Banks, fintech companies, lenders, and other financial institutions need software partners that understand both complex engineering and the operational demands of financial services. The companies below work across areas such as digital banking, core banking modernization, payments, lending, open banking, cloud migration, customer onboarding, and financial application development.
1. Itexus
Itexus develops custom software for banks, fintech companies, lenders, investment firms, and other financial services organizations in Australia. Its banking work covers mobile and online banking platforms, digital onboarding, KYC automation, lending, payments, wallets, card management, open banking integrations, fraud monitoring, and core banking modernization.
The company also handles complex integrations with payment providers, KYC and AML services, banking cores, credit data providers, and other financial infrastructure. Itexus has delivered more than 300 fintech projects and serves clients in 23 countries, including Australia. Its capabilities extend from discovery and architecture through development, QA, DevOps, cybersecurity, and ongoing support.
Key Facts
- Best for: Banks and fintech companies developing complex financial platforms
- Core services: Banking software development, fintech app development, system modernization, integrations, QA, DevOps
- Banking capabilities: Digital banking, lending, payments, wallets, onboarding, open banking, core banking integration
- Technologies: Java, .NET, TypeScript, Python, React, Angular, Flutter, React Native, Swift, Kotlin
- Market coverage: Australia and other international markets
- Fintech experience: 300+ projects
Contact Information
- Website: itexus.com
- E-mail: moc.suxeti@ofni
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: 8, The Green, STE road, Dover, DE 19901
2. Sandstone Technology
Sandstone Technology develops banking platforms specifically for financial institutions. Its product ecosystem covers digital banking, loan origination, digital origination, mobile banking, and customer-facing digital channels.
The company has worked with Australian financial institutions including Great Southern Bank, Bendigo and Adelaide Bank, Auswide Bank, and IMB. Its BankFast platform supports mobile and web banking, integration with core systems, assisted and self-service channels, multifactor authentication, and fraud monitoring integrations. Sandstone is particularly suited to established banks and lenders that want banking-specific technology rather than general-purpose software development.
Key Facts
- Best for: Banks modernizing digital channels and lending systems
- Core services: Digital banking, loan origination, digital origination, mobile banking
- Specialization: Banking technology
- Platform: BankFast
Contact Information
- Website: www.sandstonetechnology.com
- E-mail: ua.moc.enotsdnas@ofni
- Twitter: x.com/SandstoneTech
- LinkedIn: www.linkedin.com/company/sandstone-technology
- Address: Level 1, 182-186 Blues Point Rd, McMahons Point, NSW 2060, Australia
3. Data Action
Data Action, also known as DA, provides banking software and managed technology services to Australian financial institutions. The company supports customer-owned banks, credit unions, challenger banks, neobanks, and other financial services organizations.
Its technology portfolio covers core banking, digital banking, data, payments, integrations, and infrastructure. DA Digital Solutions can integrate with different core banking systems, allowing institutions to modernize mobile and web experiences without necessarily replacing their existing core. Founded in Adelaide in 1986, Data Action operates nationally with teams in several Australian cities.
Key Facts
- Best for: Customer-owned and challenger banks in Australia
- Core services: Core banking, digital banking, payments, data, integrations, infrastructure
- Specialization: Banking technology and managed services
- Clients: Banks, credit unions, neobanks, financial services organizations
- Founded: 1986
- Location: Australia
Contact Information
- Website: www.da.com.au
- LinkedIn: www.linkedin.com/company/data-action
- Address: Level 10, 580 George Street, Sydney NSW 2000
- Phone: 08 8201 1000
4. EB Pearls
Sydney-based EB Pearls develops fintech and financial software for regulated businesses, startups, scale-ups, and enterprises. Its fintech work includes payment platforms, lending systems, embedded finance products, digital onboarding, AML and KYC workflows, and open banking integrations.
