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Senior Full Stack Engineer (Frontend Focus)


Joining charles as a Senior Frontend Engineer means you will play a key role in crafting the user interface of our groundbreaking graphical automation workflow tool. Your expertise will not only bring life to our client interactions on WhatsApp but also set a new industry standard for conversational commerce platforms. The innovation and robustness you bring to the frontend development process will have a direct impact on the satisfaction of our users and will significantly shape our growth trajectory.


  • Develop and maintain our conversational commerce graphical workflow tool, focusing on a high-quality user experience.

  • Utilize the latest frontend frameworks and technologies, including Typescript and Node.js, to build scalable and maintainable codebases.

  • Collaborate with backend developers to create a unified and efficient system through REST API consumption.

  • Write comprehensive unit and end-to-end tests to uphold the reliability and functionality of the application.

  • Apply your profound (S)CSS knowledge to create visually appealing and brand-consistent user interfaces.

  • Optimize application performance to ensure a smooth and efficient user experience.

  • Assist in the decision-making process regarding the selection of frontend technologies and tools.

  • Work closely with UX designers, product managers, and other stakeholders to execute the product roadmap and deliver features that meet business objectives.

  • Proactively suggest improvements to the current frontend infrastructure and participate in code reviews to ensure the highest quality of code standards.


  • Proven experience with frontend engineering and a solid understanding of at least one modern UI framework (Vue, React, Angular, Svelte). We love Vue.

  • Proficiency in Typescript and Node.js is essential.

  • You have experience with REST APIs and their integration into frontend applications.

  • A strong command of unit and e2e testing is required, ensuring our software's quality and stability.

  • Your (S)CSS skills are advanced, allowing you to create intricate designs with maintainable and scalable code.

  • Additional experience with Vue 3, Tailwind, Postgres, TDD, Playwright/Cypress, HTML Canvas/WebGL, clean code practices, and an eye for UI performance would be advantageous.

  • An understanding of lean and agile development methodologies.

  • Strong communication skills - you can articulate your ideas to peers and stakeholders alike.

  • A bachelor's or master's degree in computer science or another relevant technical field—or equivalent experience—is preferred.


  • Working on challenging and impactful projects at the forefront of one of the most innovative industries in Europe

  • Collaborating with some of the leading experts in Conversational Commerce and disrupting a fast-growing industry

  • Joining forces with a unique community of Tech, Product, Sales, Success, and Marketing experts committed to building the best product in Conversational Commerce

  • Having high visibility and impact across the business with the option to own and drive new initiatives

  • Celebrating our major and micro-wins as well as getting to know each other better at regular team-building events

  • Sharing ESOP (virtual stock options) in the ownership and success of charles

  • Working in a brand new office in the heart of Berlin overlooking the Wall memorial

  • Earning a competitive compensation package

What else we offer?

  • Urban Sports Club membership

  • A weekly personal trainer

  • Meditation session on Tuesdays

  • Free company lunch on Thursdays

  • friendly, open, multicultural work environment

  • Dog-friendly office

  • Discounts on BVG tickets

About us

It’s better to have a conversation

charles is a SaaS startup that enables brands to use the full potential of WhatsApp Business. With our platform, businesses can chat with customers, send marketing campaigns, sell products, analyze results and automate processes. And we go beyond the tech to offer ongoing consultancy for future success. Our vision is to become the global backbone of conversational commerce (cCom): a world in which all consumers can enjoy personal, rewarding, heartfelt conversations with the brands they love.

Founded by Kapten & Son co-founder, Artjem Weissbeck, and ex-McKinsey e-commerce lead, Andreas Tussing, charles is backed by Salesforce Ventures, Accel, and HV Capital. We received €30 million in total funding and are now pushing for the next big stage of our growth. This makes now a good time for you to join us on this journey!

charles and diversity: be yourself and no-one else

Different perspectives bring innovation and richer work environments. We’re committed to building an inclusive company where you always feel like you belong, whatever your age, gender identity, ethnicity, religion, sexual orientation, disability, status or neurodiversity. These values sit at the heart of our hiring process, so we can create a welcoming workplace where everyone feels valued and heard.

⚠️ When applying, it would be appreciated if you could specify that you found this job on This helps us in attracting more companies to post their vacancies here. Thank you!

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