Home
Varion Framework Case Studies Insights News Contact
Home / What We Do / Custom Software

Custom
Software

Full-stack product development from zero to production. Web apps, mobile apps, APIs, and platforms — built to ship, built to scale.

50+ products shipped
5yr longest engineering partnership
12 industries served

Products, not projects

We build software products end-to-end — from discovery and architecture through development, deployment, and long-term support. Our teams embed with yours and work like a product team, not a body shop. Code reviews, CI/CD, automated testing, and production monitoring are standard, not optional.

Whether it's a greenfield MVP that needs to hit the market in 4 months, a complex multi-platform system, or a legacy application that needs modernizing — we bring the engineering depth to deliver reliably and the product thinking to build what users actually need.

Full-stack, full lifecycle

01

Web Applications

React, Next.js, Vue.js, and Angular — single-page apps, server-rendered platforms, and complex dashboards. Responsive, accessible, and production-hardened.

ReactNext.jsVue.jsAngularTypeScript
02

Mobile Apps

Cross-platform with React Native, Flutter, and Expo. Native iOS with Swift/SwiftUI and Android with Kotlin. Offline-first, real-time, and App Store ready.

React NativeFlutterSwiftKotlinExpo
03

Backend & APIs

Node.js, Python, Laravel, .NET Core, and Ruby on Rails. REST and GraphQL APIs, event-driven architectures, and microservices designed for scale.

Node.jsPythonLaravel.NET CoreRuby on Rails
04

E-Commerce & CMS

Shopify, WooCommerce, headless CMS (Strapi, Sanity), and custom e-commerce platforms. From product catalogs to checkout flows to payment integration.

ShopifyWordPressStrapiSanityWooCommerce
05

Integrations & CRM

Salesforce, Zoho, HubSpot, payment gateways (Stripe, EasyPay), video (Agora, Daily.co), and custom API integrations across your tech stack.

SalesforceStripeZohoHubSpotMuleSoft
06

MVP & Product Launch

Idea to App Store in months, not years. Lean MVPs with the right architecture to scale when traction hits. We've launched products in as fast as 4 months.

DiscoveryPrototypingAgileCI/CDLaunch

Modern, opinionated, production-proven

Frontend

React 18, 19
Next.js SSR, ISR
Vue.js 3.x, Nuxt
Angular Enterprise
TypeScript Default
Tailwind CSS Styling
Material-UI / Chakra Components

Mobile

React Native 0.79+
Flutter 3.x, Dart
Expo 53
Swift / SwiftUI iOS native
Kotlin Android native
Mapbox / Google Maps Geolocation
Firebase Mobile backend

Backend

Node.js Express, Hono, Hapi
Python Django, FastAPI, Flask
PHP / Laravel 8-12
.NET Core C#
Ruby on Rails Legacy + modern
PostgreSQL Primary RDBMS
MySQL / Redis Storage + cache

Platform & DevOps

AWS Lambda, ECS, RDS, CDK
Azure Container Apps, SQL
Vercel Frontend hosting
Docker / K8s Orchestration
Terraform IaC
GitHub Actions CI/CD
Stripe / EasyPay Payments

Products we've shipped

Retail & E-Commerce

Global Fashion Platform Retainer

5-year embedded engineering partnership with a premium fashion platform serving 160M+ annual shoppers. 9-person team working on checkout, SEO, ML modules, and iOS app development.

5 years 9-person embedded team
Python · Django · React · iOS · Snowflake · DynamoDB
Media & Entertainment

UK Consumer Platform Engineering

10-person embedded team across mobile, backend, and DevSecOps. React Native app, Ruby on Rails legacy modernization, PCI compliance program, and continuous feature delivery.

10-person team mobile, backend, DevSecOps
React Native · Ruby on Rails · Node.js · AWS EKS · PCI Compliance
FinTech

Belgian Benefits Platform Retainer

48+ month engineering partnership for an employee benefits marketplace. Ongoing web development, feature delivery, and platform maintenance on Vue.js and Laravel stack.

48+ months ongoing engineering partnership
Vue.js · Laravel · MySQL · AWS · Kubernetes
Retail & E-Commerce

Global Fashion Search & Discovery Platform

ML recommendation engine powering product discovery for 160M+ annual shoppers. High-performance ML modules integrated into a 5-year engineering partnership.

