Full-Stack Software Engineer (Backend-Leaning) - WFH

About the Role

Willow Processing is seeking a Full-Stack Software Engineer (Backend-Leaning) to modernize the systems supporting its loan processing operations and build integrations with lending partners. This role is suited to an engineer with strong backend experience who can also contribute to frontend development and take ownership of features from initial planning through deployment and monitoring.

You will work closely with a small team and operations staff to build backend services, partner-facing APIs, web interfaces, and AI-powered automation for internal workflows. The role also involves migrating data and business logic from legacy systems while maintaining live operations. The position offers the opportunity to make independent technical decisions and take responsibility for meaningful work from day one.

Key Responsibilities

• Own features end to end, including scoping, design, development, deployment, and monitoring.
• Collaborate with teammates and operations staff on larger projects.
• Build backend services and APIs for lending partners.
• Develop and improve web interfaces used by staff and users.
• Build AI-powered automation for internal workflows, incorporating appropriate guardrails and human review.
• Migrate data and business logic from legacy systems without disrupting live operations.
• Make technical decisions independently and maintain progress without waiting for direction.

Required Qualifications

• At least 3 years of professional software engineering experience with a strong backend focus.
• Experience with TypeScript/Node.js or Python, ideally.
• Solid frontend development skills using a modern framework such as React or Next.js.
• Production experience designing and operating APIs, including authentication, idempotency, retries, and observability.
• Strong relational database and data migration skills.
• Hands-on experience building with AI tools, including LLM APIs, prompt design, tool use, or agent workflows, ideally in Python.
• Good judgment about where AI-powered workflows require checks and safeguards.
• Experience taking projects from initial ideas through production.
• Ability to collaborate effectively on shared work.
• Comfort working with ambiguity and at a fast pace.
• Clear written communication skills for remote collaboration.

Preferred Qualifications

• Experience shipping AI features in production.
• DevOps experience, including CI/CD, infrastructure as code, and deployment automation.
• Experience in fintech, lending, or mortgage industries.
• Experience working in a startup or small-team environment.

Salary

• Annual compensation: $85,000–$95,000.

Interview Process

• 15-minute screening call.
• One-hour technical interview with situational questions about approaching real-world problems. No live coding or take-home assessment.
• Final conversation with the founder.

Work Arrangement & Eligibility

• Fully remote.
• Open to candidates based in the United States who are authorized to work in the country without sponsorship.

Application Process

Apply through LinkedIn and answer the screening questions honestly. Applications are reviewed by the team. Selected candidates will receive a few short written questions by email, so applicants should ensure their LinkedIn profile includes a current email address.