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Senior Full-Stack Developer (Optimizely)

World leader in stone wool solutions, transforming volcanic rock into sustainable products with 12,200+ employees across 40+ countries.
Poznań, Poland
Frontend
Senior Software Engineer
Hybrid
5,000+ Employees
4+ years of experience
Enterprise SaaS · E-Commerce

Description For Senior Full-Stack Developer (Optimizely)

ROCKWOOL, the global leader in stone wool solutions, is seeking a Senior Full-Stack Developer to join their innovative e-commerce and marketing platform development team. This role offers an exciting opportunity to work on a modern tech stack including .NET 8+, NextJS, React, and various cloud technologies. The position is based in Poznań, Poland, where you'll be part of a collaborative and positive team environment.

The role involves developing scalable solutions for their composable, headless, cloud architecture platform, aimed at creating seamless customer experiences. You'll work across the full stack, from backend services to frontend implementations, while maintaining high standards of code quality and performance.

As a Senior Full-Stack Developer, you'll be responsible for implementing features, maintaining deployment pipelines, writing tests, and collaborating with business stakeholders. The tech stack includes modern technologies like .NET 8+, Optimizely CMS, Apache Kafka, NextJS, React, and Azure DevOps, providing an excellent opportunity to work with cutting-edge tools.

ROCKWOOL offers a compelling work environment with a strong focus on sustainability and innovation. The company provides excellent benefits including flexible working arrangements, private medical care, and various wellness programs. The modern office in Poznań's city center offers state-of-the-art facilities and a vibrant atmosphere.

This role is perfect for experienced developers who are passionate about technical excellence, have strong communication skills, and are interested in contributing to sustainable solutions. The position offers the opportunity to work on meaningful projects while being part of a global company with a strong commitment to environmental and social responsibility.

Last updated 14 hours ago

Responsibilities For Senior Full-Stack Developer (Optimizely)

  • Developing robust, scalable technical solutions
  • Implementing and maintaining automated build and deployment pipelines
  • Developing features across the stack—from data access and business logic to UI
  • Writing unit tests, fixing bugs, and documenting when needed
  • Troubleshooting and resolving production issues
  • Collaborating closely with business stakeholders

Requirements For Senior Full-Stack Developer (Optimizely)

JavaScript
TypeScript
React
Node.js
  • 4+ years of hands-on experience in Microsoft .NET/ASP.NET Core and SQL Server
  • Solid grasp of software design patterns and architectural principles
  • Proven experience in full-stack development with C# and web technologies
  • Strong understanding of performance, quality, and security in web applications
  • Familiarity with Agile practices like CI/CD, TDD, and code reviews
  • Experience with React is a plus
  • English proficiency at B2 level or higher
  • Excellent communication skills and collaborative mindset
  • Experience with serverless/microservices architectures
  • Knowledge of RESTful APIs on .NET
  • Experience with Headless CMS Optimizely setups

Benefits For Senior Full-Stack Developer (Optimizely)

Medical Insurance
Dental Insurance
Vision Insurance
  • Competitive salary
  • Permanent contract after probation
  • Development package
  • Team building events
  • Modern office in city center
  • Home office up to 2 days per week
  • Flexible working hours
  • Home office subsidy
  • Private Medical Care
  • Multikafeteria MyBenefit
  • Wellbeing program
  • Extra day off for voluntary activities
  • Modern office amenities including game room
  • Subsidized canteen

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