---
title: 'Junior Backend Developer (Node.js) at MasterBorn'
canonical: 'https://feeny.ai/job/junior-backend-developer-node-js-masterborn-wroc-aw-dp54mvv5a4jg'
type: 'job'
last_seen: '2026-11-10'
---

# Junior Backend Developer (Node.js) at MasterBorn

- **Company:** MasterBorn
- **Location:** Wrocław, Poland
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-11-05
- **Last confirmed live:** 2026-11-10
- **Apply:** https://jobs.lever.co/masterborn-2/449dab93-d089-4094-ab7e-1cea3e2ad4d1

## Job description

We are looking for a skillful Backend Developer to join one of our teams working with US clients - referrals from the high-end American IT market.

Our tech stack is built around React, Node.js and TypeScript. We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions.

Enjoy the flexibility of working within the Polish time zone and collaborate with clients from diverse industries such as FinTech, SportsTech, MedTech, and many others.

Salary: PLN 6.000 - 10.000 + VAT (B2B); PLN 6.000 - 8.300 brutto (UZL)

Contract summary:

- Rate: PLN 6.000 - 10.000 + VAT (B2B); PLN 6.000 - 8.300 brutto (UZL)
- Contract: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, Europe-based, flexible hours, full-time position, long-term contract, Scrum Teams and more
- Perks and Benefits: 3,000 PLN annual training budget, Multisport, Luxmed, Cafeteria Platform, Tech-talks, Learning sessions, and more
- Tools you’ll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam, Claude Code

Your future tasks:

- Writing personal-best possible JS/TS code with OOP flavour
- Technical involvement in the product - finding ways to improve it
- Writing documentation for delivered code
- Peer code review
- Reuse and improve the company knowledge base
- Communicate with the team to efficiently translate business complexity (user stories/tasks) into solutions (end results/estimations)
- Learning, learning and learning ;)

About you - Tech skills & Experience:

- At least 6-12 months of commercial experience with [Node.js](http://Node.js)
- Understand basic JS concepts (ES 2018+), use Classes, and follow recent additions/functionalities
- Basic experience with at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc) - know basic APIs/features, worked on at least 1 project involving such technologies, would be great to have commercial experience in it
- Know what OOP is, understand basic good practices and data structures, want to have a SOLID and DRY code with the use of design patterns
- Have worked with SQL database (integration wise) with ORM or query builder tool (ie. Prisma, Knex)
- Know how to use AI, but understands the consequences of its use and can independently write code without its support

About you - Soft Skills:

- English level B2/C1 to cooperate with American clients
- Polish level C1 to communicate easily within the team
- Knowledge-hungry, positive attitude
- Effective communication - crucial for seeking feedback and understanding others' perspectives
- Open-minded to new ideas, perspectives, and feedback from experienced colleagues
- Being open to change and adapting to different situations
- Being aware of your strengths, weaknesses, and areas for improvements
- Enthusiastic for learning and taking on challenges
- Actively seeking solutions and trying to figure things out on your own, but not being afraid to ask for help when needed

Nice to have:

- Open-source contributions
- Experience in TypeScript and various BE frameworks
- Understand what Agile/Scrum is and want to work as a team towards one goal
- Understand the significance of MVP and aim to deliver top-notch results, even amid tight project timelines
- Know what AWS is and gets why is it used
- Serverless experience
- Know how to run Docker images and how to use them

Recruitment Process:

- CV Review
- Phone call with our Recruiter (15min)
- Technical task (3h)
- Soft-skills interview with our Recruiter (30min)
- Technical interview with our Specialist (1,5h)
- Decision and feedback 🥳

Recruitment Process: CV Review Phone call with our Recruiter (15min) Technical task (3h) Soft-skills interview with our Recruiter (1h) Technical interview with our Specialist (1,5h) Decision and feedback 🥳

Meaningful projects, top-notch experts and value-driven workplace Sound good? Apply now!

