Senior Full Stack Developer

With 100 years of history ALK is on an ambitious journey to become the preferred allergy company globally. Since 2018 we have been investing heavily in digital consumer-facing activities and in 2022 we began focusing on expanding digital prescribers (doctors) base. Since then we are working on infrastructure projects to connect our B2B and B2C ecosystems enhancing the overall web & app experiences.

Our Digital Customer Engagement & Digital Excellence department takes a holistic approach to consumer and doctor interactions ensuring the right patient meets the right doctor at the right time. Through web engagement tools apps webinars and innovative partnerships such as AI chatbots on allergy clinic websites we aim to provide simple yet effective solutions for people living with allergies and the doctors who treat them.

The team operates globally in markets such as Germany Norway Denmark Switzerland Slovakia and Canada with more to come. To support this journey were looking for a new Senior Full Stack Developer to join our Digital Customer Engagement team.

The position

As a Senior Full Stack Developer working on our next-generation global CMS platform you will play a key role in the technical implementation of a multi-brand multi-region content infrastructure. Our platform is built around Sulu CMS (Symfony-based) and integrates content delivery editorial tooling DevOps automation and AI-assisted workflows.

You will work closely with our in-house Solution Architect a dedicated frontend developer and agency partners to shape the technical architecture implement robust backend features and ensure the platform remains scalable clean and future-proof.

Your role will involve both backend and light frontend development contributing to an efficient well-structured hybrid architecture (Twig potential headless).

Key Responsibilities

1. Application Development in Symfony Sulu

• Design and build backend features in Symfony (Sulu CMS framework) with clean scalable code.
• Extend and customize CMS functionality using Sulu content blocks structures and custom components.
• Implement hybrid frontend logic using Twig templates with frontend components (React or native JS if needed).
• Follow clean code and architectural principles (e.g. DDD-lite SOLID reusable modules).

2. Architecture Standards and System Thinking

• Collaborate with the architect and technical leads to shape a modular future-ready CMS core.
• Participate in key architectural decisions and system evolution across multiple brands and markets.
• Ensure the solution supports localization brand theming scalable content structures and future headless/API readiness.

3. Integration and DevOps Awareness

• Contribute to development of integrations with external platforms including APIs marketing tools and editorial services.
• Understand the structure of CI/CD pipelines container-based deployments (e.g. Docker Azure App Services) and infrastructure-as-code (Terraform) no need to maintain but ability to collaborate with DevOps team.
• Contribute to structured documentation and ensure code maintainability at scale.

4. Collaboration with Internal and External Teams

• Work with content and frontend developers PMs and our global agency to deliver features on time and with consistent quality.
• Review PRs and suggest improvements in code structure and system design.
• Participate in standups retrospectives and async collaboration using tools like GitHub ClickUp and Figma.

Our Tech Stack

• Backend: PHP 8 Symfony 6 Sulu CMS Doctrine
• Frontend: Twig HTML JS optionally React
• CI/CD & Infra: GitHub Actions Azure Pipelines Terraform Docker
• Content APIs & Tools: Headless-ready structure composable content blocks
• AI integration: Prompt-based tooling and dev automation pipelines (optional to use)

What were looking for

• Solid experience in PHP backend development with a strong focus on Symfony (Sulu CMS is a plus or willingness to learn).
• Architectural mindset ability to see the big picture and think modularly.
• Clean code enthusiast you care about code quality reusability and standards.
• Working knowledge of DevOps concepts (CI/CD containers environments) even if not hands-on.
• Understanding of hybrid architectures server-rendered views (Twig) coexisting with potential for API-first.
• Proficiency in API integration content-driven development and component reusability.
• Strong communication skills in English this is a cross-market project with multiple stakeholders.

Nice to have

• Experience with multi-language or multi-brand CMS platforms
• Exposure to headless CMS patterns or static site generators
• Interest in AI-assisted workflows and modern tooling
• Familiarity with performance monitoring DX tooling or content analytics

What we offer

• Dynamic Work Environment: Engage in meaningful projects that have a significant impact on our organization and customers.
• Collaborative Culture: Join a team that values knowledge creation and team engagement.
• Modern Office Amenities: Enjoy a workspace designed with Danish aesthetics open floorplans and collaborative areas.

Location: Kraków hybrid work possible (at least 2 days a week in the office)
Type: Full-time employment contract (UoP) B2B not an option

Why join ALK GBSC

• Empowered environment:Work closely with decision-makers in a flat agile organization that values your input.
• Modern workspace:Enjoy a beautifully designed office with an open floorplan ergonomic furniture and top-tier facilities in Kraków.
• Attractive benefits:Multicafeteria private medical care life insurance Pluxee card holiday donations company bikes birthday leave Christmas vouchers and company phones for all employees
• Work-life balance:Flexible working hours and a healthy work culture that prioritizes well-being and collaboration.

Join ALK and contribute to a meaningful mission while growing your skills in a supportive and international team.