Illinois hosts a vibrant software development industry characterized by innovation and competition. Companies of various sizes create applications, automate tasks, and improve digital infrastructure for businesses across sectors like healthcare, finance, and education. This landscape is evolving with advancements in areas such as artificial intelligence and cloud computing, driving local firms to adopt new technologies to remain competitive. The focus on user experience and agile methodologies is making solutions more functional and accessible. Amidst growing demand, the industry in Illinois is expected to further expand, providing opportunities for tech talent and entrepreneurs alike.


The companies featured in this list vary in size, from small teams to larger enterprises, and are headquartered primarily in major urban centers like Chicago and its surroundings. Founded between 1999 and 2018, these firms showcase specialties in areas such as custom application development, digital transformation, and IT consulting. Many employ creative approaches to problem-solving, aiming to enhance business processes through technology. The geographical influence diverges, with a significant employee base in countries like India and Ukraine, reflecting the global reach of Illinois software companies.


Continue reading for insights into Illinois' top software development companies.


Top 23 Software Development Companies in Illinois


1. Intellias

  • Website: intellias.com
  • Ownership type: Venture Capital
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: Ukraine 72%, Poland 10%, Portugal 3%, Other 14%
  • Latest funding: September 2018
  • Founded year: 2002
  • Headcount: 1001-5000
  • LinkedIn: intellias

Intellias is a Chicago-based software engineering firm founded in 2002. The company specializes in a wide array of services, including product engineering, quality engineering, and cloud solutions. With a workforce of approximately 2,898 employees, Intellias operates primarily out of Ukraine, with additional teams in Poland, Portugal, Spain, and Germany. They serve clients across multiple industries such as mobility, financial services, telecom, retail, and high-tech. Intellias has made strides in enhancing its service offerings through strategic acquisitions, such as C2 Solutions, which bolstered their healthcare expertise. Their focus on integrating advanced technologies like AI and machine learning into their solutions reflects their commitment to driving innovation and efficiency for their clients. Intellias has not reported any recent funding, indicating a stable operational model since their last funding round in 2018.


2. Codiant - A YASH Technologies Company

  • Website: codiant.com
  • Ownership type: Corporate
  • Headquarters: East Moline, Illinois, United States (USA)
  • Employee distribution: India 99%
  • Latest funding: October 2017
  • Founded year: 2010
  • Headcount: 201-500
  • LinkedIn: codiant-a-yash-technologies-company

Codiant - A YASH Technologies Company, based in East Moline, Illinois, is a technology firm that specializes in software development and IT consulting. Established in 2010, Codiant has built a reputation for delivering a wide array of services, including mobile app development, web development, and digital transformation solutions. The company caters to businesses across multiple sectors, focusing on creating customized technology solutions that improve operational efficiency and enhance user experiences. With a significant portion of its workforce located in India, Codiant leverages global talent to meet the needs of its clients. Their portfolio includes various successful projects, and they have received commendations from clients for their dedication and expertise in executing complex software solutions.


3. Intersog

  • Website: intersog.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: Ukraine 57%, United States (USA) 18%, Mexico 13%, Other 13%
  • Founded year: 2005
  • Headcount: 51-200
  • LinkedIn: intersog

Intersog is a technology consulting and software development firm based in Chicago, Illinois, founded in 2005. The company specializes in custom software development, artificial intelligence (AI) strategy, and IT solutions. They serve a variety of industries, including healthcare, automotive, education, and finance, providing tailored services to help businesses modernize their technology and innovate effectively. Intersog employs a workforce of approximately 111 professionals, with a significant portion based in Ukraine, indicating a strong presence in Eastern Europe. Their offerings include AI automation, big data development, mobile and web application development, and IT staff augmentation. Intersog has partnered with over 250 organizations across 10 countries, reflecting their commitment to transforming businesses through advanced technology solutions. They have not reported any external funding, which suggests a self-sustaining business model.


