Fintech software development services
Payments, lending, banking and wealth platforms built by senior LATAM engineers who work your hours and inside your compliance perimeter.
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15+years delivering software
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100+senior engineers across LATAM
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6-8hdaily overlap with US teams
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6+Fortune 500 & global brands trust us
Engineers who have already shipped under a regulator
Financial software fails for reasons that have nothing to do with the feature list: a reconciliation edge case at month end, an audit trail nobody can reconstruct, a sandbox that behaves differently from production.
FusionHit builds fintech products with senior engineers across Latin America who have worked inside PCI scope, next to compliance officers, and through the questions a sponsor bank asks before it says yes. They work US Central and Eastern hours, so the decisions that move a regulated release happen the same day.
\ Fintech systems we build
The products our clients bring us most often, each one built around the rails, the data and the rules it has to live with.
Digital banking platforms
Account opening, balances, transfers and statements, on a ledger that reconciles and an interface people can use every day.
Payments and wallets
Gateway and processor integrations, wallets, disbursements and the retry, refund and settlement logic underneath them.
Lending and loan origination
Application flows, decisioning, servicing and collections, with the audit trail each decision has to leave behind.
Wealth and investment platforms
Portfolio, order and reporting systems for advisors and their clients, built for the volumes a market open produces.
KYC, AML and onboarding
Identity, document and sanctions checks wired into an onboarding flow that stays fast when the rules get stricter.
Fraud detection and risk scoring
Models and rules that score transactions in line, with the monitoring to see what they are catching and what they are missing.
Core and third-party integrations
The layer between your core system, your processor, your KYC vendor and your data warehouse, so numbers match everywhere.
Legacy platform modernization
Moving a financial system off the stack that is holding it back, without stopping settlement or losing history.
The companies we build fintech software for
Different institutions, different constraints. These are the ones our engineers already know how to work with.
Banks and credit unions
Digital channels and integrations around a core you are not going to replace this year.
Payment companies and PSPs
Processing, settlement and merchant tooling, where an outage is measured in transactions, not tickets.
Lending platforms
Origination and servicing where the decision logic changes as often as the funding does.
Wealth and investment firms
Advisor and client platforms that have to be right at the close, every day.
Insurtech
Policy, quoting and claims systems that carry the same data-handling duties as any financial product.
Fintech startups
A first product that has to convince a sponsor bank and a security reviewer, not just a demo audience.
How we work inside your compliance perimeter
Every provider on this search lists the same certifications. Almost none of them says how the work is actually done. This is what we put in the agreement before anyone gets access.
By default, nobody on our side. Engineers work against masked or synthetic data in lower environments. Production access is granted by you, to named people, for a stated reason, and it is logged.
In repositories and cloud accounts under your organization, in the region you choose. We do not copy your data into our systems, and nothing moves to a personal device.
Every change goes through a ticket, a pull request and a review by a second engineer, so the record of who changed what, when and why is complete before an auditor asks for it.
We design to keep cardholder data out of your application wherever tokenization or a hosted field can do the job, and we tell you when a requirement puts something back in scope.
Named engineers, your identity provider, your MFA, your device policy. When someone rolls off the team, access is removed the same day and we confirm it in writing.
We answer your auditor's and your sponsor bank's questions about the engineering process, and we produce the change records, review history and test evidence they ask for.
A product owner who can decide within the week, access to the sandboxes and vendor accounts the work depends on, and your security and compliance contacts in the room from the first sprint.
Who touches production data
Where the code and the data live
How changes stay auditable
What we do about PCI scope
Access, devices and offboarding
Audit and due diligence support
What we need from your side
How a fintech build runs
What it takes to build, by system
Vendors answer this with 'it depends'. Here is what it depends on, by the kind of system, so you arrive at the first call knowing what to expect.
2-3 months
Number of rails, how well the provider documents its API, reconciliation rules, and how refunds, chargebacks and retries have to behave.
2-4 months
Vendors involved, document and biometric checks, manual review queues, and how much the rules differ by state or country.
5-8 months
Decisioning logic, the systems it reads from, servicing and collections scope, and the audit trail each decision has to leave.
6-9 months
Core banking integration, ledger design, mobile plus web, and the volume you have to hold at launch.
3-5 months
Number of systems, data quality on both sides, and whether the vendors have sandboxes you can actually test against.
6-12 months
Feature parity with what people use today, data migration and history, and running both systems in parallel during cutover.
Payment or processor integration
KYC and onboarding flow
Lending origination and servicing
Digital banking or wallet app
Integration layer between systems
Legacy platform modernization
Why fintech companies build with FusionHit
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Senior engineering talent
Vetted nearshore engineers with production experience in regulated financial systems and modern stacks.
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Real-time collaboration
Engineers on US Central and Eastern time, so an incident, a sponsor bank question or a security review gets answered the same day.
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Ready for the review
Security, access and change control handled as part of the engineering process, rather than added the week before an audit.
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Integrated partnership
One delivery lead accountable to you, working in your tools and reporting in writing every week.
Financial platforms we have worked on
AI-Augmented Development and Operations in a Multi-Team Enterprise
Challenge Multiple engineering teams working across Supply Chain and Support Services were operating in silos, each dealing independently with challenges around…
Embedding AI Across the Full Engineering Lifecycle
Challenge A product engineering team was managing growing codebases with increasing complexity around quality control, documentation, and cloud infrastructure. Code reviews…
Closing the Mobile Platform Gap Through AI-Accelerated Development
Challenge A mobile product team was running two parallel codebases — iOS and Android — but iOS development was consistently falling…
Three ways to work with us
Pick the model that fits how your team runs. Plenty of clients start with one and move to another as the roadmap grows.
Staff augmentation
Senior engineers added to your existing team, under your direction. Best when you have a technical lead and need capacity or a specific skill.
Dedicated development teams
A stable team that works only on your product, with a lead on our side. Best when you want a whole workstream owned without hiring a manager for it.
Software development outsourcing
A defined scope delivered end to end under our management, for a fixed price and date. Best when the scope is clear and you want one number and one date.
Stacks our fintech teams work in
The technologies behind the financial systems we build and maintain.
Other industries we build for
The same engineering standards, applied to the rules each industry runs under.
Healthcare
Clinical, patient and revenue systems built around HIPAA and the workflows clinicians actually use.
Insurance
Policy, quoting and claims platforms for carriers, MGAs and brokers.
SaaS
Multi-tenant products, platform rebuilds and the engineering behind a growing subscription business.
Logistics
Systems that run around the clock, from warehouse to last mile.
Retail
Commerce and store platforms sized for a peak season before it arrives.
Manufacturing
Plant, quality and supply systems that integrate with equipment nobody wants to touch.
FAQs about our fintech software development services
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How much does fintech software development cost?
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How long does it take to build a fintech product?
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How do you handle security and compliance during development?
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Do your engineers get access to our production systems or our customer data?
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Can you support us through an audit or a sponsor bank's due diligence?
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Have your engineers worked in regulated financial environments before?
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Can you integrate with our core banking system and our existing vendors?
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Who owns the code and the intellectual property?
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What happens if there is a production incident?
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Do we hire your engineers or do you deliver the project?
Ready to build your fintech product with a team that has done it before?
Tell us what you are building and which rails and rules it has to live with, and we will come back with a scope and a plan.
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