Illinois has a substantial financial technology market centered around Chicago, with software firms working across banking, payments, lending, wealth management, trading, insurance, and financial data. The companies below combine fintech or financial services development capabilities with an Illinois office, headquarters, local delivery presence, or established service coverage for US financial organizations.
1. Itexus
Itexus develops enterprise fintech software for banks, fintech companies, brokers, investment firms, and other financial organizations. Its work covers digital banking, lending, trading, payments, wealth management, financial analytics, KYC and onboarding, and financial data platforms. The company also handles legacy modernization, complex API integrations, cloud engineering, AI implementation, and fintech staff augmentation. Itexus operates from a US headquarters and serves financial organizations throughout North America, making its delivery model suitable for Illinois companies that need a fintech-focused external engineering team.
Key Facts
- Best for: Complex and regulated fintech products
- Core services: Fintech software development, fintech apps, banking software, trading platforms, AI implementation, legacy modernization
- Financial sectors: Banking, payments, lending, investment management, wealth management, trading
- US coverage: Serves financial organizations across North America
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Thoughtworks
Thoughtworks has deep roots in Illinois, having been founded in Chicago in 1993 and maintaining a Chicago office. Its financial services work covers banking, payments, wealth management, insurance, digital lending, core banking modernization, cloud platforms, and software engineering transformation. The firm works with both established banks and fintech scale-ups, including projects involving new lending platforms, payment modernization, application consolidation, and cloud-native financial infrastructure. Its size and engineering depth make it particularly suited to major financial institutions working through large modernization programs.
Key Facts
- Best for: Enterprise banking and financial platform modernization
- Core services: Software engineering, core banking modernization, digital lending, payments technology, cloud modernization
- Financial sectors: Banking, payments, wealth management, insurance
- Illinois presence: Chicago office at 200 E Randolph St
Contact Information
- Website: www.thoughtworks.com
- Email: moc.skrowthguoht@su-tcatnoc
- Address: 200 E Randolph St, 25th Floor, Chicago, IL 60601-6501
- LinkedIn: www.linkedin.com/company/thoughtworks
- Facebook: www.facebook.com/Thoughtworks
- Instagram: www.instagram.com/thoughtworks
- Twitter: x.com/thoughtworks
3. SPR
SPR operates from its headquarters in Chicago and provides custom financial software development for banks, investment firms, fintech companies, insurers, and private equity organizations. Projects can involve loan origination platforms, trading and portfolio systems, customer portals, compliance workflows, data infrastructure, and integrations with legacy financial systems. SPR also works with AI, cloud platforms, analytics, and API-first architectures, giving financial companies several options for either creating new products or modernizing existing platforms.
Key Facts
- Best for: Mid-size and large financial institutions
- Core services: Custom financial software, mobile development, system integration, AI, cloud, data engineering
- Project types: Loan platforms, trading systems, portfolio management, client portals, regulatory reporting
- Illinois presence: Headquarters in Chicago
Contact Information
- Website: spr.com
- Phone: 312-756-1760
- Address: Willis Tower, 233 South Wacker Drive, Suite 3500, Chicago, IL 60606
- LinkedIn: www.linkedin.com/company/spr
- Twitter: x.com/\_SPRConsulting
4. Forte Group
Forte Group works with banks, fintech companies, payment processors, wealth managers, and other financial services organizations on custom technology platforms. Its financial services practice includes platform modernization, transaction processing systems, compliance-focused applications, integrations, and systems designed for high transaction volumes. The company maintains a presence in Chicago alongside several other US and international locations, which can suit Illinois financial companies looking for access to a distributed engineering organization.
