Senior Full Stack AI Engineer Job ID 2025-9880

Internet BrandsEl Segundo, CA
12d

About The Position

We are looking for a skilled Senior Software Engineer with a strong background in Generative AI, Agentic AI, and applied software engineering. You will play a key role in building agentic AI systems, designing prompt-driven workflows, integrating tools with LLMs, and mentoring the team on the latest advancements in AI technologies.

Requirements

  • Technical Proficiency Strong programming fundamentals (OOP, security, performance).
  • Experience building scalable and modular systems using modern frameworks and tools.
  • Proficiency with LLMs, OpenAI/Anthropic APIs, LangChain or similar.
  • GenAI & Agentic AI 6+ years of experience working with GenAI and LLMs.
  • 6+ years of experience in prompt engineering and AI agent architectures.
  • Familiarity with agent frameworks like CrewAI, Autogen, Cursor, or Windsurf.
  • Strong understanding of the Cursor Rule (intent → context → action), a principle for structuring agent behavior, and real-world experience applying it in workflows.
  • Solid understanding of how to construct and pass dynamic context to LLMs, including techniques like session memory and prompt templating.

Nice To Haves

  • Experience adapting or customizing LLMs is a plus.
  • Familiarity with front-end frameworks or relational databases is a plus.
  • Testing & DevOps Experience with Git, CI/CD workflows, and test automation.
  • Familiarity with DevOps tools, monitoring, and logging in production environments.
  • Soft Skills Excellent communication and collaboration skills.
  • Self-driven and eager to mentor and share knowledge.

Responsibilities

  • Design & Development Architect and build AI-powered tools using LLMs (e.g., OpenAI, Claude, Mistral, etc.).
  • Integrate and customize AI agents using frameworks like LangChain, CrewAI, or custom solutions.
  • Collaborate with product and research teams to translate requirements into prompt workflows and agent behaviors.
  • Design and implement scalable systems and infrastructure to support AI agents and workflows, using suitable tools and technologies.
  • Prompt Engineering & Agentic Workflows Design advanced, modular prompt chains that incorporate memory, dynamic context injection, and multi-step reasoning across agent workflows.
  • Experiment with and optimize agentic architectures for real-world tasks (retrieval, generation, summarization, etc.).
  • Front-End Integration Collaborate with UI/UX or front-end teams to integrate AI-powered features into user-facing applications as needed.
  • Adaptability & Learning Mindset Willingness and ability to quickly learn and adapt to new technologies, frameworks, and tools as needed.
  • Open to working across the stack to support the development of AI-powered solutions.
  • Comfortable stepping beyond core skill sets to contribute wherever needed in the AI application lifecycle.
  • Testing & DevOps Write unit and integration tests to ensure reliability.
  • Participate in code reviews, CI/CD pipelines, and deploy models/services using best practices.
  • Mentorship & Collaboration Upskill peers in GenAI, prompt engineering, and best practices.
  • Contribute to knowledge-sharing and architectural reviews across teams.
  • Stay updated with evolving AI ecosystems, tools, and research.

Benefits

  • health insurance options such as medical, dental, and vision coverage
  • flexible spending accounts (FSA) for medical and dependent care
  • short-term and long-term disability insurance
  • life and AD&D insurance
  • 401(k) retirement savings plan with a company match
  • paid time off (PTO)
  • paid holidays
  • commuter benefits
  • access to our Employee Assistance Program (EAP) and well-being coaching services
  • voluntary benefits such as home, auto and pet insurance, and discounted legal and financial services
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