4. 8th Light

  • Website: 8thlight.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: United States (USA) 85%, United Kingdom (UK) 14%, Other 1%
  • Founded year: 2006
  • Headcount: 51-200
  • LinkedIn: 8th-light

8th Light is a technology services company based in Chicago, Illinois, founded in 2006. With a workforce of approximately 169 employees, the firm specializes in software development and consulting, providing a broad array of services that include software strategic consulting, product design, AI solutions, and skill development. Their clientele spans various industries, reflecting their ability to enhance digital capabilities and operational efficiency for businesses and organizations. 8th Light has worked with prominent clients such as Pfizer, Grubhub, and Fidelity Life Association, demonstrating their expertise in delivering complex software solutions. The company emphasizes a human-centered design approach and agile methodologies, ensuring that their software products are not only functional but also user-friendly. Their commitment to continuous improvement and skill development further positions them as a relevant player in the software development sector.


5. HyperSense Software


HyperSense Software, based in Schaumburg, Illinois, is a private software development and IT consulting firm that has been operational since 2003. The company specializes in creating custom software solutions, integrating artificial intelligence, and providing digital transformation services. With a team of over 60 professionals, HyperSense has successfully completed more than 200 projects across various sectors, including healthcare, telecommunications, finance, and e-commerce. Their services range from mobile application development to IT consultancy, showcasing their ability to cater to the unique needs of their clients. HyperSense is ISO 9001:2015 and ISO/CEI 27001:2018 certified, ensuring adherence to high-quality management and information security standards. The company operates with a global perspective, leveraging a team based in Romania to deliver innovative tech solutions tailored to different business environments.


6. Wezom

  • Website: wezom.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: Ukraine 80%, United States (USA) 10%, Canada 5%, Other 5%
  • Founded year: 1999
  • Headcount: 201-500
  • LinkedIn: wezom

Wezom is a Chicago-based software development company founded in 1999. With a workforce of approximately 221 employees, the company has established itself as a provider of custom software solutions tailored to various industries, including healthcare, eCommerce, logistics, and more. Wezom offers a range of services such as UX/UI design, web and mobile app development, and data science, aiming to enhance operational efficiency for medium-sized businesses. The company has successfully completed over 3,500 projects, demonstrating its capability and experience in delivering effective technology solutions. Wezom's team is primarily distributed across Ukraine, with a smaller presence in the United States and Canada, reflecting a global approach to talent acquisition. Their commitment to understanding client needs and delivering customized solutions positions them as a relevant player in the software development sector.


7. Liventus, Inc.

  • Website: liventus.com
  • Ownership type: Private
  • Headquarters: Northbrook, Illinois, United States (USA)
  • Employee distribution: India 68%, United States (USA) 32%
  • Founded year: 2002
  • Headcount: 51-200
  • LinkedIn: liventus-inc.

Liventus, Inc., based in Northbrook, Illinois, is a technology solutions provider that has been operational since 2002. The company specializes in custom software development and consulting services, catering to a variety of industries such as fintech, healthcare, and retail. Liventus focuses on enhancing technology infrastructure and operational efficiency for its clients through tailored solutions. With a workforce of approximately 203 employees, a significant portion of whom are located in India, Liventus demonstrates a strong capacity for project execution. Their service offerings include software engineering, application support, digital commerce, and business intelligence, among others. The company has built a reputation for delivering quality tech solutions, as evidenced by their case studies and client testimonials, which highlight successful projects that have driven business growth and improved user experiences.


8. Lexicon Networks

  • Website: lexiconnetworks.com
  • Ownership type: Private
  • Headquarters: West Chicago, Illinois, United States (USA)
  • Employee distribution: India 91%, United States (USA) 9%
  • Founded year: 2008
  • Headcount: 51-200
  • LinkedIn: lexiconnetworks

Lexicon Networks, founded in 2008 and based in West Chicago, Illinois, is a private technology services firm that specializes in software development and integration solutions. With a workforce of approximately 51-200 employees, the company has carved out a niche in providing tailored technology solutions to businesses and educational institutions. Their service offerings include web and mobile app development, integration management, and the creation of AI-driven virtual agents. Lexicon Networks emphasizes custom solutions, ensuring that their clients receive support that aligns with their specific operational needs. The company has established partnerships with notable platforms such as IBM App Connect, Jitterbit, and MuleSoft, showcasing their expertise in integrating complex systems and enhancing operational efficiency. Their commitment to ongoing support and maintenance further solidifies their role as a reliable partner in the technology services sector.


9. Intigate Technologies LLC


Intigate Technologies LLC, based in Chicago, Illinois, is an IT consulting firm founded in 2009. With a workforce of 51-200 employees, the company specializes in a wide array of services, including custom software development, managed IT services, and cybersecurity solutions. Intigate Technologies serves both global organizations and startups, helping them enhance operational efficiency and establish a strong market presence. The firm has over 14 years of experience in the industry, focusing on delivering tailored technological solutions to meet various business needs. Their service offerings extend to web and mobile development, UI/UX design, cloud computing, and data analytics, among others. Intigate Technologies has a significant presence in multiple sectors, including banking, healthcare, and e-commerce, which highlights their capability to cater to different market demands. The company operates with a commitment to quality and customer service, ensuring timely project completions and effective communication with clients.


10. Focused Labs

  • Website: focusedlabs.io
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Founded year: 2018
  • Headcount: 51-200
  • LinkedIn: build-focused-labs

Focused Labs, founded in 2018 and based in Chicago, Illinois, is a private software development company that focuses on modernizing legacy systems and delivering custom software solutions. With a team of approximately 36 employees, they emphasize a collaborative approach, working closely with clients to enhance their technological capabilities. Their services include legacy modernization, custom software development, AI implementation, and team enablement. Focused Labs has worked with notable clients such as Hertz and a major automaker, showcasing their ability to tackle complex software challenges across various sectors. Their commitment to continuous improvement and education within client teams positions them as a valuable partner in the software development industry.


11. Optivent Group Inc.

  • Website: optiventgroup.com
  • Ownership type: Private
  • Headquarters: Lisle, Illinois, United States (USA)
  • Employee distribution: United States (USA) 67%, India 33%
  • Founded year: 2018
  • Headcount: 51-200
  • LinkedIn: optivent-group

Optivent Group Inc., based in Lisle, Illinois, is a software development company founded in 2018. The firm specializes in creating custom software solutions and providing IT consulting services tailored to the unique needs of businesses across various sectors, including banking, retail, and healthcare. With a team of skilled developers and designers, Optivent focuses on enhancing operational efficiency and digital presence for its clients. Their service offerings include application development, testing services, infrastructure and cloud solutions, data analytics, artificial intelligence, and UI/UX design. The company has a notable presence in both the United States and India, reflecting a blend of local and global expertise. Optivent's commitment to quality and innovation positions it as a relevant player in the software development industry, catering to businesses looking for customized technology solutions.


12. Akurey

  • Website: akurey.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Founded year: 2008
  • Headcount: 51-200
  • LinkedIn: akureyco

Akurey, founded in 2008 and based in Chicago, Illinois, is a private software development company that specializes in custom software solutions, app development, and web development services. With a team of approximately 61 employees, Akurey focuses on enhancing digital products and improving user experiences through technology and design. Their service offerings include quality assurance engineering and strategic consulting, which are critical for ensuring the success of software projects. The company has completed over 250 projects, showcasing their experience and expertise in the industry. Akurey has also been recognized for its innovative approach, being nominated for the GOLD COMPANY award by CAMTIC and ranked among the top 10 most innovative companies by Procomer in Costa Rica. This recognition reflects their commitment to quality and strategic development in the software sector.


13. ITConnectUS

  • Website: itconnectus.com
  • Ownership type: Private
  • Headquarters: Schaumburg, Illinois, United States (USA)
  • Founded year: 2016
  • Headcount: 201-500
  • LinkedIn: itconnectus-inc.

