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Fintech Software Development Services

Fintech is the area where software correctness has the most direct financial consequence. A rounding convention chosen carelessly becomes a discrepancy nobody can explain. A retried request without an idempotency key becomes a duplicate charge. A credit decision whose rules were not versioned becomes indefensible three years later when someone asks why an applicant was declined. None of these are exotic failures. They are the ordinary ones, and they are why we build financial software from the accounting core outwards rather than from the screens inwards.

10+Years of Industry Expertise 200+Talented Developers 90%Customer Satisfaction Rate
AgileTech Vietnam open-plan development office
ISO 9001:2015 Certified ISO 27001:2013 Certified

What Fintech Clients Say About AgileTech

Independent reviews from Clutch and DesignRush. Every review below is shown in full and links back to its source platform so you can confirm it yourself.

5.0
Jun 2025

“Their proactive communication, flexibility, and technical expertise stood out throughout the project.”

AgileTech Viet Nam used React Native to develop an iOS and Android app for a real estate platform. The team integrated the app with the client’s backend and implemented property search features. AgileTech Viet Nam’s high-quality work resulted in a 30% increase in user registrations and over 1,000 app downloads within the first month. The team delivered on time, provided regular updates, and responded to feedback. Their flexibility and proactive communication impressed the client.

30% more sign-ups and 1,000+ downloads in the first month

5.0
May 2026

“They followed a structured Agile approach with clearly defined milestones.”

AgileTech Viet Nam developed a web-based logistics management system for an automotive parts supplier. The team integrated the platform with third-party providers and built a real-time tracking dashboard. AgileTech Viet Nam’s work reduced manual processing by 55%, improved real-time shipment visibility, and increased operational efficiency across multiple departments. The team followed a structured Agile approach, communicated consistently, delivered on time, and was flexible.

Manual processing reduced by 55% with real-time shipment visibility

5.0
May 2026

“They were not just executing tasks but were genuinely invested in the product’s success.”

AgileTech Viet Nam developed an MVP for a digital solutions provider’s marketplace platform. They created the UI/UX design, developed the front- and backend, and integrated payment systems. AgileTech Viet Nam successfully launched the MVP on time, allowing the client to onboard 500 users within two months. The platform was stable with minimal issues. Moreover, the team was collaborative, flexible, quick to adapt to changing priorities, and genuinely invested in the project’s success.

MVP launched on time, 500 users onboarded within two months

5.0
May 2026

“Their ability to handle both high-level architecture and hands-on implementation is rare.”

An IT services company hired AgileTech Viet Nam to re-architect their enterprise SaaS platform. The team conducted a technical audit, designed a new architecture, migrated legacy data, and added API gateways. Thanks to AgileTech Viet Nam’s work, the client saw improvements in system scalability, platform uptime, and deployment time. The team followed the Agile methodology, communicated effectively, and was responsive to the client’s feedback. AgileTech Viet Nam helped the client make better decisions.

Improved scalability, uptime, and deployment time on an enterprise SaaS

5.0
May 2026

“Their balance between technical expertise and product thinking stood out.”

AgileTech Viet Nam developed an AI-powered analytics platform for an AI visibility and GEO solutions company. The platform featured real-time reporting dashboards and data processing pipelines. AgileTech Viet Nam’s work improved the client’s data processing efficiency and the accuracy of AI-generated insights. The platform was user-friendly and supported the client’s first large-scale deployments. AgileTech Viet Nam’s team was communicative, adaptive, and technically proficient.

Improved data-processing efficiency and AI insight accuracy

5.0
May 2026

“Their professionalism, responsiveness, and ability to execute efficiently made them feel like an operational partner.”

AgileTech Viet Nam optimized a workflow for a consulting firm. The team improved lead management processes and streamlined internal communication systems across multiple departments. AgileTech Viet Nam’s work improved the client’s operations, customer communication process, and overall workflow efficiency. The team was strategic and reliable. Moreover, AgileTech Viet Nam worked closely with the client to understand their business objectives and recommend solutions.

5.0
May 2026

“They were flexible in accommodating evolving business needs while still keeping the project on track.”

