TikTok · 1 day ago
Software Engineer Intern (Data Ecosystem) - 2026 Summer (BS/MS)
United States
Internship
Remote
Intern
Start in 2026 SpringTikTok is the leading destination for short-form mobile video, and they are seeking a Software Engineer Intern for their Data Ecosystem Team. The role involves designing and implementing data architecture for large-scale recommendation systems, ensuring system reliability and performance for TikTok's vast user base.
Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo
No H1B
Responsibilities
Design and implement real-time and offline data architecture for large-scale recommendation systems
Build scalable and high-performance streaming Lakehouse systems that power feature pipelines, model training, and real-time inference
Collaborate with ML platform teams to support PyTorch-based model training workflows and design efficient data formats and access patterns for large-scale samples and features
Own core components of our distributed storage and processing stack, from file format to stream compaction to metadata management
Qualification
Required
Currently pursuing an Undergraduate/Master in Computer Science or a related technical discipline
Able to commit to working for 12 weeks during Summer 2026
Must obtain work authorization in country of employment at the time of hire, and maintain ongoing work authorization during employment
Familiarity with modern Lakehouse technologies such as Apache Paimon, Iceberg, Delta Lake, or Hudi, especially around incremental ingestion, schema evolution, and snapshot isolation
Preferred
Experience in designing and optimizing Flink + Paimon architectures for unified batch/stream processing
Familiarity with feature storage and training data pipelines, and their integration with PyTorch, especially for large-scale model training
Knowledge of columnar file formats (Parquet, ORC, Lance) and how they are used in feature engineering or ML data loading
Proficiency in Java/Scala/C++, and strong debugging/performance tuning ability
Previous experience in Lakehouse metadata management, compaction scheduling, or data versioning is a plus
Solid understanding of Apache Flink internals, with hands-on experience in state management, connectors, or UDFs
Benefits
Interns have day one access to health insurance, life insurance, wellbeing benefits and more.
Interns also receive 10 paid holidays per year and paid sick time (56 hours if hired in first half of year, 40 if hired in second half of year).
Interns who are not working 100% remote may also be eligible for housing allowance.
Company
TikTok
TikTok is a short-form video entertainment app and social network platform. It is a sub-organization of ByteDance.
Founded in 2003
10001+ employees
Funding
Current Stage
Late StageLeadership Team
N Ali Mohamed
CEO
Blake Chandlee
VP Global Business Solutions
Recent News
2026-01-09
2026-01-09
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