Full Stack Software EngineerThe Mortgage Office (Applied Business Software Inc.,) • San Mateo, CA, United States

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Full Stack Software Engineer

The Mortgage Office (Applied Business Software Inc.,) • San Mateo, CA, United States

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Job Description

The Mortgage Office (TMO) is the leading B2B fintech platform serving the private lending industry. Our software helps private lenders, fund managers, municipalities, and non-profits originate and service over $200 billion in loans with speed, compliance, and scale. With more than 1,400 customers and over 40 years in business, TMO continues to evolve its products to meet the growing complexity and innovation of private lending and were investing in a design-driven approach to elevate how our users work and deliver value to their clients.

About the Role

We are seeking a Full-Stack Software Engineer with strong experience in TypeScript, React, and Node.js who will build the core user experience of our application.

This role will focus on developing high-quality, user-facing interfaces while also contributing to backend services that power our platform, supporting our continued growth as a SaaS business and strengthening internal processes, performance, and cross-team alignment.

What Youll Do

Build responsive, type-safe frontend interfaces using React and TypeScript
Develop and maintain backend services and APIs using Node.js and TypeScript to support frontend functionality
Partner with the core backend team to define API contracts and ensure efficient data fetching patterns (REST or GraphQL) for the frontend application
Collaborate with designers and product managers to translate requirements into intuitive, polished user experiences

Qualifications

5 years of professional experience as a full-stack or frontend-focused software engineer

Strong proficiency in TypeScript and React , with experience building production-grade web applications

Experience developing backend services using Node.js , including RESTful APIs, GraphQL, and Microservices

Solid understanding of modern web fundamentals : Hooks, state management, component architecture, and asynchronous programming

Nice to Have

Experience with modern frontend tooling (Vite, Webpack, ESLint, Prettier)

Familiarity with component libraries (e.g., Material UI, Tailwind CSS) to accelerate UI development

Proficient with database technologies (SQL or NoSQL) and writing server-side logic to support frontend requirements

Experience integrating complex APIs and visualizing data (e.g., using charting libraries or building interactive dashboards)

Why Join Us?

Full-time position based in San Francisco Bay Area with hybrid flexibility, (3 days in office).

Comprehensive health, dental, and vision coverage

401(k) with company funded match

Mission-driven company with a 45+ year legacy and industry-leading products trusted by thousands of lenders.

Collaborative, supportive team known for long tenure, deep expertise, and a culture built on trust and integrity.

Help modernize and evolve the leading platform in private lending technology.

Competitive compensation and room for professional growth

Performance-based bonuses

Generous PTO

Modern workspace with on-site amenities

Company Description

Applied Business Software, Inc. (ABS) is the creator of The Mortgage Office, the leading platform for private lending and loan servicing. Since 1978, weve built, sold, and supported powerful software used by lending institutions of all sizes around the world. The Mortgage Office is known for its stability, reliability, and the exceptional satisfaction of the clients who rely on it every day.

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Full Stack Software Engineer • San Mateo, CA, United States

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