The company has worked on financial products for organizations including Plenti and Rello. Its fintech engineering approach considers Australian requirements such as AFSL obligations, AML and KYC processes, open banking, data residency, and security controls. EB Pearls is ISO 27001 certified and can handle both new product development and modernization of existing financial platforms.
Key Facts
- Best for: Fintech startups and regulated financial businesses
- Core services: Fintech software, mobile apps, web platforms, product engineering
- Financial capabilities: Payments, lending, embedded finance, open banking, KYC and AML
- Certifications: ISO 27001
- Location: Sydney, NSW, Australia
- Experience: 20+ years
Contact Information
- Website: ebpearls.com.au
- Facebook: www.facebook.com/ebPearlsPtyLtd
- Twitter: x.com/ebpearls
- LinkedIn: www.linkedin.com/company/eb-pearls
- Instagram: www.instagram.com/ebpearlsweb
- Phone: 02 4005 0322
- Address: Suite 1A7, 410 Elizabeth Street, Surry Hills, NSW 2010, Australia
5. Appello Software
Appello Software develops custom financial applications from its Australian operations. Its finance development services cover customer onboarding, KYC, payments, portfolio interfaces, banking system integrations, financial workflows, and real-time analytics.
The company handles the software lifecycle from discovery and solution architecture through UX design, development, QA automation, DevSecOps, and post-launch support. Appello also works with cloud-native architectures and APIs for connecting new financial products with existing systems. Its Australian service coverage includes Sydney, Melbourne, Brisbane, Perth, and the Gold Coast.
Key Facts
- Best for: Financial businesses building custom web and mobile products
- Core services: Software development, mobile development, web development, UX/UI, project support
- Financial capabilities: KYC, payments, analytics, banking integrations
- Development model: End-to-end product development
- Location: Australia
- Australian presence: Sydney and service coverage across major cities
Contact Information
- Website: appello.com.au
- Email: ua.moc.olleppa@olleh
- Facebook: www.facebook.com/appellosoftware
- LinkedIn: www.linkedin.com/company/appello-software
- Instagram: www.instagram.com/appello\_software
- Phone: +61 2 7202 5164
6. Constantinople
Constantinople develops an integrated banking platform for financial institutions. Its technology combines banking products, customer experiences, data, operational processes, compliance capabilities, APIs, and software infrastructure within one environment.
Banks can use ready-made mobile and web applications or connect through APIs and SDKs for more customized deployments. The platform supports retail banking, business banking, embedded banking, migrations, and new banking propositions. Constantinople works with Australian financial institutions and payments companies, including Great Southern Bank and Tyro.
Key Facts
- Best for: Banks launching or replacing major banking platforms
- Core services: Banking platform technology, digital banking, APIs, migration
- Banking segments: Retail banking, business banking, embedded banking
- Customer channels: Mobile, web, APIs and SDKs
- Specialization: Integrated banking infrastructure
- Location: Australia
Contact Information
- Website: www.cxnpl.com
- LinkedIn: www.linkedin.com/company/cxnplio
- Address: Level 4/727, George Street, Sydney, New South Wales 2000, Australia
7. Thoughtworks
Thoughtworks provides software engineering and technology modernization services to banks and other financial institutions. Its banking practice works across omnichannel platforms, digital lending, core banking modernization, payments, cloud transformation, application modernization, and platform engineering.
The company has experience helping banks restructure legacy systems, develop new digital services, modernize lending platforms, and improve software delivery. Its broader financial services work also covers payments, wealth management, data engineering, AI, and engineering effectiveness. Thoughtworks operates in Australia and provides local financial services and software engineering capabilities.
