iGaming Frontend Development Services
Services+ 9 years in the game
+ 60+ iGaming projects
Custom frontend development services and solutions
Frontend web development
Online casino and sportsbook web applications, from lobbies and bet slips to account and cashier pages, built in React and Next.js with TypeScript. Responsive design is tested across browsers, devices and screen sizes, with performance tracked against Core Web Vitals from the first release. Several brands and markets run from one codebase, each with its own layout, content and rules.
Web UI inside your apps
Web UI that runs in the browser and inside your native or Flutter app, consistent with the app’s own screens, sessions and navigation. Selected screens can share one web codebase across browser and app, and updates limited to the embedded web UI can often ship without a new app release.
UI development and UX design
Workshops, research, wireframes, user experience and interface design as the first stage of the build, designed next to the frontend developers who implement them. Design systems, animation and accessibility carry through to the frontend code, within the brand guidelines you provide.
Headless CMS and configurator
Your team can configure brands and publish pages and promotions without a code release, using the templates and rules we build with you on Payload, our own foundation. Where personalization is in scope, frontend events can support player segmentation that respects the responsible gaming status your platform supplies. For larger content teams, we can scope Strapi as a premium alternative.
Middleware layer
A middleware layer (backend for frontend) sits between your frontend and the platform. Your own features and rules live there, such as jurisdiction logic or promotions the platform does not cover, so you extend your offer without changing platform. The platform keeps balances, payments, player accounts and settlement, and the layer works within its APIs and your agreements with the provider.
Games and gamification
The frontend is also the game and the content players see. We weave gamification mechanics, instant win games and bespoke games into the product, from missions and tournaments to crash and mini games built for your brand.
Case studies
BETFAN Sportsbook Web UI
OlyBet Sportsbook & Casino Mobile App
Proprietary Fixed-Pool Betting Platform, PAM & Frontends
Five UKGC and MGA brands migrated between two B2B platforms
50+ startups and enterprises trusted CrustLab since 2017
Choosing a frontend development for iGaming
One frontend development team
Design, web frontends, in-app web, CMS, middleware, analytics and games come from one team, so a change to the lobby and the rule behind it ship together instead of waiting on two vendors.
A production-proven foundation
We build on a foundation of production-proven modules where they fit: frontend templates, CMS templates and the brand configurator. Your budget goes into what sets your brand apart.
Your features on your platform
Your own features and rules live in a middleware layer on the platform you already run, so fewer of your changes depend on its release cycle, within the APIs and agreements you have with the provider.
Many brands, one codebase
Launching a new brand or market starts from one codebase with its own layout, content and rules, instead of a separate project each time. For OlyBet, one mobile codebase supports the Baltics, Croatia and France.
All rules in one place
Jurisdiction rules sit in one layer where they can be tested, not scattered across screens. We used this approach for five UKGC and MGA brands migrated between two B2B platforms, with jurisdiction rules driven from one layer.
After launch, keep it running
Most of our client relationships’ value comes after the first release. Once your frontend is live, we maintain it under a contract that sets work types, priorities and response times, so fixes and platform updates have an owner from day one.
What we commit to
An honest scope If your platform’s configuration, CMS or an existing template covers what you need, we tell you before you pay for a custom build.
The platform boundary mapped first The Discovery Sprint shows which changes your team can release without the platform and which still depend on your provider, before any build starts.
A takeover audit that can say no Before we take over an existing frontend or middleware, a code quality check comes first, and it can return a red light.
What we will not promise
Conversion, retention or revenue uplift We build the frontend and track the metrics agreed in discovery; you run the business.
More independence than your provider allows The middleware layer extends what you control; it works within your platform’s APIs and agreements, not around them.
Regulatory or app store approval We build the player-facing flows your compliance team specifies; approvals sit with the regulators, testing bodies, Apple and Google.
Core Web Vitals scores outside our code We build to the targets and track them from the first release; hosting, content and third-party scripts also shape the result.
Our Frontend Development Process
Technology behind our custom frontend development
Web: React and Next.js
React and Next.js frontends written in JavaScript and TypeScript, for lobbies, sportsbooks and account pages that serve several brands from one codebase.
Headless CMS: Payload
Payload CMS behind our brand configurator and CMS templates, part of our own foundation.
Mobile: Swift, Kotlin, Flutter
Native iOS apps in Swift, Android apps in Kotlin and Flutter apps that embed this web layer on selected screens.
Integrations
Platform and sportsbook provider APIs, CRM tools, and the KYC, geolocation and payment providers your platform uses, connected through the frontend or the middleware layer.
FAQ
What does a frontend development company do for a casino or sportsbook operator?
It builds everything a player touches: the casino lobby, the sportsbook and bet slip, account and cashier pages, promotions and games, on web and inside apps. CrustLab also builds the layer behind it, the CMS, configurator and middleware, so your team can ship many changes without waiting for a platform release. We do not start from scratch: we reuse production-proven modules where they fit and build the rest around your product.
Can you build a custom frontend on the platform we already run?
Yes. Our integration work includes The Mill Adventure, White Hat Gaming, Strive Gaming, SB Software, SOFTSWISS, Kambi, Bede, Light & Wonder and BetMakers, as well as CRM tools including Optimove, Fast Track and Xtremepush. What the frontend can change depends on the APIs, data access and agreements your provider offers, and we map that integration scope in the Discovery Sprint. For casino products, we also run casino frontend modernization on the platform you have.
What is a middleware layer (backend for frontend), and do we need one?
Not always. A middleware layer sits between your frontend and the platform and can handle rules or features your platform does not provide. For one brand in one market with a stable platform API, a direct integration is often simpler and cheaper to maintain. Middleware makes sense when several brands or markets share rules or need features of their own. Balances, payments, player accounts and settlement stay on the platform. If you change providers later, we assess which changes the middleware can absorb and which player journeys need updates.
Can you replace our frontend step by step while the current one stays live?
Where the platform supports parallel rollout, we replace selected journeys while the current frontend stays live, instead of a big-bang frontend rebuild. In the Discovery Sprint, we identify a first candidate, such as the lobby or account pages, and define acceptance criteria and a rollback path for each phase. For five UKGC and MGA brands migrated between two B2B platforms, CrustLab delivered one frontend and CMS across all five.
What can our team configure and publish without a developer?
Your team can configure brand experiences and publish pages and promotions in the CMS without a code release, within the templates and rules we build with you. Where segmentation is in scope, frontend events can support personalization that respects the player status and controls your platform supplies. New page types or rules outside the existing configuration are scoped as development work. On the multi-brand platform we built for BetMakers, 22 brands run on one instance.
How do you handle state-level requirements such as geolocation, KYC and responsible gaming messages?
Your compliance team defines the requirements, and your platform and providers supply the checks and decisions. We build the frontend side that applies them correctly: location checks before a bet, Know Your Customer (KYC) steps at registration, and the limits and responsible gaming messages each market requires, configured per jurisdiction in one place. CrustLab has delivered player-facing controls for regulated products in markets including the US, the UK, Malta, Poland and South Africa, with the exact flows scoped to each market and platform.
We want to outsource frontend development: can you work with our in-house team and US hours?
Yes. A bespoke squad works inside your roadmap with your product owner and engineers, with working hours that overlap US business hours, agreed for each engagement. We do not rent developers by the hour. If you plan to take the frontend in-house later, Build-Operate-Transfer moves the team or the knowledge to your organization, as agreed in the contract.
- CrustLab
- iGaming Frontend Development
