Research Engineer – Agent Systems & AI Coding Environment (Seed Infra Platform)

ByteDance
Seattle
Workplace: OnsiteFull timeFunction: Research & Scientific (R&D)Education: bachelorsSkills: ["Collaboration"]

Build and scale agent harnesses and execution environments for AI coding and knowledge tasks, including tool integration, sandboxing, and system interaction. Develop orchestration frameworks for multi-step agent workflows and design evaluation/benchmarking to measure long-horizon performance. Improve agent outcomes through prompting, data curation, and post-training collaboration, and help productionize agent systems with research and product teams.

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FursaFursa
ByteDance
ByteDance
1 month ago

Research Engineer – Agent Systems & AI Coding Environment (Seed Infra Platform)

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Source: Company careers pageValidated by: Fursa AI
Last checked: 31 days agoStatus: Live
Reposted: similar role first listed 1 month ago

Job Summary

Build and scale agent harnesses and execution environments for AI coding and knowledge tasks, including tool integration, sandboxing, and system interaction. Develop orchestration frameworks for multi-step agent workflows and design evaluation/benchmarking to measure long-horizon performance. Improve agent outcomes through prompting, data curation, and post-training collaboration, and help productionize agent systems with research and product teams.
Location: Seattle
Workplace: Onsite
Employment Type: Full time
Job Function: Research & Scientific (R&D)

Key Responsibilities

  • •Build agent harness and execution environments for AI coding and knowledge tasks (code execution, tool integration, sandboxing, 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 via 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

  • •Bachelor’s degree (or above) in Computer Science or a related field.
  • •Strong programming skills (Python or similar) with system-building experience.
  • •Experience with LLM-based systems, pipelines, or tool-integrated workflows.
  • •Understand system design and scalable infrastructure building.
  • •Experience building agent harness/runtime systems or AI coding environments, including Docker/Kubernetes and distributed/containerized/sandboxed code execution.
Experience:LLMsAI foundation modelsReinforcement learningDistributed systems
Education:Bachelor's in Computer Science
Skills:Collaboration
Tech Stack:PythonLLMsReinforcement 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