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React and Next.js Expert

1 week ago

Copenhagen, Copenhagen, Denmark Certainly Full time
About Us

Certainly is a trailblazing Conversational AI Platform revolutionizing ecommerce and customer service. Our platform empowers businesses to create bespoke AI conversational chatbots for seamless customer interactions across multiple domains and languages.

We are a team of around 20 experienced professionals working in a hybrid setup, with management based in Copenhagen and product development spanning across Europe. With a strong focus on Conversational AI, we strive to stay ahead of the curve, delivering innovative products and services that meet the needs of prominent clients like Ganni, Feastables, and Ticketmaster.

We are seeking a seasoned Fullstack Engineer to contribute to our team's success.

As a Fullstack Engineer, you will lead the design, development, and maintenance of our service platform built with Next.js and React. You will drive innovation in frontend development, leveraging the latest frameworks and technologies.

You will collaborate closely with cross-functional teams to deliver high-quality software solutions that meet the evolving needs of our customers. If you have a passion for fullstack development and enjoy guiding others, we would welcome your application.

Key Responsibilities
  • Lead the design and development of frontend systems and applications, focusing on scalability, reliability, and performance.
  • Collaborate with cross-functional teams to identify project requirements and deliverables.
  • Design and implement efficient frontend architectures using cutting-edge technologies.
  • Develop and maintain high-quality, well-documented code.
  • Mentor junior engineers and developers to enhance their skills and knowledge.
  • Contribute to code reviews and provide feedback to improve code quality and maintainability.
  • Troubleshoot complex issues in frontend systems and applications across frontend and backend systems.
  • Collaborate with the DevOps team to ensure smooth deployment and monitoring of frontend systems.
  • Stay updated with the latest technologies and trends in the industry, applying this knowledge to enhance our frontend systems and applications.
  • Participate in project planning and task prioritization.
  • Collaborate with QA engineers to ensure frontend system quality and reliability.
  • Contribute to 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.

Our tech-stack is built around Next.js 15 as a fullstack developer:

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

We also work closely with a large Python API and several standalone widgets.

Requirements

We seek a professional with experience and expertise in most of the following areas:

Web Technologies:

  • Sound understanding of Typescript, React, Next.js (preferably 13.0 or newer).
  • Strong proficiency in React, including hooks, context API, and component lifecycle.
  • Familiarity with the React flow library.
  • Comprehensive understanding of REST APIs and asynchronous request handling.
  • Familiarity with server-side rendering (SSR), Server-components, and client-side rendering.
  • Familiarity with Micro-services and microservice architecture.
  • Expertise in fullstack architecture and data structure for high-performance user and data-driven platforms.

Version Control:

  • Proficiency in using version control systems, specifically Git, including branching strategies and collaborative workflows.

DevOps and CI/CD:

  • Familiarity with containerization technologies like Docker and orchestration tools like Kubernetes.
  • Experience with continuous integration and deployment pipelines using tools like Jenkins, GitLab CI, or GitHub Actions.
  • Experience with cloud service providers such as AWS, Google Cloud Platform, or Azure, particularly with services relevant to web application deployment and scaling.
What We Offer
  • Competitive compensation and benefits package.
  • Opportunity to work on engaging and challenging projects.
  • Dynamic and collaborative work environment.
  • Professional development and growth opportunities.
  • Flexible working hours and remote work options.
  • Access to the latest technologies and tools.
  • Recognition and rewards for outstanding performance.