160M+ annual users served
Python · Django · Snowflake · DynamoDB · Redis
Maritime

Serverless Multi-Product Platform

30+ AWS Lambda functions, CDK infrastructure as code, RDS PostgreSQL, S3 storage, CloudFront CDN, and Cognito auth serving three interconnected products (iOS app, web dashboard, cross-platform mobile).

30+ Lambdas serving 3 products from one backend
AWS Lambda · CDK · RDS · S3 · CloudFront · Cognito
EdTech & Workforce

Kubernetes Microservices Platform

Kubernetes-orchestrated microservices for an enterprise mentoring SaaS. Domain-driven design, ElasticSearch for search, Terraform IaC, Jenkins CI/CD, and Microsoft Teams + Slack integrations.

K8s microservices enterprise-scale orchestration
Kubernetes · Terraform · Jenkins · ElasticSearch · Docker
Travel

B2B Travel API Retainer

Exclusive tech vendor for a funded travel startup. 12+ month ongoing partnership providing API development, AI features, and platform scaling to serve millions of requests.

12+ months exclusive tech vendor
Python · Django · FastAPI · LangChain · AWS
Travel

AI-Powered Travel Experience Engine

REST API backend serving thousands of users with AI-driven recommendations, experience analysis, and guest insights. ML pipeline for personalized travel experience matching using vector search and LLM orchestration.

AI-driven personalized travel recommendations at scale
Python · Django · LangChain · Pinecone · PyTorch · scikit-learn · AWS · K8s
CleanTech

EV Charging Network Analytics

Real-time telemetry and analytics platform for a nationwide EV fast-charging network. Event-driven architecture with Redshift data warehouse, S3 data lake, and operational dashboards powered by Grafana and Prometheus.

Real-time monitoring across national charging network
Redshift · DynamoDB · S3 Data Lake · EventBridge · Grafana
CleanTech

Smart Home Energy Analytics

IoT data platform for a major European energy provider. Real-time energy consumption monitoring across solar panels, EV chargers, and heating systems for 100K+ active users across 7 markets.

100K+ active users across 7 European markets
DynamoDB · S3 · Lambda · CloudWatch · Grafana · Prometheus
CleanTech

Recycling Impact Analytics

Gamified recycling platform with carbon footprint tracking, district-based analytics dashboards, and environmental impact reporting for a nationwide sustainability initiative.

Nationwide environmental impact tracking and analytics
PostgreSQL · ApexCharts · Lambda · S3 · React
Manufacturing

Production Planning & Capacity Analytics

Finite capacity scheduling system with drag-and-drop Gantt, capacity constraint modeling, and production analytics. Replaced 6 physical whiteboards with real-time digital planning across a 26-34 week horizon.

6 whiteboards → 1 platform with 88% estimation accuracy
MySQL · React · DHTMLX Gantt · Recharts · Sage 100
FinTech

International Pension Transfer Platform

Multi-party workflow orchestration connecting clients, IFAs, trustees, and FX providers. KYC/AML automation, FX trade processing, and ROPS payment workflows built on serverless AWS architecture.

3 months → 14 days transfer time, FX fees 1% → 0.35%
React 19 · Hono · AWS Lambda · Step Functions · DynamoDB
HealthTech & Wellbeing

European Telemedicine Platform

Patient and practitioner portals with live video consultations (Agora), AI-powered lab analysis, wearable integration (Thryve), and multi-step appointment booking. Localized in 6 languages across Europe.

6 languages across European markets
React 19 · Laravel 12 · Agora RTC · Stripe · OpenAI
Logistics & Mobility

Imray Digital Sailing Platform

Three products: iOS app with 18,000+ nautical locations and offline caching, analytics web dashboard, and cross-platform Tides Planner. Mapbox integration with geospatial search.

18,000+ locations with offline-first architecture
Swift · React Native · React · Node.js · AWS Lambda · Mapbox
FinTech

Salary Advance MVP

React Native mobile app with Laravel backend for a salary advance fintech. KYC/ID verification, multi-channel payment processing (EasyPay, SEPA), and invoice reconciliation. Launched to market.

MVP to market with full payments infrastructure
React Native · Laravel · AWS ECS · EasyPay · iDenfy KYC
Logistics & Mobility

On-Demand Driver Platform

Full platform: passenger app, driver app, admin panel, and accounting system. Real-time GPS tracking, Stripe payments, VoIP integration, and shift management. Flutter + Node.js on AWS.

