Looking for a job

marko User

@markouser4

Message

Frontend Developer at Kulsys Technologies building production business applications and multi-tenant SaaS platforms.

Egypt

Message

At Kulsys Technologies, I develop and maintain production business applications with React, Next.js, and TypeScript. I handle feature delivery from requirements analysis through testing, deployment, and production support.

I built KPI Analyzer, a multi-tenant SaaS platform with role-based access control, KPI workflows, and LLM-powered decision support. As a freelancer, I delivered 11 web applications and improved page load times by approximately 30% through rendering and state-management optimizations.

Experience

Work history, roles, and key accomplishments

Current

Frontend Developer

Current

Kulsys Technologies

Mar 2026 - Present (7 months)

Develop and maintain production business applications using React, Next.js, and TypeScript within a modular monolithic architecture. Own feature delivery end-to-end, including requirements analysis, implementation, testing, code review, deployment, and production support.

React Next.js TypeScript Modular Architectures REST APIs Testing Code Review Deployment Production Support Performance Optimization

Current

AI Trainer

Current

Outlier

Feb 2024 - Present (2 years 8 months)

Evaluate AI-generated code and responses for reasoning quality, technical accuracy, and alignment with task requirements. Apply structured evaluation criteria to improve data quality and model outputs.

AI Evaluation Prompt Engineering LLM Code Review Quality Assurance

Current

Frontend Developer

Current

Freelancer

Oct 2023 - Present (3 years)

Delivered 11 web applications using React and Next.js, achieving 90+ Google Lighthouse performance scores. Worked directly with clients to translate business requirements into production-ready web applications.

React Next.js Performance Optimization SSR State Management Responsive Design Client Communication