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Middle Frontend Developer

3 hours ago
Poland
Full-time
Junior
Frontend Engineer / Web Developer
Software Development
Agile CI/CD CSS Docker Git GitHub HTML HTTP JavaScript JIRA Node.js React REST API Scrum TypeScript
Apply Now
MasterBorn Group

MasterBorn Group

MasterBorn Group: World-class experts building secure, cost-effective software for American startups with a focus on modern web apps.

Internet Software & Services
51-250
Founded 2016
View All Jobs 10

Description

  • Develop and maintain applications, owning features from requirements through implementation, deployment, and verification.
  • Build responsive and accessible interfaces with strong attention to design, performance, and user experience.
  • Implement straightforward backend changes involving APIs, business logic, validation, and data handling.
  • Diagnose issues across frontend, backend, and data boundaries using logs and error monitoring.
  • Use AI coding assistants to explore solutions, implement features, review generated code, and validate results.
  • Write clean, maintainable code and implement appropriate tests for application behavior and key user flows.
  • Collaborate with designers, developers, QA, product owners, and clients to propose practical solutions.
  • Participate in code reviews, document technical decisions, and share knowledge with the team.

Requirements

  • At least 2 years of commercial experience building and maintaining web applications.
  • Strong JavaScript and TypeScript fundamentals, plus practical knowledge of HTML, CSS, and browser behavior.
  • Experience with a modern frontend framework, user interactions, forms, API integration, maintainable components, and application state.
  • Understanding of HTTP, client-server communication, authentication, error handling, accessibility, and performance.
  • Ability to test, debug, and investigate unfamiliar code while understanding why solutions work.
  • Ability to implement straightforward backend changes within an existing application.
  • Practical experience using AI coding assistants and validating their output through review and testing.
  • Familiarity with Git, build tooling, container-based development, CI/CD workflows, and automated checks.
  • English at B2 or above and Polish at C1 for international collaboration and daily team communication.
  • Preferred: backend, database optimization, cloud, infrastructure automation, mobile, Agile/Scrum, open-source, MVP, or AI-agent workflow experience.

Benefits

  • PLN 9,000–15,000 + VAT per month on a B2B contract.
  • 100% remote, hybrid, or onsite work options with flexible hours in the Polish time zone.
  • Full-time, long-term contract with no-service days.
  • PLN 3,000 annual training budget.
  • Multisport, Luxmed, and Cafeteria Platform benefits.
  • Tech talks, learning sessions, and other professional development opportunities.
  • Apple MacBook Pro and access to Slack, Google Workspace, GitHub, Jira, Coda, FigJam, and AI tools.

Interested in this position?

Apply directly on the company website

Apply Now

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