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 builds software for banking, fintech, payments, lending, trading, and wealth management. Its banking work includes mobile and online banking apps, digital account opening, KYC automation, and lending systems. It also builds payment infrastructure, card management, fraud monitoring, and core banking integration. Clients include banks, brokers, fintech companies, and other financial firms in 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. It offers custom software, cloud, enterprise modernization, mobile development, and AI services. Financial services is one of the industries it works in.
Banking teams with wider technology needs can use Simform for projects that mix app 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 supplies software development teams to Sioux Falls businesses, including for fintech and banking projects. Its developers know financial compliance, data security, payment processing, and banking workflows.
Gaper is not a traditional local agency. It matches businesses with pre-vetted developers and teams, which helps financial organizations that need more 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 for Sioux Falls businesses, and fintech is one of its core industries. Its work includes cloud architecture, containers, microservices, and event-driven systems, along with testing, security audits, and ongoing support.
Devsdom fits financial organizations that are modernizing infrastructure or building new banking apps on scalable cloud architecture. It is less about conventional websites or basic business apps.
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 builds financial and banking software across core banking, digital banking, cloud banking, lending, and investment management. It also covers open banking, payments, and insurance. Its banking work includes custom software, mobile banking apps, integrations, and regulatory solutions.
EPAM fits large or technically complex financial organizations better than small businesses with a simple app project. Its size and banking focus suit enterprise modernization and major platform programs.
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 builds custom banking software and fintech solutions for financial organizations. Its banking services cover financial platforms, transaction workflows, data-driven applications, security, and customer-facing experiences. It pairs software engineering with data science and AI for financial services.
Sioux Falls organizations looking for a larger outside engineering partner can turn to ELEKS. It fits custom financial apps, data-heavy systems, or modernization that goes 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 digital agency for web strategy, design, development, and implementation, with a dedicated financial services practice. It builds websites and digital experiences for banks, credit unions, and other financial organizations. It also builds integrations with banking systems, rate feeds, branch locators, CRM platforms, and member management tools. Clients include 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 IT and software development company. It offers custom software development, cloud hosting, networking, cybersecurity, and managed IT services. Its custom applications are built around each client's business processes. It suits organizations that want software development plus local IT infrastructure and security support from one firm.
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 to banks, credit unions, and other financial institutions. Its products cover core banking, digital banking, account origination, lending, payments, and banking APIs. FIS HORIZON, Integrated Banking Solution, Digital One, and Modern Banking Platform run core processing and digital banking for retail and commercial clients. FIS has roots in Sioux Falls through its banking software operations. It took over Precision Computer Systems, whose teams kept building 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, builds account origination technology for banks and credit unions. Its software handles deposit account opening and loan origination online, in branches, and in other channels. Integrations support automated decisioning, onboarding, and core banking workflows. MANTL has a direct Sioux Falls link: First PREMIER Bank, a community bank headquartered there, uses it 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.