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Sema4.aiSema4.ai

Tech Lead, Agentic Engineering

Hands-on technical lead architects and implements AI agent framework using LLMs and advanced GenAI techniques. Mentors engineers, sets technical direction, and drives scalable AI systems with 10+ years experience including 3+ in AI/ML and leadership.

About the job

Responsibilities

  • Lead technical implementation: Spend at least 50% of time hands-on with Python code, building core platform capabilities, optimizing LLM performance, and solving complex technical challenges.
  • Set technical direction: Define technical standards, review critical code, and ensure architectural decisions align with product vision.
  • Drive AI architecture: Design and implement agent framework, orchestration systems, and LLM integration patterns; make decisions about model selection, prompt strategies, and system architecture.
  • Mentor & elevate: Mentor senior engineers, conduct technical reviews, and help team level up AI and systems expertise.

Requirements

  • 10+ years software engineering experience, including 3+ years applying AI/ML in practice, and 3+ years in technical leadership.
  • GenAI expertise: LLMs, context management, prompting strategies, tool use, prompt caching, multi-modality, structured outputs, model differences, sampling parameters (top-p, temperature, min-p).
  • Technical visionary: Anticipate AI field direction, scalable architectures, track key changes.
  • Hands-on builder: Write production code daily, lead by example.
  • Proven technical leadership without formal authority.
  • Strong communication: Explain complex AI concepts, document decisions.

Skills

Python, LLMs, Prompt Engineering, Tool Use, Context Management, Structured Outputs, Orchestration Systems, AI/ML, Anthropic, Retrieval Techniques

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