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

Jason Duncan, Founder and CEO at ManagerCompleteVerified Review
Posted on Dec 5, 2023

“Outsourcing our software development to Leobit was the best decision we ever made. ”

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

Leobit’s high-quality output improved our product, exceeding expectations. They fostered a productive partnership through a communicative and prompt approach. Their ability to understand requirements and complete tasks on time was impressive.

Scott M., Digital Transformation ArchitectVerified Review
Posted on Dec 5, 2023

“What’s remarkable is that they’re always on top of deliverables, timelines, and bug-fixes.”

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

Launching the platform on a tight timeline, Leobit has stayed on and continues to be our valuable technical partner. Their transparency and responsive communication stand out, as does their fast remediation of bugs and committed resources. Clients can expect a partner that dives in from the start.

Miklas P., Founder at MP-UdviklingVerified Review
Posted on Nov 22, 2023

“We had an apparent and straightforward communication path between myself and the developer.”

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

Leobit successfully built the software within the deadlines and budget. The team utilized Trello and Telegram, holding weekly discussions of feedback, tasks, and bug reports. Overall, they were flexible, responsive, organized, and transparent in communicating and managing the project.

Mike Groves, Founder at Papa Bear SoftwareVerified Review
Posted on Jun 2, 2023

“They were wonderful. Their engineers pushed back when there was risky decisions and they were usually right.”

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

We needed affordable high quality engineers quickly to augment our development team. We brought in 5 engineers from leobit to help us deliver a full stack solution for our client. Our goal was to deliver a high quality application that would scale along with the client business. We had heard from two trusted advisors that Leobit had shown promise as an off shore solution. These advisors had also had success with Leobit. At Papa Bear Software we work closely with our clients to understand their vision and their essential needs for each project. We helped them develop their requirements and roadmap, then delivered a large subset of those requirements to our leobit engineers. They were wonderful. Their engineers pushed back when there was risky decisions and they were usually right. When they were wrong, they did they understood and worked as told. We delivered two applications for our client with leobit. Leobit along with Papa Bear Software delivered high quality and fast. They fit well into our company culture and helped accelerate our productivity. We delivered two applications and a scalable cloud architecture with their help.

Trond Ahlsen, Owner & Managing Director at Sportif ASVerified Review
Posted on Jun 2, 2023

“We value that everything is delivered on time and they’re responsive.”

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

Leobit developed our web, iOS and Android apps. We began the process from scratch and their team built it according to our vision. The first part of the project has been completed, and they continue to offer different services and support us. So far, everything has been delivered as expected. The team at Leobit continues to be supportive and productive. They’re communicative and flexible throughout the project.

Andriy Zhuk, VP of Engineering at InventifyVerified Review
Posted on Jun 2, 2023

“Their passion for perfection in delivering tech solutions is quite impressive.”

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

Our platform serves as a unique tool for creating custom software and products without coding. We needed to expand our internal team and streamline the clients’ systems integrations with our platform. We recruited the Leobit team with extensive experience to strengthen our team. We received effective integration with diverse systems, including payment systems, postal, telecommunication, and e-commerce platforms. These integrations streamlined our user's operations and improved data management. The project management strategy was based on the SCRUM framework, including daily stand-ups, sprint retrospectives, and planning meetings. The team provided daily status updates through Jira, including remaining hours to complete sprint tasks. All daily communication processes were carried out in Slack and Google Meets. The team maintained close collaboration with the Product Owner and Business Analyst, following their precise instructions and responding quickly to feedback.

Rodrique Fru, CTO at Payverse Inc.Verified Review
Posted on Apr 25, 2023

“Their flexibility to adjust to project demands in a timely fashion is impressive.”

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

We are happy with Leobit's services. The team manages expectations well, enabling the client to know when deliverables will be available. Moreover, their resources' flexibility is great. They adjust to the project's demands on time and effectively. Overall, the partnership is a success. Expectations were managed so that all were in the know of when deliverables where going to be ready.

Marcus Rush, CEO at RushRealtyVerified Review
Posted on Apr 25, 2023

“They listen to what I really want and provide several suggestions based on my input. ”

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

I wanted to build an in-house system that would help my agents track their production, commissions, and financials through a mobile app. I also wanted to build a company website which incorporates multiple listing service (MLS) integrations with our CRM system. First, they built an iOS and Android app that links to our CRM, which is Follow Up Boss. They also used Monday as the single source of truth (SSOT) for all of the deals. Through that integration, the app can pull information on agent production. This includes how many emails each agent sends, how many deals they close, and how much they earn in commission. Then they began to build our website, integrate our Bright MLS, and link it to our CRM. On top of that, they are setting up our email marketing system. Now clients can find properties they’re interested in through our website.

David Dahill, CFO at RealizedVerified Review
Posted on Apr 25, 2023

“The service is great and the deliverables are nearly bug-free.”

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

Our in-house team designed and architected the web-based portal. Leobit then provided full-stack development services based on our wireframes. The team utilized .NET, JavaScript libraries, SQL databases, and Bootstrap. During the build, the Leobit think through the flow charts to ensure accuracy of data and the optimal site speed.

Tim H., CEO at EZY GamingVerified Review
Posted on Feb 13, 2020

“100% recommending Leobit Team”

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

100% recommending Leobit Team

Johan Junker, CEO at AntourageVerified Review
Posted on Feb 13, 2020

“Live sports video streaming app for Antourage”

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

Live sports video streaming app for Antourage

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