Top Software Development Companies 2021 That Are Growing Fast | Hacker Noon



Andrew Marks Hacker Noon profile pictureAndrew Marks Hacker Noon profile picture

@andrewmarksAndrew Marks

Entrepreneur and writer passionate about technology

I’ve compiled this list of Top Software Development Companies 2021 based on an in-depth analysis of the companies’ websites, their achievements, rankings on reputable sources, and their worldwide footprint. I hope this article will help you find the right software development company.

For ranking the top software development companies on the list, I used the following formula that prioritizes companies with high growth and years on the market:



  • A = company growth rate* for 6-month period
  • B = company growth rate* for 12-month period
  • C = company growth rate* for 2-year period
  • Y = year founded

* Taken from LinkedIn Insights — a premium feature of LinkedIn, available to paid subscribers only.

In my ranking of the top custom software development companies below I provide the following information about each company:

  • Company description, with the key facts about the company;
  • Company’s website;
  • Services provided;
  • Year founded;
  • Office locations;
  • Company size (the number of employees according to each company’s LinkedIn page);
  • Minimum project size;
  • Average hourly rate;
  • Major clients;
  • Company growth rate (employee growth rate for the last 6 months, 12 months, and 2 years;
  • Developed projects.

Relying on this ranking as a guideline in your search for the right software development company, you should pay attention to these qualities as well:

  • The variety and complexity of successful projects in the company’s portfolio let you assess whether the company is experienced in the domain/technology.
  • In-depth expertise in the tasks that you would like to outsource.
  • Years in business. The more mature the software development company, the lower the risk it can go bankrupt.
  • Client testimonials and references. Positive reviews from clients confirm the software development company’s expertise and indicate its trustworthiness.
  • Communication. Because efficient communication is crucial for project success, make sure the software company’s developers have good English, cultural compatibility with your internal staff, and a fast Internet connection.

Now let’s have a look at the 2021 top fast-growing software development companies globally. I hope my ranking will help you make an informed decision about the best software development partner for your next project.


SiliconMint is a leading IT consulting and custom software development company with amazing growth. The company specializes in building complex software systems. With offices in San Francisco, New York, and Europe, the software company serves customers in the telecom, fintech, IoT, cybersecurity, education, and healthcare sectors.

To speed up software development, the company created the MintData no-code application development platform that allows building software up to 12 times faster.

Company’s website:

Services provided: custom software development, IT consulting, staff augmentation, dedicated development teams.

Founded in: 2012


  • San Francisco, California, USA
  • New York City, New York, USA
  • London, UK
  • Minsk, Belarus

Company size (LinkedIn): 56 people

Min. project size: not provided by the company

Avg. hourly rate: $50 — $99 / hr

Major clients: Verizon, Yahoo Japan, BCG, Goldman Sachs, RBS, Nasdaq, NYSE, WhiteHat Security.

Company growth (6m / 12m / 2y): 19% / 37% / 273%

Developed projects:

  • IoT system for Verizon
  • AI system for Yahoo Japan
  • Real-time underwriting system for a UK lender
  • Stock trading engine for Motif
  • Cloud-based, distributed file system for Hightail


The fastest-growing software development company in Latin America, BairesDev provides software outsourcing (custom software development), testing, and operational support services to startups and some of the largest global companies such as Google, Rolls-Royce, Motorola, and EY.

With over 1 mln software engineers applying to work with BairesDev, the custom software development company claims to have the largest pool of applicants in the industry.

Company’s website:

Services provided: custom software development, dedicated teams, IT staff augmentation.

Founded in: 2009


  • San Francisco, California, USA
  • New York City, New York, USA
  • Harvard, Massachusetts, USA
  • McLean, Washington, DC, USA
  • Greensboro, North Carolina, USA
  • Toronto, Canada
  • Barcelona, Spain
  • Buenos Aires, Argentina
  • São Paulo, Brazil
  • Bogota, Colombia
  • Mexico City, Mexico

Company size (LinkedIn): 1,944 people

Min. project size: $50,000+

Avg. hourly rate: $50 — $99 / hr

Major clients: Google, Rolls-Royce, Salesforce, Johnson & Johnson, HP.

Company growth (6m / 12m / 2y): 41% / 83% / 170%

Developed projects:

  • Facilitating real-time data for nuclear power plants
  • Developing top software solutions for Google
  • Custom cybersecurity solutions for Thomson Reuters
  • Expert maintenance services for ViacomCBS
  • Migrating legacy systems to .NET and C# for Associated Press

Merixstudio is a full-stack custom software development company with a head office in Poznan, Poland. They help companies build complex digital products, create web and mobile applications, and provide fully-fledged customer support. Merixstudio has experience working with companies of all sizes from all over the globe, including FOX, Volkswagen, Tesco, and many others.

Company’s website:

Services provided: web app development, software development consulting, product design, mobile app development

Founded in: 1999


  • Poznan, Poland
  • New York City, New York, USA
  • London, UK

Company size (LinkedIn): 207 people

Min. project size: $25,000+

Avg. hourly rate: $50 — $99 / hr

Major clients: Toshiba, FOX, Deutsche Post, Marks & Spencer, Orange, Volkswagen, The Independent, Tesco

Company growth (6m / 12m / 2y): 25% / 52% / 123%

Developed projects:

  • Risk-management app for DIY investors
  • Product design workshops
  • Digital wealth management application for one of the largest online investment and digital wealth management companies in Europe
  • Digitally automated web and mobile system for fleet operators
  • Mobile application built with React Native for a high school sports network


DCSL GuideSmiths is a custom software development company founded in 1994. For over 26 years, the company has created intelligent web, desktop, and mobile applications for established businesses, government organizations, not-for-profit organizations, and startups. Accredited with Microsoft Gold Partner status and ISO 9001 & ISO 27001, DCSL GuideSmiths provides highly competitive software development services, all built on best practice methodology and ways of working.

DCSL GuideSmiths is ranked 4th among the top custom software development companies based on employee growth rate and the company’s age.

Company’s website:

Services provided: custom business application development, web app development, mobile app development, Internet of Things, data migration services, team augmentation, digital transformation, DevOps, software project rescue, UX design, application support and software maintenance, QA & testing, security testing, hosting

Founded in: 1994


  • Farmborough, UK
  • London, UK
  • Manchester, UK
  • Bucharest, Romania

Company size (LinkedIn): 202 people

Min. project size: $50,000+

Avg. hourly rate: $50 — $99 / hr

Major clients: Abbot, Gladstone, Lidl, Cognex, Pearson, Tech Market View

Company growth (6m / 12m / 2y): 13% / 30% / 91%

Developed projects:

  • Digital Dashboard application for Smith & Nephew
  • Grant management system for WaterAid
  • Custom project management system for HDR
  • Optimized access to published education assets for Pearson
  • Engineer service app and portal for Mitsubishi


Kin + Carta is a global consulting firm that delivers end-to-end software development, product design, digital marketing, and advisory services. The software development company serves clients operating in numerous industries, including agriculture, financial services, insurance, healthcare, and retail. Living up to its motto “build the right things and build the things right”, Kin + Carta is trusted by the world’s largest companies and innovative startups like Cazoo, Unilever, American Express, Visa, Mastercard, and Lexus.

Kin + Carta is ranked 5th among the top software development companies based on employee growth rate and company’s age.

Company’s website:

Services provided: management consulting, software engineering and product design, digital marketing and connected customer experience

Founded in: 1981



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