Available for opportunities

AI ENGINEER / STOCKHOLM

JIARUN
HAN

01 / ABOUT

Systems that reason,
remember & explain.

I build systems where agents collaborate, reason, and remember — with persistent memory, traceable decision paths, and explainable outputs. Every claim grounded in source, every action auditable.

2+Years experience
4Internships

CURRENTLY

Thesis intern at Ericsson — multi-agent reasoning with ontology-driven knowledge graphs.

BASED IN

Stockholm, Sweden

OPEN TO

AI / multi-agent engineering roles

02 / EXPERIENCE

01/2026 — 06/2026

Thesis intern

Ericsson

Master Thesis Intern — AI & Multi-Agent Systems

Designing an ontology-driven knowledge graph framework with multi-agent reasoning for reliable enterprise decision-making. Specialized agent teams collaborate over Neo4j while keeping every action explainable.

Multi-AgentKnowledge GraphNeo4jOntologyLangGraph

05/2025 — 08/2025

Internship

University of Chinese Academy of Sciences

AI Engineer Intern

Prototyped a LangGraph-based multi-agent framework for dynamic dialogue routing and RCA-style troubleshooting, integrating logs, documents and KPIs with RAG-based explainability.

LangGraphRAGFastAPIGradiopgvector

10/2024 — 05/2025

Part-time

Scale AI

AI Evaluator & Senior Reviewer

Led LLM evaluation across model ranking, instruction tuning and prompt refinement. Audited 100+ tasks weekly with over 95% quality compliance while mentoring junior annotators.

LLM EvaluationPrompt EngineeringInstruction TuningRAG

03/2022 — 09/2022

Internship

Alibaba Digital Media & Entertainment Group

Frontend Developer Intern

Built responsive, high-performance React features for Youku, one of China’s largest video streaming platforms, collaborating across product and backend teams.

React.jsWeb DevelopmentJavaScriptAgile
03 / EDUCATION

09/2024 — 06/2026

KTH Royal Institute of Technology

M.Sc. ICT Innovation · Stockholm, Sweden

09/2024 — 06/2026

Aalto University

M.Sc. ICT Innovation · Helsinki, Finland

09/2018 — 06/2024

Changchun University of Science and Technology

B.Eng. Robotics & B.Sc. Computer Science · China

04 / SELECTED WORK
05 / CAPABILITIES
CoreProficientFamiliar

FRAMEWORKS

  • PyTorch
  • HuggingFace
  • FastAPI
  • Gradio
  • LangChain
  • Docker
  • React
  • Tailwind CSS
  • Node.js

DATA / INFRA

  • pgvector
  • Embedding & Retrieval
  • AWS Bedrock
  • Google Cloud
  • SQL

LANGUAGES / DOMAIN

  • Python
  • JavaScript
  • TypeScript
  • Knowledge Graphs
  • Neo4j / Cypher

06 / CONTACT

Let's build something
together.

Open to full-time roles and internship opportunities in AI, multi-agent systems, and LLM engineering.

Get in Touch