Are you passionate about web development and eager to shape the future of real-time communication?
Join Sii to build and maintain high-performance TypeScript VoIP SDKs that power seamless audio-video experiences from browser to backend. Working in a tight, experienced team, you will modernise legacy code, design new features with Vue 3 and Node.js, and tackle tough debugging challenges. Our knowledge-sharing culture, modern tooling, and clear growth paths will keep you learning every day. This is a hybrid role based in Wrocław, combining mostly remote work with 1–2 office days for face-to-face collaboration.
Ready to code what connects the world? Apply now and let’s grow together!
responsibilities :
Maintain and modernize an existing TypeScript codebase for VoIP SDKs
Design, develop, and test scalable features across the web stack (frontend and backend)
Contribute to defining and improving development standards and best practices
Support effort estimation and participate in sprint planning and reviews
Assist in release preparation and technical documentation of developed features
requirements-expected :
Expected 2 years of professional experience in web development using JavaScript and TypeScript
Practical experience with modern frontend frameworks (Vue.js, React, or Angular) and familiarity with backend technologies like Node.js
Exposure to WebRTC, SIP, or other VoIP technologies, with a willingness to deepen expertise in this area
Proactive, curious mindset with strong collaboration skills and a desire to grow in a full-stack role
English language skills at a minimum B2 level, enabling effective communication in an international team
Fluent Polish required
Residing in Poland required
offered :
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