Core Apps Developer

Unlike standard Frontend and Backend development, this is different because the applications running on the devices have to be stable, reliable, and long-term maintainable. This job is more about practice in C/C++ applications or similar. However, the underlying technology is JavaScript and TypeScript.

What will you do?

Our product, signageOS allows developers to run any web or progressive web application on professional displays, TVs, or external players. We are looking for a person who would develop so-called Core Apps for Samsung Tizen, LG WebOS, Android (TV), Raspberry Pi-like (Linux Alpine/Ubuntu/Fedora), Windows (Intel/AMD), BrightSign (Roku), ChromeOS, etc. Core App is the main component of signageOS, which creates an adapter layer between our customers and display and device manufacturers. We also provide this product as a unified JS SDK interface to our customers. The functionality that is under the hood includes, for example, video playback in various formats (codecs, containers, video and audio formats, framerate, resolution), streaming (YouTube, Netflix, UDP, RTSP, etc.), serial communication, payment terminals, receipt printers, QR/BarCode readers, File System (IndexedDB, Native), Cache API, Proxy configuration, Timezone, Brightness/Backlight, and many more.

There are countless specific use cases for end customers, e.g. professional advertising playlist players, dynamic menu boards connected to real-time API about prices, UI for set-top-box software streaming various streaming services (YouTube, Netflix, UDP, RTSP, etc.), interactive exchange rate boards for exchange offices and banks, interactive boards for displaying airport departures and arrivals, etc.

What will you get from this job opportunity?

• This unique opportunity is to create software that will run not only on classic web browsers but also on special devices such as professional displays (Samsung, LG, Sony, etc.) or on external devices such as Raspberry Pi, ChromeOS, etc.

• Develop and maintain a unified JS SDK for medium and large companies that rely on signageOS as a critical development tool.

• Unique opportunity to work on a project that needs to be developed with precision and stability, which is supported by extensive automated testing but also a long-term QA process. Projects are long-term, with an emphasis on the quality and sustainability of development.

• Design of signageOS system functionalities from scratch with the support of long-term practice and knowledge from signageOS senior developers.

• Your code will reliably power the largest display networks in the world—for example, digital menus at McDonald's, Starbucks, Burger King, and many more.

What do you need to know?

• Very good knowledge and motivation to use strict typing of TypeScript.

• Experience and diligence in writing code testable by BDD or at least TDD.

• High level of thinking in abstractions used in application design.

• At least theoretical knowledge of a wide range of algorithmization and especially design patterns.

• Ability to communicate in English.

• What do you get on top of that?

• The salary is supplemented by 5 weeks of vacation and 3 days of sick days.

• Options for a minority stake in the company.

• Teambuilding events and parties.

• Multisport card (with a co-payment of 200 CZK / month).

• Pizza Fridays - common Friday lunches not only with pizza in the office.

• Educational events, conferences (WebExpo, WeAreDevelopers, etc.)

• Coffee and refreshments - healthy and fresh fruit and vegetables as well as unhealthy Coca-Cola cans, crisps, and Kinder sweets.

• In addition to the laptop, practically any computing technology (2 monitors, keyboard, mouse, trackpad, etc.)