Principal AI Software Engineer

🕒 September 29

🇺🇸 United States – Remote

💵 $250k - $300k / year

⏰ Full Time

🔴 Lead

🧑‍💻 Full-stack Engineer

🦅 H1B Visa Sponsor

This company has sponsored H1B visas in the past.

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Walker & Dunlop

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 1937

💸 Finance

🏠 Real Estate

💰 $18M Post-IPO Equity on 2019-09

Finance • Real Estate

Walker & Dunlop is a leading provider of commercial real estate finance and advisory services. With over 85 years in business, the company has become one of the largest commercial real estate finance providers in the United States, offering a broad range of services including investment sales, loan servicing, and valuations. Walker & Dunlop also provides data-driven valuation and advisory services, leveraging their extensive network of capital sources and market insights to serve a wide array of property types such as multifamily, industrial, and retail. The company's approach combines large corporate capabilities with a boutique feel, supported by its robust technological infrastructure and diverse, experienced team.

📋 Description

• Own complex AI and platform initiatives end-to-end, delivering business-facing capabilities while strengthening the underlying context and agent platform • Design, build, and maintain agentic workflows for loan intake, document review, and servicing • Establish new platform patterns and capabilities by defining approaches, proving them through production use cases, and scaling them for broader adoption • Lead model selection and routing based on cost, latency, and quality • Design interfaces and capabilities for other teams, including MCP tool servers, agent handoffs, subagents, long-running state, and human-in-the-loop checkpoints • Establish evaluation and reliability practices, including evaluation sets, LLM-as-judge approaches, regression testing, and ongoing performance measurement • Identify risks, make technical trade-offs, and escalate when needed • Collaborate with and mentor colleagues while raising the engineering bar • Perform other duties as assigned

🎯 Requirements

• 12+ years of software development experience, including experience as a senior individual contributor delivering production systems • Bachelor’s or master’s degree in Computer Science or a related field, or equivalent experience • Extensive experience delivering production AI/ML systems, including LLM-powered applications and agentic workflows • Deep experience with modern agent frameworks and SDKs such as Claude Agent SDK, LangGraph, Pydantic AI, MCP, and A2A • Experience with prompt and context engineering, including RAG, embeddings, hybrid search, and reranking • Experience with model evaluation, observability, and guardrails for production AI systems • Experience using agentic development tools, including skills, subagents, and harness configurations • Experience in Real Estate, Financial Services, or Capital Markets preferred • Deep proficiency in Python and modern backend frameworks such as FastAPI • Strong expertise with SQL databases, including schema design, query optimization, and performance tuning • Experience testing non-deterministic systems, including LLM call fixtures, evaluation suites, and strategies for controlling flaky behavior • Experience with Event Sourcing and Domain-Driven Design principles • Excellent verbal and written communication skills • Ability to show ownership, take on challenges, acknowledge growth opportunities, and demonstrate patience when learning new processes • Courtesy, respect, and thoughtfulness when teaming with colleagues and stakeholders

🏖️ Benefits

• Up to 83% subsidized medical payroll deductions • Competitive dental and vision benefits • 401(k) + match • Pre-tax transit and commuting benefits • Robust health and wellness program with cash rewards and health resources • Paid maternity and parental leave • Other family paid leave programs • Company-paid life, short-term disability, and long-term disability insurance • Health Savings Account • Healthcare and Dependent Care Flexible Spending Accounts • Career development opportunities • Volunteer hours and donation matching • Opportunity to join one of Fortune Magazine’s Great Places to Work winners