AgileTech Viet Nam developed a digital platform for a real estate firm. They designed the UI/UX, implemented advanced search and filtering functionalities, integrated dashboards, and automated reporting tools. The platform improved operational efficiency, business performance, lead conversion rates, and customer responsiveness. AgileTech Viet Nam implemented a well-structured project management approach, meeting timelines and responding to feedback with flexibility. Their tailored solutions stood out.

Improved efficiency, business performance, and lead conversion

5.0
Mar 2026

“The team demonstrated strong professionalism, reliability, and a proactive approach throughout the project.”

AgileTech Viet Nam developed a scalable engineering workflow system for an ICT company. The goal was to streamline internal processes, improve cross-team visibility, and enhance coordination. The system significantly improved operational efficiency by reducing manual processes and increasing transparency across teams for the client. AgileTech Viet Nam set clear milestones and provided regular updates to ensure everyone remained in sync. Their professionalism and reliability stood out.

Scalable engineering workflow system with fewer manual processes

4.5
Apr 2021

“They are incredible to work with and are truly passionate about technology and our concept.”

AgileTech Viet Nam provides mobile app development services for a social media startup. They are building the app using Node.js and Flutter. With the ongoing partnership, AgileTech Viet Nam’s passion has impressed the client so far. The team is truly into technology, and their concept makes the client feel confident about the project’s continuous success.

4.0
Jun 2019

“I was impressed with the flow of the project.”

AgileTech Viet Nam developed a mobile app from scratch. After helping with scoping and objective formation, AgileTech created design mockups and developed the full iOS and Android solutions. Valuable user data is being gathered in ongoing beta tests, which will soon lead to growth and expansion opportunities. AgileTech Viet Nam provided consistent communication and established a smooth workflow. Issues were raised proactively, allowing fixes to come earlier in the process.

5.0
Nov 2024

“AgileTech excelled in supporting our project from initial mock-ups through to the final delivery on the App Store.”

AgileTech excelled in supporting our project from initial mock-ups through to the final delivery on the App Store, incorporating data analytics that we could easily share with our customers. The scope of work included mock-up creation, UI/UX design, interactive prototyping, app development, rigorous testing, and setting up a secure production environment on AWS, culminating in the apps release on both iOS and Android platforms.

5.0
Nov 2024

“The platform has greatly improved our operational efficiency, and we wholeheartedly recommend AgileTech.”

Working with AgileTech has been an amazing experience, especially when it comes to creating a personalized e-learning program for our IT services business. We were pleasantly surprised by how adaptable and scalable the platform developed by the AgileTech Team was. Their proficiency with user-friendly course administration and community participation technologies enabled us to provide a thorough instructional resource catered to our customers’ particular requirements. The platform has greatly improved our operational efficiency, and we are amazed by its capacity to manage heavy traffic with ease and offer comprehensive reporting and analytics. The platform remained successful and user-friendly because of the team’s dedication to continuous support and their quick response to criticism. For any organization looking to create innovative and reliable digital solutions, we wholeheartedly recommend AgileTech as a partner.

Personalized e-learning platform that handles heavy traffic

5.0
Nov 2024

“They used a potent tech stack including PHP, React, and AWS to guarantee perfect scalability and zero downtime.”

AgileTech provided a superb Learning Management System (LMS) that creatively and precisely addressed the intricate needs of our organization. Within a scalable, completely customizable platform, the LMS made it possible to create comprehensive courses, administer student tests, engage the community, and obtain real-time data insights. AgileTech’s modular and agile approach made sure that every component, from the user-friendly course builder to the sophisticated analytics and communication tools, was customized to meet our demands despite the difficulties of developing such a feature-rich system. In order to guarantee perfect scalability and zero downtime, even with high user concurrency, AgileTech used a potent tech stack that included PHP, React, and AWS. Their post-launch assistance, which included frequent training sessions and upgrades, gave our staff the means to fully use the LMS’s potential. This project was a testament to AgileTech’s technical skill, rapid deployment, and dedication, making them an outstanding choice for educational technology development.

Feature-rich LMS with course builder, analytics, and comms

5.0
Nov 2024

“We saw huge cost savings and optimized stock levels, so we consider AgileTech a partner in our company transformation.”

AgileTech created a working Supply Chain Management (SCM) system that has helped our supermarket chain simplify operations across inventory management, demand forecasting and logistics. They integrated our existing systems, automated inventory and logistics and gave us robust demand forecasting with AI, we saw huge cost savings and optimized stock levels. And they continued to deliver on quality post launch with regular updates and training sessions, so we consider AgileTech as a partner in our company transformation.

