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Back-end Developer (TypeScript / NodeJS)
  • Łódź
Back-end Developer (TypeScript / NodeJS)
Łódź, Łódź, Łódź Voivodeship, Polska
Ragnarson sp. z o. o.
6. 7. 2025
Informacje o stanowisku

technologies-expected :


  • Node.js
  • TypeScript
  • ExpressJS
  • Sequelize
  • Docker
  • Kubernetes
  • GitLab
  • PostgreSQL
  • Firebase-Admin

technologies-optional :


  • TypeGraphQL
  • Axios
  • React.js
  • React Native

about-project :


  • Wondering what would make you a better developer at this stage of your career?
  • By working with dozens of different developers, we concluded that in many cases, it’s not only about your technical skills.
  • It might be about your soft skills and looking at problems with the big picture in mind. Many companies and environments support the development of technical skills. There are only a handful, including Ragnarson, that focus on shaping developers as well-rounded professionals.

responsibilities :


  • Solving real-life problems with technology
  • Building applications and planning them accordingly to business requirements
  • Helping mature applications, improving them, and responding to scale-related problems
  • Building & maintaining a friendly relationship with our clients
  • Direct collaboration with founders, product owners and their technical leader
  • Product-Oriented Experience: We’re looking for a proactive individual with a keen understanding of business needs and user expectations. You should be able to analyse and interpret these requirements effectively, showcasing: initiative in solving problems and implementing product improvements, the ability to propose well-thought-out solutions that bring value to the product

requirements-expected :


  • At least 4+ years of commercial experience as a Backend JavaScript Developer (Node.js)
  • Strong proficiency in Node.js and TypeScript
  • Solid experience working with GraphQL APIs and related libraries (e.g., TypeGraphQL, Axios)
  • Hands-on experience with ExpressJS and Sequelize
  • Experience with Docker, Kubernetes, and GitLab-CI in a CI/CD environment
  • Practical knowledge of PostgreSQL and Firebase-Admin
  • Good understanding of software development principles, design patterns, and clean code practices
  • Fluent communication in English (written and spoken) at B2/C1 level, comfortable working with international clients

offered :


  • 100% remote work
  • Open company financial records (for example, income, expenses, forecast)
  • Transparent communication and company documents
  • Opportunity to develop in non-programming fields (project management, customer relations, recruitment, marketing, sales)
  • Various benefits (MacBook Pro, co-funding of the healthcare package, sports activities, etc.)

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