Referral lifecycle
Tracks a recommendation from discovery and receipt submission through approval, commission accrual and payout, with explicit payment states protecting each transition.
All work
Mobile App
Refer Friend
A consumer and merchant platform that turns verified recommendations into trackable rewards across mobile, web and payments.
5,000
consumer users
At time of writing
150
partner brands
At time of writing
£500k+
cumulative referrer earnings
At time of writing
Overview
Refer Friend is a live two-sided marketplace for consumers and participating businesses. People discover places, share recommendations and submit qualifying receipts; the platform connects that activity to verified referrals and cash rewards. Businesses use separate onboarding and management experiences, while the consumer product brings discovery, social activity, transactions and account tools together in one mobile app.
Product capabilities
Built around the work that matters.
Connected surfaces
Coordinates the iOS and Android app with merchant onboarding, business management, administration and background payment processing over one authoritative backend.
Discovery and trust
Combines map and category browsing with secure sign-in, merchant verification, ratings, favourites, leaderboards and responsive in-app support.
Technical approach
A modular ASP.NET Core backend acts as the system of record for a Flutter consumer app and React-based web surfaces. MySQL stores transactional data, Redis supports caching and distributed coordination, and object storage handles uploaded media. Dockerized services sit behind nginx, with automated deployment and observability supporting the live product across its mobile, web and settlement workloads.
Engineering highlights
Complexity, handled deliberately.
Consistent payments
Distributed coordination and idempotent webhook handling are designed to prevent duplicate processing when the same transaction is approached concurrently or redelivered by a payment provider.
Isolated settlement
Long-running approval, commission and payout work runs outside request handling, keeping financial processing resilient without tying background workloads to API response capacity.
Product gallery
A closer look.
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