Choose the software outsourcing company of the right size: top 15 vendors

Size matters. At least, when we are talking about IT vendors. Does your potential software outsourcing company have enough people and technical expertise to handle your project? Can they be flexible enough to meet your needs? Will they be able to help you scale up your engineering tea...

Choose the software outsourcing company of the right size: top 15 vendors

Size matters. At least, when we are talking about IT vendors. Does your potential software outsourcing company have enough people and technical expertise to handle your project? Can they be flexible enough to meet your needs? Will they be able to help you scale up your engineering team? In this article, we are going to discuss the benefits and drawbacks of each size category ( small, medium and large one). In addition, we are going to provide you with a list of IT vendors of different sizes you can potentially partner with.


In order to create this list of top software outsourcing companies, we have considered different resources, including,, LinkedIn, as well as the companies’ websites and their portfolios. The list comprises 15 companies from major outsourcing hubs, grouped into three categories: small companies, with 50 to 249 employees, medium-sized vendors, with 250 to 999 experts, and big companies, with over 1,000 specialists. All these companies have at least 20% of their services listed under custom software development, and they all have reviews on Clutch.

Characteristics of IT vendors by their size

Small software outsourcing companies

This section features software outsourcing companies that house less than 250 people. Such IT vendors offer lower prices for their services. So if your budget is tight, they are a perfect fit.


  • Lower cost of services. Usually, these companies have less experience, so their services are cheaper compared to more reputable companies.
  • Very enthusiastic. They need to get the client’s attention, so such companies usually go the extra mile to please their client.
  • More flexible. Due to the limited number of employees, it is easier for them to change the processes and adjust them to the needs of a client.


  • No resources to scale up quickly. Human capital is limited in small companies, so any increase in the size of a team can be a real challenge.
  • Limited experience in the business processes. Small companies rarely work with large business entities, so their understanding of the procedures is purely theoretical.
  • Low recognition of the employer brand on the local IT market. Small software outsourcing companies may have a hard time attracting new specialists. People are less likely to join small, little-known companies which have no big projects to brag about.
  • Financially risky. If one of the projects fails, they can quickly go out of business due to the lack of resources to keep them running.

Check out these five vendors with less than 250 experts

The Software House

The software development company from Poland was established in 2012. Having 120 professionals on board, SH has been working on over 150 projects for small companies, mainly in financial services, manufacturing, education, etc.


This vendor offers mobile app and custom software development services to clients mostly in financial services. Founded back in 2002, the company delivers development services to companies all over the world in both mid-market and enterprise sectors, with a focus on fintech.

Upnetix JSC

The young company (est. in 2015), Upnetix, provides IT outsourcing in Bulgaria. This vendor specializes in delivering full-cycle software solutions. With over 120 professionals aboard, they have completed 80+ projects for 55 brands all over the world in eHealth, telecommunications, transportation, and other domains.


Established in 2003, this Indian software outsourcing company provides offshore development services to both mid-market and enterprise companies. Fingent has delivered over 650 projects to clients in various industries, including real estate, transportation, and business services. This IT provider was listed in 2017 Clutch ‘top developers’ recommendations.

Business Logic

With over 80 specialists on board, this Czech-based company creates custom solutions for clients in fintech, business analysis, retail, and others. Their website features references from customers in Europe, Canada, and the United States.

Mid-size software outsourcing companies

Clutch defines such vendors as the ones that employ between 250 and 999 professionals. They have enough resources and tech expertise to be able to work with both well-funded start-ups and large companies. They can successfully handle both discovery phase for new projects and long-term cooperation.


  • Experience of working with clients of all sizes. Serving many companies, from start-ups to enterprises, a company has both understanding of the processes and competence to handle them.  
  • Financial stability. Evolving from a small company, such vendors are more steady in their financial position, so they won’t fall through one of the projects gets closed.
  • Established brand reputation. Qualified specialists are more likely to join the company with a good employer image and choose the projects with a good name.
  • Ability to scale upon the needs of the clients. Mid-size companies have enough experienced developers to extend the team and find additional expertise on demand.
  • Well-organized processes with less red tape. Compared to large software outsourcing companies, such vendors are more agile in their procedures.


  • The talent pool is limited, so it might be hard for them to instantly assemble a large team (10+).

Here are 5 excellent service providers with 250 to 999 experts


Among the top outsourcing companies in Poland, there is a company that has a 20-year history of working with such acclaimed clients as Samsung and Bank of America, and half of their clients are of the mid-market size. The company serves clients in media and publishing, finance, healthcare, retail, and high tech. This vendor has offices in Belarus, Lithuania, Poland, Ukraine, and Russia.

Here you can find out a comparison between IT outsourcing in Poland and Ukraine.


