Senior Machine Learning Engineer

Observability & Security

Evaluation & Quality

Technical Skills

• Python Stack: Proficiency with pydantic v2, pandas/polars, fastapi, boto3, asyncio, and prompt-template libraries
• Foundation Models: Hands-on experience with prompt engineering, structured output generation, and evaluation harnesses for LLMs
• AWS Services: Production experience with Lambda, API Gateway, Step Functions, EventBridge, SQS, SNS, ECS Fargate, Aurora PostgreSQL, DynamoDB, S3, and AWS CDK
• Vector Search: Practical knowledge of OpenSearch Serverless, k-NN algorithms, hybrid retrieval, and ranking optimization
• Machine Learning: Experience with scikit-learn, clustering algorithms, and confidence calibration techniques
• Healthcare Standards (preferable) : Working knowledge of FHIR R4, HL7 v2, USCDI, LOINC, SNOMED, and RxNorm
• Security: Strong understanding of IAM, KMS, secrets management, and OWASP security principles

Experience

Soft Skills

• Strong problem-solving abilities and attention to detail
• Excellent communication skills for collaborating with cross-functional teams
• Self-motivated with ability to work independently and drive projects to completion
• Commitment to code quality, testing, and engineering best practices

Preferred Qualifications

• Experience with Amazon Bedrock and Claude family models
• Familiarity with HIPAA compliance requirements and healthcare security standards
• Contributions to open-source ML or healthcare interoperability projects
• Degree in Computer Science, Machine Learning, or related field
• Additional Information:
• ELLKAY is committed to fostering a collaborative and high-performance work environment that supports innovation, teamwork, and professional growth. Most roles are designed to operate from our office locations to encourage effective collaboration and engagement across teams. Any alternative work arrangements may be considered at the company’s discretion based on role requirements and business needs. For more information about our company, please visit www.ELLKAY.com . ELLKAY is a Smoke-Free Workplace.
• ELLKAY, LLC provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.