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Next.js · Flutter · AI products

YULIUSKEVIN

Full Stack, Mobile & AI Engineer
building web, mobile & AI
products that ship — refined, reliable, secure.

4+ years·15+ projects·6 clients·3 certifications

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Remote · Worldwide

About

Full-stack and AI engineer building for the web and mobile, with a growing focus on AI-powered productsthat put language models to real use. I care about more than load times: interfaces with purpose, systems that hold up, and software that's still a pleasure to use six months later. Open to interesting problems.

Yulius Kevin
AvailabilityRemote · Open worldwide
CurrentlyBuilding & shipping side projects
Open toFull-time, contract, or a coffee chat
Reply within24 hours, usually faster
Selected Clients

TRUSTED
BY

Designito
Enigwatch
JAECOO
Menstudio
Sohnne
The Panel Hub
Work

SELECTED
PROJECTS

What I Build

HOW I
CAN HELP

Available for new projects

SaaS Products

End-to-end product engineering — from data schema and auth to deployment and post-launch iteration. Built to scale from day one.

AI Integrations

LLM-powered features, streaming interfaces, and agentic workflows wired into real products. Production-grade, with rate limiting, observability, and fallback handling built in.

Mobile Apps

Cross-platform Flutter applications for iOS and Android. Shared logic, native feel, deployed to both stores with proper state management and offline support.

Web Systems

Marketing sites, e-commerce platforms, and CMS-driven catalogs engineered for performance. Core Web Vitals optimized, editor-managed, and built to last.

Experience

WORK
HISTORY

2025 — Present
SOFTWARE DEVELOPER
Designed and shipped custom web and mobile software for multiple clients across Next.js, Astro, and Flutter. Owned features end-to-end — from system design and Supabase backends to containerized deployments on AWS EC2 and DigitalOcean.
Next.jsFlutterSupabaseDocker
2024 — 2025
FULL-STACK DEVELOPER
Built and maintained production e-commerce and content systems on Shopify, WordPress, and Next.js. Customized Shopify themes and Liquid components, integrated payment gateways, and shipped performance refactors that cut layout shift on key pages.
ShopifyWordPressNext.jsLiquid
2022 — 2024
FRONT-END ENGINEER
Translated Figma designs into modular, component-based architectures using React and Laravel Blade. Collaborated with backend engineers on REST APIs and improved front-end performance through targeted refactors.
ReactLaravelFigmaREST APIs
Stack

TECH
STACK

click
TypeScript
Expert
4+
Years
Used across
all projects
click
React
Expert
4+
Years
Moodflix
JAECOO
click
Next.js
Expert
3+
Years
Moodflix
AI PDF Analyzer
click
Tailwind CSS
Expert
3+
Years
All Next.js
projects
click
Supabase
Advanced
2+
Years
Moodflix
Client apps
click
Node.js
Advanced
3+
Years
OpenClaw
Backend APIs
click
Flutter
Advanced
2+
Years
Mobile client
applications
click
OpenClaw
Advanced
<1y
Years
Multi-channel
AI gateway
click
NestJS
Intermediate
2+
Years
OpenClaw
REST & WS APIs
click
PostgreSQL
Advanced
2+
Years
Moodflix
Zero Stunting
click
AWS
Intermediate
2+
Years
EC2, S3, Lambda
Deployments
click
Shopify Liquid
Intermediate
1+
Years
E-commerce
client work
click
Drizzle ORM
Advanced
1+
Years
Moodflix
schema + RLS
click
Docker
Advanced
2+
Years
Containerized
dev workflows
click
LLM Integration
Intermediate
1+
Years
Moodflix
AI products
click
Payment Gateway
Intermediate
2+
Years
Stripe · Xendit
PayPal
Certifications

CERTIFICATIONS

2026
AI Fluency: Framework & Foundations
Anthropic
2026
Claude Code in Action
Anthropic
2026
Python Object-Oriented Programming
Coddy
Contact

LET'S BUILD
SOMETHING
GREAT.

[email protected]
GitHub↗LinkedIn↗