This is the company from Romania that employs over 500 people who specialize in software and web development. Among the top clients of this vendor are Adobe, NHS, BMI Research, Sdob, Henkel, and others. Evozon has been working among multiple industries with the focus in enterprise-level content management applications and e-commerce.


Nearly half of Artezio’s clients are companies within the enterprise level. Founded back in 2000, this company has worked with Siemens, Idera, Sencha, and many others. Among the services provided are software engineering, business consulting, as well as IT outstaffing. The top domains this company works in are finance, technology, healthcare, and e-commerce. Their representatives are located in Belarus, Russia, Germany, and the USA.

CentLing Technologies

Established in 2009 in Qingdao (China), this vendor focuses on delivering solutions to clients in communication and information technology, offering assistance on software solutions and innovative products. Most of their clients are small businesses.

Cyber Infrastructure, Inc.

This Indian IT outsourcing vendor falls under the category of medium-sized companies serving their clients in travel and hospitality, retail, automotive, advertising and marketing, and gaming. With over 14 years of experience, Cyber Infrastructure helps companies of a similar size. The company’s website presents broad expertise in multiple areas, as well as numerous certifications.

Large software outsourcing companies

Typically, big companies employ over 1,000 experts. They have diversified experience across many industries; however, they are less flexible with the established procedures and higher cost of the services.


  • Enough resources to scale up momentarily. Such companies have enough human capital, to expand the teams rapidly;
  • Renowned employer brand. Many developers are interested in working for a company with a famous name.
  • In-depth knowledge of procedures adopted by enterprises. Working primarily with mid-market and enterprise-level clients, such vendors are well-aware of the particular aspects of working with big firms.
  • Ability to handle massive projects. With the big pool of experts on board, these vendors can work with projects that involve a large number of experts required.
  • A versatile portfolio and expertise. Large companies usually are represented within many markets and across numerous industries.


  • Cost of their services. As the established brands, large vendors put a hefty price tag on their services.
  • Less attention to small size clients. If for some reason, they choose to work with small projects, the last one is likely to receive less attention from the vendor.
  • Quality of the services can vary for different clients. With many clients and projects, it is complicated to deliver the same top quality services and excellent experience in every case.
  • Bureaucracy and complicated procedures. The bigger a software outsourcing company becomes, the more complicated processes are. It results in less to no flexibility in the proceedings.

These are five large companies with over 1,000 experts


N-iX employs the best software developers in Ukraine (Kyiv and Lviv), Poland, Bulgaria

N-iX is a top software outsourcing company in Eastern Europe. They specialize in custom software development, serving mostly the mid-market and enterprise level clients. The company has offices across Eastern Europe.

This vendor has versatile tech expertise, including Big Data, data science, AI & ML, cloud solutions, VR & AR, embedded software, etc. The company has numerous industry awards, including such as 2021 Top 100 Global Outsourcing Companies by IAOP, 2018 Inc. 5000 Europe, 2017 Software 500 Ranking, and many more.

This IT outsourcing provider from Ukraine has a successful record of driving the development for the world-known companies like Lebara, Fluke, Origin Enterprises, Currencyclould, and more than 50 other long-term partnerships.

Kellton Tech

With over 1,500 experts employed, this offshore IT company assists the companies in both custom software development and IoT. Clutch provides feedback from their clients in the US, the UK, and India working in IT, financial and business services, as well as real estate and healthcare.


This company offers software development services to mid-size and small businesses within multiple industries including automotive, banking and finance, energy, healthcare others.

With over 25 years on the market, (est. in 1991), the company employs over 2,000 professionals and is represented in 11 countries across Europe and North America.


A large IT company that serves mid-size clients (almost half of their customers). This vendor has over 30 offices in 12 countries, providing end-to-end solutions in Big Data, AI, Machine Learning, IoT, DevOps, and experience design. The company serves industries like healthcare, finance, media, and other industries.

IBA Group

With over 2,500 experts employed, this Czech company has development centers in Belarus, the Czech Republic, Slovakia, Bulgaria, and Kazakhstan. This vendor provides nearshore outsourcing services to companies in manufacturing, transportation, energy, telecommunications, etc., providing both development solutions and products for their clients.


While choosing the software outsourcing company, pay attention to both their size, size of the clients they help, as well as the number of developers they employ. Small vendors are great when your own company is small and you don’t need to hire a large team. Mid-size companies offer more flexibility with recruitment and development while still having enough expertise to handle complex projects. Large vendors can offer a wider pool of developers; however, they might be paying less attention to you in case your company is small.

Top 15 companies in custom software development

Why choose N-iX as your software outsourcing company?

The company employs over 900 professionals in 4 development centers in Ukraine, Poland, Bulgaria, and Belarus. We have served as strategic partners with both fast-growing startups and large-scale businesses.

If you have any questions about the operating processes, contact our experts right now!

logo logo