Certainly is a cutting-edge Conversational AI Platform designed to revolutionize ecommerce and customer service. Our platform is engineered to build bespoke AI conversational chatbots for complex global customer service journeys, addressing multi-domain and multilingual demands.

We are a dynamic team of around 20 experts working in a hybrid setup. Management is based in Copenhagen, while product development takes place throughout Europe. With years of experience in Conversational AI, we remain at the forefront of the market with our innovative products and offerings. Our ChatBots are widely used by prominent clients such as Ganni, Feastables, and Ticketmaster.

We are seeking an experienced and skilled Fullstack Engineer to join our team. Job Description

As a Fullstack Engineer, you will be responsible for leading the design, development, and maintenance of our service platform built with Next.js and React. You will develop using the latest frameworks within Frontend development.

You will work closely with cross-functional teams to ensure the delivery of high-quality, scalable, and efficient software solutions that meet the needs of our customers. If you have a passion for fullstack development and enjoy leading and mentoring others, we would love to hear from you. Key Responsibilities

• Lead the design and development of frontend systems and applications, ensuring scalability, reliability, and performance.
• Collaborate with cross-functional teams to identify and prioritize project requirements and deliverables.
• Design and implement efficient and scalable frontend architectures, using state-of-the-art technologies.
• Develop and maintain high-quality, well-tested, and documented code.
• Mentor and guide junior engineers and developers to improve their skills and knowledge.
• Participate in code reviews and provide constructive feedback to improve code quality and maintainability.
• Troubleshoot and debug complex issues in the frontend systems and applications across frontend and backend systems.
• Work closely with the DevOps team to ensure smooth deployment and monitoring of frontend systems.
• Stay up-to-date with the latest technologies and trends in the industry, and apply this knowledge to improve our frontend systems and applications.
• Participate in planning and prioritization of project tasks and resources.
• Collaborate with QA engineers to ensure the quality and reliability of the frontend systems and applications.
• Participate in code refactoring and optimization to improve performance and scalability.
• Develop and maintain technical documentation and knowledge base articles.
• Participate in technical discussions and provide input on technical decisions.

You will be working in a Tech-stack built around Next.js 15 as a fullstack developer:

• Stylesystem: TailwindCSS, ShadCN
• Frontend: Typescript, Next.js (15), React (19) and React-flow (12)

Additionally, we are working closely with a large Python API and several standalone widgets.