AI-driven demand forecasting across inventory and logistics

5.0
Nov 2024

“Since we launched our new site we’ve seen a significant increase in traffic and sales, which proves their work is effective.”

We’ve had an amazing experience with AgileTech for our eCommerce platform. The team worked with us to build an user friendly online store that met all our business needs. Their eCommerce development expertise was evident from the start as they shared valuable insights on how to maximize sales. The AgileTech team are not only talented but also care about their clients success. Since we launched our new site we’ve seen a significant increase in traffic and sales which proves their work is effective.

5.0
Nov 2024

“Their attention to detail in web development and UI/UX design has given us a site that looks great and works flawlessly.”

Working with AgileTech has been a game changer for us. We wanted a modern and responsive website and AgileTech delivered more than we expected. The team was super collaborative and involved us in every step of the process. Their attention to detail in web development and UI/UX design has given us a site that looks great and works flawlessly. The AgileTech team members are not only talented professionals but also great communicators, so we could share our vision and ideas easily. They were so committed to our success and the end result has increased our user engagement and satisfaction so much.

Who benefits from Fintech Software Development Services - AgileTech Vietnam

Who can Benefit from Custom Fintech Software?

Fintech Startups Building Their First Real Ledger

The prototype took payments and the numbers looked right, and now volume has exposed that balances cannot be explained and reconciliation is a spreadsheet. This is the most common state we are called into. The work is building the accounting core that should have come first, usually alongside the working product rather than instead of it, so revenue continues while the foundation is corrected.

Banks and Institutions Modernising Over a Working Core

The core banking system holds the accounts and is not going anywhere. The value is in onboarding people complete, transfers that behave predictably, and an operations console that lets staff resolve exceptions without raising an engineering ticket. The main risk is assuming the core can supply real time data when it cannot, which is why we test its interfaces before designing over them.

Lenders Whose Servicing Ledger Has Drifted

Origination works and the book is growing, but schedules, arrears, and allocations no longer reconcile, and each restructure makes it worse. Servicing is where lending platforms fail, and it fails slowly enough that the problem is large by the time it is visible. The remedy is exact arithmetic, defined allocation order, and continuous reconciliation against a recomputed schedule.

Advice Firms and Wealth Managers Consolidating Data

Advisers spend hours preparing for meetings because holdings sit across several custodians in incompatible formats and nothing agrees. Here the platform is a data problem before it is a planning problem. Until every figure has a known source and valuation date, the planning tools built on top of it cannot be trusted, however good they look.

Embedded Finance and Marketplace Operators

You are not a licensed institution but your product needs accounts, balances, cards, or payouts through a partner who is. The difficult work is the boundary: which system is authoritative, how you reconcile against the partner daily, and what evidence you hold independently of them. These programmes rarely fail on the integration and regularly fail on the reconciliation.

Why Partner with AgileTech Vietnam?

The reasons global companies trust AgileTech Vietnam with their fintech software development, from domain expertise to uncompromising quality and security.

Why partner with AgileTech Vietnam for fintech software development

Accurate about licensing and certification

We state plainly what we hold, which is ISO 9001:2015 and ISO 27001:2013, and nothing beyond it. We are not a bank, lender, payment institution, or adviser, and we do not claim PCI DSS, PSD2, SOC 2, or any regulatory certification as an entity. Our contribution is engineering that keeps your compliance scope small and documents the data flows your assessor will ask about. Any vendor implying their certifications discharge your obligations is worth treating with suspicion.

Exact arithmetic and idempotency by default

Money is stored as integer minor units, never floating point. Every operation that moves money requires an idempotency key, so a retry is safe by construction rather than by convention. Balances are derived from immutable ledger entries rather than stored and updated. These are not premium options in our proposals. They are how we build, because the alternative produces errors that surface months later and cannot be traced.

Decisions and records that survive later scrutiny

Credit decisions retain their rule version, inputs, and reason codes so they replay identically years later. Suitability records are dated and immutable, with reviews creating new versions rather than overwriting the old. Audit trails are queryable business records rather than log files that expire in weeks. This is what allows you to answer a regulator, an auditor, or a customer dispute with evidence rather than an explanation.

