California's banking and fintech market requires software teams that understand financial workflows, security, integrations, and regulatory requirements. The companies below cover banking applications, core banking modernization, payments, lending, financial platforms, and related software engineering services, with California offices or established U.S. operations serving financial-sector clients.
1. Itexus
Itexus develops software for banking, fintech, payments, lending, trading, and wealth management. Its banking capabilities cover mobile and online banking, digital account opening, KYC automation, digital lending, payment infrastructure, card management, fraud monitoring, open banking, and core banking integration. The company works with banks, fintech businesses, and other financial organizations across North America, supporting the development and modernization of digital financial products.
Key Facts
- Best for: Banks, fintech companies, and financial organizations building or modernizing digital products
- Core services: Banking software development, fintech development, mobile banking, lending, payments, digital wallets
- Specialization: Regulated financial products, complex integrations, legacy modernization
- Industries: Banking, fintech, payments, lending, wealth management, trading
- Location: United States, with services across North America
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, USA
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. BankInfra Technology
BankInfra Technology focuses on software for the banking and financial services industry. Based in Los Angeles, the company develops customized applications for banks and financial institutions. Its team combines banking and bank IT expertise, supporting projects involving financial workflows, regulatory requirements, data security, and other operational needs specific to financial organizations.
Key Facts
- Best for: Banks and financial institutions needing specialized custom banking applications
- Core services: Banking software development, financial applications, consulting
- Specialization: Custom banking systems and financial workflows
- Industries: Banking and financial services
- Location: Anaheim, California
Contact Information
- Website: www.bankinfra.com
- Email: moc.arfniknab@leinad
- Phone: +1 213 739 7900
- Address: 1151 N Magnolia Ave #101-B, Anaheim, CA 92801, USA
3. Ultracs Corp
Ultracs Corp provides technology for financial institutions, with a focus on banking infrastructure and integrated banking systems. Its offerings cover core banking, digital banking, API connectivity, CRM, fraud prevention, compliance, online lending, payments, cloud services, and professional support. The company is located in Irvine, California.
Key Facts
- Best for: Financial institutions modernizing banking infrastructure
- Core services: Core banking, digital banking, APIs, payments, lending, fraud prevention
- Specialization: Banking technology and integrated financial systems
- Industries: Banking and financial services
- Location: Irvine, California
Contact Information
- Website: ultracscorp.com
- Phone: (949) 561-1717
- Email: moc.procscartlu@seiriuqni
- Address: 15440 Laguna Canyon Road, Suite 120, Irvine, CA 92618, USA
- LinkedIn: www.linkedin.com/company/ultracscorp
- Twitter: x.com/UltracsC
4. Net Solutions
Net Solutions provides banking and financial software development for financial institutions and fintech companies. Its services cover secure digital platforms, fintech applications, lending systems, digital wallets, custom web and mobile applications, KYC integrations, and customer-facing banking experiences. The company maintains a Los Angeles office and works on digital transformation projects involving financial software and banking workflows.
Key Facts
- Best for: Financial institutions and fintech businesses modernizing customer-facing platforms
- Core services: Banking software, fintech development, digital wallets, lending, web and mobile applications
- Specialization: Customer-centric financial platforms and digital transformation
- Industries: Banking, fintech, financial services
- Location: Los Angeles, California
Contact Information
- Website: www.netsolutions.com
- Phone: +1 (416) 720-1790
- Email: moc.snoitulosten@selas
- Address: 11601 Wilshire Blvd, 5th Floor, Los Angeles, CA 90025, USA
- LinkedIn: www.linkedin.com/company/net-solutions
- Facebook: www.facebook.com/NetSolutionsHQ
- Twitter: x.com/netsolutions
5. Intellectsoft
Intellectsoft provides software engineering for banking and financial services, including online banking platforms, mobile banking applications, banking security, UI/UX, and system integration. Its financial software work also covers blockchain, cryptocurrency, and other financial technology solutions. Intellectsoft maintains a San Francisco office.
