Available for opportunities

SOFTWARE DEVELOPER · AI & MULTI-AGENT SYSTEMS

JIARUN
HAN

01 / ABOUT

Systems that act,
verify & improve.

I build AI agents and Python applications that execute tools, check results, and reuse experience — alongside knowledge-graph decision support and evidence-grounded troubleshooting systems.

2+Years experience
4Recent roles

CURRENTLY

Research Assistant Intern at the University of Helsinki — building VeriEvo for verified engineering optimization.

BASED IN

Solna, Stockholm

OPEN TO

Software development and AI engineering roles

02 / EXPERIENCE

06/2026 — PRESENT

Research internship

University of Helsinki

Research Assistant Intern

Built all modules of VeriEvo, an AI agent framework that generates and improves engineering solutions through code execution, simulation, constraint checks, and reusable experience. Integrated ShipD hull optimization and reduced total resistance by 10.27% on average across 50 tasks.

AI AgentsPythonCode ExecutionSimulationOptimization

01/2026 — 06/2026

Thesis internship

Ericsson

Master Thesis Intern — AI & Multi-Agent Systems

Built a general-purpose multi-agent framework that turns requirements and domain knowledge into evidence-backed recommendations. Used AG2 and Neo4j to coordinate review and refinement while preserving proposals, disagreements, revisions, and final decisions for inspection.

AG2 / AutoGenMulti-AgentKnowledge GraphNeo4jPython

05/2025 — 08/2025

Internship

University of Chinese Academy of Sciences

AI Engineer Intern

Built an AI troubleshooting prototype with a FastAPI backend, Gradio interface, user sessions, and conversation history. Developed LangGraph workflows and a RAG pipeline that combined logs, technical documents, and KPIs to investigate faults with relevant evidence.

LangGraphRAGFastAPIGradiopgvector

10/2024 — 05/2025

Part-time

Scale AI

AI Evaluator & Senior Reviewer

Ranked and refined LLM outputs for code generation, reasoning, and instruction following to support RLHF fine-tuning. Audited 100+ tasks weekly with over 95% quality compliance while mentoring junior annotators.

LLM EvaluationRLHFCode GenerationReasoning
03 / EDUCATION

09/2024 — 10/2026

KTH Royal Institute of Technology & Aalto University

M.Sc. ICT Innovation · Dual degree · Stockholm & Helsinki

09/2018 — 06/2024

Changchun University of Science and Technology

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

04 / SELECTED WORK
05 / CAPABILITIES
CoreProficientFamiliar

DEVELOPMENT

  • FastAPI
  • React
  • Gradio
  • PyTorch
  • Hugging Face
  • Docker
  • Tailwind CSS
  • Node.js

TOOLS / PLATFORMS

  • Git
  • Linux
  • Google Cloud
  • Codex
  • Claude Code
  • Copilot

LANGUAGES / DATA

  • Python
  • TypeScript
  • JavaScript
  • SQL
  • Cypher
  • C++
  • Neo4j
  • pgvector

06 / CONTACT

Let's build something
together.

Open to software development and AI engineering roles focused on agents, backend systems, and applied machine learning.

Get in Touch