Full-Stack JavaScript Developer (AI-Native)

UltaHost; Kraków; Remote; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Remote-first work culture

International team

Career growth opportunities

AI-native development workflows

Job summary

UltaHost is looking for a highly skilled Full-Stack JavaScript Developer (AI-Native) to join our Engineering team. This role is ideal for an experienced software engineer who enjoys building modern web applications across the entire technology stack while leveraging AI-assisted development workflows to deliver high-quality software efficiently.

You will be responsible for designing, developing, and maintaining scalable backend services and modern frontend applications using JavaScript and

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, IT, or equivalent experience.
• 4+ years of professional Full-Stack JavaScript development experience.
• Strong expertise in JavaScript and TypeScript.
• Production experience with Node.js and NestJS.
• Experience with React and Next.js.
• Hands-on experience with Prisma ORM, PostgreSQL/MySQL, MongoDB/Redis.
• Experience with Git, Docker, and CI/CD pipelines.
• Experience writing unit and integration tests with Jest/Vitest.
• Daily use of AI coding tools such as Claude Code, Cursor, GitHub Copilot, Codex CLI.
• Strong understanding of architecture, security, and modern engineering practices.
• Excellent written and verbal English.

Responsibilities

• Design, develop, and maintain scalable full-stack applications using Node.js, NestJS, React, Next.js, and TypeScript.
• Build secure REST APIs, authentication systems, and backend services.
• Design and maintain database schemas using Prisma ORM with PostgreSQL, MySQL, MongoDB/Redis.
• Collaborate closely with Product, Design, QA, and Engineering teams throughout the software development lifecycle.
• Contribute to CI/CD pipelines, Docker-based development environments, and deployment processes.

Skills

JavaScript

TypeScript

Node.js

NestJS

React

Next.js

Prisma ORM

PostgreSQL

MySQL

MongoDB

Redis

Git

Docker

CI/CD

Jest

Vitest

AI tools

English

Software architecture

Education

Bachelor's degree in CS/SE/IT

Tools

Prisma ORM

PostgreSQL

MySQL

MongoDB

Redis

Git

Docker

Job description

About UltaHost

UltaHost is a rapidly growing global web hosting and cloud infrastructure provider delivering high-performance hosting, VPS, dedicated servers, and cloud solutions to customers worldwide. Our mission is to provide reliable, scalable, and innovative infrastructure services while maintaining exceptional customer satisfaction. As our global operations continue to expand, we are looking for talented professionals to join our international team and contribute to our long-term growth.

Job Overview

UltaHost is looking for a highly skilled Full-Stack JavaScript Developer (AI-Native) to join our Engineering team. This role is ideal for an experienced software engineer who enjoys building modern web applications across the entire technology stack while leveraging AI-assisted development workflows to deliver high-quality software efficiently. You will be responsible for designing, developing, and maintaining scalable backend services and modern frontend applications using JavaScript and TypeScript technologies. Working closely with product managers, designers, and fellow engineers, you will take ownership of features from specification through production while maintaining high standards for code quality, security, and performance.

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications using Node.js, NestJS, React, Next.js, and TypeScript
• Build secure and maintainable REST APIs, authentication systems, and backend services
• Design and maintain database schemas using Prisma ORM with PostgreSQL,
• MySQL, MongoDB, and Redis where appropriate
• Use AI coding tools such as Claude Code, Cursor, GitHub Copilot, or similar as part of your daily development workflow
• Collaborate closely with Product, Design, QA, and Engineering teams throughout the software development lifecycle
• Contribute to CI/CD pipelines, Docker-based development environments, and deployment processes

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field (or equivalent professional experience)
• 4+ years of professional Full-Stack JavaScript development experience
• Strong expertise in JavaScript and TypeScript
• Production experience with Node.js and NestJS
• Strong experience with React and Next.js
• Hands‑on experience with Prisma ORM, PostgresSQL/MySQL, MongoDB/Redis
• Experience with Git, Docker, and CI/CD pipelines
• Experience writing unit and integration tests using Jest, Vitest, Supertest, or similar frameworks
• Daily experience using AI coding tools such as Claude Code, Cursor, GitHub Copilot, Codex CLI, or similar
• Strong understanding of software architecture, scalability, security, and modern engineering best practices
• Excellent written and verbal communication skills in English

Preferred Qualifications

• Experience building AI-powered applications using LLM APIs
• Familiarity with Model Context Protocol (MCP), AI agent frameworks, or AI automation
• Experience working on SaaS, hosting, cloud, or infrastructure platforms
• Experience with GitHub Actions or similar CI/CD platforms
• Experience optimizing application performance and large-scale systems
• Passion for AI-assisted software engineering and continuous improvement

What We Offer

• Opportunity to work in a fast‑growing international technology company
• Professional and collaborative engineering environment
• Remote‑first work culture
• Career growth and professional development opportunities
• Opportunity to work with modern AI-native development workflows
• Exposure to large-scale cloud infrastructure and global software products
• Dynamic and innovation-driven company culture