Sioux Falls has a strong financial services ecosystem, creating demand for secure banking platforms, payment infrastructure, digital banking applications, and compliant enterprise software. The companies below include Sioux Falls-based technology providers as well as established development firms that serve the market remotely, with experience relevant to banking and financial services.
1. Itexus
Itexus develops software for banking, fintech, payments, lending, trading, and wealth management. Its banking work includes mobile and online banking applications, digital account opening, KYC automation, lending systems, payment infrastructure, card management, fraud monitoring, and core banking integration. The company serves banks, brokers, fintech companies, and other financial services organizations across North America and other markets.
Key Facts
- Best for: Banks, fintech companies, and financial services organizations building or modernizing digital products
- Core services: Banking software development, fintech app development, custom software, AI, DevOps, QA
- Specialization: Digital banking, payments, lending, trading, wealth management
- Industries: Banking, fintech, financial services
- Location: United States headquarters, development offices in Europe
- Notable strength: 300+ fintech projects and dedicated banking software expertise
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. Simform
Simform is a full-stack software development company serving Sioux Falls with custom software, cloud, enterprise modernization, mobile development, and AI services. Its industry experience includes financial services alongside custom software development capabilities.
For banking teams with broader technology requirements, Simform can support projects that combine application development with cloud infrastructure, modernization, and enterprise integration.
Key Facts
- Best for: Enterprise software and modernization projects
- Core services: Custom software, cloud consulting, mobile development, AI, modernization
- Specialization: Full-stack and enterprise engineering
- Industries: Financial services, healthcare, technology, and other sectors
- Location: Serves Sioux Falls, SD
- Notable strength: Combination of software development and cloud capabilities
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
3. Gaper
Gaper provides software development teams to businesses in Sioux Falls, with specific coverage for fintech and banking projects. Its Sioux Falls offering highlights developers with experience in financial compliance, data security, payment processing, and banking workflows.
The model is different from a traditional local software agency. Gaper focuses on matching businesses with pre-vetted developers and development teams, which can suit financial organizations that need to expand engineering capacity.
Key Facts
- Best for: Flexible engineering capacity and fintech development teams
- Core services: Software development, developer staffing, AI-assisted delivery
- Specialization: Fintech and banking development resources
- Industries: Financial services, healthcare, agriculture, e-commerce
- Location: Serves Sioux Falls, SD
- Notable strength: Access to specialized fintech developers
Contact Information
- Website: gaper.io
4. Devsdom
Devsdom provides cloud-native development services for Sioux Falls businesses and identifies fintech among its core industries. Its development approach includes cloud architecture, containers, microservices, event-driven systems, testing, security audits, and ongoing support.
This is most relevant for financial organizations modernizing infrastructure or building new banking applications that need scalable cloud architecture rather than a conventional website or basic business application.
Key Facts
- Best for: Cloud-native financial software projects
- Core services: Cloud-native development, software engineering, DevOps, modernization
- Specialization: Cloud architecture and distributed systems
- Industries: Fintech, healthcare IT, SaaS, enterprise software
- Location: Serves Sioux Falls, SD
- Notable strength: Cloud-native architecture for financial technology
Contact Information
- Website: devsdom.com
- Email: moc.modsved@olleh
- LinkedIn: www.linkedin.com/company/devsdom
5. EPAM
EPAM provides financial and banking software development services covering core banking, digital banking, cloud banking, lending, investment management, open banking, payments, and insurance. Its banking capabilities include custom software development, mobile banking applications, integrations, and regulatory-focused solutions.
EPAM is more relevant to large or technically complex financial organizations than smaller businesses looking for a straightforward application project. Its scale and banking specialization make it suitable for enterprise modernization and major platform initiatives.
Key Facts
- Best for: Enterprise banking transformation and large financial platforms
- Core services: Banking software, core banking, cloud banking, mobile banking, payments
- Specialization: Enterprise financial software engineering
- Industries: Banking, financial services, insurance, investment management
- Location: Serves U.S. financial organizations
- Notable strength: Broad banking software capabilities and large engineering capacity
Contact Information
- Website: www.epam.com
- Phone: +1-267-759-9000
- Address: 41 University Drive, Suite 202, Newtown, PA 18940, USA
- LinkedIn: www.linkedin.com/company/epam-systems
- Facebook: www.facebook.com/EPAM.Global
- Instagram: www.instagram.com/epamsystems
6. ELEKS
ELEKS develops custom banking software and fintech solutions for financial organizations. Its banking services cover tailored financial platforms, transaction workflows, data-driven applications, security, and customer-facing experiences. The company also combines software engineering with data science and AI capabilities for financial services.
For Sioux Falls organizations considering a larger external engineering partner, ELEKS can fit projects that require custom financial applications, data-intensive systems, or modernization beyond a single banking application.
