Software Development for Finance

Secure, compliant financial software — from core banking modernization to fraud detection — engineered to meet the demands of regulators and the expectations of modern customers.

Overview

Financial institutions are asked to do something almost paradoxical: modernize at the speed of a fintech startup while carrying the regulatory and operational weight of a regulated bank. TechNova has spent years inside that tension, helping banks, payment processors, and fintech platforms replace brittle, decades-old infrastructure with systems that are faster, safer, and provably compliant.

We don't treat compliance as paperwork bolted on at the end of a project. PCI DSS, SOC 2, and the patchwork of regional financial regulations shape our architecture decisions from the first design review — access controls, encryption, and audit trails are structural, not cosmetic. That discipline is what lets us move quickly on core banking modernizations that most teams consider too risky to touch.

Our engineers have shipped fraud detection systems that score transactions in milliseconds, payment infrastructure that processes peak-volume trading days without blinking, and core banking migrations executed with zero customer-facing downtime. If your financial software needs to satisfy examiners, scale under real transaction load, and still feel modern to the end user, that's the exact intersection we build for.

Challenges

What makes this industry different

Modernizing core banking systems running on decades-old mainframe infrastructure without service interruptions
Meeting PCI DSS, SOC 2, and evolving regional financial regulations across multiple jurisdictions
Detecting fraud in real time without introducing friction into legitimate customer transactions
Integrating with legacy payment rails, card networks, and third-party banking APIs
Maintaining sub-second transaction performance while scaling to millions of concurrent users
Proving auditability and data lineage for every transaction to satisfy regulators and internal risk teams
Our Approach

How we solve for it

Core banking modernization

We decompose monolithic banking cores into resilient, API-first services using strangler-fig migration patterns that eliminate downtime risk.

Compliance-first engineering

SOC 2, PCI DSS, and regional regulatory requirements are treated as architectural constraints from the first design review, not late-stage checklist items.

Real-time fraud detection

Machine learning pipelines that score transactions in milliseconds, tuned to minimize false positives that frustrate legitimate customers.

Secure payment infrastructure

PCI-compliant payment processing and tokenization systems built to integrate cleanly with card networks and open banking APIs.

High-throughput transaction systems

Event-driven architectures engineered for consistency and horizontal scale under peak trading and payment volumes.

Audit-ready data lineage

Immutable transaction logs and data lineage tooling that make regulatory reporting and internal audits fast instead of painful.

Relevant Technologies

Common technology choices

Java/SpringKafkaPostgreSQLAWSReactgRPCPlaid/Open Banking APIsKubernetes

Ready to modernize your finance systems?

Talk to a solutions architect who understands the constraints of your industry.