Software Engineer - Frontend

ESL FACEIT Group - EFG; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

EFG (ESL FACEIT Group) is seeking a Frontend Engineer to join our London team. You will work on a modern stack (React 19, Next.js 16, TypeScript) within a monorepo of ~14 subscription-owned packages, shipping features that impact conversion, retention, and revenue.

You will collaborate with product, design, and backend teams to deliver end-to-end experiences across checkout, billing, and loyalty, while upholding strong testing, observability, and safe-rollout practices.

Qualifications

• Solid production experience with React 19, TypeScript, and Next.js (App Router).
• Experience with TanStack Query and Redux Toolkit.
• Able to work in a large monorepo with complex dependencies.
• Track record owning high-traffic surfaces like checkout or payments.
• Strong eye for details: proration, currency, tax, localization.
• Familiarity with experimentation tools and A/B tracking.
• Testing culture: unit, component and visual regression.
• Collaborative with strong code review and cross-functional partnerships.
• Experience with AI coding tools is a plus.

Responsibilities

• Own the paid conversion path end-to-end across the app and checkout flows.
• Own the subscriber lifecycle and post-purchase experience.
• Own the Loyalty UI and experience for players.
• Drive experimentation velocity with feature flags and A/B tests.
• Maintain technical health of revenue-critical surfaces with robust testing and observability.

Skills

React 19

TypeScript

Next.js

TanStack Query

Redux Toolkit

Testing

Tools

Storybook

Chromatic

MSW

Job description

At EFG (ESL FACEIT Group) we create worlds beyond gameplay where players and fans become community. We pride ourselves in having a corporate social responsibility which is that \"IT'S NOT GG, UNTIL IT'S GG FOR ALL\". We are passionate about the culture we foster that ultimately helps to create and shape the world of esports, gaming tournaments, leagues, events and holistic ecosystems staged for our millions of players, fans and heroes.

Everything we do, from global esports tournaments and community-driven leagues to next-generation platforms and live events, is rooted in our passion, craftsmanship, and culture. With millions of players and fans around the world, we aim to shape the future of esports and gaming by building ecosystems that are inclusive, innovative, and enduring.

About FACEIT

As one of the core pillars of EFG, FACEIT is the beating heart of competitive online gaming. With over 34 million registered users playing 30 million matches each month, we are the industry leader in competitive play. Our platform is where gamers of all levels come together to test their skills, climb the ranks, and forge communities.

At FACEIT, we're relentless in our pursuit of excellence. We push the limits of technology, deliver cutting‑edge features, and provide an unparalleled competitive gaming experience. Our vision is simple: to empower every player to reach their full potential, while keeping competition fair, engaging, and thrilling.

The Problem You Will Solve

Every month, millions of players decide whether FACEIT is worth paying for — and your code is where that decision happens.

Subscriptions is the primary revenue engine behind the FACEIT platform. It's a Stripe‑and Xsolla-powered checkout, a Subscriber Portal managing the full lifecycle (upgrade, pause, resume, cancel, gift), and a Loyalty programme where tiers, streaks, XP and payment‑anchored benefits turn one‑off buyers into long‑term members. It's a surface where a 1% conversion lift is measurable in weeks, a race condition costs real money, and complex financial state has to feel obvious at 2 a.m. on a phone, mid‑queue.

We're looking for a Frontend Engineer who wants to be the person writing that code. You'll work in a modern stack — React 19, Next.js 16, TypeScript, TanStack Query, an in‑house design system, Storybook + Chromatic + MSW — inside a monorepo of ~14 Subscription‑owned packages. You'll ship alongside Product, Design and Backend, on features and experiments that move numbers the whole company watches.

The Team

You'll ship alongside a senior Frontend Engineer — your closest technical partner — plus two Backend Engineers, a Product Designer, a Product Manager and an Engineering Manager. Product and Design own the flows; you and the senior FE own how they land in production.

What You'll Own

• The paid conversion path, end‑to‑end. Conversion points across the app, the plan landing page, Stripe & Xsolla checkout (including gifting and upgrades), and the immediate post‑purchase experience — you'll own the code, the experiments, and the conversion numbers they produce;
• The subscriber lifecycle. Pause, resume, cancel, renewal and the Subscriber Portal — where retention is won or lost. You'll build the flows that reduce voluntary churn without dark patterns and recover involuntary churn cleanly;
• The Loyalty programme UI. Tiers, streaks, XP, payment‑anchored benefits, shop token allocation, badges. You'll turn our Loyalty service into an experience players actually understand, care about, and come back for;
• Experimentation velocity. Feature‑flagged rollouts, A/B tests on pricing, bundling, activation and cancel‑flow interventions, wired to analytics with the rigour to trust the results;
• The technical health of a revenue‑critical surface. Testing culture (Vitest + Storybook + Chromatic + MSW), observability, and the safe‑rollout discipline that lets us ship confidently to code that processes real transactions every minute.

What We Are Looking For

• Solid production experience with React 19, TypeScript, and Next.js (App Router);
• Fluent with modern data‑layer patterns — TanStack Query (or equivalent) and Redux Toolkit — and a clear point of view on when to reach for each;
• Comfortable in a large monorepo: package boundaries, dependency hygiene, incremental migrations, working across many consumers of your code;
• Track record of owning a high‑traffic, business‑critical surface — checkout, billing, payments or another revenue/retention path — and understanding the operational demands (idempotency, error recovery, race conditions, safe rollout, observability, and the uptime discipline that treats every minute of downtime as lost revenue);
• Strong eye for details of complex state in production: proration, entitlements, expirations, currency and tax, localisation, accessibility. You know the common pitfalls and handle them in code, not in post‑mortems;
• Familiarity with experimentation tooling and mechanics: feature flags, segmentation, A/B tracking, and the instrumentation that makes results trustworthy;
• Solid on testing culture — unit, component and visual regression. You don't ship revenue code without a safety net;
• Collaborative by default: fluent code review, clear writing, low‑ego debates, comfortable partnering with Product, Design and Backend as equals;
• Fluent with modern AI coding tools (Copilot, Cursor, Claude Code or similar) as part of your daily practice — and clear‑eyed about when to lean on them and when not to, especially on revenue‑critical code.

Bonus skills

• Passionate about learning new, cutting‑edge technologies and finding applicable business cases as needed;
• A passion for video games and esports is a plus.

Firmly rooted in our values, EFG is an affirmative action employer that celebrates being an equal opportunity workplace. Our unwavering commitment to fair employment extends to all individuals, regardless of their race, color, ancestry, religion, sex, national origin, age, sexual orientation, disability, citizenship, marital status, gender identity, or Veteran status.