---
title: 'Middle Backend Developer (Node.js) at MasterBorn'
canonical: 'https://feeny.ai/job/middle-backend-developer-node-js-masterborn-wroc-aw-s5pj5m0pkvv4'
type: 'job'
last_seen: '2026-09-22'
---

# Middle Backend Developer (Node.js) at MasterBorn

- **Company:** MasterBorn
- **Location:** Wrocław, Poland
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-09-18
- **Last confirmed live:** 2026-09-22
- **Apply:** https://jobs.lever.co/masterborn-2/7145dd89-1fd6-4300-896d-08b84340c56b

## 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 10.000 - 18.000 + VAT (B2B)

Offer:

- Required skills: 2+ years of commercial experience in Node.js, SQL and NoSQL DBs, knowledge of JS frameworks (e.g Express.js, NestJS), experience in TypeScript, SOLID and KISS, knowledge about design and architecture patterns, knows how and why Docker and GitHub Actions works, basic usage of AWS services, English B2, Polish C1
- Offer: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, flexible hours, full-time position, long-term contract, Scrum Teams
- Perks and Benefits: learning budget, budget for health insurance and sports, regular feedback, support, and real learning opportunities, access to internal Design Talks and Tech Talks, and more
- Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam, Claude Code

Your future tasks and duties:

- Writing readable, testable and easy-to-maintain JS/TS code with OOP flavor
- Taking ownership of backend features from understanding requirements through implementation, testing and deployment
- Writing documentation for delivered code and technical decisions
- Code review of other developers in the team, including constructive feedback and knowledge sharing
- Direct involvement with the design and modification of basic DB structures and API contracts
- Propose pragmatic improvements and proactive ideas/solutions to enhance the product and team’s work processes
- Share insights with the team to diagnose issues, communicate risks and focus on solutions
- Actively participate in project discussions, refinements and technical decision-making
- Listen to the client's needs and, after consulting the team, suggest practical solutions
- Support less experienced team members through code review, explanations and pair programming Use AI tools responsibly in daily work, verifying and adapting results to production standards

About you - Tech skills & Experience:

- 2+ years of commercial experience in Node.js
- Good experience with at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc) - you know most of its basic APIs/features, worked on at least 1-2 projects involving such technologies
- Strong proficiency in TypeScript. You have practical experience with static typing, advanced types, and configuring TS compilers, treating it as your primary language to build robust and type-safe backend applications
- Potentially worked with NoSQL databases and/or in-memory databases and utilized them as a data store
- Worked with SQL databases (integration-wise and as a basic design skill) with ORM or query builder tool (ie. Prisma, Knex)
- Understands how AI/LLMs work in practice (context, prompts, limitations) and has hands-on experience contributing to AI-powered backend features (e.g. integrating LLM APIs, basic RAG flows, or simple agent-style workflows)
- Integrates AI seamlessly into daily development workflow - uses it for prototyping, boilerplate, and tests, while always verifying and adapting output to production-quality standards

About you - Soft Skills:

- English level B2 to cooperate with American clients
- Polish level C1 to communicate easily within the team
- Open-minded to new challenges (e.g. different frameworks)
- Understand the significance of MVP and prioritize the pursuit of excellence and high-quality outcomes, even amid tight project timelines.
- Communicate with the team to efficiently translate business complexities (user stories/tasks) into solutions (results/estimations)
- Staying on top with trends/news, sharing them, teaching others and aiming for the best quality solutions
- Strong problem-solving abilities to diagnose issues, suggest solutions, and make decisions based on project requirements.

Nice to have:

- Worked in Agile/Scrum on a daily basis consisting of people with similar skills and monitoring code quality on a daily basis
- Basic experience with AWS - used some services in specific cases
- Basic experience with Docker - know how to prepare and debug the environment and connect things up to work locally
- Worked in the very beginning of the product development/creation stage
- Understand the significance of MVP and aim to deliver top-notch results, even amid tight project timelines

Recruitment Process:

- CV Review
- Phone call with our Recruiter (15min)
- Soft-skills interview with our Recruiter (1h)
- Technical interview with our Senior Specialists (2h)
- 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)

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