Service pillar
Symfony developer for PHP applications and WordPress integration
Plan Symfony workSend me the system details.
Include the Symfony and PHP versions, the systems the application talks to, the hosting setup and the errors you have already seen in production.
- IntegrationsWP, ERP, CRM
- SyliusB2B commerce
- API PlatformREST and GraphQL
- Upgrades6.4 to 7.4 LTS
Where Symfony fits
I recommend Symfony when the application carries business logic that WordPress and Laravel handle less well: strict types across the codebase, a domain model with clear module boundaries, a long-running integration between WordPress and an ERP or PIM, or B2B sales on Sylius. For a company website or a blog, WordPress costs less to run and is easier for editors, and I say so before I quote.
What I work on
API Platform services with REST and GraphQL, Sylius extensions for B2B catalogues and price lists, Messenger handlers that sync orders and stock with SAP, Microsoft Dynamics or Salesforce, Mercure for live updates in the browser, EasyAdmin or Sonata back offices, and migrations from Zend Framework, CakePHP or Yii to Symfony 7.4 LTS.
What I avoid
I do not propose Symfony for marketing sites or simple content sites; WordPress serves those better. I also do not join a Symfony team as an extra pair of hands without a defined module I am responsible for, a deployment plan and a clear line between my code and theirs.
How does an upgrade between Symfony major versions work?
I move one major version at a time, always starting from the last minor release of the old line: 5.4 before 6.0, 6.4 before 7.0, 7.4 before 8.0. Everything a new major removes is already marked as deprecated in that last minor. In the dev environment the web debug toolbar shows those notices, and symfony/phpunit-bridge, installed with composer require --dev, prints a summary of them after the test run. Rector has Symfony rules that fix part of the code automatically, and I read every line it changes. Once the list is empty, I raise the constraints in composer.json, read UPGRADE-X.0.md for backward compatibility breaks and run composer recipes:update so the config files match the Flex recipes. The server has to keep up as well: Symfony 7.4 needs PHP 8.2 and Symfony 8 needs PHP 8.4.
What do you check when taking over a Symfony application?
First the versions: which Symfony branch the code runs on, when its support ends according to the official release page, and which PHP version the server has. Then composer audit, which lists installed packages with published security advisories. doctrine:migrations:status shows whether the production database matches the migrations in the repository; a gap usually means someone changed the schema by hand. In Messenger I look at the configured transports, whether a failure_transport exists and what is waiting in it (messenger:failed:show). Then the tests: whether they exist, whether they pass and what they cover. Last, configuration: which environment variables production needs, and whether passwords sit in the Symfony secrets vault (secrets:list shows their names) or in a .env file committed to Git. You get the findings in writing, with the risks ordered by severity.
How does Symfony work with WordPress and WooCommerce?
In most projects I join, WordPress stays where editors work, WooCommerce takes the orders and Symfony runs next to them as a separate application. API Platform serves data to a mobile app or a partner portal without loading WordPress. A Symfony integration layer moves orders, stock and prices between WooCommerce and the ERP, puts each message on a Messenger queue and retries it when the other system does not answer, so checkout does not wait for the ERP. When a B2B shop needs customer price lists and approval steps, Sylius, which is built on Symfony, is often a better base than WooCommerce with a long list of plugins. Drupal and TYPO3 also run on Symfony components, so the same knowledge carries over when one of them is the system on the other end.
Frequently asked questions
When is Symfony better than Laravel?
When the code needs strict types and clear module boundaries, when Messenger does a large share of the work asynchronously, or when Sylius or API Platform is already part of the system. Laravel runs production applications just as well; I choose by the team that will maintain the code and the systems the application has to talk to.
Do you work with Sylius?
Yes. Sylius is an open-source e-commerce framework built on Symfony, and I use it for B2B shops: plugins for catalogues and price lists, custom checkout steps, ERP integration and the shop front end.
Can you integrate WordPress with Symfony?
Yes. WordPress keeps the content, and a Symfony service sits between it and the ERP, CRM or PIM. That service validates every message against an agreed format, so a change in one system cannot break the other without anyone noticing.
Do you take pure Symfony work?
Yes, when the scope is written down and the system is one I can understand end to end. Most of my Symfony work is connected to WordPress or WooCommerce, but I also take on standalone Symfony applications that have a clear business purpose.
What about API Platform?
API Platform is part of my work. It builds REST and GraphQL APIs on top of a Symfony domain layer, with serialization, validation and JSON-LD output already in place. I use it when other applications read the data, for example a mobile app or a partner's system.
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Recommendations and reviews of working with WPPoland
Selected recommendations from WordPress, WordCamp and e-commerce leaders - with a focus on delivery on time, technical depth, and a business-driven approach to WordPress development.
Karolina Czapla
Marketing Strategist, Performance & Digital Strategy
“Working with Mariusz on WordCamp has shown me how rare it is to combine deep technical skill with genuine leadership. He plans, coordinates and delivers with precision, while giving the team space to grow and contribute....”
