Sydney businesses planning financial software can choose from local product teams, providers with Australian operations, and international fintech specialists. The right shortlist depends on what needs building: a customer app, a lending workflow, a payment platform, or the systems behind an established financial institution. These companies cover different parts of that work, with services ranging from product discovery and custom development to integration, testing, and ongoing support.
1. Itexus
Itexus develops software for banking, trading, wealth management, lending, and insurance. It is an international provider with offices in the United States and Poland, giving Sydney businesses an overseas option to consider alongside Australian teams. Its work includes customer applications and the backend systems that connect them to payment services, brokers, identity verification providers, and financial data feeds.
For existing products, Itexus offers code audits, project recovery, and gradual legacy modernisation. New builds can start with discovery, architecture, and interface design, followed by development, testing, deployment, and production support. Its portfolio includes a digital wallet ecosystem for Coinstar and wealth management software.
Key Facts
- Core services: Fintech software development, product discovery, UI/UX design, quality assurance, and maintenance.
- Focus: Custom financial products and complex financial system integrations.
- Project types: Banking apps, digital wallets, trading platforms, and investment systems.
- Location: United States and Poland; international delivery.
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-fintech-software
- Instagram: www.instagram.com/itexus.soft
- Address: 8, The Green, STE road, Dover, DE 19901
2. EB Pearls
EB Pearls combines a Sydney headquarters with international engineering teams. Its fintech work includes payment infrastructure integrations, merchant interfaces, transaction reporting, and financial workflows. The company has worked on Rello, a real estate payment and finance platform, and custom tools connected to Nuvei's payment infrastructure.
Its delivery model brings engineering management, business analysis, and account management into the project. That structure is relevant for funded startups developing their first financial product and established businesses replacing an older platform. EB Pearls also handles mobile applications, cloud infrastructure, and ongoing product development, allowing the engagement to continue after launch.
Key Facts
- Core services: Fintech applications, payment integrations, product development, and cloud engineering.
- Relevant experience: Rello and Nuvei-related payment tooling.
- Client types: Funded startups, scale-ups, and established financial businesses.
- Location: Surry Hills, Sydney.
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
- Address: Suite 1A7, 410 Elizabeth Street, Surry Hills, NSW 2010, Australia
- Phone: 02 4005 0322
3. Appello Software
Appello Software develops mobile and web finance products and offers software development services in Sydney. Its financial services work covers banking applications, payment gateways, lending platforms, trading tools, and regulatory technology. Product strategy and interface design sit alongside development, so teams can work through requirements before committing to a full build.
The company also connects applications to core banking systems through APIs and builds analytics and automated workflows around them. Its portfolio includes Advix, a mobile investment product. After release, Appello provides technical maintenance and monitoring, with support covering the application and its cloud environment.
Key Facts
- Core services: Digital advisory, product design, software development, and project support.
- Project types: Mobile banking, lending, payments, and investment applications.
- Relevant portfolio: Advix investment app.
- Market coverage: Sydney software development services.
Contact Information
- Website: appello.com.au
- E-mail: 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
4. EPAM
EPAM works with banks, payment providers, wealth managers, and financial technology businesses. With a Sydney office and a wider international delivery organisation, it brings software engineering into projects that may also require cloud migration, data work, and changes to existing enterprise systems.
Its capabilities include product and platform development, API integration, quality engineering, and modernisation. The financial services practice covers retail and commercial banking, capital markets, wealth management, and open banking. This breadth is useful when a new customer-facing product depends on several internal platforms, rather than operating as a standalone application.
Key Facts
- Core services: Platform development, systems integration, cloud engineering, and software testing.
- Financial sectors: Banking, payments, wealth management, and capital markets.
- Project focus: Financial platforms connected to enterprise systems and data.
- Location: Sydney office.
