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💼 Full-time🗓 2026-06-25

Core

Building a scalable financial platform and web/mobile applications to help homeowners track expenses, automate payments, and identify savings opportunities.

Role type

Software Engineer (Full Stack)

Builds

Payments infrastructure, web and mobile applications, AI-powered data pipelines

Domain

Fintech / Consumer Finance

Deliverable

production ML models | product features

Required skills

Computer science fundamentals, clean code practices, modern programming languages, web technologies, problem-solving

Preferred skills

Fintech experience, billing systems experience, financial data handling

Technologies

JavaScript, TypeScript, React, Node.js, Python

Responsibilities

Building and maintaining a robust, scalable, and secure financial platform; Developing web and mobile applications for expense tracking and payment automation; Creating AI-powered data pipelines to transform customer data into insights

Seniority

Individual Contributor

Rewrite
## About the Role Castle is the finance app that saves homeowners time and money. Homeowners use Castle to pay for and track all of their home expenses in one place. Castle then monitors those transactions for opportunities to save. The average Castle customer saves more than $10,000 on their home. Housing affordability is a major problem in the U.S. At Castle, we believe that homeowners deserve better data when it comes to managing their biggest asset. We're building payments infrastructure for the largest consumer category in the U.S. — to help people automate, consolidate, and reduce their spend. In this role you'll be a foundational and versatile member of our engineering team, focused on building a simpler, smarter, and more intuitive experiences for homeowners. You'll collaborate closely with our Head of Engineering, Head of Design, and fellow engineers to bring to life a user-friendly app that clarifies complex home expense management and builds long-term trust with our customers. This role is perfect for someone who is passionate about solving complex problems and excited to learn new technologies. You'll have an opportunity to shape a powerful product at an early-stage, high-growth company. ## Core Responsibilities Include - Building and maintaining: - A robust, scalable, and secure financial platform; - Web and mobile applications that help homeowners track, understand, and pay for their home expenses; - AI-powered data pipelines that transform customer data into insights, including finding savings opportunities. ## What You'll Need - Strong computer science fundamentals and problem-solving skills. - Ability to write clean, maintainable, and well-tested code. - Curiosity to learn new technologies and tackle ambiguous challenges. ## Qualifications - Bachelor's degree in Computer Science or a related field (or equivalent practical experience). - Experience with modern programming languages and web technologies (e.g., JavaScript/TypeScript, React, Node.js, Python, etc.). - Bonus: experience in fintech, billing systems, or working with financial data. www.getcastle.com
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