Key Facts
- Best for: Financial platform modernization and engineering team extension
- Core services: Product engineering, platform modernization, software development, system integration
- Financial sectors: Banking, fintech, payments, wealth management
- Illinois presence: Chicago location
Contact Information
- Website: www.fortegrp.com
- Email: moc.prgetrof@tcatnoc
- Phone: +1 312 757 4944
- Address: 1200 N Federal Highway Boca Raton, FL 33432
- LinkedIn: www.linkedin.com/company/fortegroup
- Facebook: www.facebook.com/fortegroupinc
- Instagram: www.instagram.com/fortegroup\_people
- Twitter: x.com/ForteGrp
5. Caxy
Chicago-based Caxy develops custom software for financial services and fintech businesses from its headquarters on Van Buren Street. Its financial work includes trading interfaces, options analytics, real-time financial data, investment platforms, financial wellness software, and integrations with banking infrastructure. Projects include work associated with tastytrade, tastylive, Harbor Capital Advisors, and Best Money Moves. Caxy can be a practical option for Illinois financial companies dealing with specialized applications that do not fit comfortably into standard off-the-shelf platforms.
Key Facts
- Best for: Custom trading, investment, and financial data platforms
- Core services: Custom software development, product strategy, product design, technology strategy, integration
- Financial capabilities: Trading interfaces, financial data, banking integrations, investment applications
- Illinois presence: Chicago headquarters
Contact Information
- Website: www.caxy.com
- Address: 212 W Van Buren St, Suite 1000, Chicago, IL 60607
- LinkedIn: www.linkedin.com/company/caxy-interactive
- Instagram: www.instagram.com/caxygram
- Twitter: x.com/caxy
6. Codal
Codal combines product engineering, experience design, custom development, cloud infrastructure, AI, and data services from its Chicago location. Financial services are one of its defined industry areas, with published work involving financial compliance and mobile banking. Its engineering capabilities include custom applications, integrations, quality assurance, and cloud systems, allowing the company to work on both customer-facing financial products and supporting infrastructure.
Key Facts
- Best for: Financial products combining software engineering and user experience
- Core services: Product engineering, custom development, cloud infrastructure, integrations, AI and data
- Financial work: Compliance platforms and mobile banking experiences
- Illinois presence: Chicago office
Contact Information
- Website: codal.com
- Email: moc.ladoc@asu
- Phone: +1 (312) 219 8691
- Address: 433 W Van Buren St, Suite 205, Chicago, IL 60607
- LinkedIn: www.linkedin.com/company/gocodal
- Facebook: www.facebook.com/gocodal
- Instagram: www.instagram.com/gocodal
- Twitter: x.com/gocodal
7. Highland
Highland works specifically with financial services organizations and fintech companies on custom software, digital products, open banking, embedded finance, and customer experience modernization. Its experience includes banking, wealth management, investment firms, insurance, and fintech startups. One published project involved designing and building an integrated spending and money management application backed by a credit union. The company operates from Chicago, giving Illinois financial institutions access to a locally based product strategy, design, research, and development team.
Key Facts
- Best for: Fintech product discovery and customer-facing financial applications
- Core services: Digital product development, research, UX design, custom software, product strategy
- Financial capabilities: Open banking, embedded finance, banking apps, process automation
- Illinois presence: Chicago office
Contact Information
- Website: www.highlandsolutions.com
- Email: moc.snoitulosdnalhgih@ksa
- Phone: (312) 863-7500
- Address: 125 S. Clark St., Suite 670, Chicago, IL 60603
- LinkedIn: www.linkedin.com/company/highland-chicago
8. LaunchPad Lab
LaunchPad Lab is a Chicago digital product firm with a dedicated financial services practice. It builds custom applications that connect financial systems, automate operational work, modernize customer experiences, and integrate platforms such as Salesforce. Its Chicago fintech work also covers secure financial platforms, internal tools, data flows, banking and credit union applications, and AI-enabled financial processes. This mix can suit financial organizations that need both product development and workflow modernization rather than a narrowly defined development team.
