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Symfony agency for custom PHP applications

We build, modernise and maintain Symfony applications, from architecture to day-to-day operations. With SensioLabs, the company behind Symfony, as a creativestyle brand, we work right at the source of the framework.

What a Symfony agency does for you

A Symfony agency builds custom web applications, platforms and interfaces on the Symfony PHP framework. It comes in when off-the-shelf software falls short: for your own business processes, complex integrations or applications meant to grow over many years.

Our job goes beyond writing code. We plan the architecture, safeguard code quality, keep your application on current Symfony versions and, if you want, run it for you. For what makes the framework itself tick, see our page on Symfony as a PHP framework.

Our Symfony services

Whether it's a new application, a grown codebase or extra capacity for your in-house team, we step in where you need us.

We build web applications, portals, backends and SaaS products on Symfony, shaped by your processes rather than the limits of off-the-shelf software.

What sets us apart as a Symfony agency

Symfony applications often run for many years, so what matters is not just who writes the code, but who understands it in the long run. Four things make the difference:

  • Close to the framework: With SensioLabs, the company behind Symfony, as a creativestyle brand, best practices flow into your project straight from the source.

  • Certified team: Our developers hold Symfony certifications and are active in the community, from SymfonyCon to local meetups.

  • Commerce experience: Shopware and Sylius are built on Symfony, so we also know the framework from large e-commerce projects.

  • Honest assessment: If an off-the-shelf solution suits your project better, we'll tell you in the first conversation.

SensioLabs Partner award trophy on a dark background

How a Symfony project works

Whether it's a new build or taking over an existing application, every project follows the same six steps.

1. Analysis

We clarify goals, processes, systems and constraints. For existing applications, this starts with a code audit.

2. Architecture

We define structure, interfaces, data model and hosting before the first line of code is written.

3. Development in sprints

We work iteratively, with regular demos and code reviews, so you always know where the project stands.

4. Testing and quality assurance

Automated tests, static analysis and CI/CD safeguard quality with every release.

5. Go-live

Deployment, monitoring and handover to your team or to our operations.

6. Maintenance and upgrades

Security updates, version upgrades and further development on a fixed schedule.

Your Symfony team

Oskar, General Manager SensioLabs
Oskar
General Manager SensioLabs
Stiven, Back-end Developer

Certifications:

Certified Symfony 7 Developer

Stiven
Backend Developer
Silas, Team Leader, Back-end Developer

Certifications:

Certified Symfony 7 Developer

Certified Symfony 8 Developer

Certified Twig 3 Designer

Microsoft Technology Associate: Database Fundamentals

Silas
Team Leader, Backend Developer
Jakub, Back-end Developer

Certifications:

Certified Developer Advanced

AWS Certified DevOps Engineer - Professional

AWS Certified Developer - Associate

AWS Certified Cloud Practitioner

AWS Certified SysOps Administrator

AWS Certified Data Engineer - Associate

AWS Certified Solutions Architect - Associate

Shopware 6 Certified Frontend Developer

Shopware 6 Certified Advanced Template

Shopware 6 Certified App Developer

Shopware 6 Certified Solution Architect

Shopware 6 Certified PaaS Specialist

Shopware 6 Certified Advanced Developer

Shopware 6 Certified Backend Developer

AWS Certified DevOps Engineer

Jakub
Technical Authority / Backend Development Services
Mariusz, Back-end Developer

Certifications:

Symfony 5 Certified Developer

Twig Designer

Mariusz
Backend Development Services
Michał, Front-end Developer

Certifications:

Certified Mid-Level Vue.js Developer

Certified Mid-Level React Developer

Certified Twig 3 Designer

Certified Junior React Developer

Shopware 6 Certified Frontend Developer

Shopware 6 Certified Advanced Template Designer

Shopware 6 Certified App Developer

Shopware 6 Certified Solution Architect

Michał
Frontend Development Services
Timo, Project Manager
Timo
Customer Success Manager

Active in the Symfony community

Whether at SymfonyCon, meetups or workshops, we're where the Symfony community meets, and we bring what we learn straight into your projects.

Five team members posing with a company banner

SymfonyCon 2022, Disneyland Paris

Group of people at a SymfonyCon Amsterdam 2025 booth with various company banners

SymfonyCon 2025, Amsterdam

Man posing next to a SymfonyCon Paris 2022 pixel art wall

SymfonyCon 2022, Disneyland Paris

Outdoor rooftop presentation with a projector screen showing a Symfony technical slide

Symfony Meetup Cyprus 2025

Two men posing in front of a black and white checkered Symfony logo backdrop

SymfonyCon 2024, Brussels

php logo

Need to convince your stakeholders about PHP?

Technology decisions are often shaped by personal preference or internal politics. Looking for solid arguments why PHP is still one of the most robust technologies for custom applications at global scale? Our project why-php.com has them.

Our Symfony projects

How we use Symfony in real projects: custom applications that run reliably for years and grow with the business.

Staffbase

Staffbase is a corporate communication platform that connects employees via an intranet portal or mobile app. It enables engagement, news delivery, and knowledge sharing for distributed organizations.

  • Fragmented, insecure WordPress landscape across multiple instances

  • Poor scalability and performance for rapid international growth

  • Inefficient workflows due to lack of uniform component structures

Staffbase mobile e-commerce interface showcasing AI guidelines for communicators and employee experience resources

SensioLabs

As the creator of the PHP Framework Symfony, SensioLabs provides expert consulting, architecture design, migration, and support for companies leveraging Symfony and various open-source technologies.

  • Relaunching international platform on modern Symfony/Headless CMS architecture

  • Implementing fully automated CI/CD pipelines for builds and deployments

  • Maintaining performance and code quality across complex system integrations

SensioLabs mobile interface showcasing architectural workshops and Symfony project services

FAQ

A Symfony agency builds custom web applications, platforms and interfaces on the Symfony PHP framework. Its work covers architecture, development, testing, upgrades to new Symfony versions, and the operation and maintenance of the application.

Benedikt, Director Partnership and Growth

Let's talk about your Symfony project

New application, upgrade or code audit: in a short call, we'll clarify where you stand and what a sensible next step looks like.

Benedikt Merl

Director Partnerships & Growth