Banking Software Development Company
FISTA Solutions builds digital banking channels, core banking integration layers, account opening and onboarding, back-office tooling, and supervised AI agents for banks and credit unions. Systems are engineered for examination readiness, resilience, and accessibility, and integrate with the core you already run.
- 150+
- projects delivered
- 50+
- companies served
- 99.9%
- verified uptime
- 47%
- efficiency gains
- 12+
- countries reached
What we build
What does a banking software development company build?
FISTA builds digital banking web and mobile channels, digital account opening, core integration and middleware layers, back-office and servicing consoles, data and reporting pipelines, and AI agents for support, document handling, and exception queues under supervisory controls.
- 01
Digital banking channels
Web and mobile banking experiences with strong authentication, entitlements, alerts, and accessibility built to WCAG 2.1 AA.
Channels - 02
Digital account opening
Application, identity verification, funding, and disclosure delivery flows designed to reduce abandonment without loosening controls.
Onboarding - 03
Core integration middleware
A stable API layer over the core so channel teams stop coupling directly to file formats and batch windows.
Integration - 04
Back-office consoles
Servicing, dispute, exception, and maintenance tooling that replaces spreadsheets and screen-scraping with audited workflow.
Operations - 05
Data and regulatory reporting
Pipelines and warehouses that produce consistent numbers for management reporting, examinations, and analytics.
Data - 06
Supervised AI agents
Support answering, document classification, and exception triage with read-only defaults, full traces, and human approval on member-facing actions.
AI
Requirements
Which requirements shape banking software development?
Banking systems must satisfy examiners, run through outages, and serve every customer. That means documented change control, strong authentication, resilient integration with a core that was not designed for real-time traffic, accessibility as a legal duty, and vendor-management evidence for everything you outsource.
| Requirement | What it means here | How FISTA builds to it |
|---|---|---|
| Examination readiness | Examiners ask for change control, access reviews, risk assessments, and vendor oversight evidence. | Documented SDLC with approvals, environment separation, access reviews, and an evidence pack produced per release. |
| Authentication and fraud | FFIEC guidance expects layered authentication and risk-based controls on high-risk transactions. | Multi-factor and step-up authentication, device and behavioral signals, transaction risk scoring, and clear customer recovery paths. |
| Core resilience | Cores impose batch windows, rate limits, and downtime that channels must survive. | Middleware with caching, queueing, idempotency, graceful degradation, and read-only modes during core maintenance. |
| Accessibility | Banking services must be usable by customers with disabilities. | WCAG 2.1 AA acceptance criteria, keyboard and screen-reader testing in CI, and accessible statements and disclosures. |
| Third-party risk | Your regulator holds you responsible for what your vendors do. | Documented architecture, data-flow diagrams, control descriptions, and cooperation with your vendor-management questionnaires. |
Where AI fits
Where do AI agents fit in banking?
AI agents fit banking in high-volume, low-authority work: answering customer questions from read-only data, classifying and extracting documents, triaging disputes and exceptions, and drafting internal summaries. Anything that moves money, changes an account, or denies a customer keeps a human approver.
- 01
Member and customer support agent
Answers account and product questions from read-only data with strict escalation on anything transactional or account-changing.
- 02
Document processing agent
Classifies and extracts from statements, identity documents, and loan files, citing the page and field behind every value.
- 03
Dispute intake agent
Collects the Regulation E dispute details, assembles evidence, and prepares the case for an analyst to decide.
- 04
Exception triage agent
Works reconciliation, posting, and file-transfer exceptions, proposing resolutions and escalating anything outside tolerance.
- 05
Internal knowledge agent
Answers staff procedure questions from approved policy documents with citations, reducing time spent hunting through intranets.
Cost and timeline
How much does banking software development cost, and how long does it take?
Cost is driven by core integration constraints, channel breadth, authentication and fraud requirements, and evidence obligations; timeline by core vendor scheduling and internal risk review. FISTA does not quote blind: the scoping call returns a specification, a phased plan, and an estimate.
Core integration is usually the deciding factor. If your core exposes modern APIs, channel work moves quickly; if it exposes nightly files and a batch window, the middleware that makes real-time experiences possible becomes its own project. FISTA assesses that in discovery and prices the middleware separately so you can decide how much of it to build now.
Internal governance is the other half of the schedule. Risk review, vendor management, change advisory boards, and penetration testing all take calendar time. The plan FISTA proposes includes those gates explicitly, because a build plan that ignores them is a plan that slips.
