Hi, I'm Lukas Kristianto

Lead Mobile Engineer & AI Specialist

Passionate technologist with 8+ years experience building cutting-edge mobile solutions. Currently leading cross-platform teams at APP Sinarmas while driving Mobile and AI innovation through TensorFlow and LLM integrations.

Lukas Kristianto

Professional Profile

Lukas Kristianto

Mobile Engineer • AI Enthusiast • Mentor

I specialize in building high-performance mobile applications for Android and iOS using Kotlin and Flutter, while leveraging machine learning to solve real business challenges at APP Sinarmas. My passion lies at the intersection of mobile development and data-driven solutions.

As a mentor, I simplify complex concepts in Android development, enabling teams to build applications efficiently. My technical leadership has modernized legacy codebases and established development standards across multiple enterprise systems.

Leadership Philosophy: I believe in empowering teams through trust, open communication, and continuous learning. My approach centers on fostering a collaborative environment where every member feels valued and motivated to contribute their best. By setting clear goals and providing mentorship, I help teams navigate challenges, embrace innovation, and achieve outstanding results together.

Best Employee 2024 (APP Sinarmas)
6% Revenue Growth Achieved
40-70% Performance Improvements

My Expertise

Android and Flutter Development8+ years
AI/LLM Integration2 years
Next.js & Tailwind1.5 years
Team Leadership2 years

Leadership Experience

Lead Software Engineer

APP Sinarmas (Asia Pulp & Paper)

Jan 2025 - Present

Team Leadership

  • Lead a cross-platform mobile team of 6 engineers
  • Mentor junior/mid-level engineers through code reviews
  • Establish architecture standards and best practices
  • Implement agile methodologies and CI/CD pipelines
  • Lead project planning, manage timelines, and coordinate cross-functional collaboration

Technical Achievements

  • Modernized legacy Android codebases
  • Implemented Jetpack Compose across 5+ enterprise systems
  • Pioneered Plate Number Recognition with TensorFlow
  • Developed Internal Social Media (30k+ users)
  • Researched and implemented LLM (Large Language Model) solutions for mobile AI features

Senior Software Engineer

APP Sinarmas (Asia Pulp & Paper)

Apr 2021 - Dec 2024

Key Projects

  • Sales Force Automation (IDR 10B daily transactions)
  • ATOWN Internal Social Media (30,000+ APP Sinarmas Employee)
  • Forestree Plantation System
  • Tracking Ship/Log Systems

Innovations

  • Reduced app sizes by 40-60%
  • Improved performance through Compose
  • Document Classification with CNN TensorFlow
  • Standardized Android development practices

Professional Experience

Software Engineer Android

Tokopedia

Apr 2019 - Apr 2021

Performance Optimizations:

  • Home Page: 5s → 1s load time
  • Official Store: 4s → 2.3s
  • Wishlist: 2s load with DiffUtil

Key Achievements:

  • Reduced APK size by 70% (98MB → 30MB)
  • Implemented TDD (92% coverage)
  • Developed Tokopedia Play video feature
  • Automated Dark Mode for 326 modules

Full-Stack Engineer (Freelance)

Aug 2023 - Present

PT. Rapier Technology

  • Developed Android apps with Clean Architecture
  • Built multiplatform apps with Flutter (BLoC/GetX)
  • Created backend services with Golang

Android Engineer

Oct 2022 - Jan 2023

ASTRO

  • Built chat app with Jetpack Compose
  • Developed Warehouse Management System
  • Implemented Android best practices

Flutter Engineer

July 2023 - present

Mutter

  • Built Flutter Mobile App for Mutter Breast Pump
  • Maintained and enhanced app features based on user feedback
  • Optimized performance and ensured seamless device connectivity with BLE

Android Engineer

July 2017 - March 2019

RENSEKI

  • Built POS System app with Java and Kotlin Native
  • Developed Sales Force Application with Flutter
  • Implemented Android best practices

Highlighted Projects

Technical Skills

Mobile Development

  • Android (Kotlin/Java)
  • Flutter
  • Jetpack Components
  • Material Design
  • Firebase

AI/ML Development

  • LLM Integration
  • TensorFlow Lite
  • Natural Language Processing
  • Hugging Face
  • Prompt Engineering

Web Development

  • Next.js
  • Tailwind CSS
  • TypeScript
  • Node.js

Other Skills

  • Team Leadership
  • Agile Methodology
  • CI/CD Pipelines
  • Microservices
  • Cloud (AWS/GCP)