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Middle Backend Developer (Node.js)

3 weeks, 1 day ago
Poland
Full-time
Junior
Backend Engineer
Software Development
Agile AWS Docker Express.js Fastify Git GitHub Actions JavaScript JIRA Knex NestJS Node.js Prisma React Scrum Solid.js SQL TypeScript
Apply Now
MasterBorn Group

MasterBorn Group

MasterBorn Group: World-class experts building secure, cost-effective software for American startups with a focus on modern web apps.

Internet Software & Services
51-250
Founded 2016
View All Jobs 10

Description

  • Write readable, testable, and maintainable JavaScript/TypeScript backend code.
  • Own backend features from requirements through implementation, testing, and deployment.
  • Design and modify database structures and API contracts.
  • Document delivered code and technical decisions.
  • Review code, provide constructive feedback, and support knowledge sharing.
  • Propose improvements to products, development practices, and team processes.
  • Participate in project discussions, refinements, and technical decision-making.
  • Communicate risks, diagnose issues, and recommend practical solutions to clients and the team.
  • Support less experienced developers through explanations and pair programming.
  • Use AI tools responsibly for prototyping, boilerplate, and testing while validating production quality.

Requirements

  • 2+ years of commercial Node.js experience.
  • Strong TypeScript proficiency, including static typing, advanced types, and TypeScript compiler configuration.
  • Experience with a Node.js backend framework such as Express.js, NestJS, or Fastify.
  • Experience with SQL databases, including basic database design and ORM/query-builder tools such as Prisma or Knex.
  • Experience with NoSQL and/or in-memory databases.
  • Knowledge of SOLID, KISS, design patterns, and software architecture principles.
  • Understanding of Docker and GitHub Actions; basic AWS experience.
  • Hands-on experience with AI-powered backend features, such as LLM API integrations, basic RAG, or agent-style workflows.
  • English at B2 level and Polish at C1 level.
  • Experience with Agile/Scrum, MVP development, or early-stage product creation is preferred.

Benefits

  • PLN 10,000–18,000 + VAT on a B2B contract.
  • 100% remote work, with hybrid or onsite options available.
  • Flexible hours aligned with the Polish time zone.
  • Paid days off and a long-term, full-time contract.
  • Learning budget plus health insurance and sports budgets.
  • Regular feedback, mentoring, and access to internal Design Talks and Tech Talks.
  • Work equipment including an Apple MacBook Pro and access to development tools.

Interested in this position?

Apply directly on the company website

Apply Now

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