## About MasterBorn

## Company Overview
- **One-liner**: MasterBorn is a custom software development company that builds AI-powered products for U.S.-based startups and enterprises, delivering full-stack solutions from MVPs to complex applications.
- **Entity Type**: Private (Privately Held)
- **Headquarters**: Nashville, Tennessee, United States (with offices in Poland)
- **Founded**: 2016
- **Founders**: Gray Skinner (CEO), Stanisław Kwiatkowski (COO), Przemysław Królik (CTO)

## Core Business
- **Primary industry/industries**: Software Development, AI Product Development, Custom Software Engineering
- **Target customers**: B2B – U.S.-based startups, mid-size companies, and enterprise clients; focus on FinTech, SportsTech, MedTech, InfoSec, and other verticals.
- **Mission or purpose statement**: “Your vision—delivered faster, smarter, with expert support every step of the way. Because great products are born here.” [masterborn.com](https://www.masterborn.com/)

## Products & Services
- **AI Product Development**: Building intelligent solutions using AI as a core component, not just a buzzword.
- **Software Development**: Full-stack custom software engineering for web, mobile, and backend.
- **UX/UI Design**: Product design and user experience strategies.
- **DevOps**: Infrastructure, CI/CD, and deployment automation.
- **Product Management**: Strategic product ownership and roadmap execution.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company, no disclosed funding rounds).
- **Key Metric**: 100+ products shipped; 91 employees (as of latest data, -10.7% YoY headcount decline). [linkedin.com](https://linkedin.com/company/masterborn)
- **Notable Investors/Partners**: No external investors disclosed. Client portfolio includes “unicorns” and U.S.‑based companies (e.g., PaymentsAI – increased conversion by 12%).
- **Growth Signals**: Active hiring (6 open positions including Senior Backend, Solutions Architect, and Junior roles); emphasis on expanding AI offerings; 100% Polish working hours for collaboration with American clients.

## Competitive Advantages
- **Full, in-house Scrum teams** (5–10 people per team) – no outsourcing, clear communication.
- **Founder-led leadership** with deep experience in scaling technology and product operations (CEO Gray Skinner served 1,000+ enterprise clients, including 200 from Forbes 2000).
- **Focus on “post-hype” AI** – delivering practical, value-driven AI solutions rather than trend-chasing.
- **Stable, scalable delivery** with a track record of long-term client relationships.

## Strategic Focus
- Scaling AI-powered product development and product-led operations.
- Growing U.S. client base while maintaining Polish time‑zone efficiency.
- Continuing to invest in internal learning, mentoring, and community events (TechTalks, hackathons).

## Why Work Here
- **Culture & Learning**: Yearly learning allowance, 8 hours of monthly learning time, 1:1 mentoring sessions, internal TechTalks and hackathons.
- **Work Model**: Flexible remote/hybrid options; 100% Polish working hours (no late nights despite U.S. clients); B2B or mandate contract.
- **Perks**: Health and sports refunds, top‑quality equipment, fully planned onboarding, long‑term cooperation focus.
- **Team**: Cross‑functional teams with specialists, heads, and interns; strong community of like‑minded professionals.

## Sources
1. [masterborn.com](https://www.masterborn.com/)
2. [masterborn.com/about](https://www.masterborn.com/about)
3. [linkedin.com/company/masterborn](https://linkedin.com/company/masterborn)
4. [jobs.lever.co/masterborn-2](https://jobs.lever.co/masterborn-2)

## Other roles at MasterBorn

- [Talent Acquisition Specialist](https://feeny.ai/job/talent-acquisition-specialist-masterborn-wroc-aw-hacvgckd7rqt) — Wrocław, Poland
- [Junior Backend Developer (Python)](https://feeny.ai/job/junior-backend-developer-python-masterborn-wroc-aw-mvppjw23abf8) — Wrocław, Poland
- [Junior QA Specialist](https://feeny.ai/job/junior-qa-specialist-masterborn-wroc-aw-2cx2wkqxab2n) — Wrocław, Poland
- [Intern Integration Consultant](https://feeny.ai/job/intern-integration-consultant-masterborn-wroc-aw-pt0bw0gj1fgh) — Wrocław, Poland
- [Middle Backend Developer (Node.js)](https://feeny.ai/job/middle-backend-developer-node-js-masterborn-wroc-aw-s5pj5m0pkvv4) — Wrocław, Poland
- [Junior Product Owner](https://feeny.ai/job/junior-product-owner-masterborn-wroc-aw-4my6v48hq9em) — Wrocław, Poland
- [Junior Frontend Developer](https://feeny.ai/job/junior-frontend-developer-masterborn-wroc-aw-xkj7gjgsh8z0) — Wrocław, Poland
- [Junior Product Designer](https://feeny.ai/job/junior-product-designer-masterborn-wroc-aw-756pnw9ed7c9) — Wrocław, Poland
- [Intern Product Designer (AI Prototyping)](https://feeny.ai/job/intern-product-designer-ai-prototyping-masterborn-wroc-aw-jy2kkrpqz79r) — Wrocław, Poland
- [Middle Product Owner](https://feeny.ai/job/middle-product-owner-masterborn-wroc-aw-3f3ef3vepwp4) — Wrocław, Poland