AI Engineer

Jun Wei Lim

AI Engineer | Software Engineer

AI engineer and software engineer with 8+ years shipping production systems, plus hands-on government-sector delivery and independent AI workflow projects.

  • Hands-on IC with lead scope
  • 350 hrs per month ops savings
  • 86-repo modernization
  • LLM and agent systems

Summary

AI engineer with production delivery depth

Strengths span platform modernization, security remediation, frontend migration, CI/CD improvement, and end-to-end delivery. Recent work includes hands-on government-sector application delivery with technical lead scope, consolidating dependencies across 86 repositories, moving validators and repos into a safer Nx monorepo, and building independent AI workflow projects for media generation and agent-driven research.

Keyword Coverage

  • JavaScript
  • TypeScript
  • Python
  • Java
  • FastAPI
  • Next.js
  • Vue 3
  • AWS
  • Nx
  • Security remediation
  • LLM workflows
  • Prompt orchestration
  • Agent systems
  • Nginx

Experience

Career History

Software Engineer
GovTech
December 2019 - Present | Singapore
  • Served as technical lead for the Black Panther team of 6 SWEs and 2 QEs while staying hands-on across government work-pass delivery, backlog shaping, and code quality.
  • Led SingPass self-issuance and cancellation from access logic through rollout and post-deployment fixes, supporting about 1,000 transactions and saving about 350 man-hours per month with zero issues since launch.
  • Resolved critical multi-browser session and login-sync defects across 31 forms, preventing recurrence for high-volume internal users.
  • Led security and modernization work across SHIPHATS and VAPT remediation, DR and failover support, and OnePass Vue 3 migration, cutting form build times by 70 percent from 93 seconds to 22 seconds.
  • Drove dependency standardization across 86 repositories, reducing unique versions by 52 percent and vulnerabilities by 55 percent, then migrated validators and repos into a single Nx monorepo.
  • Built wins-dev-tools cleanup and Jira automation, reducing essential repositories from 170 to 50, improving daily update speed by 60 percent, and helping recover critical production and data incidents affecting 1,000 institutions.
Software Engineer
ST Engineering
January 2018 - December 2019 | Singapore
  • Led a 5-month development initiative using AngularJS, NodeJS, and MongoDB with a focus on performance and maintainability.
  • Contributed to delivery of the TUAS system frontend and the resulting multi-million dollar contract win.
  • Streamlined the TUAS data model and saved 3 months through focused key requirements and knowledge transfer to offshore developers.
  • Resolved over 10 defects in PSA's legacy port operation system within 2 weeks to support a smooth UAT phase.
  • Improved product quality with automated tests and code analysis tools.

Projects

Selected Independent AI Projects

GenMaster
AI workflow and generation platform
Hobby project
  • FastAPI
  • Next.js
  • Comfy workflows
  • GPU orchestration
  • Built and maintained an independent multimodal AI project with FastAPI and Next.js across image, video, audio, and story workflows.
  • Added prompt enhancement, story planning, and agent preparation paths to make generation flows more controllable and reusable.
  • Handled Comfy execution, GPU orchestration, and media pipeline tooling for operator-facing product features.
Live genmaster.duckdns.org
QuantMaster
Agent-driven trading research platform
Hobby project
  • FastAPI
  • Next.js
  • Agent workflow
  • Backtesting
  • Built and maintained an independent automated trading and research platform with a Python FastAPI backend and Next.js frontend.
  • Integrated a multi-stage AI strategy-agent workflow spanning researcher, coder, validator, and critic roles, alongside replay and backtesting flows.
  • Connected broker workflows, automation controls, and research surfaces in one product system.
Live quantmaster.duckdns.org

Education And Certifications

Education

Bachelor of Computing
National University of Singapore
2017 | Singapore | 4.48
  • Computer Science.
  • Awarded distinction for degree and Computer Graphics specialization.

Certifications

Certified ScrumMaster
Scrum Alliance
2019
  • Completed to understand the importance of project management.

Skills And Contact

Core Stack

Frontend

  • JavaScript
  • TypeScript
  • React
  • Next.js
  • Vue 3
  • AngularJS
  • HTML/CSS

Backend And Platform

  • Python
  • Java
  • Node.js
  • FastAPI
  • AWS
  • Nginx
  • Nx

AI Systems

  • LLM workflows
  • Prompt orchestration
  • Agent systems
  • ComfyUI workflows
  • Workflow automation

Delivery And Ops

  • SQL
  • MongoDB
  • Docker
  • CI/CD
  • VAPT remediation
  • Jest
  • Playwright
  • Git
  • Jira automation

Contact

For AI engineer or full-stack platform roles, reach out through the channels below.

Machine-Readable Summary

Jun Wei Lim is a Singapore-based AI engineer and full-stack software engineer with 8+ years building production systems. His experience includes hands-on government-sector delivery with technical lead scope, security and dependency modernization across 86 repositories, and independent AI workflow projects across GenMaster and QuantMaster.

Experience

  • GovTech, Software Engineer, December 2019 to Present, Singapore. Hands-on engineer on government work-pass systems with technical lead scope for a team of 6 SWEs and 2 QEs; led SingPass self-issuance and cancellation work supporting about 1,000 transactions and saving about 350 man-hours per month; and resolved a critical multi-browser session defect across 31 forms.
  • GovTech, Platform modernization highlights, December 2019 to Present, Singapore. Led SHIPHATS and VAPT remediation, DR and failover support, and OnePass Vue 3 migration with 70 percent faster builds; drove dependency standardization across 86 repositories with 52 percent fewer versions and 55 percent fewer vulnerabilities; migrated validators and repos into a single Nx monorepo; improved daily update speed by 60 percent; and helped recover critical production and data incidents affecting 1,000 institutions.
  • ST Engineering, Software Engineer, January 2018 to December 2019, Singapore. Led a 5-month AngularJS, NodeJS, and MongoDB initiative, contributed to TUAS system frontend delivery, streamlined the TUAS data model to save 3 months, resolved over 10 PSA legacy port operation defects within 2 weeks, and improved quality with automated tests and code analysis tools.

Projects

  • GenMaster. Independent AI workflow and generation project with a FastAPI backend and Next.js frontend for image, video, audio, and story workflows, including prompt enhancement, story planning, workflow execution, GPU orchestration, and media-oriented pipeline tooling.
  • QuantMaster. Independent agent-driven trading research project with a Python FastAPI backend and Next.js frontend, combining multi-stage AI strategy-agent flows, replay and backtesting, and simulated or live broker workflows.

Education And Certification

  • Bachelor of Computing in Computer Science, National University of Singapore, 2017, score 4.48, with distinction and Computer Graphics specialization.
  • Certified ScrumMaster, Scrum Alliance, 2019.