Frontend Product Engineer (React + TypeScript)

Reposted 4 Days Ago
Be an Early Applicant
Warsaw, Warszawa, Mazowieckie
In-Office
25K-40K Annually
Mid level
Beauty • Software
The Role
The Frontend Product Engineer will develop and maintain the core booking engine, build user-facing features, write tests, and collaborate across various tech teams.
Summary Generated by Built In
Location: Warsaw, Poland - Hybrid (4 days on-site / 1 day remote)
Contract: B2B · 25-40 k PLN net / month + RSUs

Why Fresha & Why Now?

Fresha is re-imagining how the global beauty and wellness industry runs. 120k+ businesses, 450k+ professionals, millions of clients, and 1 billion+ appointments already rely on our platform for everything from bookings to payments.

Join us at a moment of rapid scale - your work will surface on screens around the world within days, not quarters.

What You’ll Do

* Own and evolve our core booking & scheduling engine - the heartbeat of Fresha - ensuring it scales smoothly and delivers seamless experiences for millions.
* Design, build, and ship new user-facing features in React + TypeScript, reaching millions of professionals and clients.
* Own features end-to-end: discovery, technical design, implementation, testing, rollout, and observability.
* Tap into (and extend) our Design System to ship polished UI quickly while raising the bar for consistency.
* Write robust automated tests (Cypress, Jest, React Testing Library) and keep the CI/CD pipeline green.
* Partner closely with Product, Design, Backend, Infrastructure, and Mobile engineers to take features from discovery to rollout and beyond.
* Accelerate with AI: harness AI agents, LLM-powered coding tools, and access to a wide range of AI tools (e.g., chatbots, dev assistants).
* Curious about backend, DevOps, or mobile? Great - we’ll support you in exploring any part of the stack.

What We’re Looking For

  • Deep expertise in modern React & TypeScript, with a track record of shipping large-scale, consumer-facing web apps.
  • Solid grasp of GraphQL (Apollo or urql) and REST fundamentals.
  • Experience working with design systems.
  • Fluency in web performance, cross-browser, and responsive design best practices.
  • A testing mindset and familiarity with JS/TS testing frameworks.

  • Don’t meet every single requirement? Passion and potential matter more than perfect check-boxes. If this role excites you, apply today and grow with us!

Why You’ll Love It Here

  • Direct impact & ownership - your decisions shape the product.
  • Modern tech stack, continuous learning, and innovation.
  • Competitive salary, equity, private healthcare, and more.

Our Technology Stack - Frontend Technologies

  • React - Modern JavaScript UI library
  • TypeScript - Strongly typed JavaScript
  • React Router DOM - Client-side routing
  • React Redux - State management
  • Zustand - Lightweight state management
  • Formik - Form management

Build Tools & Bundlers

  • Rsbuild - Modern build tool (Rspack-based)
  • esbuild - Fast JavaScript bundler
  • Turbo - High-performance build system
  • SWC - Rust-based JavaScript compiler

UI & Design System

  • Fresha Design System - Custom design system
  • Sass/SCSS - CSS preprocessor
  • PostCSS - CSS transformation
  • Lottie - Animations

State Management & Data Fetching

  • Redux with Redux Actions
  • URQL - GraphQL client

Backend Communication

  • GraphQL - API query language
  • GraphQL Code Generator - Type-safe GraphQL
  • Phoenix - Real-time WebSocket channels
  • WebSocket & Server-Sent Events support

Backend Technologies

  • Node.js
  • TypeScript
  • Elixir
  • Ruby on Rails
  • PostgreSQL
  • Redis
  • Docker
  • Kubernetes
  • NginxAWS

Testing Framework

  • Jest - Unit testing
  • Cypress - Component and integration testing
  • Testing Library - React testing utilities
  • MSW - API mocking

Code Quality & Linting

  • ESLint - JavaScript linting
  • TypeScript strict mode

Development Tools

  • Storybook - Component documentation
  • Happo - Visual regression testing

Mobile Development

  • Capacitor - Native mobile app wrapper
  • iOS & Android - Native mobile platforms

CI/CD & DevOps

  • GitHub Actions - Continuous integration
  • AWS - Cloud infrastructure
  • Datadog - Monitoring and analytics

Monitoring & Analytics

  • Sentry - Error tracking
  • Amplitude - User analytics
  • Unleash - Feature flags

Date & Time

  • date-fns - Date manipulation
  • moment - Date handling (legacy)

Interview Process

  • Screen call - Video call with a member from the Talent Team - 30 - 60 minutes
  • 1st stage - Technical Video call/In-person interview with our Engineers- Up to 60 minutes
  • Tech stage - Technical Video call/In-person interview with our Engineers - up to 2 hours
  • Final stage - Video call/In person meet with our CTO - up to 60 minutes

  • We aim to finalise the entire interview process and deliver feedback within 4 weeks.

    Every job application received is reviewed manually by our talent team. While we strive to assess applications within 7 days, the sheer volume of talented individuals expressing interest may occasionally extend this timeframe

Top Skills

Amplitude
Apollo
AWS
Capacitor
Cypress
Datadog
Date-Fns
Docker
Elixir
Esbuild
Eslint
Github Actions
GraphQL
Jest
Kubernetes
Moment
Node.js
Postgres
React
React Testing Library
Redis
Redux
Rest
Rsbuild
Ruby On Rails
Sentry
Storybook
Swc
Turbo
Typescript
Urql
Urql
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The Company
HQ: New York, NY
287 Employees
Year Founded: 2015

What We Do

Fresha is the world's largest and top-rated booking platform for Beauty and Wellness trusted by millions of consumers worldwide. Fresha is used by 70,000+ businesses and 300,000+ professionals worldwide, processing over 20mil appointments per month. Fresha is headquartered in London, United Kingdom with global offices located in New York City, Vancouver, Sydney, Dublin, Amsterdam , Dubai and Warsaw. The company raised $185M in venture capital funding to date from leading institutional investors.

Fresha allows consumers to discover, book and pay for beauty and wellness appointments with local businesses via its marketplace, while beauty and wellness businesses and professionals use an all-in-one platform to manage their entire operations with its intuitive free business software and financial technology solutions. Fresha’s ecosystem gives merchants everything they need to run their business seamlessly by facilitating appointment bookings, point-of-sale, customer records management, marketing automation, loyalty, beauty products inventory and team management. The consumer marketplace unlocks revenue potential for partner businesses by leveraging the power of online bookings and automated marketing through mobile apps and advanced integrations with major tech brands including Instagram, Facebook and Google.

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