junior full-stack engineer

i'm luka, a self-taught junior software engineer with experience across frontend, backend, and correctness-critical systems.

my focus is on building software that is understandable, testable, and correct under real-world conditions.

i post all my work, from old to recent, on github to clearly be able to follow my development and learning.

i have worked on full-stack applications, backend services, and blockchain-based systems, with particular interest in execution flow, state management, and failure modes.

currently refining fundamentals through smaller, deeper projects and applied learning.

open for work — contact: lukaearth@proton.me

an early full-stack SaaS project built in 2025, focused on personalized AI-powered sales content generation via Telegram.

the project explored:

• end-to-end SaaS architecture (frontend → backend → AI)
• fine-tuned language models for tone preservation
• structured input validation and prompt design
• usage limits, rate control, and basic persistence
• real-world product constraints and go-to-market experimentation

stack:
React • Python • Telegram Bot API • OpenAI API • SQLite

status: archived (early-stage project)
website: https://postaaja.com

note: one of my first serious production-oriented builds

an experimental full-stack exchange application with strict correctness constraints and adversarial input considerations.

the project explores:

• stateful execution across distributed systems
• correctness-first smart contract design
• frontend-to-backend coordination
• automated testing and failure scenarios

stack:
Solidity • Foundry • Next.js • Viem • wagmi • RainbowKit • Tailwind CSS

status: testnet deployment (Sepolia)
live demo: CharonSwap (note: you need sepolia eth in your wallet to claim feth/chr)