Financial Software Development for Banks, Insurers, and Fintech
Secure, scalable financial software built by nearshore teams that move at fintech speed and pass bank-grade audits. Modernize core systems, reduce risk, and ship under compliance.
Next starts here.
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When Modernization Stalls, Compliance Costs Compound
Most financial institutions don’t fail at modernization for lack of strategy, they fail because the strategy was approved without the engineering muscle to sustain it. Core banking migrations stretch for years. Compliance evidence gets reconstructed after the fact.
Our financial software development services start with what’s actually broken. Nearshore engineers embed with your team to rebuild the delivery rhythm with SOC 2, PCI DSS, AML/KYC, and GDPR continuity from day one.
What We Offer
in Financial Services
Four service lines, designed to plug in at any stage of your modernization journey; from a single product squad to enterprise-wide core replacement.
Core Banking Modernization
Embedded engineering teams that modernize legacy cores on cloud-native foundations without breaking SOC 2, PCI DSS, or GDPR continuity. We integrate at the API, middleware, and data layer.
Outcome: faster product launches, audit-ready releases, and a core that no longer blocks the roadmap.
Custom Fintech Software Development
Production-grade fintech and BaaS platforms built for scale: KYC at onboarding, real-time payment processing, fraud detection, and BaaS infrastructure that holds up under 10M+ users. Built for the latency, uptime, and regulator readiness payments teams actually run.
Outcome: a platform that scales when your users do, with compliance baked into the architecture.
Insurance Platform Engineering
Engineering for carriers and insurtechs modernizing claims, underwriting, and policy admin. We rebuild around AML/KYC, GDPR, and HIPAA-adjacent compliance from day one — not as a retrofit. Actuarial dependencies stay intact. Claims latency drops.
Regulatory Compliance Engineering
SOC 2, PCI DSS, AML/KYC, and GDPR built into the delivery pipeline — not added after the audit calendar shows up. Available as a standalone engagement for compliance remediation, or embedded into any of our other service lines.
How Our Financial Software Development
Services Work
Step 01
Diagnose
An embedded audit. We sit in your engineering rituals, map the actual flow of work, and inspect the systems that block delivery; legacy cores, compliance bottlenecks, integration debt. You get a written diagnostic with friction points, root causes, and a prioritized roadmap mapped to your regulatory calendar.
Step 02
Build
Senior nearshore engineers and FS specialists join your teams under one of our four engagement models: Outcomes (we own delivery), Teams (we run a self-managed squad), Capacity (we add senior engineers to your existing org), or Managed Services (we run the operation end-to-end). You choose the shape; we bring the depth with engineers who’ve shipped in regulated environments before.
Step 03
Operate
We hand off measurable practices (not a 200-page playbook). Compliance dashboards, control evidence pipelines, and a coached transition so the delivery rhythm holds after we leave. Most engagements graduate into long-term partnerships across the modernization journey.
Most engagements graduate into long-term partnerships.
Industries We Serve
Retail & Commercial Banks
Core banking modernization for retail and commercial banks operating under OCC, FDIC, and global regulatory frameworks. We rebuild legacy cores on the cloud without breaking compliance continuity.
Fintech & Payments
Custom fintech software development for neobanks, payment platforms, and BaaS infrastructure. Production-grade engineering that scales with your user base and your regulator’s expectations.
Insurance & Insurtech
Insurance platform engineering for carriers and insurtechs modernizing claims, underwriting, and policy admin with AML/KYC and HIPAA-adjacent compliance baked into delivery.
Wealth Management
Wealth platforms built for advisors, RIAs, and private-bank infrastructure. Portfolio engineering with SOC 2 controls, fiduciary-grade audit trails, and integrations to custodial systems.
Credit Unions
Member-owned institutions modernizing legacy systems on tighter budgets. We scope to mission, not to enterprise headcount and we deliver the same audit-ready engineering.
RegTech & BaaS Providers
Compliance and infrastructure platforms where the product is regulatory accuracy. We build the systems your customers stake their license on.
Four Ways to Work
with Our Financial Engineering Teams
You don’t buy financial software development by the hour. You buy the shape of delivery that fits where your institution actually is right now.
Outcomes
We own a defined business outcome end-to-end discovery, build, and release.
Best for: a stalled product, a missed deadline, or a transformation initiative that needs adult supervision.
Teams
A self-managed nearshore agile pod, embedded inside your engineering org. We bring the team; you bring the product context.
Capacity
Senior engineers and agile coaches added to your existing teams. You manage; we strengthen.
