FullStack Developer (Python+ React)

2-3 per week you need to be available until 9:00 pm due to meetings with the US team.

Altimetrik Poland is a digital enablement company. We deliver bite-size outcomes to enterprises and startups from all industries in an agile way to help them scale and accelerate their businesses. We are unique in Poland's IT market. Our differentiators are an innovation-first approach, a strong focus on core development, and an ability to attack the challenging and complex problems of the biggest companies in the world.

We are looking for a Fullstack Developer for one of our clients in the payment industry to build and maintain internal tools that support our teams’ workflows and improve operational efficiency. The ideal candidate is comfortable working across the stack, with a primary focus on frontend development and strong proficiency in JavaScript, and Familiarity with Python. You will collaborate closely with product managers, designers, and backend engineers, data engineers to design intuitive user interfaces, integrate with backend services, and ensure our internal tools are reliable, performant, and easy to use. 

Responsibilities:

• Design, develop, and maintain frontend interfaces for internal tools used by various teams.

• Implement responsive, accessible, and user-friendly UI components using modern JavaScript frameworks/libraries (e.g., React, Redux, TypeScript, Linaria (CSS-in-JS), etc).

• Integrate frontend applications with backend services and APIs

• Write clean, maintainable, and testable code (unit, integration, and end-to-end tests as needed).

• Participate in code reviews, providing and receiving constructive feedback to maintain high code quality.

• Troubleshoot, debug, and resolve issues in production and staging environments.

• Contribute to technical design discussions and help define best practices, coding standards, and tooling for the frontend stack.

• Document features, components, and workflows for internal users and other developers.

Skills and Experience:

• Proficiency in Python, JavaScript and modern frontend development practices.

• Solid understanding of HTML5, CSS3, and responsive design principles.

• Experience consuming RESTful and/or GraphQL APIs from frontend applications.

• Familiarity with version control systems (e.g., Git) and collaborative development workflows.

• Ability to write tests and use testing frameworks (e.g., Jest, React Testing Library).

• Strong problem-solving skills and attention to detail.

• Good communication skills and ability to work cross-functionally with non-technical stakeholders.

• Experience building internal tools, admin dashboards, or operational dashboards.

• Strong TypeScript and React fundamentals, including Redux state management patterns.

• Experience with design systems, component libraries, or UI frameworks (e.g., Material UI, Tailwind CSS).

• Familiar with Graph visualization, Search tool

• Experience with data visualization libraries (e.g., D3.js, Chart.js, Plotly) for internal reporting tools

• Experience building data-heavy UIs — tables with pagination, lazy-loaded trees, filterable lists.

• Familiarity with CI/CD pipelines and automated deployment workflows.

• Experience working in an Agile or Scrum environment.

🔥We grow fast.

🤓We learn a lot.

🤹We prefer to do things instead of just talking about them.

If you would like to work in an environment that values trust and empowerment... don't hesitate, just apply!