We build core banking system integrations, account management platforms, digital onboarding & AML / anti-fraud solutions, and real-time transaction processing systems. For neo banks and challengers entering the market, we handle the full stack: from KYC onboarding and identity verification to account dashboards and multi-currency support.
Our teams understand the regulatory landscape for digital banking across the US, EU, Australia, and Singapore, including Open Banking (PSD2) requirements for European markets and PDPA for Southeast Asia.
Every fintech product starts with a unique business problem. We develop custom fintech software - web applications, mobile apps, and SaaS platforms, tailored to your specific workflows and compliance requirements.
Our engineers work across .NET, Java/Spring Boot, React, Angular, Flutter, and React Native, giving you flexibility in tech stack decisions without compromising on security best practices. Whether you need a fintech mobile app for consumer-facing transactions or an internal platform for financial analysis and forecasting, we build it to your specifications.
Payment gateways integration and development is one of our core strengths. We build and integrate payment processing systems, including cross-border payment platforms, P2P payment systems, POS integrations, recurring billing and subscription management engines, and tax handling modules.
Every payment system we develop is built with PCI-DSS compliance from the architecture stage, not added as an afterthought. That means AES-256 encryption, tokenization, multi-factor authentication, and complete audit trails are embedded in the foundation.
We develop full-lifecycle loan origination systems, from application intake and AI credit risk management through underwriting automation, scoring systems, disbursement, servicing, and collections.
Real-world example: For a US-based personal loans platform, we ramped 20 senior engineers in 3 months and built the complete loan lifecycle system. The engagement has run for 3+ years, covering origination, underwriting, servicing, and compliance reporting. This kind of sustained partnership is typical of our fintech work, we don't just build and leave.
We build wealth management software and robo-advisor systems that cover portfolio management, fund operations, broker management, and trading platforms with low-latency trade execution.
Real-world example: For a US wealth management client, we delivered a full-scale platform covering portfolio management, trading, fund operations, and broker management with transparent audit trails. The engagement has continued for 2+ years, with ongoing feature enhancements and performance tuning for low-latency trade flows.
For clients building in the decentralized finance space, we develop blockchain & smart contract solutions, including tokenization platforms, digital wallets, crypto custody systems, and DeFi applications. We work across Ethereum, Solana, and private blockchain frameworks, with a focus on security auditing and smart contract verification.
AI-powered fintech development is where we see the most demand growth. We build:
Many financial organizations run critical operations on legacy systems that can't keep pace with modern demands. We handle modernization of legacy finance software - breaking monoliths into microservices, migrating to cloud-based platforms (AWS, Azure, GCP), building API-driven open banking platforms, and ensuring seamless integration with existing banking infrastructure.
This includes legacy code refresh, cloud migration, data migration, and real-time data integration, all while maintaining compliance and zero-downtime requirements.
Our fintech development services span the full range of financial verticals. Each sector comes with its own regulatory requirements, user expectations, and technical challenges. Here's how we approach them:
Banking & Neobanking
Digital account opening, core banking system integration, real-time payments, and regulatory reporting. Compliance focus: KYC/AML, Open Banking (PSD2), strong customer authentication (SCA).
Payments & Remittance
Payment gateway development and integration, cross-border transfers, eWallet apps, BNPL & loyalty management systems, and payment systems that handle high transaction volumes. Compliance focus: PCI DSS, anti-money laundering regulations.
Lending & Credit
Loan origination systems, automated underwriting, scoring systems, and servicing platforms. Compliance focus: fair lending regulations, GDPR data handling, credit reporting standards.
Insurance (InsurTech)
Insurance software solutions, claims processing automation, risk and compliance management software, and policy administration. Compliance focus: state-level insurance regulations, data privacy.
Wealth Management & Investment
Portfolio management, trading platforms, robo-advisor systems, and fund operations. Compliance focus: SOX reporting, fiduciary requirements, real-time data integration.
Regulatory Technology (RegTech)
RegTech software solutions for automated compliance monitoring, AML & antifraud solutions, regulatory reporting, and workflow automation and orchestration. We build business rules management systems and human-in-the-loop systems that keep compliance teams efficient.
Embedded Finance
White-label fintech solutions for non-financial companies adding financial features, embedded payments, lending-as-a-service, and digital payments experience integrated into existing platforms.
Selecting the right fintech software development company is a high-stakes decision. You need a partner who understands both the technology and the regulatory environment. Here's why 300+ clients worldwide trust Saigon Technology:
Deep Fintech Compliance Expertise
We don't just list compliance frameworks on a slide deck. Our teams have implementation experience across PCI-DSS, KYC/AML, GDPR, Open Banking (PSD2), SOX, and PDPA. Across 800+ projects, we've learned that security and fintech compliance must be architected from day one, not patched on before launch.
Every fintech project starts with a compliance requirements analysis that maps regulations to technical architecture decisions.
ISO 9001 & ISO 27001 Certified (BSI, UK)
Our quality management and information security certifications come from BSI (British Standards Institution), not a rubber-stamp body. In practice, this means AES-256 encryption, Zero Trust Architecture, OAuth 2.1, role-based access control (RBAC), and documented security protocols across every project.
Proven Fintech Track Record
Our fintech portfolio includes multi-year engagements with measurable outcomes:
These aren't short-term projects. Fintech clients stay because we deliver consistently.
Top 1% Shortlisted Engineers
Every developer goes through a 3-stage assessment - Talent Acquisition screening, Tech Lead technical evaluation, and HR cultural fit. Only the top 1% make it through. Our 400+ engineers span .NET, Java, Python, React, Flutter, AI/ML, and security specializations, the exact skill sets fintech products demand.
