Backend Developer (Node.js, NestJS) - Spain Based

As a Backend Developer at UNITH, your primary responsibilities will include designing and maintaining scalable backend services, collaborating with cross-functional teams to implement features, solving complex technical challenges, and engaging in system architecture decisions while conducting code reviews. Your role is integral to ensuring the performance and scalability of our groundbreaking conversational AI products.

To qualify for the Backend Developer role at UNITH, candidates should have a minimum of 3 years of hands-on experience with Node.js and NestJS, a proven track record in database management and optimization, and proficiency in Git workflows and CI/CD pipelines. Strong problem-solving abilities and effective communication skills are also essential for success in this position.

As a Backend Developer at UNITH, you will work with a sophisticated technology stack that includes AWS EC2 for cloud infrastructure, NestJS and FastAPI for frameworks, and programming languages such as Typescript, Javascript, and Python. Additionally, you will engage with various databases like Postgres and NoSQL, along with tools such as Docker for containerization and RabbitMQ for message brokering, depending on the project needs.

UNITH offers an attractive package for the Backend Developer role, including competitive compensation, flexible working options to work remotely or occasionally from our beautiful Barcelona office, private health insurance, and discounts on fitness subscriptions. Moreover, you'll be joining a global culture that values diverse perspectives and provides opportunities for professional growth and collaboration.

At UNITH, we are committed to fostering a diverse and inclusive workplace where all employees feel valued and empowered. We believe that diversity drives innovation, and our team's varied perspectives and experiences are integral to our mission of transforming customer interactions. We actively promote an inclusive environment that encourages collaboration and respect for each individual's unique background.

When discussing your experience with NestJS during an interview, highlight specific projects where you implemented this framework, detailing the functionalities you developed and the challenges you faced. Emphasize your understanding of its architecture and why you chose it for those projects, showcasing your capacity for making strategic technical decisions.

A good answer should focus on design principles you apply, such as microservices architecture, load balancing, and database optimization techniques. Mention specific tools or methods you use to monitor performance, as well as your experience with cloud services that support scaling, like AWS, to back your claims with real-world applications.

In your response, emphasize the importance of constructive feedback. Describe your approach to code reviews, including what aspects of the code you focus on—such as adherence to best practices, readability, performance, and potential bugs. Illustrate how you foster a positive, collaborative environment throughout the code review process.

Choose a relevant challenge that highlights your problem-solving skills. Explain the issue, the steps you took to diagnose it, and the ultimate solution you implemented. Discuss what you learned from the experience and how it improved your approach to similar situations in the future.

Talk about the resources you use to keep informed, such as technology blogs, online courses, developer forums, and open-source contributions. Mention specific communities or events that contribute to your continuous learning and how you apply that knowledge to your work as a Backend Developer at UNITH.

Emphasize the value of collaboration in software development. Discuss how you communicate with team members, share knowledge, and leverage combined expertise to enhance the overall product. Provide examples where teamwork led to successful project outcomes and how you encourage a cooperative atmosphere.

Detail your hands-on experience with CI/CD tools and pipelines, explaining how you have integrated automated testing and deployment processes into your workflow. Discuss specific optimizations you've made to improve efficiency, reduce deployment times, and ensure quality throughout the development cycle.

In your answer, focus on a specific project where you've employed an API-driven architecture. Discuss the design choices you made, the technologies used, and how this architecture benefited the application’s scalability and maintenance. Highlight how you managed API versioning and documentation.

Describe your systematic approach to database design, mentioning factors like normalization, indexing, and optimization techniques. Discuss specific databases you’ve worked with, the challenges faced during management, and how you ensured data integrity and performance over time.

Make this personal by connecting your interests and values with UNITH's mission in conversational AI. Discuss how you admire fostering creativity and teamwork, and express your enthusiasm for participating in innovative projects that have a significant business impact within a global culture.