Backend Engineer (Node.js/TypeScript) - SaaS APIs

The Mortgage Office (Applied Business Software Inc.); San Mateo (CA); Hybrid; USD 150,000 - 170,000; Full time

Benefits offered by this job

401(k) matching

Wellness programs

Employee recognition programs

Team building & on-site amenities

Job summary

The Mortgage Office is seeking a Back-End Engineer to build scalable backend services in Node.js/TypeScript and contribute to the frontend with React. You will work across REST and GraphQL APIs, collaborating with designers and product managers to deliver polished user experiences.

Ideal candidates have 3+ years of full-stack experience, proficiency in TypeScript, and a track record of end-to-end feature delivery.

Qualifications

• 3+ years of professional, post-college software engineering experience as a full-stack developer.
• Strong proficiency in TypeScript across backend and frontend codebases.
• Extensive experience developing backend services using Node.js, including RESTful APIs, GraphQL, and microservices.
• Hands-on experience with relational and/or NoSQL databases, including schema design, migrations, and performance-conscious query development.
• Experience implementing authentication and authorization flows across backend APIs and frontend applications.
• Familiarity with performance optimization on both frontend and backend, including caching strategies and frontend rendering optimizations.
• Ability to deliver features end-to-end, from API and data model design through frontend integration and user experience.

Responsibilities

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

Skills

Node.js

TypeScript

React

GraphQL

REST APIs

SQL/NoSQL

Authentication/Authorization

Performance optimization

End-to-end delivery

Tools

Axios/Fetch

Web performance

Job description

The Mortgage Office is seeking a Back-End Engineer to build scalable backend services in Node.js/TypeScript and contribute to the frontend with React. You will work across REST and GraphQL APIs, collaborating with designers and product managers to deliver polished user experiences.

Ideal candidates have 3+ years of full-stack experience, proficiency in TypeScript, and a track record of end-to-end feature delivery.