Key Facts
- Best for: Large banking modernization and software engineering programs
- Core services: Software engineering, platform development, modernization, data and AI
- Banking capabilities: Core modernization, digital lending, omnichannel banking, payments
- Client types: Banks, fintech companies, financial institutions
- Location: Australia and global markets
- Development focus: Complex enterprise platforms
Contact Information
- Website: www.thoughtworks.com
- E-mail: moc.skrowthguoht@ua-tcatnoc
- Facebook: www.facebook.com/Thoughtworks
- Twitter: x.com/thoughtworks
- LinkedIn: www.linkedin.com/company/thoughtworks
- Instagram: www.instagram.com/thoughtworks
- Address: Land of the Turrbal and Jagera/Yuggera Peoples, Level 3, 300 Adelaide Street, Brisbane City QLD 4000
8. Adactin
Adactin provides digital engineering, software development, testing, automation, cloud, and technology transformation services from its Australian operations. Its banking and financial services practice covers core banking solutions, customer onboarding, deposits and withdrawals, transaction management, risk, compliance, and cross-channel technology.
The company is Australian owned and operates offices in Sydney, Melbourne, and Canberra. Its combination of engineering and quality assurance capabilities can be useful for financial institutions that need both software delivery and extensive testing around business-critical systems.
Key Facts
- Best for: Banking development, modernization, and QA programs
- Core services: Digital engineering, software development, QA, automation, cloud
- Banking capabilities: Core banking, transactions, onboarding, risk and compliance
- Location: Sydney, Melbourne, and Canberra
- Ownership: Australian owned
- Technology ecosystems: Microsoft and AWS
Contact Information
- Website: www.adactin.com
- E-mail: moc.nitcada@ofni
- Facebook: www.facebook.com/AdactinGroup
- LinkedIn: www.linkedin.com/company/adactingroup
- Instagram: www.instagram.com/adactingroup
- Phone: 1300 232 286
- Address: Suite 10.03, Level 10, 20 Hunter Street, Sydney, NSW 2000, Australia
9. Capgemini
Capgemini works with banks on core banking transformation, open banking, payments, lending, cloud migration, application modernization, and customer-facing financial systems. Its core banking practice supports both platform implementations and development of customized banking solutions.
The company works with systems including Temenos Transact, Oracle FLEXCUBE, FIS Modern Banking Platform, Finacle, and Mambu. Services cover technology architecture, integration, data migration, testing, cloud deployment, and modernization of existing platforms. Its Australian banking practice makes it more suitable for complex enterprise programs than smaller standalone app projects.
Key Facts
- Best for: Enterprise core banking and digital transformation
- Core services: Banking technology consulting, software development, integration, cloud
- Banking capabilities: Core systems, payments, lending, open banking, financial crime
- Platforms: Temenos, Oracle FLEXCUBE, FIS, Finacle, Mambu
- Location: Australia and global markets
- Client type: Banks and large financial institutions
Contact Information
- Website: www.capgemini.com
- Facebook: www.facebook.com/Capgemini
- LinkedIn: www.linkedin.com/company/capgemini
- Instagram: www.instagram.com/capgemini
- Address: Level 2, 34-36 James Craig Road, Glebe Island,Sydney, New South Wales 2039
- Phone: +61 2 7227 0607
10. Accenture
Accenture combines banking consulting with technology implementation and software engineering. Its banking work covers core modernization, payments, lending, risk and compliance, cloud, data platforms, AI, customer experience, and automation.
For institutions dealing with large legacy estates, Accenture can support architecture planning, system implementation, integration, development, testing, and operational transformation. Its teams also work with established banking platforms including Temenos, Avaloq, Finacle, Oracle FLEXCUBE, TCS BaNCS, Mambu, FIS, and Finastra products.
Key Facts
- Best for: Large banks with multi-year transformation programs
- Core services: Technology engineering, consulting, cloud, data and AI
- Banking capabilities: Core banking, payments, lending, risk, compliance
- Platform experience: Temenos, Avaloq, Finacle, FLEXCUBE, BaNCS, Mambu
- Location: Australia and global markets
- Project type: Enterprise banking transformation
Contact Information
- Website: accenture.com
- Address: Level 1, 30 Pirie Street Adelaide, SA 5000 Australia
- Phone: +61881311000
11. Cognizant
Cognizant works with banking and financial services organizations on software modernization, payments, testing, automation, data integration, and financial technology transformation. Its Australian financial services practice addresses areas such as banking platforms, payment systems, software quality, and the modernization of legacy environments.
