The Role
Build and ship full-stack AI applications, including frontend experiences, backend services, retrieval systems, MCP tool layers, workflows, and intelligent agents. Own projects from concept through production while ensuring reliability and scalability. Develop AI evaluation and feedback systems, debug complex issues across the stack, and improve system performance. The role requires production experience with frontend and backend development, databases, asynchronous systems, and applied AI or machine learning.
Summary Generated by Built In
Senior Fullstack Engineer: Agentic Infrastructure Team
Internet Brands is looking for a Senior Fullstack Engineer to join our Agentic AI team. You'll help build our AI capabilities from the ground up, designing and shipping tools, services, and intelligent agents that power AI experiences across our entire product ecosystem.
What You'll Do
- Build and ship full-stack AI applications: Create frontend experiences and backend systems that power real AI capabilities, iterating based on performance and user feedback
- Own the full lifecycle: Take projects from idea through production deployment, ensuring quality, reliability, and scalability
- Build foundational infrastructure: Develop search/retrieval services, tool execution layers (MCP servers), workflows, and intelligent agents
- Establish measurement systems: Create feedback loops and performance tracking to continuously improve AI system behavior
- Solve complex problems: Debug issues across the stack, identify root causes, and implement robust solutions
Foundation (Required):
- 5+ years shipping production code (frontend and backend)
- Strong programming fundamentals: We’ll primarily use JavaScript, Python and PHP, but value problem-solving skills over specific language expertise
- Backend development experience: Building workflows, APIs, state management, and async systems
- Database knowledge: Working with both SQL and NoSQL databases
- Frontend skills: Building responsive interfaces with modern frameworks (React, Vue, Angular, Svelte, etc.)
- Experience applying AI/ML in production: You've worked with LLMs or ML models in real applications, not just tutorials
Working Style:
- Ownership mindset: You identify problems, take initiative, and see things through
- Pragmatic and adaptable: You choose the right tool for the job and aren't afraid to learn new technologies
- Systematic problem-solver: You can debug complex systems and think through tradeoffs
Good to Have:
- Knowledge of AI evaluation, error analysis, and building feedback loops
- Experience with agentic frameworks (LangGraph, Google ADK) or Model Context Protocol (MCP)
- Background in information retrieval or search systems
Even if you don't check every box, we encourage you to apply. We value problem-solving ability, learning agility, and ownership over perfect resume matches. If you're excited about building production AI systems and have strong fullstack fundamentals, we want to hear from you.
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 $100ks
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
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
Skills Required
- 5+ years of experience shipping production frontend and backend code
- Strong programming fundamentals; experience with JavaScript, Python, and PHP is valued
- Backend development experience building workflows, APIs, state management, and asynchronous systems
- Experience working with SQL and NoSQL databases
- Frontend development experience with modern frameworks such as React, Vue, Angular, or Svelte
- Production experience applying AI or machine learning models, including large language models
- Knowledge of AI evaluation, error analysis, and feedback loops
- Experience with agentic frameworks such as LangGraph or Google ADK, or Model Context Protocol
- Background in information retrieval or search systems
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The Company
What We Do
Our Company: WebMD is a leading provider of health information services to consumers, physicians, healthcare professionals, employers and health plans. Our Business: WebMD is the leading provider of health information and services to consumers and healthcare professionals. The online healthcare information, decision-support applications and communications services that we provide: help consumers take an active role in managing their health by providing objective healthcare information and lifestyle information. make it easier for physicians and healthcare professionals to access clinical reference sources, stay abreast of the latest clinical information, learn about new treatment options, earn continuing medical education credits and communicate with peers. enable employers and health plans to provide their employees and plan members with access to personalized heath and benefit information and decision support technology that helps them make informed benefit, provider and treatment choices.
