Fullstack Developer Expert

2 days ago


Copenhagen, Copenhagen, Denmark Certainly Full time

Certainly is a Conversational AI Platform designed for ecommerce and customer service. Our platform builds tailored AI conversational chatbots for global complex customer journeys, meeting multi-domain and multilingual demands.

We are a hybrid team of around 20 faces, with management in Copenhagen and product development across Europe. With years of experience in Conversational AI, we aim to be at the forefront of the market with our product offerings. Our ChatBots are used by clients like Ganni, Feastables, and Ticketmaster.

As a seasoned Fullstack Engineer, you will lead 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 collaborate closely with cross-functional teams to deliver high-quality, scalable, and efficient software solutions that meet our customers' needs. 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, applying 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.


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