Senior Software Engineer

Rotterdam Innovation City; United States; Hybrid; USD 160,000 - 180,000; Full time

Benefits offered by this job

Up to 83% subsidized medical payroll deductions

401(k) + match

Paid maternity and parental leave

Health and wellness program

Job summary

A leading technology firm is seeking a Senior Software Engineer to enhance its Loan Origination and Servicing platform. You will design and develop scalable applications that support real-time insights and financial workflows. The ideal candidate will have over 6 years of software development experience, particularly in Python and backend frameworks, and be committed to delivering high-quality solutions. This role offers a competitive salary and comprehensive benefits package.

Qualifications

• 6+ years of professional software development experience.
• Strong experience in building APIs and backend services in Python.
• Experience developing and deploying containerized applications.

Responsibilities

• Design, build, and maintain scalable, high-quality applications.
• Own features from architecture through deployment.
• Mentor engineers and contribute to engineering excellence.

Skills

Python

Backend frameworks

SQL databases

APIs

Agile mindset

Education

Bachelor’s degree in Computer Science or related field

Tools

FastAPI

AWS

Docker

Kubernetes

Job description

Department

WDTech - R&D

We are Walker & Dunlop. We are one of the largest providers of capital to the commercial real estate industry, enabling real estate owners and operators to bring their visions of communities — where people live, work, shop, and play — to life. We are committed to creating meaningful social, environmental, and economic change in our communities.

Department Overview

WDTech is W&D’s in-house technology team – a group of collaborative and highly skilled technology professionals, all of whom are leading experts in real estate data, data science, and technology.

WDTech Engineering builds solutions that impact not only our products but also the people and processes across our organization. A commitment to innovation and a passion for disrupting the old-fashioned real estate industry are our highest priorities.

The Impact You Will Have

As a Senior Software Engineer, you will help shape the future of our Loan Origination and Servicing platform — the digital foundation for how capital is structured and deployed. You will design and build scalable applications and services that power real-time insights and complex financial workflows. By combining strong backend architecture with thoughtful system design, you will deliver high-performance solutions that enable smarter decision‑making across the business.

Primary 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.

Education and Experience

• 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.
• Experience in real estate finance or financial services preferred.

Knowledge, Skills and Abilities

• 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.

This position has an estimated base salary of $160,000 - $180,000 plus a discretionary bonus. An employment offer is based on the applicant’s relevant work experience, applicable knowledge, skills, abilities, internal equity, and alignment with market data.

What We Offer

• The opportunity to join one of Fortune Magazine’s Great Places to Work winners from 2015-2023

• Comprehensive benefit options* that have earned Walker & Dunlop the silver level of the 2022 Cigna Healthy Workforce Designation™, some of which include:

  • Up to 83% subsidized medical payroll deductions
  • Competitive dental and vision benefits
  • 401(k) + match
  • Pre-tax transit and commuting benefits
  • A robust health and wellness program – earn cash rewards and gain access to resources that promote health, engagement, and balance
  • Paid maternity and parental leave, as well as other family paid leave programs
  • Company-paid life, short and long-term disability insurance
  • Health Savings Account and Healthcare and Dependent Care Flexible Spending
• Career development opportunities
• Empowerment and encouragement to give back – volunteer hours and donation matching

*Eligibility may vary based on average number of hours worked

EEO Statement

We are committed to equity in all steps of the recruitment and employment experience. We believe in equal access to opportunities in our workplace. We do not tolerate discrimination, including harassment, based on any characteristic protected by applicable law, such as race, color, national origin, religion, gender identity, sexual orientation, sex, age, disability, veteran or military status, and genetic information, or any other characteristic protected by applicable law. We strive to be a safe place to ask questions, build professional relationships, and develop careers.