Contact Information
- Website: www.epam.com
- Facebook: www.facebook.com/EPAM.Global
- LinkedIn: www.linkedin.com/company/epam-systems
- Instagram: www.instagram.com/epamsystems
- Address: Rooms 1923@1928, Levels 19-21, 135 King Street, Sydney, NSW 2000, Australia
- Phone: +61 2 8310 8272
5. Thoughtworks
Thoughtworks supports banks and fintech scale-ups through software engineering, technology modernisation, and changes to how development teams work. Its Australian financial services offering covers banking, payments, wealth management, and insurance. Payment services and financial products are developed alongside improvements to the systems and delivery practices that support them.
The company's work with TBC Bank included adopting agile practices and changing daily operations. That combination of engineering and organisational support is relevant when a financial business needs to improve release processes as well as the software itself. Data, AI, and cloud capabilities form part of its wider service offering.
Key Facts
- Core services: Software engineering, platform modernisation, data, and AI.
- Financial focus: Banking, payment services, wealth management, and insurance.
- Relevant experience: Technology and delivery transformation for TBC Bank.
- Market coverage: Australian operations and international delivery.
Contact Information
- Website: www.thoughtworks.com
- E-mail: moc.skrowthguoht@su-tcatnoc
- Facebook: www.facebook.com/Thoughtworks
- Twitter: x.com/thoughtworks
- LinkedIn: www.linkedin.com/company/thoughtworks
- Instagram: www.instagram.com/thoughtworks
- Address: Level 14, 210 George Street, Sydney, New South Wales 2000
6. Appinventiv
Appinventiv builds financial software across banking, lending, investment, payments, and digital wallets. Its services extend from fintech consulting to application and backend development, with separate offerings for trading systems and insurance software. The company has an Australian office in Stones Corner, Queensland, within its international delivery network.
For Sydney businesses comparing product development partners, the breadth of its financial applications is a useful starting point. A project can involve a mobile interface, payment processing, and financial business logic within the same engagement. Appinventiv also provides cloud, data analytics, and AI services that can support the wider product.
Key Facts
- Core services: Fintech consulting, custom software, mobile applications, and cloud services.
- Project types: Lending systems, investment platforms, payment software, and wallets.
- Additional capabilities: Data analytics and AI development.
- Australian location: Stones Corner, Queensland.
Contact Information
- Website: appinventiv.com
- Twitter: x.com/appinventiv
- LinkedIn: www.linkedin.com/company/appinventiv
- Instagram: www.instagram.com/appinventiv
- Address: 96 Cleveland Street, Stones Corner, QLD 4120, Australia
- Phone: +61-7-5327-3322
7. Endava
Endava's finance and banking practice covers retail banking, commercial banking, and capital markets. The international engineering company develops technology around core modernisation, financial data, and customer experience. Its work includes a data dashboard for a large US bank and a Google Cloud workflow system for a financial services organisation.
Those projects illustrate its role in both customer-facing services and internal operations. Endava can work alongside banking teams on architecture and delivery while bringing cloud and automation capabilities into the programme. For a Sydney buyer, its financial engineering practice offers an international option for projects involving established banking systems and multiple technical dependencies.
Key Facts
- Core services: Software engineering, core modernisation, cloud, and data solutions.
- Financial focus: Retail banking, commercial banking, and capital markets.
- Relevant project types: Financial dashboards and cloud-based operational workflows.
- Delivery: International engineering organisation.
Contact Information
- Website: www.endava.com
- Facebook: www.facebook.com/endava
- LinkedIn: www.linkedin.com/company/endava
- Instagram: www.instagram.com/endava
- Address: Riverside Centre, Level 8, 123 Eagle St, Brisbane, Queensland, 4000, Australia
- Phone: +61738332400
8. Cognizant
Cognizant has a Sydney office and a banking technology practice covering digital banking, lending, payments, and core system integration. Its services include payment hub modernisation, real-time payments, and Temenos systems integration. These are relevant to financial businesses whose product plans depend on changing established transaction infrastructure.
The company also works on financial data and AI, with capital markets capabilities that include client onboarding, data integrity, and wealth management. Its range is most relevant to programmes spanning several banking functions. A Sydney organisation can evaluate Cognizant for the engineering and integration work behind a broader change to financial operations.