Key Facts
- Best for: Financial applications and workflow modernization
- Core services: Custom software, web applications, Salesforce development, AI software, managed services
- Financial sectors: Banks, credit unions, lenders, wealth management firms
- Illinois presence: Chicago-based firm
Contact Information
- Website: launchpadlab.com
- Email: moc.baldaphcnual@tcatnoc
- Phone: (312) 888-9651
- Address: 448 N La Salle Dr, Floor 9, Chicago, IL 60654
- LinkedIn: www.linkedin.com/company/launchpad-lab
- Facebook: www.facebook.com/LaunchPadLab
- Instagram: www.instagram.com/launchpadlab
9. Intersog
Intersog is headquartered in Chicago and provides software development and technology consulting for banks, fintech companies, and insurers. Its financial capabilities include banking modernization, real-time analytics, risk management, AI, mobile applications, and custom product development. The company's project history includes a lending application with fraud monitoring and development work for Chicago-based Northern Trust. Intersog can support either complete software projects or organizations that need extra engineering capacity around existing financial systems.
Key Facts
- Best for: Fintech engineering teams, mobile products, and banking modernization
- Core services: Custom development, AI, mobile apps, web applications, data analytics, staff augmentation
- Financial capabilities: Lending apps, risk management, fraud monitoring, banking transformation
- Illinois presence: Chicago headquarters
Contact Information
- Website: intersog.com
- Email: moc.gosretni@tcatnoc
- Phone: +1 833 468 3776
- Address: 220 N Green St, 2nd Floor, Chicago, IL 60607
- LinkedIn: www.linkedin.com/company/intersog
- Facebook: www.facebook.com/intersognorthamerica
- Twitter: x.com/Intersog
10. Velvetech
Velvetech has a Chicago office and a long-running financial software practice covering fintech, trading, payments, blockchain, and investment applications. Its work includes online brokerage systems, intelligent trading platforms, payment software, financial analytics, and regulated DeFi infrastructure. The company also handles web and mobile development, APIs, enterprise platforms, cloud systems, and system integration, allowing it to work across both customer-facing fintech products and underlying operational technology.
Key Facts
- Best for: Trading, brokerage, payment, and blockchain-based financial products
- Core services: Custom software, mobile apps, web development, APIs, SaaS, blockchain, AI
- Financial capabilities: Trading platforms, brokerage software, payments, DeFi
- Illinois presence: Chicago office
Contact Information
- Website: velvetech.com
- Phone: +1 (847) 559-0864
- Address: 5440 N. Cumberland Ave, Suite 150, Chicago, IL 60656
- LinkedIn: www.linkedin.com/company/velvetech
- Facebook: www.facebook.com/velvetech
- Instagram: www.instagram.com/velvetech
- Twitter: x.com/velvetech
11. Profusion Systems
Profusion Systems operates from Downers Grove, Illinois, and lists fintech among its core industry areas. Its fintech work focuses on custom software and mobile applications designed around financial workflows, scalability, security, and data handling. The company's broader development capabilities include mobile apps and custom software, while its published client references include lending and credit-related businesses. Its Illinois location makes it a locally based option for smaller and mid-size financial organizations that prefer working with a development team in the Chicago metropolitan area.
Key Facts
- Best for: Custom fintech software and mobile applications
- Core services: Custom software development, mobile development, digital solutions
- Industry focus: Fintech alongside several other business sectors
- Illinois presence: Downers Grove office
Contact Information
- Website: profusionsystems.com
- Email: moc.smetsysnoisuforp@ofni
- Phone: (847) 200-0801
- Address: 4927 Main St, Downers Grove, IL 60515
- LinkedIn: www.linkedin.com/company/profusion-systems
- Facebook: www.facebook.com/profusionsystem
- Instagram: www.instagram.com/profusionsystems
- Twitter: x.com/profusionsystem
12. KitelyTech
KitelyTech has a Chicago location and works across custom software, web and SaaS applications, AI, cloud infrastructure, blockchain, and digital transformation. Fintech is among the industries it supports, while its blockchain practice covers decentralized finance, crypto wallets, exchanges, lending protocols, and tokenized assets. This range makes the company more suitable for financial products that combine conventional application development with newer blockchain or AI components.
