Kiril Mladenovski
Full Stack Engineer with 5 years of experience specializing in React, TypeScript and Next.js, delivering solutions that prioritize client satisfaction. Led 8 projects throughout his career, the latest being a cutting-edge AI SaaS app. Known for attention to detail, constantly delivering high-quality work including pixel-perfect design implementations. Always seeking new challenges and learning opportunities, with a commitment to shipping value-driven solutions.
REVIEWS FROM CLIENTS
Local navigation mobile app launched in December 2025. Grew to 10k users and is still running in production.
- Started with a c...
Local navigation mobile app launched in December 2025. Grew to 10k users and is still running in production.
- Started with a coffee and an idea from the founder. Left as the lead engineer on the project.
- Made the stack calls: React Native for the mobile app, Postgres with PostGIS for location queries, Redis, Docker.
- Brought on a mobile developer (referral from the Onli CTO) to build the React Native app. Coordinated with him throughout, designed and delivered the backend API endpoints he needed.
- Built the full backend and web admin panel myself - ElysiaJS, Vite + React
- Tight budget meant hard choices on scope, worked with the founder on what to cut and what to keep, prioritizing the features that actually needed to ship for launch.
- Set up production deployment with backups.
Reported directly to the CTO across two phases of work.
Phase 1 - Client project:
- Took a messy Next.js + Go codebase ...
Reported directly to the CTO across two phases of work.
Phase 1 - Client project:
- Took a messy Next.js + Go codebase for one of Onli's clients, cleaned it up, built out the missing features, and shipped it to production - the company's first client to actually go live.
Phase 2 - Onli Cloud
- Onli Cloud is the developer platform on top of Onli's core asset technology - it's where developers build "Appliances" that interact with digital assets. Onli Cloud started as an early prototype the CTO had built to show shareholders. I took the concept and built the product from scratch.
- Owned UI/UX end-to-end — handed rough notes on how things should work and left to figure out the rest. This is where I started moving from full-stack to product engineer.
- Migrated the codebase to Turborepo so the product could support multiple versions of the core gRPC packages in parallel.
- Since the users were developers, I wrote a DX-friendly wrapper library on top of the painful proprietary gRPC packages they'd otherwise have to use directly.
- Built the Stripe billing flow. Webhook-heavy, since payments triggered VPS provisioning on the backend.
Led the development of an AI Micro SaaS project using Next.js and Go, integrating Generative AI APIs and OCR (Tesseract) as key parts ...
Led the development of an AI Micro SaaS project using Next.js and Go, integrating Generative AI APIs and OCR (Tesseract) as key parts of the solution.
Engineered a comprehensive authentication flow implementing access and refresh tokens for robust session management, showcasing quick adaptability to Go programming.
Delivered pixel-perfect frontend implementation, ensuring 1:1 fidelity with the Figma design using the screenshot comparison method, exemplifying meticulous attention to detail.