Senior Software Engineer - Front End

Position Overview

We are seeking a skilled Senior Software Engineer with strong React expertise to join our development team. Together we will be building a marketing SaaS platform, specifically focusing on user interfaces, personalization features, and data-driven visualizations. This role requires someone who combines technical independence with a proactive approach to problem-solving, proposes innovative solutions, and collaborates effectively as a valued team member.

What you will do

Development & Implementation

• Design, develop, and maintain complex front-end applications using React and TypeScript
• Build and maintain microfrontend architecture using Module Federation
• Participate in system architecture discussions and technical design reviews
• Ensure applications are scalable, performant, and deliver exceptional user experiences
• Develop reusable component libraries and maintain design system consistency

Quality Assurance

• Write comprehensive unit tests, integration tests, and end-to-end tests using React Testing Library and Playwright
• Participate in code reviews and provide constructive feedback to team members
• Debug and troubleshoot application issues across development, shared qa, and production environments
• Monitor application performance and implement optimizations
• Ensure accessibility standards are met across all features

Collaboration & Communication

• Work closely with product managers, designers, and backend engineers
• Collaborate with other frontend developers to ensure consistency and code quality
• Participate in sprint plannings, groomings, daily standups, and retrospectives
• Mentor junior developers and contribute to team knowledge sharing
• Document technical specifications and maintain project documentation

Requirements

Technical Skills

• 5+ years of professional software development experience
• Strong proficiency in React, JavaScript (ES6+), and TypeScript
• Deep understanding of React hooks, context API, and state management solutions
• Experience with microfrontend architecture and Module Federation
• Proficiency with React Testing Library and modern testing practices
• Strong understanding of HTML5, CSS3, and responsive design principles
• Experience with RESTful and GraphQL API integration and asynchronous programming
• Familiarity with modern build tools and bundlers

Soft Skills

• Strong problem-solving and analytical thinking abilities
• Attention to detail and commitment to code quality
• Excellent communication and collaboration skills
• Ability to learn new technologies and adapt to changing requirements

Preferred Qualifications

Advanced Technical Skills

• Experience with Webpack configuration and optimization
• Knowledge of CI/CD pipelines and Jenkins
• Experience with state management libraries
• Knowledge of cloud platforms (AWS)
• Understanding of security best practices and authentication systems (OAuth, JWT)

Additional Experience

• Experience with design systems and component libraries (Storybook)
• Knowledge of performance optimization techniques and web vitals
• Experience with monitoring and logging tools (Loki, Datadog, Kibana)
• Familiarity with accessibility testing tools and practices
• Experience with end-to-end testing frameworks (Playwright, Cypress)

Why join us

• Take ownership of technically challenging, high-impact product areas
• Work with a talented, friendly team of engineers, designers, and product people
• Be part of shaping a SaaS product used by global customers
• Flexible working model: modern Gdańsk office or remote from home
• Competitive compensation package, with opportunities for growth and learning
• Modern development tools and equipment