ITConnectUS, founded in 2016 and based in Schaumburg, Illinois, is a private IT consulting and software development firm. The company specializes in providing technology solutions, staffing services, and digital innovation to businesses across various sectors. With a workforce of approximately 200 professionals, ITConnectUS operates globally, focusing on the US, Canada, and APAC regions. Their service offerings include web and mobile development, cloud computing, data analytics, and artificial intelligence, among others. They also provide consulting services in technology advisory, business analysis, and project management. ITConnectUS emphasizes collaboration and client satisfaction, aiming to enhance IT infrastructure and facilitate the adoption of new technologies for their clients. Their portfolio includes proprietary products like Xoomatic ATS/CRM and various management systems, showcasing their capability in creating tailored solutions for different business needs.


14. Plego

  • Website: plego.com
  • Ownership type: Family Owned
  • Headquarters: Downers Grove, Illinois, United States (USA)
  • Employee distribution: United States (USA) 58%, Pakistan 42%
  • Founded year: 2002
  • Headcount: 11-50
  • LinkedIn: plego-technologies

Plego Technologies, based in Downers Grove, Illinois, is a family-owned software development agency founded in 2002. The company specializes in creating custom technology solutions that cater to a wide array of industries. Their service portfolio includes web design, application development, mobile apps, cloud computing, and advanced data analytics. Plego has a strong emphasis on innovation, aiming to enhance operational efficiency for their clients. With a workforce of approximately 38 employees, they have successfully completed over 5,000 projects and served more than 1,000 clients, showcasing their extensive experience in the software development industry. Plego's expertise also extends to emerging technologies such as machine learning and artificial intelligence, positioning them as a relevant player in the evolving tech landscape.


15. Eight Bit Studios

  • Website: eightbitstudios.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2008
  • Headcount: 11-50
  • LinkedIn: eight-bit-studios

Eight Bit Studios, based in Chicago, Illinois, is a consulting firm that specializes in custom software development and app services. Established in 2008, the company has carved out a niche in creating tailored solutions for businesses across various sectors, including banking and healthcare. Their focus is on enhancing user experiences and operational efficiency through expertise in mobile and web applications. With a team of 16 employees, Eight Bit Studios operates with a boutique approach, allowing for personalized service and attention to detail. The firm emphasizes a playful yet professional culture, drawing inspiration from the simplicity and charm of 8-bit games. Their portfolio showcases a range of successful projects, reflecting their capability to deliver bespoke applications that meet unique business objectives. As they celebrate 15 years in the industry, Eight Bit Studios continues to evolve, adapting to the changing needs of their clients and the technological landscape.


16. QCerris

  • Website: qcerris.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: Serbia 97%, United States (USA) 3%
  • Founded year: 2015
  • Headcount: 51-200
  • LinkedIn: qcerris

QCerris, based in Chicago, Illinois, is an IT consulting and software development firm founded in 2015. With a workforce of approximately 65 employees, the company specializes in delivering customized solutions across software development, data services, and cloud technologies. QCerris primarily serves clients in the health, fintech, and logistics sectors, helping them leverage technology to enhance operational efficiency and drive growth. Their service offerings include end-to-end software development, data engineering, data security, and DevOps, showcasing their comprehensive approach to meeting client needs. The company emphasizes a commitment to technical excellence, hiring top talent to ensure high-quality service delivery. QCerris has also positioned itself as a partner for businesses looking to navigate the complexities of digital transformation, particularly in industries that require stringent regulatory compliance and innovative technology solutions.