Key Facts
- Best for: Fintech products involving software, AI, or blockchain
- Core services: Custom software, SaaS development, mobile apps, AI, cloud, blockchain
- Financial capabilities: DeFi applications, wallets, exchanges, financial DApps
- Illinois presence: Chicago location
Contact Information
- Website: www.kitelytech.com
- Address: 1165 N Clark St, 7th Floor, Chicago, IL 60610
- Phone: (800) 274-2908
- LinkedIn: www.linkedin.com/company/kitelytech
13. HatchWorks AI
HatchWorks AI combines software engineering with AI and data services for financial organizations. Its financial practice covers compliance systems, customer-facing AI products, fraud and anomaly detection, financial data integration, analytics, and generative AI applications. The company works on technology initiatives where AI, data infrastructure, and custom software need to function as part of the same financial platform. It can suit Illinois fintech and financial services companies planning new AI-enabled products or modernization projects with a strong data component.
Key Facts
- Best for: AI-driven financial applications and data modernization
- Core services: AI product development, data modernization, machine learning, automation, software development
- Financial capabilities: Compliance, fraud detection, financial analytics, customer-facing AI
- Illinois presence: Chicago location
Contact Information
- Website: hatchworks.com
- Phone: 1-800-621-7063
- Email: moc.skrowhctah@tcennoc
- LinkedIn: www.linkedin.com/company/hatchworksai
- Facebook: www.facebook.com/hatchworksinc
- Instagram: www.instagram.com/hatchworksinc
14. Taction Software
Taction Software maintains a Chicago office and provides both custom software development and fintech solutions. Its financial technology work includes asset allocation and investment applications, consumer banking solutions, payments, financial analytics, and other applications for financial businesses. The company also provides web development, mobile development, UI and UX design, QA, and dedicated development teams, so it can cover a wider product lifecycle beyond the core fintech functionality.
Key Facts
- Best for: Banking, payment, and investment application development
- Core services: Custom software, mobile apps, web development, UI and UX, testing, dedicated teams
- Financial capabilities: Asset management, consumer banking, payments, financial analytics
- Illinois presence: Chicago office
Contact Information
- Website: www.tactionsoft.com
- Email: moc.tfosnoitcat@ofni
- Phone: +1 307 459 0850
- Address: 1016 W Jackson Boulevard, Chicago, IL 60607
- LinkedIn: www.linkedin.com/company/taction-software-llc
- Facebook: www.facebook.com/tactionsoftware
- Instagram: www.instagram.com/tactionsoftwarellc
15. apHarmony
apHarmony is an Illinois-based custom software development company with a dedicated financial services practice. Its fintech work covers custom application development, payment systems, digital lending, cybersecurity, big data, analytics, and integrations. The company also develops enterprise software and works on API and SaaS integrations, which can be useful for financial organizations connecting new applications with established accounting, finance, and operational systems. apHarmony is headquartered in Bartlett, Illinois, giving it a direct local presence rather than only serving the state remotely.
Key Facts
- Best for: Custom financial applications and enterprise software
- Core services: Custom software development, application development, API integration, SaaS integration, payment systems
- Financial capabilities: Digital lending, payments, cybersecurity, big data, analytics
- Illinois presence: Headquarters in Bartlett, Illinois
Contact Information
- Website: www.apharmony.com
- Phone: 630-855-7522
- Address: 1235 Humbracht Cir, Unit F, Bartlett, IL 60103
- LinkedIn: www.linkedin.com/company/apharmony
- Facebook: www.facebook.com/apharmony
Conclusion
Illinois offers a varied selection of fintech software development companies, particularly around Chicago and its surrounding technology market. The firms covered here work across banking platforms, payments, lending, trading, wealth management, financial analytics, AI, cloud modernization, and custom financial applications. The right choice depends on the project scope, regulatory requirements, technical complexity, and whether the priority is building a new fintech product, modernizing existing systems, or extending an internal engineering team.