Research Engineer Graduate (Agent Systems & AI Coding Environment – Seed Infra) – 2026 Start (PhD)

ByteDance
Seattle
Full timeFunction: Research & Scientific (R&D)Education: phdSkills: ["Problem-solving","Collaboration","System design","Benchmarking","Data curation"]

Join the Seed Infrastructures team to build agent harnesses and execution environments for AI coding and knowledge tasks, including sandboxing and system interaction. Develop scalable orchestration frameworks for multi-step agent workflows and design evaluation/benchmarking for long-horizon performance. Improve agent outcomes through prompting, data curation, and post-training in partnership with model and RL teams, helping productionize agent systems for AI foundation models.

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FursaFursa
ByteDance
ByteDance
12 hours ago

Research Engineer Graduate (Agent Systems & AI Coding Environment – Seed Infra) – 2026 Start (PhD)

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Last checked: 12 hours agoStatus: Live
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Job Summary

Join the Seed Infrastructures team to build agent harnesses and execution environments for AI coding and knowledge tasks, including sandboxing and system interaction. Develop scalable orchestration frameworks for multi-step agent workflows and design evaluation/benchmarking for long-horizon performance. Improve agent outcomes through prompting, data curation, and post-training in partnership with model and RL teams, helping productionize agent systems for AI foundation models.
Location: Seattle
Employment Type: Full time
Job Function: Research & Scientific (R&D)
Seniority: Graduate level

Key Responsibilities

  • •Build agent harness and execution environments for AI coding and knowledge tasks, including code execution, tool integration, sandboxing, and system interaction.
  • •Develop scalable orchestration frameworks for multi-step agent workflows (planning, tool use, memory, coordination).
  • •Design evaluation and benchmarking systems to measure agent performance on complex, long-horizon tasks.
  • •Improve agent performance through prompting, data curation, and post-training in collaboration with model and RL teams.
  • •Partner with research and product teams to productionize agent systems.

Key Requirements

  • •Completing or recently completed a PhD in Computer Science, Electrical Engineering, Electrical and Computer Engineering, Physics, Mathematics, or a related discipline.
  • •Strong programming skills (Python or similar) and system-building experience.
  • •Experience with LLM-based systems, pipelines, or tool-integrated workflows.
  • •Understanding of system design and building scalable infrastructure.
  • •Experience building agent harness/runtime systems or AI coding environments.
Experience:AILLMReinforcement learningDistributed systemsAI coding
Education:PhD / Doctorate
Skills:Problem-solvingCollaborationSystem designBenchmarkingData curation
Tech Stack:PythonLLMReinforcement learningDockerKubernetes

Company Brief

ByteDance
Develops consumer internet and content platforms, including TikTok and other apps for short-form video, news, and entertainment. It also builds advertising, commerce, and creator tools that connect audiences, brands, and publishers across global markets.
Industry: Digital Media
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Established Company
Headquarters: Beijing, China
Founded: 2012
WebsiteLinkedIn