Key Facts
- Best for: Custom banking platforms and complex fintech systems
- Core services: Banking software development, fintech solutions, data and AI engineering
- Specialization: Data-driven financial applications
- Industries: Banking, financial services, fintech
- Location: Serves U.S. financial organizations
- Notable strength: Combination of banking software, data science, and AI capabilities
Contact Information
- Website: eleks.com
- Phone: +1-708-967-4803
- Address: 625 W. Adams St., Chicago, IL 60661, USA
- LinkedIn: www.linkedin.com/company/eleks
- Facebook: www.facebook.com/ELEKS.Software
- Twitter: x.com/ELEKSSoftware
7. Blend Interactive
Blend Interactive is a Sioux Falls-based digital agency that provides web strategy, design, development, and implementation services, with a dedicated focus on financial services. Its financial services work includes websites and digital experiences for banks, credit unions, and other financial organizations. The company also develops integrations with banking systems, rate feeds, branch locators, CRM platforms, and member management tools. Its portfolio includes projects for financial institutions such as Gate City Bank and SELCO Community Credit Union.
Key Facts
- Best for: Banks, credit unions, and financial services organizations
- Core services: Web development, digital strategy, design, platform implementation, banking integrations
- Specialization: Financial services websites and digital platforms
- Industries: Banking, credit unions, financial services, healthcare, associations
- Location: Sioux Falls, SD
- Notable strength: Dedicated financial services practice with banking system integration experience
Contact Information
- Website: www.blendinteractive.com
- Email: moc.evitcaretnidnelb@olleh
- Phone: (605) 334-7077
- Address: 231 S. Phillips Ave, Suite 200, Sioux Falls, SD 57104
- LinkedIn: www.linkedin.com/company/blend-interactive
- Facebook: www.facebook.com/blendinteractive
- Instagram: www.instagram.com/blendinteractive
8. Next Level Technology
Next Level Technology is a Sioux Falls-based IT and software development company serving businesses with custom technology solutions. Its services include custom software development, cloud hosting, networking, cybersecurity, and managed IT services. The company develops customized applications around individual business processes, making it relevant to organizations that need software development alongside local IT infrastructure and security support.
Key Facts
- Best for: Local businesses needing custom software and IT services
- Core services: Custom software development, cloud hosting, IT services, security, networking
- Specialization: Custom business software and managed IT
- Industries: Business and professional services
- Location: Sioux Falls, SD
- Notable strength: Combination of custom software development and local IT infrastructure services
Contact Information
- Website: nltsf.com
9. FIS
FIS provides banking software and financial technology for banks, credit unions, and other financial institutions. Its portfolio includes core banking systems, digital banking platforms, account origination, lending, payments, and banking APIs. Products such as FIS HORIZON, Integrated Banking Solution, Digital One, and Modern Banking Platform support core processing and digital banking operations across retail and commercial financial services. FIS also has a documented connection to Sioux Falls through its banking software operations and the integration of Precision Computer Systems, whose teams continued developing banking technology in the city.
Key Facts
- Best for: Banks, credit unions, and financial institutions modernizing core and digital banking systems
- Core services: Core banking software, digital banking, account origination, lending, payments, banking APIs
- Specialization: Banking platforms and financial technology
- Industries: Banking, credit unions, financial services, fintech
- Location: Sioux Falls, SD presence documented through FIS banking software operations
- Notable strength: Broad portfolio of core banking and digital banking platforms
Contact Information
- Website: www.fisglobal.com
- Address: 347 Riverside Ave., Jacksonville, FL, United States
- LinkedIn: www.linkedin.com/company/fis
- Facebook: www.facebook.com/FIStoday
- Twitter: x.com/fisglobal
10. MANTL
MANTL, an Alkami solution team, provides account origination technology for banks and credit unions. Its software covers deposit account opening and loan origination across digital, branch, and other banking channels, with integrations that support automated decisioning, onboarding, and core banking workflows. MANTL has a direct connection to Sioux Falls through First PREMIER Bank, a community bank headquartered in Sioux Falls that uses MANTL for digital account opening.
Key Facts
- Best for: Banks and credit unions modernizing account opening and lending workflows
- Core services: Deposit account opening, loan origination, onboarding, banking integrations
- Specialization: Account origination technology for financial institutions
- Industries: Banking, credit unions, financial services
- Location: United States, with a documented banking client in Sioux Falls, SD
- Notable strength: Banking-specific software for retail and business account opening and loan origination
Contact Information
- Website: www.mantl.com
- LinkedIn: www.linkedin.com/company/mantl
- Facebook: www.facebook.com/mantltech
- Twitter: x.com/Mantl\_tech
Conclusion
The right banking software development partner depends on the institution's technical requirements, project scope, and need for financial industry expertise. Sioux Falls businesses can choose from local technology providers, payment specialists, and larger development companies with experience in digital banking, fintech, core banking integration, cloud modernization, and custom financial applications. For complex banking projects that require dedicated external engineering expertise, Itexus offers experience across digital banking, payments, lending, and other financial technology areas.