Key Facts
- Best for: Financial companies requiring custom digital banking and financial software
- Core services: Online banking, mobile banking, system integration, financial software development
- Specialization: Custom financial platforms and enterprise software
- Industries: Fintech, banking, insurance, financial services
- Location: San Francisco, California
Contact Information
- Website: www.intellectsoft.net
- Phone: +1 (650) 233-6196
- Email: ten.tfostcelletni@ofni
- Address: 2 Embarcadero Center, 8th Floor, San Francisco, CA 94111, USA
- LinkedIn: www.linkedin.com/company/intellectsoft
- Facebook: www.facebook.com/Intellectsoft
- Twitter: x.com/Intellectsoft
6. EPAM
EPAM provides financial and banking software development for institutions ranging from fintech startups to established banks. Its banking services include core banking systems, cloud banking, mobile banking applications, payments, loan management, regulatory solutions, and custom financial platforms. The company maintains an established presence in California.
Key Facts
- Best for: Banks and financial institutions undertaking large-scale modernization
- Core services: Core banking, cloud banking, mobile banking, financial software engineering
- Specialization: Enterprise financial technology and banking transformation
- Industries: Retail banking, commercial banking, wealth management, payments, fintech
- Location: San Joce and Los Angeles, California
Contact Information
- Website: epam.com
- Phone: +1-267-759-9000
- Address: 11601 Wilshire Blvd Suite 350 Los Angeles, CA 90025, USA
- LinkedIn: www.linkedin.com/company/epam-systems
- Facebook: www.facebook.com/EPAM.Global
- Instagram: www.instagram.com/epamsystems
7. Luxoft
Luxoft works on mission-critical financial software, with services covering core banking transformation, KYC and client lifecycle management, risk and trading systems, regulatory reporting, cloud solutions, analytics, automation, and legacy modernization. Its financial practice covers retail and commercial banking, investment banking, consumer lending, corporate treasury, wealth management, and market infrastructure.
Key Facts
- Best for: Financial institutions modernizing complex or legacy technology environments
- Core services: Banking software development, core banking transformation, cloud, analytics, QA automation
- Specialization: Mission-critical financial systems
- Industries: Retail banking, investment banking, lending, wealth management, capital markets
- Location: California and other U.S. markets
Contact Information
- Website: www.luxoft.com
- Phone: 1-866-305-4050
- LinkedIn: www.linkedin.com/company/luxoft
- Facebook: www.facebook.com/Luxoft
- Twitter: x.com/Luxoft
8. Simform
Simform is a San Francisco-based software development company working with startups and enterprises across multiple industries, including fintech. Its software engineering services cover custom applications, cloud development, modernization, and product engineering. Financial-sector work includes software for business finance organizations.
Key Facts
- Best for: Fintech companies needing custom product engineering or modernization
- Core services: Custom software development, cloud, mobile applications, product engineering
- Specialization: Scalable digital products and enterprise applications
- Industries: Fintech, finance, healthcare, logistics, SaaS
- Location: San Francisco, California
Contact Information
- Website: www.simform.com
- Phone: 13212372727
- Address: 400 Executive Center Dr, Suite 208, West Palm Beach, FL 33401, USA
- LinkedIn: www.linkedin.com/company/simform
- Facebook: www.facebook.com/simform
- Twitter: x.com/simform
9. Orangesoft
Orangesoft develops fintech applications and financial software, with services spanning product development from initial concept through scale-up. Its financial development work includes fintech applications and payment processing systems designed around security, compliance, and integration requirements. The company maintains a presence in San Francisco.
Key Facts
- Best for: Fintech startups and companies launching new financial applications
- Core services: Fintech app development, payment software, product development
- Specialization: Digital financial products and payment flows
- Industries: Fintech, finance
- Location: San Francisco, California
Contact Information
- Website: orangesoft.co
- Phone: +1-424-208-02-09
- Email: oc.tfosegnaro@olleh
- Address: 580 Howard St. 94105 San Francisco, CA, USA
- LinkedIn: www.linkedin.com/company/orangesoft
- Facebook: www.facebook.com/orangesoftmobile
- Instagram: www.instagram.com/orangesoft
10. TATEEDA
TATEEDA provides fintech software development services from San Diego, working with financial businesses that need custom applications and engineering teams. Its fintech practice covers financial software development, integrations, secure application engineering, and dedicated development teams. The company works with financial technology projects while maintaining operations in San Diego, making it a relevant option for California-based banking and fintech organizations.