Co‑organiser, WordCamp Gdynia 2024 & 2025
Anna Kamińska
Talent Acquisition Specialist / HR People Partner
“Mariusz's portfolio speaks for itself. It reflects his precision, versatility and sense of responsibility. You can trust him to guide a project from idea to delivery, keep stakeholders informed and make sure things are d...”
Worked on the same team
Sarah‑Luisa Kwolek
IT Project Management & Product Owner, Web/App
“For over two years I could always rely on Mariusz to handle WordPress tasks calmly and professionally, from styling and templating to third‑party integrations. He brings steadiness to the team and keeps the frontend side...”
Mariusz was her client for WordPress work
Argert Boja
Senior Full‑Stack Developer
“Mariusz is the teammate everyone hopes for: strong full‑stack WordPress skills, clear explanations and a positive attitude even under pressure. He moves easily between custom plugins, performance work and Gutenberg layou...”
Worked alongside Mariusz on WordPress projects
Varun Patil
Growth & CRM Lead
“Beyond development, Mariusz understands SEO, analytics and growth. He talks directly with stakeholders, asks the right questions and ships solutions that move business metrics, from AMP to tracking to performance.”
Managed Mariusz on growth initiatives
Rafał Osiński
Founder @ EasyTrips.pl, Senior WordPress Dev
“I've known Mariusz through the WordPress community for many years. He's reliable, deeply involved and consistently shows up, at meetups, WordCamps and in projects. If you care about long‑term collaboration and someone wh...”
WordPress community co‑organiser
Daniel Blossfeld
Process Optimization & Digitalization Consultant
“I had the pleasure of working with Mariusz for almost three years. During that time, his WordPress development skills proved invaluable across a range of projects, from website builds to online member areas and even Shop...”
Mariusz was his client for WordPress work
Natalie Wiszczor
CRM & E-Mail Marketing Manager
“I had the great pleasure of working with Mariusz for over 4 years in the technical field. During this time, he proved to be a competent and reliable colleague. What stood out in particular was his friendly nature and his...”
Worked with Mariusz on different teams
Mark Chalklen
Head of Design & Build at Itineris Limited
“Mariusz is a great member of the team, always happy to get stuck into any task and happy to learn new things. A great communicator and all round nice guy to work with. Hard to beat on our weekly Strava leader board thoug...”
Managed Mariusz directly
Jessica Di Pasquale
Leading SEO initiatives with data-driven growth strategies.
“Mariusz is a very skilled, patient and expert guy. Always ready to help and to fix errors, I really appreciated working with him. He is such a great colleague!”
Managed Mariusz directly
Biki John
Content Marketing Aficionado & SEO Enthusiast
“It was great to work with Mariusz. I really appreciated his extensive knowledge of WordPress and how that came in handy whenever I needed support navigating the CMS. I commend Mariusz totally for his patience, good natur...”
Worked with Mariusz on different teams
Rafal Borowiec
Software Developer, Consultant, Manager and Lecturer
“I had an opportunity to work with Mariusz for 7 months. He excels in technical optimization for search engines (SEO). Mariusz has also strong expertise in AMP development, GTM, and GA. Mariusz feels very comfortable with...”
Managed Mariusz directly
Belinda Koch
Web-Tracking Analyst at TUI
“Mariusz is a great person to work with. He is extremely motivated to learn new things and share his knowledge, and is very knowledgeable on a wide range of topics. We worked together on digital analytics and tracking top...”
Worked with Mariusz on digital analytics and tracking topics
Ali Nezamolmaleki
Growth, SEO, Analytical thinking, AMP
“Mariusz is an extremely talented person in his field of work. He is always capable of giving a new perspective to solve problems and to think out of the box in situations where everything seems to be locked. Working with...”
Worked with Mariusz on the same team
Karol Jakubcewicz
Front-end / JavaScript Developer
“Mariusz is an incredibly experienced WordPress developer and SEO/SEM specialist I've had the pleasure to work with for almost two years. As a pilot of the team responsible for AirHelp's website development, he's been one...”
Worked with Mariusz on the same team
Paweł Lewczuk
Front-end developer, WordPress developer
“I collaborated with Mariusz on several projects and our cooperation was always exemplary. I believe there are many more joint projects ahead of us. Highly recommended!”
Mariusz was Paweł's client
Przemek Wroblewski
Software Developer with 20+ years of experience
“I found Mariusz as someone with great expertise and profound knowledge of frontend solutions. Powerful, knowledgeable and accountable WordPress developer. Has an easiness to build interpersonal relations with others. He ...”
Worked with Mariusz on different teams
Send me the system details.
Include the Symfony and PHP versions, the systems the application talks to, the hosting setup and the errors you have already seen in production.
Plan Symfony work