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Senior Backend Developer (Node.js)



We are currently developing a team of world-class Backend Developers obsessed with Node.js.

Your challenge will be to build a modern, scalable web application using Node.js frameworks (sometimes with TypeScript flavour!) and (No)SQL technologies mostly on AWS Cloud.

You will work (in the Polish time zone!) for one of our US-based clients: Payments.ai, TrueWill, or Tentacle.
We're a team of top performers. 100% of our clients and referrals are from the high-end American IT market.

    • Required skills: at least 4 years of commercial experience in Node.js, experience in SQL and NoSQL DBs, a vast knowledge of at least one JS framework (Express.js preferred), SOLID and KISS in your veins, solid knowledge about design and architecture patterns, knowledge about basic AWS services, basic dev-ops skills (Docker, GitHub Actions), a very good command of written and spoken English (CEFR B2+)
    • Nice to have: knowledge of Scrum and Agile methodologies, open-source contributions, Serverless experience, experience in TypeScript and various BE frameworks
    • Perks and Benefits: +6 000 PLN / year training budget, + 1500 PLN / quarter for health insurance and sports, Mentoring Program, work on site, hybrid or fully remote
    • B2B/UZL: + paid days off

About the role - Technical:

  • Writing readable and easy to maintain JS code with OOP flavor
  • Have technical involvement in the product - finding ways to improve it
  • Being partially responsible and involved in design and modification of the DB structures
  • Writing documentation for delivered code

Tools you’ll use:

  • Slack, GSuite
  • GitHub
  • Jira, Confluence, Miro
  • Apple MacBook Pro

About the role - Non-Technical:

  • Improve and reuse the company’s knowledge base
  • Communicate with the team to efficiently translate business complexities (user stories/tasks) into solutions (results/estimations)
  • Being a natural leader in terms of Backend - staying on top with trends/news, sharing them, teaching others and aiming for best quality solutions
  • Being part in our Phase0 (Discover - Define - Design process for startups and MVPs)

We'll be happy to see that you:

  • Know JS - been there, done that - understands most of the concepts, knows how and why JS works as it does, is able to pass this knowledge to others easily
  • Have a deep knowledge of at least one Node.js backend framework (Express.js - prefered) - knows APIs/functions/features, thoroughly used them in abstract constructions/utilized keeping good practices, was working on at least 2 projects involving such technologies, have commercial experience in it
  • Have knowledge and experience in utilising OOP, keeping good practices, data structures, SOLID, DRY and design patterns
  • Have worked with SQL databases (integration and design-wise) utilising ORM or query builder tool (ie. Sequalize, Knex)
  • Potentially worked with NoSQL databases and/or in-memory databases and utilized them as a data store
  • Worked within AWS stack - used S3, Cognito, SNS, SQS, others
  • Have basic experience in Serverless - was running some applications in "the Serverless way"
  • Have usage experience with Docker - knows how to prepare and debug the environment and connect things up to work locally
  • Open-minded to new challenges (TypeScript, frameworks other than Express, etc)
  • Minimum B2 English - documentation/tasks/other reading/writing
  • Know why MVP is important and regardless of quick delivery times, wants to do a good job at a high quality level
Senior Backend Developer (Node.js)



Meaningful projects, top-notch experts and value-driven workplace

Sound good?
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What's coming up next?


Step 1

Phone Screening
5-minutes organizational call

Step 2

Soft-skills interview with HR and polish-based COO
We will talk about MasterBorn, our Team, your experience and history :)

Step 3

Recruitment task (optional)
Complete a task so you can see a part of our work - live coding

Step 4

Technical interview with Senior Specialist
A technical conversation to get to know your skills better and learn about the scope of duties

Step 5

Feedback and quick decision
Decision and our feedback

Our offices are waiting for you in:

Wrocław, PL (HQ)

ul. Krupnicza 13, 50-075 Wrocław

Szczecin, PL

ul. Wielka Odrzańska 26, 70-535 Szczecin

Kielce, PL

ul. Gabrieli Zapolskiej 45B, 25-435 Kielce

Austin, U.S.

Austin, TX United States

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The Administrator of your data is MasterBorn, with its registered office in Wroclaw, Krupnicza 13. If you want to withdraw, get an insight or update information about you, then contact us: contact@masterborn.com