Fullstack Software Engineer with Node.js and C++

Are you excited to create intuitive user interfaces for products trusted by millions worldwide? We’re partnering with a global leader in cloud communications, renowned for delivering real-time video, voice, and messaging solutions that power many popular platforms you likely use daily. We’re looking for a Senior Fullstack Developer with strong Node.js skills and a genuine passion for low-level programming.

Ready to contribute to a product making a global impact? Let’s connect. Apply now and take your next big career leap.

Your responsibilities

• Develop front-end components for complex, real-time applications with a focus on scalability and performance

• Work closely with designers and backend teams to build intuitive and efficient user interfaces

• Implement and follow best coding practices to ensure maintainable and up-to-date code

• Collaborate with team members to share knowledge and improve development processes

• Participate in technical discussions and help make informed decisions to enhance system architecture

Our requirements

• Minimum 5 years of professional experience in front-end or fullstack development, with strong skills in modern JavaScript and TypeScript

• Good knowledge of C++ or professional experience in the telecommunications industry, demonstrating familiarity with low-level programming concepts and system internals

• Proven experience with modern front-end frameworks

• Solid understanding of responsive design principles and performance optimization techniques

• Strong collaboration and communication skills in English (minimum B2 level), enabling fluent support and mentorship of team members in an international environment

• Residing in Poland required

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.