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 builds enterprise fintech software for banks, fintech companies, brokers, investment firms, and other financial organizations. Its work covers digital banking, lending, trading, payments, and wealth management. The team also builds financial analytics, KYC and onboarding flows, and financial data platforms. Beyond new products, Itexus modernizes legacy systems, handles complex API integrations, cloud engineering, and AI implementation, and offers fintech staff augmentation. With a US headquarters and clients across North America, it fits Illinois companies that want an outside engineering team focused on fintech.
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 was founded in Chicago in 1993 and still keeps a Chicago office. In financial services, it works on banking, payments, wealth management, insurance, and digital lending. It also modernizes core banking, builds cloud platforms, and helps firms change how they engineer software. Clients range from established banks to fintech scale-ups. Past projects include new lending platforms, payment modernization, application consolidation, and cloud-native financial infrastructure. Its size and engineering depth suit major financial institutions running 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 is headquartered in Chicago and builds custom financial software for banks, investment firms, fintech companies, insurers, and private equity firms. Typical projects include loan origination platforms, trading and portfolio systems, and customer portals. SPR also builds compliance workflows and data infrastructure, and connects new tools to legacy financial systems. The team works with AI, cloud platforms, analytics, and API-first architectures. Financial companies can use SPR to build a new product or to modernize one they already run.
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 builds custom technology platforms for banks, fintech companies, payment processors, wealth managers, and other financial firms. Its financial services practice modernizes platforms and builds transaction processing systems, including ones designed for high transaction volumes. It also builds compliance-focused applications and integrations. Forte has a Chicago presence plus several other US and international locations. That suits Illinois financial companies that want 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
Caxy builds custom software for financial services and fintech businesses from its headquarters on Van Buren Street in Chicago. Its financial work includes trading interfaces, options analytics, real-time financial data, and investment platforms. Caxy also builds financial wellness software and integrations with banking infrastructure. Its projects include work for tastytrade, tastylive, Harbor Capital Advisors, and Best Money Moves. Caxy is a practical choice for Illinois financial companies whose specialized applications do not fit 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, based in Chicago, offers product engineering, experience design, custom development, cloud infrastructure, AI, and data services. Financial services is one of its named industries, and its published work includes financial compliance and mobile banking projects. Its engineers build custom applications, integrations, and cloud systems, and handle quality assurance. That lets Codal work on customer-facing financial products as well as the infrastructure behind them.
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 only with financial services organizations and fintech companies. It builds custom software and digital products, works on open banking and embedded finance, and modernizes customer experience. Its clients include banks, wealth managers, investment firms, insurers, and fintech startups. In one published project, Highland designed and built a spending and money management app backed by a credit union. From its Chicago office, it gives Illinois financial institutions a local team for product strategy, design, research, and development.
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, and modernize customer experiences. It also integrates platforms such as Salesforce. Its Chicago fintech work includes secure financial platforms, internal tools, and data flows. It also builds banking and credit union apps and AI-enabled financial processes. LaunchPad Lab fits financial organizations that need both product development and workflow modernization from one 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 offers software development and technology consulting to banks, fintech companies, and insurers. Its financial work includes banking modernization, real-time analytics, risk management, AI, mobile applications, and custom products. Past projects include a lending app with fraud monitoring and development work for Chicago-based Northern Trust. Intersog can deliver a full software project or add engineers 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 in fintech, trading, payments, blockchain, and investment apps. It has built online brokerage systems, intelligent trading platforms, payment software, financial analytics, and regulated DeFi infrastructure. The company also does web and mobile development, APIs, enterprise platforms, cloud systems, and system integration. So it can build both customer-facing fintech products and the operational technology underneath them.
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 is based in Downers Grove, Illinois, and lists fintech as one of its core industries. In fintech, it builds custom software and mobile apps around financial workflows, with attention to scalability, security, and data handling. Its published client references include lending and credit businesses. Small and mid-size financial firms that want a development team in the Chicago metropolitan area can work with it locally.
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 builds custom software, web and SaaS applications, AI, and cloud infrastructure. It also works on blockchain and digital transformation. Fintech is one of the industries it serves. Its blockchain practice builds decentralized finance apps, crypto wallets, exchanges, lending protocols, and tokenized assets. KitelyTech suits financial products that mix standard application development with blockchain or AI parts.
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 builds compliance systems, customer-facing AI products, and fraud and anomaly detection. It also handles financial data integration, analytics, and generative AI applications. HatchWorks AI takes on projects where AI, data infrastructure, and custom software must work as one financial platform. Illinois fintech and financial services companies planning new AI products, or modernization with a heavy data side, are a good match.
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 has a Chicago office and offers custom software development and fintech solutions. Its fintech work includes asset allocation and investment apps, consumer banking, payments, and financial analytics. The company also does web and mobile development, UI and UX design, QA, and dedicated development teams. That means Taction can cover more of the product lifecycle than the core fintech features alone.
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 a custom software development company headquartered in Bartlett, Illinois, with a dedicated financial services practice. Its fintech work covers custom applications, payment systems, digital lending, cybersecurity, big data, analytics, and integrations. It also builds enterprise software and handles API and SaaS integrations. That helps financial organizations connect new applications to existing accounting, finance, and operational systems. Because it is based in Illinois, apHarmony works with local clients directly, not only 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.