2-Week Risk-Free Trial
Test our developers on your codebase before making a long-term commitment. This eliminates the biggest risk in vendor selection: you see how our engineers actually work with your team, your tools, and your standards, before you sign a contract.
Cost-Effective Vietnam Rates
Our rates range from $28–$46/hour depending on seniority and engagement model. With 3 development centers in Vietnam and global offices in the US, Germany, Australia, and Singapore, you get senior-level fintech engineers at a fraction of onshore costs, without the communication gaps. For context, fintech projects typically require mid-to-senior engineers due to compliance complexity, so our rate range reflects that reality.
Stable Teams, Low Turnover
We were named a Fortune 100 Best Companies to Work For in Southeast Asia 2025. That recognition translates directly to your project: developers stay, knowledge accumulates, and you don't lose months re-onboarding replacements. On our longest fintech engagements, core team members have been on the project for 3+ years.
Flexible Engagement Models
Scale your fintech team the way your product stage requires - dedicated teams for ongoing development, staff augmentation for filling specific skill gaps, ODC (Offshore Development Center) for large programs, fixed-price for well-scoped MVPs, or BOT (Build-Operate-Transfer) if you want to build your own Vietnam-based fintech engineering team.
Here's what separates a good fintech software development company from a risky one: compliance can't be bolted on after the code is written. It must be architected into the system from the first sprint.
We've seen what happens when teams treat compliance as a checklist item at the end of development, failed audits, costly rework, and delayed launches. That's why every Saigon Technology fintech project begins with a compliance mapping exercise that connects regulatory requirements to specific technical decisions.
Our ISO 27001 certification (BSI, UK) provides organizational-level proof of our security management practices. Beyond certifications, we enforce NDAs, IP protection agreements, and complete ownership transfer on every engagement, your code and data belong to you.
We map your business goals, compliance frameworks, user needs, and integration landscape. For fintech, this stage includes identifying every applicable regulation (PCI-DSS, KYC/AML, GDPR, SOX) and how they shape the technical architecture.
We design system architecture with security, scalability, and regulatory compliance built in. This means defining encryption protocols, access control models, audit logging, and deployment and implementation strategies before writing code.
Fintech-specific user interfaces (UIs) require careful attention: secure authentication flows, transaction dashboards, data analytics visualizations, and accessible design that meets WCAG standards. Our UI/UX designers focus on creating intuitive interfaces that balance user experience with security requirements, because a confusing checkout flow or clunky digital onboarding kills conversion.
Sprint-based delivery with CI/CD pipelines, mandatory code reviews, and progress transparency. We follow agile development practices combined with DevOps methodology. You see working software every two weeks, not a big-bang delivery months later.
Automated and manual testing, penetration testing, compliance audits, and vulnerability assessments. For fintech, QA goes beyond functional testing, we verify that encryption protocols, multi-factor authentication, and access controls work exactly as designed under real-world conditions.
Production deployment on AWS, Azure, or GCP with monitoring, auto-scaling, and disaster recovery. We configure infrastructure for high availability, because downtime in a payment system isn't just inconvenient, it's a revenue and trust problem.
Post-launch support, feature enhancements, performance optimization, monitoring, and compliance updates as regulations evolve. Fintech products are never "done", regulatory changes, new payment methods, and security threats require continuous attention.
Fintech software development services encompass the design, development, testing, and maintenance of technology solutions for the financial services industry. This includes building digital banking platforms, payment gateways, lending systems, wealth management tools, insurance platforms, and regulatory compliance software, all requiring specialized expertise in financial regulations and data security.
Cost depends on project complexity, compliance requirements, team size, and engagement model. At Saigon Technology, rates range from $28–$46/hour. A fintech MVP typically costs $50,000–$150,000, while a full-scale platform with complex integrations and compliance requirements can range from $200,000–$500,000+. The main cost drivers are regulatory complexity, number of integrations, and whether you need AI/ML capabilities.
A fintech MVP typically takes 3–6 months. A full production platform with comprehensive compliance, multiple integrations, and advanced features takes 6–18 months. Timelines are heavily influenced by regulatory requirements, a simple eWallet app ships faster than a full loan origination system with automated underwriting and regulatory reporting.
This depends on your product type and target markets. Common standards include:
Security is built into our process at every stage. We hold ISO 27001 certification (BSI, UK) and implement AES-256 encryption, Zero Trust Architecture, penetration testing, RBAC, complete audit trails, and multi-factor authentication. Every fintech project includes a security architecture review before development begins and regular vulnerability assessments throughout.
Traditional financial software tends to be monolithic, on-premise, and waterfall-developed. Modern fintech development is cloud-native, API-first, built with agile development practices, and designed for embedded finance architectures. Fintech products prioritize speed-to-market, user experience, real-time processing, and seamless third-party integrations, while still meeting the same regulatory standards as traditional systems.
Yes. Seamless integration with existing banking infrastructure is a core part of our work. We handle API integration, legacy code refresh and modernization, middleware development, and connections to core banking systems, payment networks, and credit bureaus. For health-adjacent financial products, we also work with HL7/FHIR standards.
It depends on your stage. Dedicated teams work well for ongoing product development. Fixed-price is good for well-scoped MVPs. Staff augmentation helps when you need to add specific skills (AI, security, mobile) to an existing team. For large-scale programs, an ODC (Offshore Development Center) provides full operational support. We help you choose during our initial consultation.
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Mar 05, 2026 
