Senior Software Engineer, Personalization Services Job ID 2026-1062

Description

Senior Software Engineer, Personalization Services
Role Summary:  The Senior Software Engineer, Personalization Services is responsible for building and operating the backend APIs and services that deliver AI-driven personalization to Internet Brands’ products. This role focuses on transforming ML outputs—retrieval results, rankings, scores, and signals—into reliable, low-latency services that power personalized user experiences in production.

You will work closely with machine learning engineers, product managers, and platform architects to support rapid experimentation while maintaining high standards for performance, reliability, and scalability across multiple brands.

Key Responsibilities:
Personalization Services & APIs

• Design, develop, and maintain backend APIs and orchestration services that deliver personalized recommendations and content.
• Build service layers that integrate retrieval, ranking, and ML model outputs into user-facing product experiences.
• Implement request orchestration, fallback logic, and business rules to ensure consistent personalization behavior.
• Apply GenAI to enhance personalization, through the use of AI Agents and Agent Memory.

Performance, Reliability & Scale

• Optimize personalization services for low latency, high throughput, and reliability.
• Implement caching, timeout handling, and graceful degradation strategies.
• Monitor service health, performance metrics, and error rates in production.
• Ensure systems scale across high-traffic products and multiple brands.

Experimentation & Iteration

• Partner with Product Management and Machine Learning teams to support rapid experimentation and A/B testing.
• Enable feature flags, model versioning, and configuration-driven experimentation.
• Support fast iteration cycles while maintaining production stability.

Collaboration & Platform Alignment

• Collaborate with Machine Learning Engineers to integrate models into serving environments.
• Work with the Principal Architect to align service design with platform architecture standards.
• Partner with Data Engineering to ensure upstream data and features meet serving requirements.
• Translate product requirements into robust technical implementations.

Experience & Qualifications:

Required:

• Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
• 5+ years of experience building backend services in production environments.
• Strong experience with:
  • API design and service-oriented architectures
  • Backend development in one or more modern languages (e.g., Java, Kotlin, Go, Python, or similar)
  • Distributed systems and cloud-based infrastructure
• Proven ability to design systems with performance, reliability, and scalability in mind.

Preferred:

• Experience building personalization, recommendation, or search services.
• Familiarity with ML model serving and inference pipelines.
• Experience supporting A/B testing and experimentation platforms.
• Knowledge of caching strategies, asynchronous processing, and message-driven systems.
• Experience working in multi-tenant or multi-brand environments.

Why Join Internet Brands

• Build the production services that bring AI-driven personalization to life.
• Work on high-impact systems serving millions of users.
• Be part of a newly formed Personalization team with strong cross-functional collaboration.
• Influence both technical architecture and product outcomes.

About Internet Brands: 
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 depend on your skills, qualifications, and experience. 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).

 
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