Senior Full Stack Engineer
About This Role
Saaf Finance is building the AI workforce for the mortgage industry. We are an AI startup integrated with a top-10 mortgage lender, American Heritage Lending (AHL). Together we are combining AHL’s 15+ years of mortgage origination expertise with the power of AI-native innovation to redefine what’s possible in mortgage lending.
As a Full Stack Engineer at Saaf Finance , you will design and ship software that automates complex mortgage workflows while collaborating closely with founders, engineers, and design. We are an AI-native engineering team: AI-assisted development tools are a regular part of how we build, review, and ship software. We expect engineers to use these tools thoughtfully and effectively as part of their daily workflow.
Responsibilities
Product & Engineering
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Design, develop, and maintain scalable software solutions that automate mortgage-related processes and support collaboration among end users.
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Work closely with founders, senior engineers, and design teams to translate customer needs into effective, practical software.
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Shape engineering strategy and contribute to new product features and team planning.
Architecture & APIs
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Design and maintain scalable systems, APIs, and services that are easy to update, expand, and secure.
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Design, implement, and document RESTful and/or GraphQL APIs that are robust, secure, and easy to use.
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Ensure data integrity, security, and governance across applications, following best practices for data management and compliance.
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Foster a security-first mindset in all development activities.
AI-Integrated Development
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Leverage AI-assisted development tools (code generation, intelligent autocomplete, automated refactoring) as a regular part of your workflow to accelerate delivery and improve code quality.
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Use AI tools to support documentation, code review, test generation, and knowledge sharing across the team.
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Evaluate and integrate emerging AI development tools and practices, helping the team continuously improve how we build software.
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Apply AI-assisted analysis to debugging and troubleshooting workflows where appropriate.
Team & Process
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Break down and organize large projects into manageable tasks, ensuring clarity and alignment within the team.
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Encourage documentation and knowledge sharing to promote collaboration and onboarding.
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Create an environment where everyone feels safe to express ideas and disagreements, and is open to new perspectives.
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Ensure team discussions focus on organizational goals and strategies.
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Regularly review and improve team methods and workflows.
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Guide and support team members, helping to build skills and ensure mutual coverage.
Reliability & Operations
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Use thorough debugging and troubleshooting methods to resolve software issues.
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Set up and enhance monitoring to improve service stability and performance.
Qualifications
Required
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5+ years of experience as a Full Stack Developer, with experience spanning both frontend and backend development.
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3+ years of experience working with frontend JavaScript frameworks such as React or Angular, and backend technologies like NodeJS (these may overlap).
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Strong experience designing and implementing APIs (RESTful and/or GraphQL), including versioning, documentation, and security best practices.
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Demonstrated, regular use of AI-powered development tools (e.g., Cursor, GitHub Copilot, Claude Code, or similar) to accelerate coding, debugging, or documentation workflows.
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Proficiency in SQL and NoSQL databases such as Postgres, MongoDB, or MySQL.
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Solid understanding of the software development life cycle and Agile methodologies.
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Proven experience leading a team or architecting a large-scale enterprise product.
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Exceptional problem-solving, debugging, and software design skills.
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Excellent written and verbal communication skills.
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Self-driven with a strong work ethic and passion for excellence.