Senior Engineer (Python)

Job Description:

Design and implement agent evaluation pipelines that benchmark AI capabilities across real-world enterprise use cases
Build domain-specific benchmarks for product support, engineering ops, GTM insights, and other verticals relevant to modern SaaS
Develop performance benchmarks that measure and optimize latency, safety, cost-efficiency, and user-perceived quality
Create search- and retrieval-oriented benchmarks, including multilingual query handling, annotation-aware scoring, and context relevance
Partner with AI and infra teams to instrument models and agents with detailed telemetry for outcome-based evaluation (Member of Technical Staff: AI Performance1)
Drive human-in-the-loop and programmatic testing methodologies for fuzzy metrics like helpfulness, intent alignment, and resolution effectiveness
Contribute to company's open evaluation tooling and benchmarking frameworks, shaping how the broader ecosystem thinks about SaaS AI performance

Requirements:

3 to 7 years of experience in systems, infra, or performance engineering roles with strong ownership of metrics and benchmarking
Fluency in Python and comfort working across full-stack and backend services
Experience building or using LLMs, vector-based search, or agentic frameworks in production environments
Familiarity with LLM model serving infrastructure (e.g., vLLM, Triton, Ray, or custom -Kubernetes-based deployments), including observability, autoscaling, and token streaming
Experience working with model tuning workflows, including prompt engineering, fine-tuning (e.g., LoRA, DPO, or evaluation loops for post-training optimization
Deep appreciation for measuring what matters - whether itʼs latency under load, degradation in retrieval precision, or regression in AI output quality
Familiarity with evaluation techniques in NLP, information retrieval, or human-centered AI (e.g. RAGAS, Recall@K, BLEU, etc.)
Strong product and user intuition - you care about what the benchmark represents, not just what it measures

Advantageous Skills: