PHP Full-stack Engineer (part-time)

About you

You are a skilled PHP Full-Stack Engineer who is comfortable working with existing systems and improving them step by step. You can quickly understand legacy code, identify practical solutions, and modernize a product without rebuilding it from scratch.

About the project

Our client is a Denmark-based startup with an established platform and active customers. The product was developed several years ago and now requires gradual modernization and further development. The main focus will be improving the existing functionality, moving selected administrative features to client self-service, and developing new modules, including Time Tracking, payroll preparation, and ESG. This is a long-term part-time opportunity with a flexible workload and the potential to increase involvement as the product and client base grow. You will become the main engineer responsible for understanding the system and supporting its ongoing development.

Your area of responsibility

• Supporting and developing the existing PHP-based HR platform;
• Analyzing the current codebase and suggesting practical improvements;
• Modernizing the system step by step without a complete rewrite;
• Moving selected admin features to client self-service;
• Developing Time Tracking, payroll preparation, and ESG modules;
• Integrating the platform with external services;
• Communicating directly with the client about priorities and solutions;
• Estimating tasks and ensuring effective use of development hours.

Skills and requirements

• 3+ years of commercial experience with PHP;
• Experience working with legacy PHP systems;
• Good knowledge of MySQL or MariaDB;
• Experience with HTML, CSS, Bootstrap, jQuery, and AJAX;
• Experience with server-rendered multi-page applications;
• Ability to understand and improve an existing codebase;
• Experience modernizing systems gradually without a full rewrite;
• Ability to work independently and take ownership of tasks;
• Strong communication skills and the ability to explain technical topics to a non-technical client;
• English level B2 or higher.

Will be a plus

• Experience with Laravel or another PHP framework;
• Knowledge of Apache and Linux.

We offer

• A real opportunity to influence the product, architecture, and technical decisions;
• Direct communication with C-level management, without unnecessary bureaucracy;
• Remote-first environment;
• Long-term and enjoyable cooperation;
• 20 paid working days of vacation per year;
• 5 paid undocumented sick days;
• Official public holidays as days off;
• Personal legal support;
• English classes;
• Team-building events and a friendly, supportive atmosphere.