AI Agent Algorithm Engineer Graduate (Global E-Commerce, Conversational AI) - 2027 Start

ByteDance; Singapore; On-site; SGD 45,000 - 55,000; Full time

Job summary

ByteDance seeks a Graduate AI Agent Algorithm Engineer to join its global e-commerce conversational AI team. You will own end-to-end components and ship production-ready systems across 30+ languages, focusing on agent runtimes, memory management, and tool integration.

You will post-train and fine-tune LLMs, build data flywheels from conversations, and contribute to evaluations and guardrails in a fast-paced, globally distributed environment.

Qualifications

• Bachelor's in CS/AI or quantitative field; strong ML/DL fundamentals.
• Proficiency in Python and at least one of C++, Go, Rust, Java.
• Hands-on experience with LLMs or agent systems through coursework, internship, or projects.

Responsibilities

• Build and evolve the agent runtime powering customer-service agents; orchestrate skills, tools, and context.
• Engineer context and memory for long multi-turn agents; memory, summarization, and retrieval workflows.
• Post-train and fine-tune LLMs and build data flywheels turning conversations into signals.
• Design and integrate tools, Skills, and MCP connectors; enable tool search in large inventories.

Skills

Python

C++

ML fundamentals

NLP

Education

Bachelor's degree in CS / AI

Master's degree in CS / AI

Tools

vLLM

TensorRT-LLM

MoE

Job description

AI Agent Algorithm Engineer Graduate (Global E-Commerce, Conversational AI) - 2027 Start

Employment Type:

Regular

Job Code:

A33057A

Responsibilities

About the TeamWe build the next-generation unified Agent system for TikTok's global e-commerce customer service — running in 30+ languages across one of the largest e-commerce surfaces on the internet. Our north star is a self-evolving Agent, where post-training, harness, memory / context engineering, tools, and evaluation form one closed loop, and every served conversation becomes the next iteration's training / eval / retrieval / skill-induction signal. We build the agent runtime itself — Codex / Claude-Code-class — not prompts on top of a vendor API. As a new grad, you'll own a real end-to-end piece from day one and ship it to production.We are looking for talented individuals to join our team. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth.

Job Responsibilities

• Build and evolve the agent runtime (harness / agent loop) powering our customer-service agents — orchestrate skills, tools, and context; implement loop control & intervention, progressive disclosure, and behavior-level guardrails.
• Engineer context & memory for long multi-turn agents — agentic memory (structured note-taking), context compaction / summarization, context editing / observation masking, and just-in-time (retrieve-then-load) retrieval.
• Post-train and fine-tune LLMs (SFT / DPO / RL) and build the data flywheel that turns served conversations into training / eval / retrieval signals.
• Design and integrate tools, Skills, and MCP connectors (tools-as-APIs), plus skill / tool search for large tool inventories.
• Build evaluation — LLM-as-judge with human-agreement calibration; regression / safety / cost / latency-aware harnesses; close the offlineonline gap.
• Build the self-evolving loop — replay + user-simulator + Auto-RCA / Auto-GSB / Auto-Policy — so the system continuously improves itself.
• Own one high-leverage end-to-end surface and ship it to production across 30+ languages, measured on real business metrics (CSAT, resolution / containment rate).

Qualifications

Successful candidates must be able to commit to an onboarding date by the end of the year. Please state your availability and graduation date clearly in your resume.

• Minimum Qualifications- Individuals who are completing or have recently completed a Bachelor's degree in CS / AI / Math or a quantitative field.
• Strong Python plus one of C++ / Go / Rust / Java
• Solid ML / DL / NLP fundamentals, with genuine hands-on experience with LLMs or agents (coursework, research, internship, competition, open-source, or a serious side project)
• Able to read a paper or an engineering blog and turn it into working code
• Preferred Qualifications- Individuals who are completing or have recently completed Master's degree in CS / AI / Math or a quantitative field.
• Have built the runtime, not just called an API — even at research / hobby / competition scale: your own agent loop / harness, a memory / context-management system, a RAG or tool-use agent, or a fine-tuned / post-trained model
• Hands-on experience in any one of: post-training (SFT / DPO / RLHF / RLAIF / RLVR, reward modeling); agent systems (harness, context engineering, MCP / Skills, sub-agents, tool search); evaluation (LLM-as-judge, τ-bench / SWE-bench / GAIA / BFCL); inference & serving (vLLM / TensorRT-LLM, MoE, KV / prompt caching); or multilingual NLP — depth in one is enough, breadth welcome

Job Information

About Us

Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

Why Join ByteDance

Inspiring creativity is at the core of ByteDance's mission. Our innovative products are built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and enrich life - a mission we work towards every day.

As ByteDancers, we strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our Company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

ByteDance is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At ByteDance, our mission is to inspire creativity and enrich life. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.