The company also provides full-lifecycle testing and automation services, which can be particularly useful for banking systems where releases must undergo extensive functional, integration, security, and regression testing. Cognizant suits organizations that need large engineering teams and ongoing technology transformation support.
Key Facts
- Best for: Enterprise financial software engineering and quality assurance
- Core services: Software engineering, modernization, testing, data and automation
- Banking capabilities: Payments, banking systems, platform modernization
- Specialization: Large-scale technology transformation
- Location: Australia and international markets
- Client type: Banks and financial services enterprises
Contact Information
- Website: www.cognizant.com
- E-mail: moc.tnazingoc@yriuqni
- Facebook: www.facebook.com/Cognizant
- Twitter: x.com/cognizant
- LinkedIn: www.linkedin.com/company/cognizant
- Instagram: www.instagram.com/cognizant
- Address: Level 37, International, Tower 2, 200 Barangaroo Ave, Sydney NSW 2000, Australia
- Phone: +61 2 9223 3988
12. Infosys
Infosys provides core and digital banking technology used by financial institutions in Australia and worldwide. Its platform covers core banking, digital engagement, mobile and online banking, lending, payments, cash management, wealth management, treasury, analytics, and related banking operations.
Finacle has continued expanding its Australian deployments. Bank of Sydney selected the Finacle Digital Banking Suite for core and digital transformation, while Uniting Financial Services implemented Finacle SaaS on AWS. The Australian Reference Bank Model provides preconfigured products, processes, interfaces, and compliance capabilities for the local banking market.
Key Facts
- Best for: Banks replacing or modernizing core banking platforms
- Core services: Core banking, digital banking, lending, payments, SaaS
- Platform: Finacle
- Deployment options: Cloud and SaaS
- Australian capability: Finacle Australian Reference Bank Model
- Client type: Banks, credit unions and financial institutions
Contact Information
- Website: www.infosys.com
- E-mail: moc.sysofni@suksa
- Facebook: www.facebook.com/Infosys
- Twitter: x.com/infosys
- LinkedIn: www.linkedin.com/company/infosys
- Address: Level 3, 100 Arthur Street, North Sydney 2060, NSW, Australia
- Phone: +61 2 8912 1500
13. TCS
TCS BaNCS is the financial services software platform developed by Tata Consultancy Services. It supports banking, payments, securities, insurance, and other financial operations through a broad set of applications and SaaS offerings.
TCS BaNCS has an established connection with the Australian banking market and continues to participate in the country's financial technology sector. Its banking technology is designed for institutions dealing with core processing, digital transformation, payments, and complex back-office operations. The platform is particularly relevant to banks looking for a large enterprise technology vendor with banking-specific software and implementation resources.
Key Facts
- Best for: Core banking and enterprise financial systems
- Core services: Banking software, payments, financial services platforms
- Platform: TCS BaNCS
- Delivery: Software and SaaS
- Market presence: Australia and international banking markets
- Parent company: Tata Consultancy Services
Contact Information
- Website: www.tcs.com
- E-mail: moc.sct@gnitekram.zna
- Facebook: www.facebook.com/TataConsultancyServices
- Twitter: x.com/TCS
- LinkedIn: www.linkedin.com/company/tata-consultancy-services
- Instagram: www.instagram.com/tcsglobal
- Address: Level 6, 76 Berry Street, North Sydney, New South Wales - 2060
- Phone: +61-2-8456-2899
Conclusion
Australia's banking technology market includes specialist banking platform vendors, local software engineering firms, fintech developers, and global technology consultancies. The right choice depends heavily on the project itself. Core replacement programs require different capabilities from mobile banking apps, open banking integrations, lending platforms, or modernization of individual services.
Itexus is particularly suited to custom banking and fintech products that involve complex integrations, regulated workflows, mobile and web development, legacy modernization, and ongoing engineering.