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Lazar K.LK

Lazar K.

Senior React Developer | Next.js & Design Systems

£346/day
Guevgueliya, MK
3-7 years

Average response time: 1 hour

About Lazar

🚀 Building scalable, high-performance web applications with modern architecture.

As a Senior Frontend Engineer, I specialize in turning complex requirements into pixel-perfect, reliable interfaces. I focus on Design Systems, SaaS architectures, and responsive web applications.

I don't just write code; I help product teams establish shared standards, improve code quality, and ensure long-term maintainability.

🛠 Tech Stack & Expertise:

Core: React 18/19, Next.js (App Router), TypeScript

Styling & UI: Tailwind CSS, ShadCN/UI, Framer Motion

Architecture: Design Systems, Component Libraries, Atomic Design

Quality: CI/CD, Unit Testing, Performance Optimization

💡 What I bring to your project:

Design System Leadership: I bridge the gap between design (Figma) and development, creating reusable component libraries that speed up future development.

Performance First: Optimization for Core Web Vitals, SEO, and accessibility.

Clean Code Standards: Strict typing, clean architecture, and rigorous code review processes.

🎯 Preferred Contexts: I thrive in product-focused teams, especially within the SaaS, MedTech, and GreenTech sectors, where code quality and user experience are paramount.

Available for complex frontend challenges and long-term architectural partnerships.
  • English

    Fluent

  • Macedonian

    Native or bilingual

  • Serbian

    Fluent

Remote only
Primarily works remotely

Experience

  • Upwork
    Freelance Web Designer and Developer
    TECH
    November 2022 - Today (3 years and 7 months)
    Gevgelija, North Macedonia
    • Remote Project Management: Operate as a full-cycle freelance developer, managing
    client communication, requirements gathering, and project delivery for diverse
    international clients
    • Development & Performance: Engineered responsive websites using React.js and Tailwind CSS, achieving a verified 20% reduction in bounce rates for client portfolios.
    • UI/UX Design: Crafted intuitive and visually engaging user interfaces by developing wireframes, prototypes, and high-fidelity mockups in Figma and Adobe XD.
    • Methodology: Applied Agile workflows to iterative design and development cycles, ensuring rapid feedback loops and adaptability to changing client needs.
    React.js TailwindCSS HTML/CSS/JS Typescript Next.js
  • Blocotechna
    Operator and IT Support
    DIGITAL AND IT
    August 2012 - July 2022 (9 years and 11 months)
    Gevgelija Municipality, Macedonia
    • Installed, configured, and maintained personal computers and peripherals to ensure reliable performance for staff.
    • Diagnosed and resolved hardware, software, and network issues in high-pressure environments, developing a structured approach to technical troubleshooting.
    • Monitored and maintained network security, including routers and firewalls, to protect against common threats.

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Education

  • Professional Front-End Engineering Program
    Frontend Masters
    2024
    Focus: React, Next.js & Front-End Architecture, UI, Styling, Performance & UX
  • Certified JavaScript Developer
    ITAcademy by LINKgroup
    2023
    Focus: Frontend JavaScript Development.

Certifications

Skill set

Categories