Senior Fullstack Engineer Agentic Infrastructure
About the Role: 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.
Roles and Responsibilities:
Design & Development
Architect and build AI-powered tools using LLMs (e.g., OpenAI, Claude, Mistral, etc.) using best practices in prompt engineering and context engineering.
Integrate and customize AI agents using frameworks like LangChain, Google ADK, Claude Agent SDK or custom solutions.
Utilize observability and evaluation tools, such as Langfuse.
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, multi-agent workflows that incorporate memory, dynamic context injection, and multi-step reasoning.
Experiment with and optimize agentic architectures for real-world tasks (retrieval, generation, summarization, etc.).
Front-End Integration
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.
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.
Full Stack Development
6+ years of experience in full stack development.
Strong experience with:
API design and service-oriented architectures
Backend development in one or more modern languages (e.g., Python, Java, PHP, TypeScript or similar)
Distributed systems and cloud-based infrastructure
SQL and relational databases
Proven ability to design systems with performance, reliability, and scalability in mind.
GenAI & Agentic AI
1+ years of experience working with GenAI and LLMs.
1+ years of experience in prompt engineering and AI agent architectures.
Familiarity with agent frameworks like LangChain, Google ADK, and Claude Agent SDK.
Experience with Agentic IDEs such as Cline, Cursor, and Replit.
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.
Experience adapting or customizing LLMs is a plus.
Additional Technical Exposure (Good to Have)
Testing & DevOps
Experience with Git, CI/CD workflows, and test automation.
Familiarity with DevOps tools, monitoring, and logging in production environments.
Soft Skills
At Internet Brands, we carefully consider a wide range of factors when determining compensation, including your background and experience. These considerations can cause your compensation to vary. We expect the compensation for this role to be in the low 100s. We encourage all interested candidates to apply.
In addition to our awesome culture, we offer a comprehensive benefits package designed to support the health and well-being of you and your family. Our benefits include 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, and life and AD&D insurance. We also provide a 401(k) retirement savings plan with a company match, paid time off (PTO), paid holidays, commuter benefits as well as access to our Employee Assistance Program (EAP) and well-being coaching services. In addition, employees can take advantage of voluntary benefits such as home, auto and pet insurance, and discounted legal and financial services. For more details, feel free to inquire during the interview process.
Internet Brands®, headquartered in El Segundo, Calif, is a fully integrated online media and software services company focused on four high-value vertical categories: Health, Automotive, Legal, and Home/Travel. The company's properties and platforms include the WebMD, Medscape, and Henry Schein ONE networks, which are the global leaders in their markets; Nolo, Avvo, and Martindale, which form the largest consumer information provider in the legal market; and CarsDirect, Fodor's Travel, and many others which are leaders in their key vertical markets. Internet Brands' award-winning consumer websites lead their categories and serve more than 250 million monthly visitors, while a full range of web presence offerings has established deep, long-term relationships with SMB and enterprise clients. The company's powerful, proprietary operating platform provides the flexibility and scalability to fuel the company's continued growth. Internet Brands is a portfolio company of KKR and Warburg Pincus.
Internet Brands is an equal opportunity employer, and we welcome applicants from all backgrounds. We comply with all applicable laws and regulations, including the City of Los Angeles Fair Chance Initiative for Hiring Ordinance (FCIHO).
Notice to California residents: you can find information about our privacy practices, on: https://www.internetbrands.com/work-with-us/cpra