17. Wappnet Systems Pvt. Ltd.

  • Website: wappnet.com
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Employee distribution: India 95%, United States (USA) 3%, Canada 3%
  • Founded year: 2018
  • Headcount: 51-200
  • LinkedIn: wappnet-systems

Wappnet Systems Pvt. Ltd., founded in 2018, is a software development and IT consulting firm based in Chicago, Illinois. The company specializes in providing customized software solutions tailored to the unique needs of its clients. Their service offerings include mobile app development, e-commerce services, ERP and CRM solutions, and digital marketing. Wappnet aims to enhance the online presence and operational efficiency of businesses through innovative technology solutions. With a workforce primarily located in India, the company has successfully delivered over 300 projects, showcasing its capability in the industry. Their commitment to quality and customer satisfaction is reflected in a high customer retention rate of 93%. Wappnet's involvement in emerging technologies such as AI, blockchain, and IoT further demonstrates its adaptability and relevance in the fast-evolving tech landscape.


18. IIIMPACT, Inc.

  • Website: iiimpact.io
  • Ownership type: Private
  • Headquarters: Chicago, Illinois, United States (USA)
  • Founded year: 2004
  • Headcount: 11-50
  • LinkedIn: iiimpactuxdesign

IIIMPACT, Inc. is a Chicago-based UX design agency that specializes in software development and consulting services. Founded in 2004, the company focuses on enhancing the usability of complex enterprise applications across various sectors, including technology, healthcare, and finance. IIIMPACT employs agile methodologies and user-centered design principles to improve operational efficiency and user experience. The firm has successfully launched hundreds of digital products, helping clients navigate the challenges of digital transformation. Their expertise spans product immersion, design sprints, and a range of development frameworks, including Angular, React, and .NET. IIIMPACT's commitment to integrating change management and strategy into their projects positions them as a valuable partner for businesses looking to optimize their software products and processes.


19. Armia Systems, Inc

  • Website: armia.com
  • Ownership type: Private
  • Headquarters: Deerfield, Illinois, United States (USA)
  • Employee distribution: India 97%, United States (USA) 2%
  • Founded year: 2001
  • Headcount: 201-500
  • LinkedIn: armia-systems-inc

Armia Systems, Inc., based in Deerfield, Illinois, is a private technology firm founded in 2001. The company specializes in software and application development, providing a wide array of services that include mobile app development, web app development, e-commerce solutions, and startup consulting. With a workforce of approximately 290 employees, the majority of whom are located in India, Armia Systems leverages a global delivery model to serve its clients effectively. Their portfolio showcases a commitment to creating innovative solutions tailored to the needs of both startups and established enterprises. The company emphasizes user-centered design and aims to deliver measurable returns on investment for its clients. Armia Systems has built a reputation for its technical expertise and quality-driven delivery model, making it a notable player in the software development industry.


20. Caxy Interactive

  • Website: caxy.com
  • Ownership type: Family Owned
  • Headquarters: Chicago, Illinois, United States (USA)
  • Founded year: 1999
  • Headcount: 11-50
  • LinkedIn: caxy-inc-

Caxy Interactive, based in Chicago, Illinois, is a technology consulting firm that has been operational since 1999. The company specializes in software development and digital transformation, providing a range of services that include technology strategy, custom software solutions, and team training. Caxy Interactive serves clients across various industries, such as manufacturing, healthcare, construction, and private equity. Their mission is to help businesses enhance efficiency and navigate the complexities of technology integration. With a team of 11 to 50 employees, Caxy Interactive emphasizes collaboration and communication, ensuring that they build strong relationships with their clients. Their focus on creating tailored solutions to meet specific business needs positions them as a relevant player in the software development industry.


21. SenecaGlobal

  • Website: senecaglobal.com
  • Ownership type: Private
  • Headquarters: Oak Brook, Illinois, United States (USA)
  • Employee distribution: India 95%, United States (USA) 5%
  • Founded year: 2007
  • Headcount: 201-500
  • LinkedIn: senecaglobal

SenecaGlobal, founded in 2007 and based in Oak Brook, Illinois, is a private technology solutions provider that specializes in software development and IT consulting. With a workforce of approximately 394 employees, the company primarily operates out of India, which constitutes 95% of its employee base. SenecaGlobal offers a wide array of services, including custom software development, cloud enablement, and managed services. They serve various sectors, notably healthcare and finance, and focus on assisting clients in accelerating their digital transformation efforts. The company has received recognition for its innovative approaches, such as being named one of the most promising AWS solutions providers by CIO Review in 2022. Their emphasis on delivering high-quality, bug-free code and maintaining strong client relationships highlights their commitment to excellence in the software development industry.


