Joonwoo Jang

Associate Consultant

Tokyo, Japan2 yrs 1 mo experience

AI EnabledAI ML Practitioner

Key Highlights

Quadlingual with advanced language certifications
5x Certified in Microsoft Azure and GCP
Expertise in developing AI-powered applications

Stackforce AI infers this person is a SaaS-focused software engineer with expertise in AI and cloud technologies.

Contact

Skills

Core Skills

Microsoft AzureArtificial Intelligence (ai)Large Language Models (llm)Vue.jsMysqlNode.jsReact.jsLeadership

Other Skills

LangGraphFastAPIGoogle Cloud Platform (GCP)Python (Programming Language)CodeIgniterAmazon Web Services (AWS)LinuxJavaScriptAWS LambdaPrompt EngineeringTeaching English as a Second LanguageEducationMicrosoft ExcelCommunicationPublic Speaking

About

Korean IT Consultant, graduated in China, working in Tokyo, Japan. I speak native Korean, English, Chinese, Japanese, and a little bit of cloud. - Quadlingual, iBT TOEFL 117/120, HSK Level 6, JLPT N1 Certified - Microsoft Azure, Google Cloud Platform (GCP) 5x Certified

Experience

Accenture

Business Architecture Senior Analyst

Dec 2025 – Present · 3 mos · Tokyo, Japan · On-site

Accenture Microsoft Business Group, Azure AI & Data Team
【2025.12~】
Developing LLM-powered Chatbot systems for Japanese Universities.
Stacks: Microsoft Azure, Google Cloud Platform (GCP), Vue.js, FastAPI, LangGraph, PostgreSQL

Microsoft AzureArtificial Intelligence (AI)Large Language Models (LLM)LangGraphVue.jsFastAPI

Nec corporation

Software Engineer

May 2025 – Nov 2025 · 6 mos · Tokyo, Japan · Hybrid

Worked on PoC development for LLM‑based Digital Human project. Seconded from HCLTech.
Designed, maintained and improved Azure architecture for backend running on Azure VM and Azure OpenAI services for improved scalability and maintainability
Built a fully automated CI/CD pipeline using Azure DevOps, reducing deployment time from 5+ minutes to under 1 minute
Built a Next.js (React) based web chat application from scratch, for internal backend chat server testing
Built a Next.js (React) based web application from scratch, that connects to Rust Tauri application and shows live-time information from user's input while the user is chatting with the digital human
Developed Python FastAPI-based backend tailored to a major Japanese companies, utilizing LLM function calling capability and RAG search
Performed multilingual prompt engineering (Japanese, English, Korean and Chinese) using GPT models to fine-tune interaction quality

Microsoft AzureLarge Language Models (LLM)Artificial Intelligence (AI)React.jsPython (Programming Language)

Hcltech

Software Engineer

Apr 2025 – Nov 2025 · 7 mos · Tokyo, Japan · Hybrid

Seconded to NEC Corporation

Xronos inc. (クロノス株式会社)

Software Engineer

Sep 2024 – Apr 2025 · 7 mos · Tokyo, Japan · On-site

Worked as full-stack developer for X'sion, a cloud-based HR platform trusted by over 16,000 companies across Japan for HR and attendance management.
Refactored Vue.js legacy code for the Daily Report (日報) module, removing 200+ lines of redundancy via component modularization
Developed responsive data visualizations with Chart.js and optimized MySQL stored procedures, reducing query times from 30+ seconds to under 5 seconds
Stacks: Vue.js, MySQL (Stored Procedures), CodeIgniter

Vue.jsMySQLCodeIgniterAmazon Web Services (AWS)

Iqair: first in air quality

Node.js Full Stack Software Development Intern

Apr 2023 – Jul 2023 · 3 mos · Beijing, China · On-site

Worked as a Full-Stack Node.js Software Development Intern in IQAir China Beijing office for 3 months.
Responsibilities include:
Node.js Web Scraper Development & Maintenance
React.js Kibana Dashboard Front-End component Development
Stacks: Node.js, React.js, AWS Lambda

React.jsLinuxAmazon Web Services (AWS)Node.jsJavaScript

Us army

KATUSA Soldier (Mandatory Military Service)

Nov 2019 – Jun 2021 · 1 yr 7 mos · 2501st Digital Liaison Detachment, Camp Yongin, South Korea

Served as part of the US Army as a KATUSA (Korean Augmentation to the United States Army) Soldier at Camp Yongin/CGCC (Combined Ground Component Forces Command), working with US Soldiers in Korea with MOS 42A & Linguist Speciality. (한국군 주특기 311,101, 카투사 어학행정병)
Discharged from active service as a Sergeant (E-5)
Main Duties Include:
Offering translation between ROK Army and US Army officers&personnels during peacetime events and ROK/US Combined Exercises (CCPT)
HR Administrative duties
Achieved:
US Army Combat Lifesaver Certification
Army Commendation Medal (ARCOM)

Leadership