Reconciliation proven before launch, not after

We do not consider a financial platform ready until settlement, ledger, and reporting tie out against real data and every exception has an owner. This gate has delayed launches, and we hold it anyway, because a platform launched without proven reconciliation hands the finance team a problem that grows daily and cannot be solved retrospectively.

  • delivering software from Hanoi, with financial systems among the most demanding work we take on.
  • in one location, so a payment or ledger team can be staffed without assembling contractors across time zones.
  • completed, with a 90% customer satisfaction rate and a 4.9/5 rating on Clutch.
  • certified quality and information security management. These are the only certifications we hold, and we do not present them as covering PCI DSS, banking, or advice obligations.
  • every page in this practice describes capability and method. Where we have no delivered example to cite, we say so rather than implying one, and no client name, metric, or case study appears anywhere without permission and a real project behind it.
  • source, infrastructure definitions, and documentation are delivered to your repositories, and provider contracts stay between you and the provider. Funds never flow through us and handover assumes your team maintains this without us.

Our Approach to Fintech Software Development

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A structured six-phase delivery approach that keeps quality, transparency, and your fintech software development goals aligned from discovery to ongoing evolution.

AgileTech software delivery process A six step delivery workflow: requirement analysis, planning and design, development, quality assurance, deployment, then maintenance and support. 01 RequirementAnalysis 02 Planning &Design 03 Development 04 QualityAssurance 05 Deployment 06 Maintenance &Support
01

Map the money before anything else

We start from the movements: who owes whom, in what currency, when the obligation arises, when cash actually arrives, who bears the fee, and what happens on reversal. This produces the account structure and ledger design. It is the single most consequential step, and correcting it after go live is close to a rebuild.

02

Test the interfaces you will depend on

Core banking systems, custodians, acquirers, and bureaux are exercised in sandbox before design is fixed: latency, data freshness, throughput ceilings, error behaviour, and how each handles partial and ambiguous outcomes. Provider documentation routinely differs from provider behaviour, and finding that out early changes designs cheaply.

03

Build the accounting core first

Ledger, account structure, idempotency, and calculation logic are built and tested before any customer facing flow, using worked examples your own finance and compliance teams verify independently of us. We test with adversarial sequences rather than happy paths: duplicates, out of order events, reversals arriving before the original, and concurrent operations on one account.

04

Add journeys and operations tooling together

Customer facing flows are built alongside the back office console that supports them, because manual review and exception handling are part of the process rather than an afterthought. An operations team that needs a developer for routine exceptions is a sign the platform is unfinished, and it is the most common gap we are asked to fix.

05

Prove reconciliation and controls before launch

Settlement files, ledger totals, schedules, and reports must tie out against real data, with every exception owned. Permissions, four eyes approvals, and audit trails are tested by attempting to misuse them. Your risk and audit functions review this before the first customer, not after the first incident.

06

Launch narrow, widen on evidence

Live traffic starts on a limited slice by product, market, cohort, or share of volume, monitored on authorisation and collection success, latency, decision distribution, and reconciliation gap. Volume grows as the numbers stay clean. Handover includes runbooks for provider outage, stuck settlement, dispute surges, and reconciliation breaks.

Flexible Engagement Models

Choose the engagement model that fits your project size, budget, and timeline. All models include dedicated communication channels and transparent progress tracking.

Engagement models at AgileTech Three engagement models: dedicated development team, project based outsourcing, and staff augmentation, all connected to your product, delivering security and compliance, scalability, a market-fit product, cutting-edge technology, domain expertise, and transparent collaboration. DedicatedDevelopment Team Project-BasedOutsourcing Staff Augmentation Your Product Security &Compliance Scalability Market-Fit Product Cutting-EdgeTechnology Domain Expertise TransparentCollaboration
AgileTech global delivery reach AgileTech delivers from Hanoi, Vietnam to clients across the United States, Europe, Australia, Japan, Korea, and Singapore. United States Europe Australia Japan Korea Singapore Hanoi, Vietnam

Frequently Asked Questions

Which of the four systems should we start with?

