ModernFi Tech Stack

Deposit network platform for banks and credit unions

Financial Services New York, NY 11–50 employees Founded 2022 Privately Held

ModernFi operates a deposit-management network connecting financial institutions to a multi-bank sweep and funding system. The stack is Python + FastAPI + React, deployed on AWS with infrastructure-as-code (Pulumi), revealing a backend-first architecture optimized for integrations and real-time fund flows. Active projects center on institution onboarding and bank integrations, while pain points cluster around client implementation friction and scaling the engineering org — typical of a fintech platform moving from founder-led builds to repeatable customer processes.

Tech Stack 13 technologies

Core StackPython FastAPI TypeScript React Vite Tailwind CSS Retool PostgreSQL AWS Pulumi Auth0 Datadog SQLAlchemy

What ModernFi Is Building

◆Challenges

Integration challenges
Maximizing platform value
Seamless technical onboarding
Self-service onboarding optimization
Client onboarding friction
Scaling engineering organization
Hiring and onboarding
Maintaining high technical bar
Integration with client systems
Technical implementation challenges

▲Active Projects

Institution activation process
Joint marketing activations
Backend services for core products and bank integrations
Technical onboarding of new institutions
Infrastructure setup for clients
Self-service onboarding tool optimization

Hiring Activity

Decelerating7 roles · 1 in 30d

Department

Sales

Engineering

Seniority

Manager

Director

Mid

Senior

Notable leadership hires: Director

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About ModernFi

ModernFi provides deposit management and sweep solutions to banks and credit unions of all sizes. The platform allows financial institutions to source deposits through a network of partner banks, manage customer funds across multiple institutions for security and yield, and streamline depositor onboarding. Founded in 2022 and based in New York, the company operates with a 11–50 person team split primarily between sales and engineering, with active projects focused on institution activation, self-service tooling, and backend integrations. The business model is B2B SaaS tied to deposit flows and network participation.

HeadquartersNew York, NY

Company Size11–50 employees

Founded2022

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does ModernFi use?

ModernFi's core stack is Python (FastAPI, SQLAlchemy) for backend services, TypeScript and React for frontend, PostgreSQL for persistence, and AWS for infrastructure. Pulumi handles infrastructure-as-code; Auth0 manages identity; Datadog monitors observability.

What is ModernFi working on?

Current projects include institution activation, self-service onboarding optimization, backend services for bank integrations, and technical infrastructure setup. Onboarding friction and integration challenges are primary operational bottlenecks.