Key Facts
- Core services: Banking technology development, payment modernisation, and systems integration.
- Specialist capabilities: Temenos integration, real-time payments, and financial data solutions.
- Financial sectors: Banking, capital markets, and insurance.
- Location: Barangaroo, Sydney.
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 Avenue, Sydney, NSW 2000, Australia
- Phone: +61 2 9223 3988
9. Capgemini
Capgemini works on digital banking, lending, cards and payments, and capital markets technology. Its Australian operations include Sydney offices, while its financial services teams support projects across customer experience, data, cloud, and financial crime controls.
A practical example is its work with Security Bank, which involved integrating six payment rails. That kind of integration is relevant when a financial institution needs several transaction services to work together within a consistent platform. Capgemini also helps lenders automate digital processes and wealth managers improve investor and adviser experiences, placing application work within a wider banking transformation programme.
Key Facts
- Core services: Banking technology transformation, payment integration, cloud, and data solutions.
- Financial focus: Payments, lending, capital markets, and wealth management.
- Relevant experience: Payment rail integration for Security Bank.
- Location: Sydney offices.
Contact Information
- Website: www.capgemini.com
- Facebook: www.facebook.com/CapgeminiAustralia
- LinkedIn: www.linkedin.com/company/capgemini
- Instagram: www.instagram.com/capgeminiaunz
- Address: Level 10 420 George Street Sydney New South Wales 2000
- Phone: +61 2 7227 0607
10. Infosys
Infosys provides application development and maintenance for financial services, supported by consulting, infrastructure, cloud, and risk-related technology services. It operates in Australia and New Zealand and offers financial technology capabilities across its global delivery organisation.
Its service range gives established financial businesses several ways to approach an upgrade. Teams can develop new applications, modernise existing software, or connect systems through APIs and microservices. Infosys also offers quantitative finance capabilities and financial services cloud solutions. For projects with a large installed technology base, ongoing application maintenance can sit within the same programme as new development.
Key Facts
- Core services: Application development, maintenance, modernisation, and integration.
- Financial capabilities: Quantitative finance, cloud solutions, and risk-related technology.
- Project focus: Development and support across existing enterprise systems.
- Market coverage: Australia and New Zealand, with international delivery.
Contact Information
- Website: www.infosys.com
- 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
11. Wipro
Wipro supports banking projects involving digital channels, credit services, payments, and core systems. Its Australian and New Zealand practice includes financial services, superannuation, wealth, and insurance, with ANZ Bank among the organisations it works with in the region.
Cloud transformation and integration are central parts of its banking offering. Wipro also provides application management and testing, which matter when new services must coexist with systems already in production. Its mortgage and lending capabilities include the NetOxygen platform, giving buyers a reason to distinguish between custom development work and projects built around an existing software product.
Key Facts
- Core services: Banking modernisation, integration, cloud services, testing, and application management.
- Financial focus: Core banking, payments, lending, and wealth management.
- Relevant platform: NetOxygen for lending.
- Market coverage: Australia and New Zealand.
Contact Information
- Website: www.wipro.com
- Facebook: www.facebook.com/WiproLimited
- LinkedIn: www.linkedin.com/company/wipro
- Instagram: www.instagram.com/wiprolimited
- Address: Level 19, 201 Kent St Sydney, 2000
- Phone: +61 2 8459 9350
12. HCLTech
HCLTech has an office in North Sydney and provides application and platform engineering for financial services. Its work covers core banking modernisation, cloud-ready applications, insurance technology, and capital markets systems. It also integrates data, applications, and platforms to address fragmented technology environments.
The engineering offering includes software lifecycle automation, while its operational services cover monitoring and infrastructure. This makes HCLTech relevant to financial institutions planning changes that extend beyond an individual application. A programme may include rebuilding a platform, migrating related systems, and improving the way releases and production services are managed.
Key Facts
- Core services: Application engineering, platform modernisation, cloud migration, and automation.
- Financial sectors: Banking, insurance, capital markets, and fintech.
- Project focus: Connected changes across software, data, and infrastructure.
- Location: North Sydney.
