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Software Developer (f/m/d) – NestJS and GraphQL/REST API Specialist // Freelance, remote

Software Developer (f/m/d) – NestJS and GraphQL/REST API Specialist // Freelance, remote

Closing on: Nov 30, 2023


With its locations in Málaga/Spain, Munich/Germany and Würzburg/Bavaria, QUANTUM offers highly specialized job opportunities for IT experts.

Our client is a German company for sustainable investment solutions with a tradition of over 5 years. They are now looking for a Freelance Software Developer – NestJS and GraphQL/REST API Specialist to join their team starting September 1 for one month, with an option to extend.


  • You will be tasked with designing, developing and maintaining efficient and reliable backend APIs using NestJS. The focus is on both GraphQL and REST architectures.
  • You’ll work closely with interdisciplinary teams, including front-end developers, product managers, and UX designers, to ensure seamless integration of APIs into applications.
  • You’ll optimize the performance and scalability of APIs to meet the needs of a rapidly growing user base.
  • You implement robust error handling and security measures to protect sensitive data and maintain data integrity.
  • You participate in code reviews to ensure code quality, maintainability, and adherence to best practices.
  • You’ll stay abreast of industry trends, emerging technologies, and advances in API development to continuously improve the company’s technical capabilities.

// THAT’S YOU //

  • You have a BSc/MSc degree in Computer Science, Engineering, or a related field (or equivalent work experience).
  • You bring at least 3 years of experience as a software developer, with a strong focus on API development.
  • You have at least 3 years of experience in NestJS and demonstrate the ability to design, develop and maintain complex backend systems.
  • You have extensive hands-on experience developing GraphQL and REST APIs using NestJS.
  • You have a solid understanding of software development principles, design patterns, and best practices.
  • You are familiar with database systems, including both SQL and NoSQL databases, and their integration with APIs.
  • You have strong problem solving skills and the ability to efficiently analyze and troubleshoot complex problems.
  • You bring excellent teamwork and communication skills to collaborate effectively in an interdisciplinary environment.
  • You have a trained eye for detail and a commitment to delivering high-quality, well-tested code.
  • You have experience with version control systems like Git and are proficient in using code sharing tools.
  • Speaking English (at least B2) is no problem for you. If you also speak German, that’s a plus.

// SKILLRADAR (Please complete this self-assessment and send it with your application) //

  • Study in IT environment | Yes, which one? / No |
  • Experience as software developer | XX years |
  • Experience with NestJS | XX years |
  • Experience in API development with GraphQL | XX years |
  • Experience with REST | XX years |
  • German language skills | XX level |
  • English skills | XX level |
  • Daily or hourly rate | €xx |
  • Workload | XXX% |
  • Earliest start date | DD.MM.2023 |

If you are interested, please send us your current resume, SkillRadar, and hourly or daily rate to: freelance@q-m.io.

QUANTUM is a staffing agency founded by freelancers from the digital product development industry. We bring the experience of many years in the roles of Product Owner, Chief Product Owner and Chief Product Officer as well as User Experience Designer and Scrum Coach. We know your challenges! We pass on this “360° view” to our customers and you and have the ambition to connect the best experts with the right companies. Become part of our community and ask us for a (free) membership in our Digital Excellence Club. We always post projects and specials for our members there!

Email: freelance@q-m.io.


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