Staff Applied AI/ML Software Engineer

Staff Applied AI/ML Software Engineer

Also open to senior-level software engineers (5+ years)

Location: Bellevue, WA | Hybrid: In the office 3 days per week | Employees: 150 | Industry: AdTech

Responsibilities

• Own the full software development lifecycle of LLM-powered systems, from requirements through production deployment and operational health
• Design and implement retrieval-augmented generation (RAG) systems, tool-use patterns, and multi-step reasoning workflows
• Integrate LLM-based services into the company's products, internal tools, and data ecosystem
• Drive architectural decisions balancing capability, cost, latency, and maintainability
• Establish evaluation frameworks and metrics to measure application quality and business impact
• Work with stakeholders to define product capabilities and build new features and integrations
• Champion excellence in coding, testing, and quality across the team and culture
• Mentor engineers on LLM application development patterns and best practices

Requirements

• 9+ years of experience in software engineering
• Experience designing and owning systems end-to-end, including 3-tier architectures, data flows, APIs, deployments, operations
• Strong Python programming skills
• Hands-on experience building LLM-powered features in production
• Experience with RAG architectures - vector databases, embedding models, retrieval strategies
• Practical prompt engineering skills, with demonstrated ability to iterate and evaluate quality
• Familiarity with core ML concepts (classification, evaluation metrics, embeddings) and the judgment to know when traditional ML outperforms LLM-based solutions
• Experience with agent frameworks and tool-use patterns (MCP, function calling)
• Familiarity with cloud environments (AWS preferred: EC2, S3, Bedrock)
• Self-starter who is organized, works independently, and is comfortable with ambiguity
• Experience collaborating with engineers and non-technical stakeholders

Benefits

• 100% employer-paid health, dental, and vision (including dependents and spouse/domestic partner), long-term disability and life insurance, 401(k) with company match, open PTO plus a birthday day off, 13 holidays, 5 recharge days, professional development reimbursement, cell phone, wellness, and internet reimbursement, fully paid parental leave (up to 22 weeks primary caregiver, 12 weeks secondary), and dog-friendly offices with pet adoption reimbursement

Compensation

• $170K - $260K
• Annual bonus and RSU participation