Start where money is currently unexplainable. If balances or settlement cannot be reconciled, the payment or lending accounting core comes first regardless of what the roadmap says, because every later feature inherits that uncertainty. If the numbers are sound and the problem is customer experience or operations effort, then onboarding, the client portal, or the back office console will return more. We will tell you which case you are in after looking at your data, and we have advised prospective clients to fix accounting before building the product they came to ask for.

Is AgileTech licensed or certified for financial services?

No, and this matters enough to state on every page. We hold ISO 9001:2015 and ISO 27001:2013 and no financial services licence, permission, or certification of any kind. We are not a bank, payment institution, lender, or adviser. We are not PCI DSS certified as an entity. We do not hold client funds and we are not party to your regulatory permissions. Those obligations are yours, and we build to whatever they require.

Do you have fintech case studies we can see?

We have two published case studies with client permission, both in hospitality rather than fintech, and you will find them in our portfolio. We will not present anonymised financial metrics or unnamed client claims as evidence, because unverifiable figures are worth nothing to you when assessing a vendor. What we can do is walk through our approach against your actual data model and let you judge the engineering directly, which is a more useful basis for a decision anyway.

Why do you insist on double entry ledgers?

Because a balance you store and edit cannot be audited. If a balance is one number that gets updated and it turns out wrong, there is no way to determine when or why. With immutable double entry, the balance is the sum of its entries, every entry has a cause, and a discrepancy points to a specific movement on a specific date. Corrections post as reversing entries, so history is never rewritten. It costs slightly more at the start and saves a great deal later.

How do you prevent duplicate charges and double postings?

Idempotency keys enforced at the platform boundary on every money moving operation. A repeated request with the same key returns the original result rather than acting again. This covers the ordinary causes: a user tapping twice, a mobile client retrying after a timeout, a queue redelivering a message, and a batch job rerun after a failure. Provider level idempotency is used where offered, but never relied on alone.

Can you work with our existing system rather than replacing it?

Usually, and it is often the better sequence. A frequent engagement is leaving the working acceptance or origination path in place while we build the ledger, reconciliation, and reporting layer that was never finished, then migrating the rest behind a stable interface. This puts effort where the loss actually is. Full replacement is sometimes correct, but it should be a decision rather than a default.

How do you handle regulatory requirements you are not qualified to interpret?

We ask your compliance function or external advisers to specify the requirement, and we implement and evidence it. We do not interpret regulation for you and we will not pretend to. What we do bring is knowledge of what these requirements usually imply for software: effective dating, immutability, reproducibility, segregation of duties, retention, and reporting. Raising those early is where we add value; advising on the regulation itself is not our role.

What technologies do you use for financial systems?

Strictly typed languages on the money path, typically Java, Kotlin, or Go, because they eliminate whole classes of arithmetic and null error. PostgreSQL as the system of record with exact numeric types, append only ledger tables, and strong constraints. Python where modelling sits close to your own analytical work. The choices are deliberately conservative, because a financial platform outlives the team that builds it and must be maintainable by people we will never meet.

How long does a fintech platform take to build?

A focused platform with one provider or core, one currency, and a proper ledger and reconciliation is typically several months. Multiple providers, currencies, products, or markets extend that considerably, and the extension is mostly in reconciliation and edge cases rather than in the visible flows. We give a range after mapping the money and testing your interfaces, because an estimate before those two steps is guesswork presented as a number.

Who owns the code, the data, and the provider relationships?

You own all three. Source code, infrastructure definitions, and documentation are delivered into your repositories as we go rather than at the end. Provider and custodian contracts are between you and them, so no funds or commercial relationship route through us. We build for handover on the assumption that your own team or another vendor maintains the platform without us.

What do you need from us to begin?

The movements your system must support, your licence position, the providers or core you use with sandbox access, your expected and peak volumes, and whether an existing book or ledger will migrate. If a system already exists, a data extract and one recent settlement or statement file tells us more in an hour than a week of workshops, because it shows us what is actually happening rather than what is believed to be.

Trusted and Recognized

Independent directories, certification bodies, and award programs that have assessed our work. Each badge links to its source or names the standard behind it, so every claim on this page can be checked at first hand.

Top Mobile App Developers - ClutchTop Software Development Company - GoodFirmsReliable Company - ExtractISO 9001:2015 certifiedISO 27001:2013 certifiedTechBehemoths Awards - Mobile App Development

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