Full-Stack Developer (Frontend focus)

SerbiaOn-siteSenior

We are looking for a proactive Full-Stack Developer to join our team. You will be responsible for the technical foundation of our ecosystem. We need an engineer who can design frontend architectures from scratch, conduct R&D for new tools, and deliver pixel-perfect, high-performance layouts supported by solid PHP backend logic.

Responsibilities

  • Architecture & Design: Design frontend application architectures from the ground up. Perform technical complexity assessments and create detailed technical designs for frontend solutions.

  • Development & Engineering: Deliver high-quality, professional web layouts and functional features within sprint cycles. Ensure robust backend support using PHP where required.

  • Quality Assurance: Maintain a clean and scalable codebase through regular code reviews and efficient bug fixing.

  • R&D & Innovation: Continuously research (R&D) new libraries and tools, evaluating their potential to improve our development process and product quality.

  • Planning & Estimation: Actively participate in sprint and quarterly planning. Decompose complex high-level features into manageable technical tasks and provide accurate resource/time estimates.

  • Process Management: Work closely with the team to ensure architectural consistency across all web products.

AI-Native Skills

  • AI-Augmented Development: Expert use of AI-driven IDEs to delegate unit testing, documentation, and boilerplate code generation.

  • Context Management: Skill in managing "context" for AI agents to ensure accurate, hallucination-free code generation.

  • AI-Powered Debugging: Utilizing AI for deep log analysis and automatic generation of performance hotfixes.

Requirements

  • 3+ years of experience in modern Frontend development (React, Next.js or similar).

  • Strong experience in designing application architecture and making strategic technical choices.

  • Solid proficiency in backend development with PHP (integration with APIs, business logic).

  • Professional expertise in HTML5, CSS3 (Sass/Less, Tailwind) and pixel-perfect responsive layout.

  • Practical experience with GitLab CI/CD, Docker, and Git.

  • Proven ability to decompose business requirements into technical sub-tasks.

  • Knowledge of SOLID, DRY, KISS principles and experience in writing maintainable code.

Published on: 3/23/2026

Unlimit

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Unlimit is a cross-border payments company that works with e-commerce merchants, offering payment gateway services and acquiring for online stores, high-risk businesses and an on&off-ramp fiat solution for crypto, DeFi, and GameFi.

We operate both locally and internationally with ease across Europe, the UK, LATAM, APAC, India, and Africa.

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