Senior Frontend Engineer

We are the company that stands behind the spectacular success of CKEditor, used by millions of people around the world. At CKSource we produce software components that other developers use to build their applications (WYSIWYG editor, file manager, document converters, etc.). Our flagship product is CKEditor 5 – an open-source, modern TypeScript rich text editor with a custom data model and virtual DOM – check our GitHub repository. We're also innovating in AI — CKEditor AI integrates intelligent, in-editor AI features, making content creation smarter and more efficient.We are part of Tiugo Technologies, a launchpad for new developer platforms, helping software companies accelerate growth, increase operating efficiency, and scale their business. Tiugo’s current family of brands includes CKEditor, TinyMCE, ButterCMS, and Uploadcare. Together, our products power millions of software applications and websites - enabling content and communication for teams from Microsoft to NASA. You might not know our name, but you’ve probably used our software.Your new roleYou'll work on the development of our flagship products – CKEditor 5 and CKEditor AI; You’ll write clean, maintainable, and well-documented code (although well-written code doesn't need comments, or does it? 😉); You’ll use practices such as code review, pair programming, and testing; You'll share good practices on programming standards, tools, or other processes;You'll be developing features and services that will directly impact our customers’ experience and speed up our company’s growth.About youYou feel like taking up the challenge of working on an open-source application used by millions of usersYou have at least 4-5 years of experience as a Frontend Engineer.You have the ability to complete complex software projects and deliver products.You present strong programming skills and proficiency in TypeScript and JavaScript.You keep your hand on what’s going on in the web dev world, from frameworks to AI.You are focused on quality, tests, simple solutions, and clean code.Despite the knowledge that you already have, you feel there is always more to learn.You have a good command of English (at least B2) and advanced Polish (at least C1).Nice to haveContributing/contributed to open-source projects.Experience with AI tools in day-to-day development.What we offerA great atmosphere in a team of talented developers who are nice people, too :)Flexible working hours – we start our workday between 8-10. If you need to go out somewhere – no problem.Tasks tailored to your predispositions.The total monthly compensation package range for this position is 24 000 PLN - 32 000 PLN. Available forms of employment: agreement B2B or contract of employment.Quarterly and annual financial bonus depending on the company's performance.Additional days off and financial resources for personal development (up to 5 days and 6.000 PLN yearly, depending on the work experience).English lessons with a native speaker and an online language platform with the possibility to learn English, Spanish, and German.Private medical care (Enel Med or Medicover) and Multisport card.Access to mental health support and personal growth resources through Mindgram.2 weeks of parental leave for our contractors.Recruitment processScreening interview with HR and the Hiring Manager.Technical Interview with the Hiring Manager and Engineering team member.Short meeting with team members.