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Middle Backend Developer (Node.js) @ MasterBorn

Polska🌐 Remote💼 Full-time🗓 2026-06-09 → 2026-08-07

Core

Building backend services and AI-powered features for US clients in FinTech, SportsTech, and MedTech using Node.js and TypeScript.

Role type

Middle Backend Developer (Node.js)

Builds

Scalable backend APIs, AI-integrated workflows, and database structures for diverse client projects.

Domain

FinTech, SportsTech, MedTech

Deliverable

production ML models | product features

Required skills

Node.js, TypeScript, SQL/NoSQL databases, REST APIs, Docker, AWS basics, AI/LLM integration, OOP principles

Preferred skills

Express.js/NestJS, GitHub Actions, Agile/Scrum, mentoring, AI tool usage

Technologies

Node.js, TypeScript, Express.js, NestJS, Prisma, Knex, MongoDB, AWS, Docker, GitHub Actions, React

Responsibilities

Design and implement backend features and API contracts, integrate AI/LLM APIs and RAG flows, review code and support team members, optimize development workflows using AI tools, collaborate with clients to translate requirements into solutions.

Seniority

Middle, hands-on IC

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