(Senior) PHP developer - Freelance

At Netguru, we're all about helping innovators and entrepreneurs shape the world through beautiful software. That is our mission.

With employees from 15+ different countries, we've worked with over 800 clients from more than 50 countries. To name some of them: OLX Motors Europe, UBS, Careem.

But we're not just another tech company. As a Certified B Corporation®, we're dedicated to creating an inclusive environment for all, and we take our commitment to sustainability seriously.

How freelancing works at Netguru?

As a Netguru freelancer, you can choose what works well for you. You decide when, where, and how you work on projects and tasks.

We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills.

But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team.

So, are you ready to make an impact? Join Netguru, and let's build beautiful software together.

• Looking for: 2 PHP Developers & 2 Senior PHP Developer for two different projects.
• We offer: 100% remote work, flexplace, dev-friendly processes, long-term collaboration.

#1 Project

Search: 2 PHP Developers and 1 Senior PHP Developer

Start: asap

Duration: 6 months

Working Hours: CET

Project Description:

A platform for digital products and services that has succeeded in over 10 markets. In the financial year 2025, they achieved key milestones in payment processes in the UK and Germany, enabling revenue generation exceeding £500,000. At the same time, they laid important foundations for platform stability and DevOps.

Scope of the project:

1. Evolving towards a standardized, scalable architecture.
2. Introducing reusable order fulfillment types.
3. Building signal-based workflows.
4. Preparing for Agentic AI (platform signals, APIs, structural metadata).

#2 Project

Search: Senior PHP Developer

Start: asap

Duration: 3 months

Working Hours: CET

Project Details:

Our client is seeking a specialist to audit, re-architect, and reskin their current Mautic integration embedded within their proprietary CRM product, LeadSpark. The existing implementation faces critical performance and usability issues due to architectural mismatches and unoptimized frontend workflows.

This is not a greenfield project. Mautic is already integrated and deployed across multiple tenants with live user data. However, the setup requires major backend rework and frontend UX simplification to reach production-grade stability.

Goals & Scope of Work:

1. Replace Cron-Based Sync Model with Event-Driven Architecture:
1. Replace existing hourly cron jobs with asynchronous, event-based synchronization.
2. Use a queue system (SQS, RabbitMQ, etc.) to trigger updates on change.
3. Outcome: Eliminate delays and prevent privacy consent mismatches.
2. Architectural Refactor for Multi-Tenant Compatibility:
1. Mautic is single-tenant; LeadSpark is multi-tenant.
2. Refactor sync architecture to support tenant isolation or restructure Mautic to accommodate multi-tenancy.
3. Complete Reskin and UX Overhaul of the Email Campaign Interface:
1. Redesign campaign builder, email editor, segment targeting, and preview flows.
2. Replace or customize GrapesJS and CKEditor for dealer-friendly UI.
3. Optional: Create standalone UI interfacing with Mautic APIs.

Current Tech Stack:

• LeadSpark CRM: Node.js backend, React frontend
• Mautic: PHP-based marketing automation (v4.x/v5.x)
• Data Sync: Hourly cron jobs
• Frontend: GrapesJS, CKEditor (partially modified)
• Infrastructure: Cloud-hosted (details available under NDA)

Deliverables:

• Architecture plan for backend sync redesign
• Implementation of queue-based sync
• Frontend reskin of campaign UI
• Developer documentation and deployment plan
• Optional: QA checklist and regression testing suite

• eCommerce: Sylius v1 → Currently, an upgrade to Sylius v2 is planned, which must be completed by the end of the calendar year.
• Hosting on Azure (NGC/GHS).
• CMS: DatoCMS.
• Frontend: TypeScript/Next.js.
• Close collaboration with a small dedicated product team.
• Fluency in English (B2+)- both written and spoken is needed.

PHP and Symfony expertise is fundamental for Mautic development. Successful Mautic developers typically possess:

• Core Technical Requirements
• Strong PHP programming skills - essential since Mautic is primarily PHP-based
• Symfony framework experience - critical for understanding Mautic's architecture
• MySQL/MariaDB database knowledge - for data management and optimization
• JavaScript proficiency - for frontend customization and tracking implementation
• HTML/CSS skills - for template and theme development
• Mautic-Specific Expertise
• Experienced Mautic developers should understand:
• Marketing automation concepts - to effectively implement business requirements
• Plugin development - for extending core functionality
• API integration - for connecting with external systems
• Campaign and form creation - core Mautic features
• Email template development - including MJML and GrapesJS
• Advanced Developer Capabilities
• Expert-level Mautic developers often have:
• Custom integration development - connecting Mautic with CRMs, ERPs, and other business systems
• Performance optimization experience - for handling large-scale deployments
• Multi-tenant architecture knowledge - for enterprise implementations
• Security best practices - especially important for marketing data handling

• Fluency in English (B2+)- both written and spoken.

What's in it for you? Becoming a Netguru Freelancer means:

• Flexibility: 100% remote work.
• Professionality: dev-friendly processes, like Continuous Integration and Code Review, work in line with Agile methodology.
• Diversity: projects from various industries like fintech, healthcare, insurance, or education.
• Growth: work with a team of experts and continuous development of your hard and soft skills.
• Knowledge: knowledge sharing sessions, internal knowledge base.
• Curious to learn more about working as a Netguru freelancer? All the information you need is here: Netguru Talent Marketplace.

Looking for a full-time job? Check out our Career Page and find out more about our open recruitment processes.

Don't hesitate and apply right away!

At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help!