React Developer with MobX – marine industry

We are looking for a Front-End Developer to join our team and work on the client for data monitoring in navigational simulation software.

In this role, you will develop complex interfaces, integrate mapping services, and work with data visualization. You'll work on a product that trains 40% of the world’s bridge officers, enhancing maritime safety and training. As part of an innovative team, you'll shape maritime simulation and engage with real users to make a tangible impact.

Your responsibilities

• Develop and maintain a web application using React and TypeScript

• Work with Canvas/WebGL for data visualization

• Integrate mapping services (Mapbox, Leaflet)

• Develop Web Components

• Use MobX for state management

• Conduct code reviews, write tests, and participate in technical discussions

• Collaborate with backend developers and contribute to API design

Our requirements

• At least 5 years of experience in front-end development with React and TypeScript

• Strong understanding of ES6+ and modern JavaScript standards as well as Web Components

• Knowledge of MobX

• Experience working with Canvas and 2D graphics

• Mapbox and Leaflet skills

• Proficiency with Git (GitHub Actions as well)

• Familiarity with SCRUM (Agile) development processes

• Fluent English

• Residing in Poland required

Optional

• Previous work with Thrift, D3.js, PixiJS, WebGL

• Knowledge of Node.js

• Experience with SAFe, SASS/LESS and knowledge of BEM

What we offer

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market

• We share the profit with Workers - over PLN 60M has already been allocated for this aim since 2022

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more

• Comfortable workplace – class A offices or remote work

• Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose

• Fantastic atmosphere created by all Sii Power People

Recruitment stages

1. Send your CV

2. Talk to us about your expectations

3. Learn more about our projects and choose the best

4. Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment. In a survey, as many as 90% of our employees responded that Sii is a great place to work, and 95% of them think we have a great atmosphere here.