Software Engineer - Recommendation Infrastructure, Agentic Engineering

Software Engineer – Recommendation Infrastructure, Agentic Engineering

Location:

San Jose

Employment Type:

Regular

Job Code: A59365

About The Team:
The Recommendation System Infrastructure team is responsible for building and evolving large‑scale online serving and data infrastructure that powers Tik Tok’s recommendation products globally. Our mission is to deliver highly efficient, reliable, observable, and scalable infrastructure for recommendation systems. The team works closely with recommendation algorithm teams to accelerate strategy iteration, improve compute efficiency, optimize serving cost, and enable the next generation of AI‑native and agentic engineering workflows.

• Improve recommendation system iteration efficiency by enhancing observability, debuggability, automation, scheduling, and execution reliability, with clear impact on cost, iteration speed, reliability, and serving performance.
• Design and build AI‑native agentic engineering systems that automate end‑to‑end engineering workflows, including system observation, issue diagnosis, root‑cause analysis, optimization planning, execution, validation, rollout, and post‑change verification.
• Build 24/7 closed‑loop automation capabilities to replace repetitive, low‑efficiency manual engineering work and reduce human overhead in system iteration, performance optimization, and reliability improvement.
• Partner closely with recommendation algorithm teams to support strategy scale‑up, improve compute efficiency, accelerate recommendation system iteration, and co‑design efficient agentic system infrastructure.
• Optimize high‑performance computing frameworks, storage systems, distributed infrastructure components, and runtime systems for recommendation workloads.

• Minimum:
  Bachelor's degree or above in Computer Science, Software Engineering, or a related technical field; experience in building scalable backend systems, distributed systems, infrastructure systems, or high‑performance online services; strong programming skills in at least one systems programming language (C++, C, Go, Java); solid understanding of data structures, algorithms, operating systems, networking, and distributed system fundamentals; experience with performance analysis, system debugging, reliability improvement, or large‑scale service optimization;
  
  strong ownership, problem‑solving ability, and communication skills; ability to work effectively with cross‑functional teams, including infrastructure teams, recommendation algorithm teams, and product/business‑facing engineering teams.
• Preferred:
  Experience with infrastructure for recommendation systems, search engines, advertising systems, machine learning systems, or large‑scale online serving systems; optimizing high‑throughput, low‑latency C++ services in production environments; familiarity with profiling, benchmarking, performance tuning, capacity planning, resource efficiency improvement, and cost optimization; experience with large‑scale data processing systems such as Flink, Spark, Kafka, or similar frameworks; experience building end‑to‑end automation systems based on AI agents, LLMs, workflow orchestration, or closed‑loop engineering automation;
  
  designing agentic workflows for system diagnosis, performance optimization, reliability improvement, change validation, or automatic execution; experience with real‑time data pipelines, online training, feature engineering, candidate generation, or recommendation system iteration workflows.

The base salary range for this position in the selected city is $156,000 - $387,600 annually. Compensation may vary outside of this range depending on a number of factors, including a candidate’s qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Benefits may vary depending on the nature of employment and the country work location. Employees have day‑one access to medical, dental, and vision insurance, a 401(k) savings plan…