Contact Information
- Website: www.hcltech.com
- E-mail: moc.hcetlch@ua.lch
- Facebook: www.facebook.com/HCLTechOfficial
- Twitter: x.com/hcltech
- LinkedIn: www.linkedin.com/company/hcltech
- Instagram: www.instagram.com/hcltech
- Address: Level 8, 1 Pacific Highway, North Sydney, NSW 2060, Australia
13. NTT DATA
NTT DATA's Australian banking and financial services offering includes payment infrastructure modernisation, digital banking, lending, and wealth management. It combines these industry services with application development, product development, quality engineering, and application management.
Its customer-facing work can involve mobile services, robo-advisers, and automated investment tools. Behind those products, NTT DATA also works with mainframe and open-source platforms, cloud architecture, and data systems. That range is relevant when a financial business needs a development partner that can connect a new service to existing operations and continue supporting the applications after implementation.
Key Facts
- Core services: Application development, modernisation, quality engineering, and application management.
- Financial focus: Payments, lending, digital banking, and wealth management.
- Project types: Customer applications and supporting banking platforms.
- Market coverage: Australian services backed by international delivery.
Contact Information
- Website: www.nttdata.com
- Facebook: www.facebook.com/globalntt
- Twitter: x.com/nttdata\_inc
- LinkedIn: www.linkedin.com/company/ntt-data-inc
- Instagram: www.instagram.com/nttdatainc
- Address: Level 1, 75 Pitt Street, AU-Sydney NSW 2000
14. Accenture
Accenture combines financial services consulting with technology delivery across core banking, payments, lending, and banking operations. Its work with Commonwealth Bank of Australia included rebuilding the bank's core foundation using SAP Transaction Banking on AWS. That is a relevant example for organisations evaluating substantial changes to transaction processing and infrastructure.
Its open banking services extend from business strategy through implementation and ongoing support. Accenture also develops approaches to digital lending and customer engagement using data and automation. The scale and breadth of these services make it a consideration for programmes that involve technology, operating processes, and several business teams.
Key Facts
- Core services: Banking technology delivery, core modernisation, payments, and systems transformation.
- Financial focus: Banking, lending, open banking, and payment services.
- Relevant experience: Commonwealth Bank of Australia core banking transformation.
- Delivery: International consulting and technology organisation.
Contact Information
- Website: www.accenture.com
- Address: International House, 3 Sussex St, Barangaroo NSW 2000
- Phone: +61290055000
15. DXC Technology
DXC Technology develops and modernises financial software for banks, asset managers, wealth firms, and other financial institutions. Its financial services offering includes bespoke software engineering and testing, trading and risk systems, reconciliation, and regulatory reporting. DXC Luxoft forms part of the organisation's engineering capability.
The company combines custom work with established financial platforms. These include Hogan for core banking and CoreIgnite for exposing core services through APIs and coordinating real-time processes. DXC also implements and supports systems from financial technology vendors. Its international offering is relevant to projects where new development must work closely with an existing core or trading platform.
Key Facts
- Core services: Custom software engineering, testing, platform integration, and legacy modernisation.
- Financial focus: Core banking, trading, risk, payments, and wealth management.
- Relevant platforms: Hogan and CoreIgnite.
- Delivery: International financial technology and engineering services.
Contact Information
- Website: dxc.com
- E-mail: moc.cxd@soroma.ttocs
- LinkedIn: www.linkedin.com/company/dxctechnology
- Instagram: www.instagram.com/dxctechnology
- Phone: 1-888-899-8037
Conclusion
Sydney businesses have a broad choice of fintech software development companies, from local engineering teams to global technology providers. The companies in this list cover different needs, including banking applications, payment integrations, lending platforms, core system modernisation, cloud migration, and financial data solutions. Some focus on product development, while others bring deeper experience with complex enterprise environments.
The best choice depends on the project scope, existing technology stack, required financial expertise, and level of ongoing support. Comparing relevant case studies, technical capabilities, delivery models, and experience with similar financial systems can help narrow the field and select a development partner suited to the project.