Saaf Finance is looking for a Senior Engineer (Full Stack) to design and build the core application layer powering AI-driven mortgage underwriting, automation, and operational workflows. You'll work directly with founders and engineering leadership to shape how AI transforms the mortgage industry, backed by the expertise of a $10 Billion+ New York-based investment fund.

What You'll Do

Design, develop, and maintain scalable software solutions that automate mortgage-related processes and support user collaboration.
Work closely with founders, senior engineers, and design teams to translate customer needs into effective, practical software.
Shape engineering strategy and contribute to new product features and team planning.
Design and maintain scalable systems, APIs, and services that are easy to update, expand, and secure.
Design, implement, and document RESTful and/or GraphQL APIs that are robust and secure.
Ensure data integrity, security, and governance across applications, following best practices.
Foster a security-first mindset in all development activities.
Break down large projects into manageable tasks, ensuring team clarity and alignment.
Encourage documentation and knowledge sharing to promote collaboration.
Create an environment where everyone feels safe to express ideas and is open to new perspectives.
Guide and support team members, helping to build skills and ensure mutual coverage.
Use thorough debugging and troubleshooting methods to resolve software issues.
Set up and enhance monitoring to improve service stability and performance.

What We're Looking For

5+ years of experience as a Full Stack Developer, with experience spanning both frontend and backend development.
3+ years of experience with frontend JavaScript frameworks such as React or Angular, and backend technologies like NodeJS.
Strong experience designing and implementing APIs (RESTful and/or GraphQL), including versioning, documentation, and security best practices.
Proficiency in SQL and NoSQL databases such as Postgres, MongoDB, or MySQL.
Solid understanding of the software development life cycle and Agile methodologies.
Proven experience leading a team or architecting a large-scale enterprise product.
Exceptional problem-solving, debugging, and software design skills.
Excellent written and verbal communication skills.
Self-driven with a strong work ethic and passion for excellence.
Ability to work effectively both independently and as part of a team.

Nice to Have

Strong understanding of AWS infrastructure and hands-on experience with services such as Serverless Framework, Lambda, and CloudFormation.
Experience working with Terraform.
Knowledge of design patterns, data structures, and distributed systems.
Experience with data engineering (pipelines, ETL workflows, data architecture).
Experience using LLM-based coding tools and prompt engineering for code generation, refactoring, or documentation.
Prior early-stage startup experience is highly preferred.