Resilient Mobile & Fintech Engineering

We build mission-critical mobile systems & intuitive digital products.

From architecting large-scale mobile platforms for industry leaders like Sainsbury's, Pets at Home, Worldpay, and Sky to creating our own in-house products like PaddyPay and Otto Quiz.

10+ Years

Enterprise Engineering Experience

Millions

Active Mobile Users Served

< 1.2s

High-Velocity Transaction Processing

99.9%

Uptime & Crash-Free Sessions

In-House Innovations

Our proprietary products.

Software built by Byteform to solve real-world commerce and engagement problems.

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Beta
Fintech & POS

PaddyPay

Smart POS & streamlined payments engine for modern commerce

A flexible and secure point-of-sale and transaction solution engineered for businesses that need fast, reliable payment processing with multi-hardware support.

  • Seamless payment gateway integration with low latency transaction processing
  • Plug-and-play Bluetooth & USB hardware till interfaces
  • Offline-first architecture with automatic sync when connectivity resumes
< 1.2s
Transaction Speed
99.99%
Reliability
USB / BLE
Hardware Support
In Development
EdTech & Interactive Media

Otto Quiz

Engaging interactive knowledge & trivia platform

A dynamic quiz engine bringing gamified learning, live multiplayer sessions, and intelligent question branching to communities and organizations.

  • Real-time multiplayer lobbies with zero-lag websocket synchronization
  • Adaptive AI-powered question generation across hundreds of knowledge domains
  • Rich interactive media formats (audio clips, diagrams, timed lightning rounds)
< 50ms
Response Latency
10,000+
Question Bank
Solo & Live Squads
Player Modes
Proven Track Record

Enterprise case studies.

Selected high-scale mobile engineering and architectural transformations delivered for major UK enterprises.

Explore all case studies
Pets at Home

Colleague In-Store Digital Platform (Ace Devices)

Senior Android Engineer & Architecture Lead • June 2023 – Present

Engineered next-generation colleague features on ruggedized Ace mobile devices to boost in-store operational velocity, customer service, and stock management across hundreds of UK stores.

Key Achievements

  • Spearheaded Jetpack Compose adoption with Clean Architecture (MVVM) and Kotlin Coroutines & Flows.
  • Contributed to core API design and orchestration as the enterprise migrated to modern PCP microservices.
  • Mentored engineering teams on declarative UI patterns, performance profiling, and test coverage standards.
Kotlin Jetpack Compose Clean Architecture (MVVM) Kotlin Coroutines & Flow +2 more
Read Full Case Study
Sainsbury's

Flagship Grocery Mobile App Native Transformation

Key Android Contributor & Platform Architect • May 2018 – April 2023

Transformed one of the UK's largest online grocery shopping applications from a hybrid legacy architecture to a high-performance native Kotlin solution serving millions of active users.

Key Achievements

  • Re-architected core shopping journeys into a fully modular native Kotlin app using MVVM, Jetpack, and Dagger.
  • Eliminated legacy web scraping and brittle webviews, integrating high-throughput REST APIs and real-time basket sync.
  • Supported millions of weekly grocery orders with stellar crash-free session rates (> 99.8%).
Kotlin Modular MVVM Architecture Android Jetpack Dagger / Dependency Injection +2 more
Read Full Case Study
Worldpay (FIS)

My Business Hub — Smart POS Till Solution for SMEs

Core Android & Hardware Integration Developer • April 2015 – April 2018

Built 'My Business Hub', an all-in-one smart till and point-of-sale platform integrating tablet software with secure card payment gateways, barcode peripherals, and cash drawers.