Best for: filling specific skill gaps or accelerating a roadmap where the structure already works.
Managed Services
We run the operation end-to-end delivery, support, and continuous improvement; under defined SLAs.
Best for: ongoing product or platform work where you want predictable outcomes without managing the day-to-day.
Why Financial Institutions Stay With Us
The Nearshore Advantage
That Delivers Results
We combine the cost benefits of offshore with the collaboration ease of onshore.
Our teams across the Americas corridor work in your timezone, speak your language, and understand your culture.
Timezone Collaboration
Work with teams who share your working hours. No late-night calls or delayed responses.
Rapid Team Assembly
Get your dedicated team up and running in 2–4 weeks, not months. We match talent to your specific needs.
Enterprise Quality
Our engineers are rigorously vetted and trained in best practices used by Fortune 500 companies.
Scalable Solutions
Start small and scale up seamlessly. Our flexible engagement models adapt to your changing needs.
Cultural Alignment
Strong cultural affinity with US business practices ensures smooth communication and collaboration.
24/7 Operations
Your success is our priority. Get dedicated account management and 24/7 operations when you need it.
Verified Reviews
Average Review Rating
Recognition
Inc. 5000
Fastest Growing Companies
10 time recipient
Portland's Fastest Growing
Portland Business Journal
10 years in a row
Clutch
Top 5 Nearshore Software Developers in Mexico
2025
Partners
AWS Partner Network
Amazon Web Services
Databricks Partner
Data + AI Platform
Ready to Modernize Without Breaking Compliance?
Book a 30-minute diagnostic with one of our senior financial engineers. No deck, no sales pitch, we’ll review one specific friction point in your delivery (a stalled core migration, a failing audit, a fintech that won’t scale) and tell you what we’d do about it.
Frequently Asked Questions About Financial Software Development
What are financial software development services?
Financial software development services are advisory and embedded engineering engagements that help banks, fintechs, insurers, and wealth platforms build, modernize, or scale software under regulatory constraints. At unosquare, this includes core banking modernization, custom fintech development, insurance platform engineering, and regulatory compliance engineering delivered by senior nearshore teams with audit experience built in.
How long does a core banking modernization take?
It depends on scope and migration strategy.
Why nearshore financial engineering instead of onshore or offshore?
Time zones decide whether financial delivery actually works. Offshore teams break the daily standup and miss the regulatory call window; onshore teams cost three to four times more for the same engineering depth. Our nearshore squads operate in U.S.-aligned time zones, which means real-time architecture decisions, same-day compliance reviews, and audit responses that don’t wait twelve hours for a reply.
Can you work with our existing core?
Yes. We have active integrations with Fiserv DNA, FIS Hogan and Profile, and Jack Henry SilverLake. We work at the API and middleware layer for transactional flows, and at the data layer for analytics and reporting modernization. No greenfield assumptions, we meet the core where it lives.
How do you handle SOC 2, PCI DSS, and AML/KYC during a migration?
We embed control evidence into the delivery pipeline. Every change ships with audit logging, access controls mapped to your framework, and segregation-of-duties enforced in tooling. During a migration, we maintain control continuity in parallel run, there is no compliance gap between legacy and modernized systems.
Do you sign BAAs and DPAs?
Yes. We sign Business Associate Agreements (BAAs) for healthcare-adjacent insurance work and Data Processing Agreements (DPAs) for any engagement processing personal data under GDPR or CCPA. Both can be in place within five business days of the master agreement.
How do you measure success in a financial engineering engagement?
Four metrics, agreed up front: cycle time (how long work moves from start to release), deployment frequency (how often you ship safely), change failure rate (how often releases need a regulatory rollback), and audit pass rate (how often releases survive internal and external review without rework).
Which engagement model should we choose: Outcomes, Teams, Capacity, or Managed Services?
Pick Outcomes if you have a specific business result that needs to be delivered and you’d rather hand it off completely.
Pick Teams if you need to scale delivery capacity without adding internal management. Pick Capacity if your structure works and you just need senior engineers plugged into existing teams.
Pick Managed Services if you want us to run the operation end-to-end under defined SLAs, so you can focus on the business instead of the day-to-day.
Most clients start with one model and graduate into another as the relationship deepens.
Do you do agentic AI in regulated financial services?
Yes, with audit-grade guardrails. We build agentic systems for claims triage, underwriting assist, fraud detection, and customer-facing copilots. Every agent ships with input/output logging, human-in-the-loop checkpoints, model versioning, and policy mapping to your AI governance framework. We do not deploy agents in regulated FS without a compliance review.