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 builds custom software for banks, fintech companies, lenders, investment firms, and other financial firms in Australia. It builds mobile and online banking, digital onboarding, KYC automation, lending, payments, and wallets. It also covers card management, open banking integrations, fraud monitoring, and core banking modernization.
The team connects products to payment providers, KYC and AML services, banking cores, and credit data providers. Itexus has delivered more than 300 fintech projects for clients in 23 countries, including Australia. It can run a project 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 builds banking platforms for financial institutions. Its products cover digital banking, loan origination, digital origination, mobile banking, and customer-facing digital channels.
Its Australian clients include Great Southern Bank, Bendigo and Adelaide Bank, Auswide Bank, and IMB. The BankFast platform runs mobile and web banking and connects to core systems. It supports assisted and self-service channels, multifactor authentication, and fraud monitoring integrations. Sandstone fits established banks and lenders that want banking-specific technology, not general 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. Its clients include customer-owned banks, credit unions, challenger banks, neobanks, and other financial services organizations.
DA works on core banking, digital banking, data, payments, integrations, and infrastructure. DA Digital Solutions can connect to different core banking systems. That lets an institution renew its mobile and web banking without replacing its core. Data Action was founded in Adelaide in 1986 and has 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 builds fintech and financial software for regulated businesses, startups, scale-ups, and enterprises. It builds payment platforms, lending systems, embedded finance products, and digital onboarding. It also handles AML and KYC workflows and open banking integrations.
Its financial clients include Plenti and Rello. The team designs for Australian rules such as AFSL obligations, AML and KYC processes, open banking, and data residency, along with security controls. EB Pearls is ISO 27001 certified. It takes on both new products and the 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 builds custom financial applications from its Australian operations. Its finance work covers customer onboarding, KYC, payments, portfolio interfaces, and banking system integrations. It also builds financial workflows and real-time analytics.
Appello runs the whole project, from discovery and solution architecture to UX design, development, QA automation, DevSecOps, and post-launch support. It uses cloud-native architectures and APIs to connect new financial products with existing systems. It serves clients in 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 builds an integrated banking platform for financial institutions. It puts banking products, customer experiences, data, operations, compliance, APIs, and infrastructure in one environment.
Banks can use its ready-made mobile and web apps, or connect through APIs and SDKs for a more customized setup. The platform supports retail, business, and embedded banking, migrations, and new banking products. Constantinople works with Australian banks 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 modernization services to banks and other financial institutions. Its banking team works on omnichannel platforms, digital lending, core banking modernization, and payments. It also handles cloud transformation, application modernization, and platform engineering.
Thoughtworks has helped banks restructure legacy systems, launch new digital services, update lending platforms, and ship software faster. Its wider financial work covers payments, wealth management, data engineering, AI, and engineering effectiveness. The company has a local financial services and engineering team in Australia.
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 transformation services from its Australian operations. Its banking team covers core banking, customer onboarding, deposits and withdrawals, and transaction management. It also works on risk, compliance, and cross-channel technology.
Adactin is Australian owned and has offices in Sydney, Melbourne, and Canberra. It combines engineering with quality assurance. That helps financial institutions that need both software delivery and heavy testing of 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, and cloud migration. It also modernizes applications and customer-facing financial systems. Its core banking team both implements platforms and builds customized banking solutions.
Capgemini works with Temenos Transact, Oracle FLEXCUBE, FIS Modern Banking Platform, Finacle, and Mambu. It handles architecture, integration, data migration, testing, cloud deployment, and modernization of existing platforms. Its Australian banking team is a better fit for complex enterprise programs than for small standalone apps.
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 pairs banking consulting with technology implementation and software engineering. Its banking work covers core modernization, payments, lending, risk and compliance, and cloud. It also works on data platforms, AI, customer experience, and automation.
Banks with large legacy estates can use Accenture for architecture planning, implementation, integration, development, and testing. It also supports operational transformation. Its teams know 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 helps banks and financial firms modernize software, payments, testing, automation, and data integration. Its Australian financial services team works on banking platforms, payment systems, software quality, and legacy modernization.
Cognizant also tests and automates across the full lifecycle. That matters for banking systems, where each release needs functional, integration, security, and regression testing. Cognizant fits organizations that need large engineering teams and ongoing 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 to financial institutions in Australia and worldwide. Its platform covers core banking, mobile and online banking, digital engagement, lending, and payments. It also handles cash management, wealth management, treasury, and analytics.
Finacle keeps adding Australian deployments. Bank of Sydney chose the Finacle Digital Banking Suite for its core and digital transformation. Uniting Financial Services runs Finacle SaaS on AWS. The Australian Reference Bank Model ships with preconfigured products, processes, interfaces, and compliance features for the local 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 platform built by Tata Consultancy Services. Its applications and SaaS offerings support banking, payments, securities, insurance, and other financial operations.
TCS BaNCS has a long presence in Australian banking and is still active in the local fintech sector. It is built for core processing, digital transformation, payments, and complex back-office work. Banks that want a large enterprise vendor with banking software and implementation teams should look at it.
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.