the minimum requirement? If no, on what minimum budget you have worked for?

The minimum project’s budget we usually work with starts from $10K, our hourly rates are $25 - $65.

What is the price range (min and max) of the projects that you catered to in 2019?

In 2019 we worked on a couple of ongoing projects in the price range $50K - $1M, and we completed several smaller projects with the budget up to $50K.

Where we are

Locations (7)

Offices where Leobit operates.

Headquarter
Ukraine

Ukraine

Stryiska Street, 108
Lviv, Lviv 79000
United States

United States

5555 N. Lamar, Suite L-127
Austin, Texas 78751
+1512-399-5386
Estonia

Estonia

Kesklinna linnaosa, Tuukri tn 19-315
Tallinn, Harju 10152
+372-880-1551
United Kingdom

United Kingdom

104 Westbourne Terrace, W2
London, England 6QE
+44 07876338004
United States

United States

5555 N. Lamar | Suite L-127
Austin, Texas 78751
Poland

Poland

Wielicka 28
Krakow, Lesser Poland Voivodeship 30552
Estonia

Estonia

Tuukri tn 19-315
Tallinn, Harju 10120