(Senior) Frontend Developer (all genders) – JavaScript / TypeScript | CMS Integration

Who we are?:
Hey, we are TWT.

We are creative in finding solutions and innovative in technology. The needs and goals of our customers are always at the center of everything we do. We embrace open communication and get things done quickly.

With around 200 employees in Düsseldorf, Cologne, Bergisch Gladbach, and Heidelberg, we offer services in transformation strategy, tech & infrastructure, social & online marketing, and concept & design. Together, we realize groundbreaking digital visions for many well-known companies in the B2B and B2C segments, including Hellweg, Covestro, EIZO, Wörwag, Duravit, and SwissLife.

Respect, openness, and optimism characterize our collaboration. Together, we pursue one goal: to create added value for our customers through excellent work. As part of the Greven Foundation, we promote diversity and sustainability. We want to accompany companies in the long term and we value the success that comes from shared experiences and values.

Our team embraces creative freedom and digital, results-oriented collaboration, whether in the office or working 100% remotely, with plenty of room for your ideas. Our team's goal is to help our customers make data-driven decisions. With our digital specialists, you will experience intensive professional exchange, work with modern agile development methods, use tools for collaborative work, and be able to implement exciting projects together with us and benefit from a great deal of decision-making freedom.

Your mission:
• Develop, implement, and further develop modular, reusable front-end components and features in a modern JavaScript/TypeScript tech stack (preferably with knowledge of reactive frameworks such as Vue.js & Nuxt, React & Next, Angular).

• Design and implementation of scalable modules for headless and classic CMS systems, including integration of APIs, data sources, and individual content models.
• Setup, maintenance, and further development of a Storybook-based component library for customer-specific solutions and internal frameworks.

• Ensuring a clean code base through automated testing (unit, integration, visual regression) and structured technical documentation.

• Working closely with backend teams, UX/UI design, project management, and QA to deliver high-quality digital products.

• Actively shaping our software architecture, development processes, and tooling landscape.

• Exchange with colleagues and customers in order to clearly communicate technical contexts and accurately record requirements.

Your profile:
• Experience in developing secure, stable, and high-performance JavaScript/TypeScript applications.

• Knowledge of reactive frameworks such as Vue.js/Nuxt, React/Next, Angular, including routing, state management, SSR/SSG, and API integration.

• Knowledge of common CMS systems, e.g., Typo3, Shopware 6, Magento, Sitecore, Storyblok, Directus, Contentful.

• Experience in creating and maintaining component libraries using Storybook (Component Driven Development).

• Very good knowledge of modern HTML & CSS standards, W3C specifications, WCAG 2.2, responsive design, and current ECMAScript features.

• Routine experience in cross-browser and cross-device testing.

• Experience with CI/CD pipelines (e.g., GitLab CI, GitHub Actions, Azure DevOps, or comparable tools).

• Accessibility expertise: You can plan, evaluate, and implement accessible features.

• Experience with performance audits (Lighthouse, WebPageTest) and optimizing load times, Core Web Vitals, and rendering flows.

• Solution-oriented, structured work and the ability to weigh pragmatic and long-term decisions.

• Strong communication skills and active participation in an open feedback culture.

Our Offer:
• Flexible working models: Remote, workation, or hybrid options & time off in lieu for a good work-life balance

• Personal needs: Tailored solutions for everyone (e.g., choice of operating system, Germany-wide rail ticket, corporate benefits)

• Family Friendly: Everyday work that takes family needs into account

• Events: Christmas party, summer party, regular breakfasts, and much more

• Modern Workplace: Places of well-being: Each location has its own special features

• Sustainability @Work: Company forest, green electricity, and a climate-friendly vehicle fleet: We want to treat the environment well

• Skills & Development: We want to grow together with YOU. To this end, we invest in YOU in the form of individual training and development measures

• Social Security: Task forces that address issues such as diversity, inclusion, and mental health

• Pets @Work: Dogs are 100% welcome and even get their own dog basket

Contact:
We are committed to equality. Non-discriminatory working practices are part of our purpose. We expressly welcome applications from all individuals regardless of ethnic origin, skin color, nationality, gender, religion, ideology, sexual identity, disability, or age.

Once we have received your application, our Talent Acquisition Team will contact you. Please allow approximately one week for this.