Upwork - Contract: Senior AI Engineer

• Strong software engineering background building production systems (Python, APIs, distributed services). • Experience evaluating NLQ or LLM-based systems, including precision/recall and semantic correctness. • Hands-on expertise designing automated test frameworks and evaluation pipelines. • Experience with cloud-native architectures, CI/CD, and production deployment of AI systems. • Knowledge of semantic modeling, ontologies, or knowledge graphs in data-driven applications. • Proven ability to design scalable, reliable systems bridging AI models, data platforms, and applications. • Upwork is proudly committed to fostering a diverse and inclusive workforce. We never discriminate based on race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical condition), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. • Additionally, to the extent permitted under applicable law, a criminal background check may be required as a condition of engagement. • We use BrightHire, an AI-enabled tool, to record interviews and summarize interview transcripts. The tool allows the interviewer to focus on the discussion and does not score or evaluate talent or make recommendations. The interview transcripts are reviewed, and decisions are only made by humans. Any individual who prefers not to have their interview recorded through BrightHire can opt out when the interview is scheduled. • To learn more about how Upwork processes and protects your personal information as part of the application process, please review our Global Job Applicant Privacy Notice