Senior Frontend Developer

TL;DR

Senior Frontend Developer (React/TypeScript): Design, develop, and maintain scalable web applications with an accent on modern frontend architecture, performance optimization, and REST API integration in a microservices environment. Focus on mentoring engineers, influencing technical decisions, and delivering high-quality user interfaces through clean code and engineering best practices.

Location: Hybrid from Gdańsk / Warsaw / Kraków (2 days per week from the office)

Salary: 1200 - 1300 PLN/MD (B2B)

Company

hirify.global provides IT staffing and development projects, partnering with clients to deliver specialized technology solutions.

What you will do

• Design, develop, and maintain frontend applications using React and TypeScript.
• Build scalable, maintainable, high-performance user interfaces.
• Collaborate with backend engineers on microservices-based architectures and participate in technical design discussions.
• Mentor less experienced engineers via code reviews, pair programming, and technical guidance.
• Troubleshoot and optimize application performance; promote clean code and engineering best practices.
• Work closely with Product Owners and UX Designers to deliver high-quality solutions.

Requirements

• 5+ years of commercial frontend development experience.
• Strong expertise in React and TypeScript.
• Experience integrating frontend applications with microservice-based backend architectures.
• Strong understanding of modern frontend architecture and design patterns.
• Experience with REST APIs and asynchronous communication.
• Fluent English and experience mentoring/coaching junior developers.

Nice to have

• Experience with edge computing or edge-based applications.
• Experience with cloud-native applications.
• Familiarity with CI/CD pipelines and modern DevOps practices.
• Experience with frontend monitoring and performance optimization tools.
• Knowledge of containerized environments (Docker, Kubernetes).

Culture & Benefits

• Hybrid work model with 2 office days per week from Gdańsk, Warsaw, or Kraków.
• Senior role combining hands-on development with mentoring and technical guidance.
• Collaborative environment with Product Owners, UX Designers, backend engineers, and experienced developers.
• Opportunity to influence technical decisions and shape engineering best practices.
• Work on innovative digital products supporting energy efficiency, renewable energy, and climate-friendly technologies.

Hiring process

• Interviews to assess technical fit and experience with React/TypeScript and microservices-based frontend integration.
• Discussion of mentoring approach, code quality practices, and collaboration with product and UX.
• Final evaluation focused on technical decision-making and ability to support engineering best practices.