Send the scope you have, even if it is a paragraph. You get a written brief, an architecture sketch, and a phased estimate before any commitment.
Get a scoped quoteDelivery
How does FISTA deliver an industry software project?
FISTA delivers in four gated phases: a discovery sprint that produces the specification and integration map, an architecture and compliance design that names every control, iterative builds demoed weekly on your environment, and a verified release with runbooks, monitoring, and a handover or a managed operations option.
- 1
Discover and specify
Stakeholder interviews, system inventory, data classification, and a written specification with acceptance criteria and a phased plan.
OutputSpecification, integration map, estimate
- 2
Design for compliance
Architecture, data model, security controls, and the evidence plan for any audit, agreed before the first sprint.
OutputArchitecture decision record, control matrix
- 3
Build and demonstrate
Two-week sprints with automated tests, contract tests on integrations, and a demo on your environment every week.
OutputWorking increments in your repository
- 4
Verify and operate
Load, security, and acceptance testing against the spec; release with runbooks, dashboards, and alerting; optional managed operations.
OutputVerified release, runbooks, SLOs
Why FISTA
Why choose FISTA Solutions for banking software development?
FISTA builds bank channels on a middleware layer that protects you from core constraints, treats examination evidence as a deliverable, and keeps AI strictly supervised. Work is contracted through a US entity, with documentation your vendor-management and audit teams can actually use.
Banking specifics
- Middleware-first architecture so channel teams are insulated from core batch windows, rate limits, and outages.
- Release evidence — approvals, test results, access reviews — produced as a by-product of the process, not reconstructed before an exam.
- AI agents default to read-only, with human approval required for any account-changing or money-moving action.
- Accessibility and disclosure delivery treated as acceptance criteria on every customer-facing screen.
How FISTA engineers
- Spec-Driven Development: every deliverable starts as a written specification with acceptance criteria, so scope is testable before it is built.
- AI-native delivery: engineers direct coding agents under review gates and evaluation harnesses, compressing build time without loosening verification.
- Official Anthropic partner, with production experience across Claude, OpenAI, Google, and open-weight models, chosen per workload rather than by default.
- One accountable delivery lead, weekly demos on your environment, and code in your repositories from week one.
What you get as a client
- 150+ projects delivered for 50+ companies across 12+ countries since 2017, with 99.9% verified uptime on systems we operate.
- A US entity (FISTA Solutions Inc., Wilmington, Delaware) for contracting, invoicing, and IP assignment, with an engineering center in Faisalabad, Pakistan for cost-efficient senior capacity.
- US business-hours overlap for standups and reviews; written decision logs so nothing depends on a meeting you missed.
- Flexible engagement: fixed-scope build, embedded forward deployed engineers, or a dedicated team that you can scale month to month.
Clear answers
What buyers in this industry ask first.
Straightforward guidance for evaluating scope, fit, and the next step.
01Can FISTA integrate with our core banking platform?
Yes, through whatever interfaces your core and contract allow: REST APIs, SOAP services, message queues, or scheduled files. FISTA builds a middleware layer above them so your channels are not coupled to core-specific formats, batch windows, or outage schedules.
02How do you handle bank regulatory examinations?
By producing evidence as part of delivery: documented change control with approvals, environment separation, access reviews, test results, and architecture and data-flow documentation. Your examiners and vendor-management team receive material that was generated during the work, not assembled afterwards.
03Are AI agents safe to use in a bank?
When scoped correctly. FISTA deploys agents read-only by default, requires human approval for account or money actions, keeps full traces of every step, and evaluates behavior against a golden set before and after every change. Shadow mode runs before anything is customer-facing.
04Do you work with credit unions and community banks?
Yes. Smaller institutions typically start with a focused digital channel or an operations tool that removes a specific manual burden, delivered as a fixed-scope build. The same engineering standards apply regardless of institution size.
05Can you work alongside our existing digital banking vendor?
Yes. Many engagements add what the platform cannot do — a custom onboarding flow, an operations console, a data pipeline, or an agent — while leaving the vendor platform in place, with clean integration boundaries and no duplicated systems of record.
06How long does a digital banking project take?
A focused channel or operations release typically takes a few months, with core vendor scheduling, risk review, and penetration testing as common gating items. The discovery sprint puts dates on those dependencies before you commit.
Continue exploring
Related capabilities
Scoped in writing before you commit
Modernize the channel without destabilizing the core.
Bring the channel, the core constraint, or the operations burden. The scoping call returns a written specification, an integration design, and a phased estimate.