Frontend Developer

Credentially; Polska; On-site; PLN 180,000 - 240,000; Full time

Job summary

A forward-thinking healthcare startup is seeking a Frontend Developer to join its growing engineering team. This role involves building high-quality user interfaces, optimizing performance, and collaborating closely with product managers and designers. The ideal candidate should have experience with React, HTML5/CSS3, and a strong understanding of frontend best practices. Join us to make healthcare safe and accessible for everyone.

Qualifications

• Experience working in a team.
• Ability to understand and navigate existing codebases.
• Familiarity with JSON schema-driven UI.

Responsibilities

• Build and maintain high-quality user interfaces using modern frontend technologies.
• Collaborate closely with product managers and designers.
• Optimize for performance, accessibility, and scalability.

Skills

Experience with React and state management tools

Clean, modular, testable code practices

Solid understanding of HTML5/CSS3 and responsive design

Experience working with REST APIs

Knowledge of frontend performance optimisation and accessibility best practices

Education

Bachelor’s degree in Computer Science/Engineering/Mathematics or related field

Tools

React Testing Library

GitHub

CI/CD tools and modern build pipelines

Material UI or Syncfusion

Job description

About Us

Credentially, a startup with a clear purpose, is dedicated to making healthcare safe and accessible for everyone. Our mission by 2030 is to credential 1 million healthcare workers every year, ensuring they have the necessary skills and knowledge to provide the highest quality of care. Additionally, we aim to add 10 million hours of patient care to healthcare systems, improving access to essential services and ultimately enhancing patient.

Our Values

• Doing the right thing: Integrity guides our every decision. We hold ourselves accountable to the highest ethical standards, ensuring honesty, transparency, and fairness in all endeavours.
• Striving for excellence: We're relentless in our pursuit of excellence. By setting ambitious goals and fostering a culture of innovation, we push boundaries to exceed expectations and drive positive change.
• Aligning as a firm: Collaboration is key to our success. We work as one cohesive team, leveraging diverse talents and perspectives to achieve our shared goals with precision and efficiency.
• Measuring impactful outcomes: Results matter. We measure success not just by numbers, but by the tangible impact we make in transforming healthcare systems and improving patient outcomes.
• Embracing teamwork and fun: We believe in the power of camaraderie and enjoyment. Through teamwork, laughter, and a supportive work environment, we inspire creativity and resilience to overcome challenges and achieve greatness.

About the Role

We are now seeking an enthusiastic and skilled Frontend Developer to join our growing engineering team. You’ll be responsible for building high-quality user interfaces, evolving our design system, and ensuring our product feels fast, intuitive, and reliable for our users.

Responsibilities

• Build and maintain high-quality user interfaces using modern frontend technologies (e.g., React, Typescript), ensuring smooth, intuitive, and visually consistent experiences across the platform.
• Collaborate closely with product managers and designers to translate requirements, wireframes, and prototypes into production-ready features.
• Contribute to and evolve our design system, developing reusable components and UI patterns that improve developer velocity and product consistency.
• Optimize for performance, accessibility, and scalability, ensuring pages load quickly, interactions feel responsive, and UI is usable by all users.
• Write clean, maintainable, and well-tested code, following best practices in version control, documentation, and code review processes.
• Participate in architectural discussions, helping shape the frontend direction, tooling decisions, and longer-term technical roadmap.
• Identify and resolve frontend bugs, UI inconsistencies, and bottlenecks through debugging, monitoring, and proactive improvements.
• Work closely with backend engineers to integrate APIs, streamline data flows, and ensure efficient client–server interactions.
• Contribute to continuous improvement, suggesting enhancements to development workflows, CI/CD pipelines, and overall quality standards.
• Stay up-to-date with industry trends, exploring new frontend frameworks, performance techniques, and best practices to keep our product modern and competitive.

Skills and Experience

Required:

• Experience with React and state management tools
• Clean, modular, testable code practices
• Solid understanding of HTML5/CSS3 and responsive design
• Experience working with REST APIs
• Experience working in a team (we use GitHub)
• Ability to understand and navigate existing codebases
• Knowledge of frontend performance optimisation and accessibility best practices
• Understanding of design patterns and scalable frontend architecture principles
• Bachelor’s degree in Computer Science/Engineering/Mathematics or related field
• Experience with frontend testing frameworks (Jest, React Testing Library)
• Experience with form libraries (Final Form, React Hook Form)
• Familiarity with JSON schema-driven UI
• Experience with UI libraries like Material UI or Syncfusion
• Experience with CI/CD tools and modern build pipelines
• Pet projects or open-source contributions

Key Words

Frontend:

Backend (nice to have understanding):

Frontend Developer - HTML-coder – Middle