Salt Square

Financial services

Fintech platforms, delivered at startup speed.

We build the platform, harden it for production and move customers off the legacy system, using AI to keep a lean team fast.

Talk to our fintech team

What fintech teams need

Security that auditors accept, multi-tenant architecture that scales, and a migration off the legacy platform that customers barely notice.

Our work

For a New York fintech in retirement and wealth management, Salt Square is the core engineering team on a new multi-tenant retirement platform:

  • Multi-tenant management, a participant dashboard and production hardening, now in live internal use for payroll and retirement accounts
  • Modern authentication with SSO and refresh-token handling, with biometrics planned for mobile
  • Roughly 40 delivery automations in about two months and an AI QA agent for full-cycle coverage
  • Migration off the legacy platform, with legacy shutdown targeted for year-end

What we bring

Senior full-stack engineers, AI-assisted delivery with guardrails, and a team the client helps shape and can keep growing.

Start with one conversation.

Tell us the problem. A Salt Square leader replies within a few hours.

Let’s work together