Senior Software Engineer

Walker & Dunlop is one of the largest providers of capital to the commercial real estate industry, committed to creating meaningful social, environmental, and economic change in communities. The Senior Software Engineer will shape the future of the Loan Origination and Servicing platform by designing and building scalable applications that provide real-time insights and support complex financial workflows.

Responsibilities:

• Design, build, and maintain scalable, high-quality applications across new and existing product lines
• Own features end-to-end — from architecture and development through testing, deployment, and iteration
• Architect and evolve our core stack (Python, FastAPI, Vue.js, PostgreSQL, Redis, Docker, Kubernetes)
• Translate complex business and product requirements into elegant, reliable technical solutions in collaboration with Product and business stakeholders
• Drive improvements in performance, reliability, testing, and CI/CD practices
• Mentor engineers and contribute to a culture of engineering excellence and accountability
• Perform other duties as assigned

Requirements:

• 6+ years of professional software development experience
• Bachelor's degree in Computer Science or a related field (or equivalent practical experience)
• Strong experience building APIs and backend services in Python, including OpenAPI-based service contracts
• Experience developing and deploying containerized applications in AWS environments, including event-driven architectures
• Deep proficiency in Python (3.6+) and modern backend frameworks such as FastAPI, with a strong focus on clean, maintainable architecture
• Strong expertise in SQL databases, including schema design, query optimization, and performance tuning
• Ability to design efficient, scalable backend systems, including background processing, queues, caching strategies, and scheduled jobs
• Strong understanding of testing strategies across unit, integration, and end-to-end levels
• Working knowledge of system design documentation practices, including UML and architectural diagrams
• Familiarity with event sourcing and/or Domain-Driven Design (DDD) principles
• Ability to leverage AI-enabled development tools to enhance design, implementation, and testing workflows
• Demonstrated ownership mindset with a commitment to quality, accountability, and continuous improvement
• Agile mindset with the ability to work independently, provide early feedback, and adapt to evolving requirements
• Ability to show ownership of your work, take on challenges and acknowledge growth opportunities, and demonstrate patience when learning new processes
• Courtesy, respect, and thoughtfulness in teaming with colleagues and other stakeholders
• Experience in real estate finance or financial services preferred