We are a digital media and games company. On a daily basis, we reach millions of users with our content, projects and games, such as the Nametests Instant Game on Facebook. We are a creative team pursuing our mission to “make people smile”; we are committed to entertaining people and aim to inspire their world. We use the latest technology in order to be highly adaptive in modern online business. Combined with our agile spirit and great teamwork, this allows us to achieve: More than 500 million people who played our games More than 120 million fans on Facebook Content and mini-games translated into more than 40 different languages The Social Sweethearts are looking for passionate and dynamic colleagues who want to join us in continuing to create a more colorful and entertaining world. The position of Senior Full Stack Developer (m/f/d) - Polyglot with focus on PHP and Javascript will have the following responsibilities; Refactoring, rebuilding, and updating our services in multiple programming languages, with a focus on PHP and JavaScript (React, Vue, and plain Vanilla) You will work on our core product: The Nametests Instant Game on Facebook, with more than 100 million active users The core responsibility is to conceptualise and implement new features for our in-house services, such as our CMS and custom-built analytics tool, with our editorial teams being your "audience" and the users of your product You will join a team of technical experts, and share the responsibility to also work on the public product, and ensure a no-downtime, performant and stable quality game for millions of users globally In your team, the highest goal is quality software, with a strong focus on maintainability, efficiency, performance and solid software architecture Requirements Stong technical experience in multiple programming languages, with a focus on PHP and JavaScript Expert-level understanding of performant database design and querying with either PostgreSQL or MySQL Strong experience writing unit tests, TDD is a plus Expert-level understanding of quality software architecture and design principles like SRP, OCP, LSP, ISP, DIP (e.g. SOLID) Strong experience building, using and maintaining deployment pipelines and CI/CD, with an appreciation of DevOps principles Follower of OOP principles Nice to have: Experience with Python Experience in the development of Facebook applications (Graph API) Experience in microservices infrastructure and Docker containerisation Experience with NoSQL databases like MongoDB, ElasticSearch or Cassandra Big Data project experience involving Machine Learning, Predictive Analytics or AI Benefits Friendly, collegiate atmosphere and colleagues who complement and support each other Down-to-earth founders and management, who understand their role as servant leaders Flat hierarchies with direct and transparent communication English office language and an international, multicultural and diverse team Emphasis on a healthy work-life balance and flexible working hours Learning, growth and development opportunities via trainings and knowledge sharing Fun and exciting team events on a regular basis