Key Achievements

  • Developed complex custom UI components and responsive merchant checkout flows.
  • Integrated low-level Bluetooth and USB communication protocols for card terminals and POS hardware.
  • Led early Kotlin adoption and enterprise-scale networking architecture across the POS team.
Kotlin & Java Payment Gateway Integration Bluetooth Low Energy & USB POS Hardware Cryptographic Security & EMV +1 more
Read Full Case Study
Sky

Core Video Streaming Library for Sky Q & Sky Go

Mobile Systems & Video Streaming Engineer • Dec 2014 – Mar 2015

Engineered high-performance video streaming components and dynamic bandwidth allocation engines powering millions of streams on Sky Q and Sky Go mobile applications.

Key Achievements

  • Built optimized streaming libraries ensuring smooth adaptive bitrate switching under fluctuating cellular signals.
  • Significantly lowered buffering rates and video startup times across diverse Android hardware.
  • Collaborated with broadcast engineers to ensure low-latency sync for live sports and premium TV.
Android SDK / NDK Adaptive Bitrate Streaming (HLS / DASH) Dynamic Bandwidth Allocation Low-Latency Video Pipeline +1 more
Read Full Case Study
Engineering Capabilities

High-impact engineering for complex digital challenges.

Whether developing proprietary software products or leading architecture transformations for household enterprises, Byteform brings deep domain expertise and meticulous craftsmanship.

Native Android & Architecture

Enterprise Mobile Engineering

Specialized in large-scale, high-concurrency mobile applications using Kotlin, Jetpack Compose, and Clean Architecture (MVVM/MVI). Built to sustain millions of daily transactions.

Core Focus Areas

  • Declarative UI with Jetpack Compose
  • Reactive asynchronous data with Coroutines & StateFlow
  • Modular multi-module application architecture
  • Comprehensive automated testing (JUnit, Mockito, Espresso)
POS & Hardware Integrations

Fintech & Payment Systems

End-to-end point-of-sale architecture, card payment gateway integrations, and robust hardware communication for modern retail and SME operations.

Core Focus Areas

  • Direct Bluetooth Low Energy & USB hardware drivers
  • Secure payment gateway & tokenization pipelines
  • Offline-first synchronization & conflict resolution
  • PCI / EMV compliance considerations & safety
Refactoring & Scale

Legacy App Modernization

Transforming brittle hybrid apps and web scrapers into high-performance, modular native solutions with zero user disruption and accelerated feature release cycles.

Core Focus Areas

  • De-coupling monolithic codebases into reusable libraries
  • Restructuring hybrid views to 100% native performance
  • Optimizing launch times, memory usage, and battery life
  • Modern CI/CD pipelines & automated release orchestration
High-Throughput Systems

Media Streaming & Real-Time

Engineering adaptive bitrate streaming players, dynamic bandwidth allocation engines, and low-latency websocket channels for live media and multiplayer platforms.

Core Focus Areas

  • Dynamic network adaptation & low-latency streaming
  • Hardware video decoding & buffer optimization
  • Real-time WebSocket & event stream synchronization
  • Interactive multiplayer & gamified experiences
Battle-Tested Stack

Modern technologies & proven engineering tools.

We select the right tools for resilience, maintainability, and peak runtime performance.

Languages & Core

Kotlin Java (OCP Certified) TypeScript SQL C/C++ NDK

Mobile & Frontend

Kotlin Multiplatform Jetpack Compose SwiftUI Android SDK Astro Tailwind CSS React

Architecture & State

Clean Architecture MVVM / MVI Coroutines & Flow Dagger & Hilt REST & GraphQL

Fintech, Media & Hardware

BLE & USB Hardware EMV / POS Protocols HLS / Video Streaming WebSockets Offline Sync

Testing & DevOps

TDD JUnit & Mockito Espresso UI Testing GitHub Actions Gradle Modularization
Let's Connect

Have an ambitious project or want to try our products?

Whether you want to learn more about PaddyPay, collaborate on Otto Quiz, or discuss custom mobile and payment architecture for your business, our doors are open.

Locations

United Kingdom (Berkshire & London)

Ghana (Accra)

Send us a message

We typically reply within 24 business hours.