PHP Full-stack Engineer

Sevenpro; United States; Remote; USD 55,000 - 96,000; Part time

Benefits offered by this job

Remote-first environment

20 paid vacation days per year

5 paid undocumented sick days

Public holidays off

Personal legal support

English classes

Team-building events

Job summary

Sevenpro is seeking a PHP full-stack engineer for a long-term, part-time engagement. You will work with a Denmark-based HR tech platform, focusing on modernization and gradual improvements while supporting ongoing development.

You will own the understanding of the system, deliver incremental enhancements, and collaborate directly with the client to prioritize tasks and improve features such as Time Tracking, payroll preparation, and ESG modules.

Qualifications

• Strong commercial experience with PHP
• Experience 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

Responsibilities

• 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

PHP

Legacy PHP

MySQL/MariaDB

HTML/CSS/Bootstrap/jQuery/AJAX

Server-rendered apps

Codebase understanding

gradual modernization

Independent work

Communication

English B2+

Tools

Laravel

Apache

Linux

Job description

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 HR Tech 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

• Strong 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.