Backend Developer



Software Engineering
Barcelona, Spain
Posted on Thursday, January 13, 2022
Who we are
Aizon is an AI software provider that transforms manufacturing operations using advanced analytics, artificial intelligence, and other smart factory technologies. Our mission is to improve global health in order to change patients’ lives. We aim to do that by optimizing the way medicines are manufactured so that pharma and biotech companies can provide patients worldwide with the right medicine at the right time and at the right price. We are based in thriving San Francisco and sunny Barcelona, with customers and partners spanning the globe.
We are looking for new team members who share our values: trust, customer-centricity, innovation, integrity, collaboration, and passion.
We are embarking on an important journey, working to contribute to something impactful and new in the Life Sciences industry!
The Position
- Managing existing and implementing new functionalities based on the most modern technologies required for multi-instance SaaS and PaaS implementations
- Working with team members to troubleshoot and improve current back-end applications and processes
- Using his or her understanding of programming languages and tools in order to analyze current trends and industry developments, formulating more efficient processes, solving problems, and creating a better experience for our users
- Reporting to the Backend Developer Team Lead


  • Implementing server side code (AWS Lambdas,…)
  • Assume technical ownership of various services and components of the SaaS and PaaS implementations
  • Implementing unit tests for delivered features
  • Managing documentation for the assigned tasks
  • The job follows a quality system based on efficiency and continuous learning
  • The development has to be oriented towards serverless architecture
  • Cooperate with other team members (developers, architect, testers, product management)

Knowledge & Experience

  • Must-have
  • Bachelor or Master’s degree in Computer Science or equivalent knowledge and experience
  • Experience at least 3 years architecting and maintaining large scale web applications (creating REST structures in the Backend, escalating a massive access platform, etc)
  • Understand the importance of testing your code and how it reduces the risk of making changes and refactoring
  • Basic knowledge of Unix/Linux systems, utilities, and scripting
  • Good level and recent experience of NodeJS + ExpressJS
  • Fluency in unit testing (e.g. Jest/Jasmine/Mocha)
  • Good knowledge of GIT
  • Nice-have
  • Desirable knowledge and experience of Indexing and experience managing Big Data, AWS Lambda development and with Serverless Architecture


  • Proficient in spoken and written English
  • Capable of working with a dynamic product that is ever-changing and evolving rapidly
  • Strong analytical and creative problem-solving skills
  • Ability to take smart risks and champion new ideas
  • Team player, collaborative, innovative, get things done mind
  • Ability to understand business requirements and translate them into technical requirements
  • Show initiative in setting and meeting goals within an environment of managed change
  • Ability to work under pressure, responsible for multiple important tasks in parallel
  • Commitment to quality

What we can offer?

  • Full time and permanent contract and immediate start
  • Competitive salary in the sector
  • An open and collaborative work environment with a young and dynamic team and international culture
  • An opportunity for personal and professional growth, supported by high functioning, stellar investors and the exciting challenges that come with joining a company at the start of its growth trajectory
  • A culture where your opinion is highly valued and appreciated
  • Flexible schedule, intensive Fridays
  • Flexible remuneration transport and restaurant
  • Language training courses
  • Private medical and dental insurance
  • Stock options
  • Internal training and certifications plan
  • Career plan and scheduled salary reviews
  • Team Building Activities
  • The possibility to join a young American company with great expectations and huge potential to grow
We are committed to providing an inclusive environment where all employees feel mutual respect and are contributing to the good of society. We are a group of creators with diverse backgrounds (over 23 different citizenships in our company) and are proud to be an equal opportunity workplace. All employment is decided based on qualifications, merit, and business needs. If you need assistance or accommodation due to a disability, you may contact us at