Senior Frontend Engineer

Tango; Warszawa; On-site; PLN 200,000 - 320,000; Full time

Benefits offered by this job

Stock options grant

Medical insurance for you and family

Free lunches

Parking

Hybrid work: 4 days in office, 1 at/at

Job summary

Tango is a leading live-streaming platform with a global reach and a thriving engineering culture. We are seeking an experienced Frontend Developer to build and maintain a high-load React SPA, collaborating with backend teams and product stakeholders to deliver scalable UI solutions.

Join a company that values growth, learning, and teamwork, with hybrid work options and a competitive compensation package. You will work on state-of-the-art web technologies and contribute to a platform used by

Qualifications

• 5+ years of experience in JS/TypeScript development.
• Advanced understanding of React and its ecosystem (Hooks, Context API).
• Strong state management experience with Redux Toolkit or Zustand.
• Proficient in responsive layouts with SCSS/SASS or CSS Modules.
• Experience with build tools (Webpack/Vite) and modern CI/CD tooling.
• Intermediate English proficiency.

Responsibilities

• Develop and support SPA on ReactJS: web version (mobile-first) of a high-load application and admin panels.
• Collaborate with cross-functional teams to meet product and technical needs.
• Integrate backend APIs via REST and WebSocket.
• Proactively review code and improve front-end architecture, performance, and scalability.
• Share expertise and mentor teammates.

Skills

JS/TypeScript

React

Redux Toolkit

State management

CSS/SCSS

Webpack/Vite

CI/CD

ESLint

English (intermediate)

Tools

Webpack

Vite

Next.js

Job description

Description

Tango is a successful, market leader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years.

Tango is a successful, market leader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years.

The B2C platform, based on the best-quality global video technology, allows millions of talented people around the world to create their own live content, engage with their fans, and monetise their talents.

Tango live stream was founded in 2018 and is powered by 500+ global employees operating in a culture of growth, learning, and success!

The Tango team is a vigorous cocktail of hard workers, creative brains, energisers, geeks, overachievers, athletes, and more. We push the limits to bring our app from “one of the top” to “the leader”.

The best way to describe Tango's work style is not to use the word “impossible”. We believe that success is a thorny path that runs on sleepless nights, corporate parties, tough releases, and of course our users' smiles (and as we are a LIVE app, we truly get to see our users all around the world smiling right in front of us in real-time!).

Do you want to join the party?

Responsibilities

• Development and support of SPA on ReactJS: web version (mobile-first) of a high-load application and admin panels for marketing pages
• Collaborate with other teams to effectively meet the product and technical needs of the project
• Integrate backend APIs (REST, WebSocket)
• Proactively participate in improving and fine-tuning existing solutions and discussions on architectural improvements, optimizations, and scalability of the front-end solutions
• Conduct code reviews, ensuring code quality and adherence to best practices
• Share expertise and knowledge with teammates

Requirements

• 5+ years of experience in JS (ES6+)/TypeScript development
• Advanced understanding of React and its ecosystem (React Hooks, Context API)
• Solid experience with state management frameworks, especially Redux (Redux Toolkit preferred) and Zustand
• Strong skills in creating responsive layouts with SCSS/SASS, CSS Modules, or Styled Components
• Understanding of performance optimization techniques in React (lazy loading, memoization, virtualization)
• Proficiency with build tools (Webpack/Vite) and familiarity with modern development tools (CI/CD, ESLint)
• Intermediate level of English

Nice to Have

• Experience with server-side rendering frameworks (Next.js)
• Knowledge of micro-frontend architectures and module federation
• Knowledge of browser limitations
• Experience with video streaming technologies (HLS, WebRTC)

What we offer

• Stock options grant (we’re a Silicon Valley Company)
• Competitive salary
• Medical insurance for you and 75% off for your relatives
• Free lunches
• Parking
• Hybrid flexibility 4 days in office 1 home office
• Multisport card
• Cheerful team spirit and fun office atmosphere