22. Balaji Inter Info Systems LLC


Balaji Inter Info Systems LLC, founded in 2001 and based in Mumbai, is a software development firm that provides custom software solutions, IT consulting, and digital transformation services. The company aims to assist businesses in navigating complex challenges through innovative technology. With a team of skilled professionals, Balaji Inter Info Systems focuses on delivering reliable and effective solutions tailored to client needs. Their service offerings include enterprise software development, mobile app development, IT consulting, and quality assurance, among others. They cater to various industries, such as healthcare, finance, and retail, demonstrating their capability to address sector-specific requirements. The company also serves as the back office for Next Millennium Inc., a US-based entity, which may enhance their operational credibility and market reach.


23. Bitovi

  • Website: bitovi.com
  • Ownership type: Private
  • Headquarters: Libertyville, Illinois, United States (USA)
  • Employee distribution: United States (USA) 86%, Canada 10%, Mexico 4%
  • Founded year: 2005
  • Headcount: 51-200
  • LinkedIn: bitovi

Bitovi, founded in 2005 and based in Libertyville, Illinois, is a private consulting firm that specializes in digital product development and software engineering. With a team of 73 employees, Bitovi offers a comprehensive suite of services including project management, product design, frontend and backend development, and DevOps engineering. The firm has established a strong presence in the industry by collaborating with high-profile clients such as Yum! Brands, Levi's, and Lowe's, helping them to enhance their digital platforms and operational efficiency. Bitovi is also known for its commitment to open-source initiatives, contributing tools and resources that benefit the broader tech community. Their focus on training and staff augmentation further demonstrates their dedication to empowering teams and improving project outcomes. Bitovi has maintained a fully remote work culture for over 15 years, showcasing their adaptability in a changing work environment.



Software Development Insights: Key Companies in Illinois


CompanyHeadquarterSizeFoundedOwnership
IntelliasChicago, Illinois, United States (USA)1001-50002002Venture Capital
Codiant - A YASH Technologies CompanyEast Moline, Illinois, United States (USA)201-5002010Corporate
IntersogChicago, Illinois, United States (USA)51-2002005Private
8th LightChicago, Illinois, United States (USA)51-2002006Private
HyperSense SoftwareSchaumburg, Illinois, United States (USA)51-2002003Private
WezomChicago, Illinois, United States (USA)201-5001999Private
Liventus, Inc.Northbrook, Illinois, United States (USA)51-2002002Private
Lexicon NetworksWest Chicago, Illinois, United States (USA)51-2002008Private
Intigate Technologies LLCChicago, Illinois, United States (USA)51-2002009Private
Focused LabsChicago, Illinois, United States (USA)51-2002018Private
Optivent Group Inc.Lisle, Illinois, United States (USA)51-2002018Private
AkureyChicago, Illinois, United States (USA)51-2002008Private
ITConnectUSSchaumburg, Illinois, United States (USA)201-5002016Private
PlegoDowners Grove, Illinois, United States (USA)11-502002Family Owned
Eight Bit StudiosChicago, Illinois, United States (USA)11-502008Private
QCerrisChicago, Illinois, United States (USA)51-2002015Private
Wappnet Systems Pvt. Ltd.Chicago, Illinois, United States (USA)51-2002018Private
IIIMPACT, Inc.Chicago, Illinois, United States (USA)11-502004Private
Armia Systems, IncDeerfield, Illinois, United States (USA)201-5002001Private
Caxy InteractiveChicago, Illinois, United States (USA)11-501999Family Owned
SenecaGlobalOak Brook, Illinois, United States (USA)201-5002007Private
Balaji Inter Info Systems LLCChicago, Illinois, United States (USA)11-502001Private
BitoviLibertyville, Illinois, United States (USA)51-2002005Private


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