Key Facts
- Best for: Fintech and financial organizations needing dedicated engineering expertise
- Core services: Fintech software development, custom applications, integrations, dedicated development teams
- Specialization: Financial technology and secure software engineering
- Industries: Fintech, banking, financial services
- Location: San Diego, California
Contact Information
- Website: tateeda.com
- Phone: +1 (858) 692-0660
- Email: moc.adeetat@ofni
- Address: 7220 Trade Street, Suite 103, San Diego, CA 92121, USA
- LinkedIn: www.linkedin.com/company/tateedaglobal
- Facebook: www.facebook.com/tateedaglobal
- Instagram: www.instagram.com/tateedaglobal
- Twitter: x.com/tateedaglobal
11. Bitcot
Bitcot provides custom fintech software development for financial companies, with a focus on digital banking, digital payments, and financial applications. Its services include banking apps, digital wallets, payment solutions, and custom fintech platforms. The company has a presence in San Diego and Los Angeles, giving it a direct California footprint for financial software projects.
Key Facts
- Best for: Financial companies building digital banking and payment products
- Core services: Fintech software development, digital banking, digital payments, digital wallets
- Specialization: Custom financial applications and fintech platforms
- Industries: Fintech, banking, payments, finance
- Location: San Diego and Los Angeles, California
Contact Information
- Website: www.bitcot.com
- Phone: +1858-683-3692
- Address: 16870 W Bernardo Dr #400, San Diego, CA 92127, USA
- Email: moc.toctib@troppus
- LinkedIn: www.linkedin.com/company/bitcot
- Facebook: www.facebook.com/bitcot
- Twitter: x.com/bitcot
12. DigiNeat Smart Technologies
DigiNeat is a Los Angeles-based software engineering company focused on demanding technology environments, including fintech, banking, and trading. Its work covers end-to-end digital product engineering, from architecture and application development to long-term operation. The company supports infrastructure for regulated financial businesses and multi-jurisdiction financial operations.
Key Facts
- Best for: Fintech and banking companies with regulated software environments
- Core services: Digital product engineering, web and mobile development, backend systems
- Specialization: Regulated financial and trading technology
- Industries: Banking, fintech, trading, telecom
- Location: Los Angeles, California
Contact Information
- Website: digineat.com
- Phone: 1-800-993-1724
- Email: moc.taenigid@ofni
- Address: 1801 Century Park East, Los Angeles, CA 90067, USA
- LinkedIn: www.linkedin.com/company/digineat
- Facebook: www.facebook.com/p/DigiNeat-100063634393713
- Twitter: x.com/NeatDigi
13. Trantor
Trantor provides fintech software development services for financial businesses, including applications that support payments, financial transactions, and other digital finance workflows. Its fintech practice covers financial application development and custom software engineering. The company maintains a Palo Alto office.
Key Facts
- Best for: Fintech companies developing custom financial applications
- Core services: Fintech software development, financial applications, mobile solutions
- Specialization: Digital financial products
- Industries: Fintech and financial services
- Location: Palo Alto, California
Contact Information
- Website: trantorinc.com
- Phone: +1 (650) 646 7818
- Email: moc.cnirotnart@ofni
- Address: 2479 E Bayshore Rd, Suite 200, Palo Alto, CA 94303, USA
- LinkedIn: www.linkedin.com/company/trantor
- Facebook: www.facebook.com/Trantorinc
- Twitter: x.com/TrantorInc
14. Crea
Crea is a San Jose software development company with capabilities across fintech, DeFi, blockchain, SaaS, and other technology sectors. Its engineering services include web and mobile application development, product development, custom software, and API development and integration. For financial technology projects, these capabilities support digital finance products that depend on application and integration work.
Key Facts
- Best for: Fintech companies building custom web, mobile, and API-driven products
- Core services: Custom software, web and mobile development, APIs, product development
- Specialization: Fintech and DeFi product engineering
- Industries: Fintech, DeFi, blockchain, SaaS
- Location: San Jose, California
Contact Information
- Website: creainc.us
- Address: 2880 Zanker Rd Suite 203, San Jose, CA 95134, USA
- LinkedIn: www.linkedin.com/company/creainc
Conclusion
A strong banking software development partner should match the institution’s technology needs, financial domain requirements, project scope, and location. The companies on this list cover areas such as digital banking, core banking, payments, lending, fintech applications, and financial system modernization. Comparing their relevant expertise, service scope, and California presence can help banks and financial businesses narrow the field to a development team that fits their specific project.