4 apps — passenger, driver, admin, accounting
Flutter · Node.js · AWS ECS · Google Maps · Stripe · VoIP
Food & Beverage

Beer Quality Audit & CRM Platform

iOS field audit app with offline workflows, admin web platform, and bi-directional Zoho CRM sync. Product catalog with 27 properties, reporting dashboards, and Slack integration.

Offline-first field operations with CRM sync
Swift · React · Node.js · AWS Lambda · Zoho CRM · PostgreSQL
EdTech & Workforce

Gamified Learning Simulations

Real-time multiplayer simulation games for corporate training with WebSocket communication, video conferencing (Daily.co), and up to 20 concurrent players. 50+ serverless Lambda functions.

20 players real-time multiplayer simulations
React · Node.js · WebSocket · AWS Lambda · Daily.co
Media & Entertainment

Broadcast-Quality Livestream Monitor

Flutter mobile app + admin dashboard for post-production monitoring of live broadcasts. Dolby/Millicast integration for broadcast-quality, low-latency video and audio streaming.

Broadcast-quality low-latency streaming
Flutter · Dolby/Millicast · Laravel · WebRTC
Travel

Charter Flight Booking MVP

B2B2C booking platform with seat selection, 6-step booking flow, and agency management. Dual frontends (Next.js + Vite) on cost-efficient serverless architecture.

Idea → MVP with cost-efficient serverless architecture
Next.js · React · Node.js · AWS Lambda · CDK · PostgreSQL
Public Sector

EU-Funded Maritime Research Portal

Multilingual portal (EN/BG/TR/RO) with headless CMS, 37 content types, interactive Leaflet maps, and AI-powered translation. Delivered significantly under budget.

4 languages with 37 content types and interactive maps
Next.js 16 · Strapi 5 · Leaflet · PostgreSQL · Vercel
Media & Entertainment

Tribuna Football Platform

iOS and Android apps for Bulgarian football: live match center, stadium event reporting, Live Activities on the lock screen and CarPlay, and WordPress newsroom sync. Live updates reach fans in seconds via CDN fan-out, at a near-flat infrastructure cost.

10,000+ active fans with live updates in seconds
Flutter · Node.js · AWS Fargate · PostgreSQL · Cloudflare R2 · WordPress
EdTech & Workforce

Children's Virtual Banking Platform

Virtual banking system + learning platform for financial education in schools. Virtual wallets, quizzes, courses, and a virtual shop. Live in 6 schools with Phase 2 in development.

6 schools live, Phase 2 in progress
Vue.js 3 · Laravel 9 · MySQL · Pusher · AWS
FinTech

Employee Benefits Marketplace

Web platform for employee meal vouchers, eco-cheques, and gift voucher redemption. 48+ month engineering partnership with a Belgian benefits provider.

48+ months ongoing engineering partnership
Vue.js · Laravel · MySQL · AWS · Kubernetes
Media & Entertainment

UK Consumer Advocacy Platform

10-person embedded engineering team building a next-gen React Native mobile app, modernizing Ruby on Rails legacy payment and loyalty systems, and delivering DevSecOps with PCI compliance.

10-person team across mobile, backend, and DevSecOps
React Native · Ruby on Rails · Node.js · AWS EKS · PCI Compliance
HealthTech & Wellbeing

Youth Mental Health Admin Platform

Admin platform for a UK youth counselling service. Laravel backend with Orchid admin panel, real-time broadcasting (Pusher), PDF/Excel reporting, activity audit logging, and queue management.

Streamlined mental health service operations
Laravel · PHP 8.2 · Orchid · Pusher · MySQL · Redis
CleanTech

EV Charging Kiosk App

Android native app running in kiosk mode on EV charging terminals. Users charge, pay by card, and receive receipts. Bilingual (French/English), deployed with an EV charging vendor in France.

Kiosk mode on EV charging terminals in France
Android Native · React Native · TypeScript · Node.js · AWS
FinTech

Interest Rate Calculator API

MVP of a REST API for interest rate calculators helping Dutch municipalities assess financial market risks. Serverless architecture with Python.

MVP API for municipal financial risk assessment
Python · Serverless · DynamoDB · PostgreSQL · AWS
EdTech & Workforce

Enterprise Mentoring & Career Platform

SaaS platform for employee mentoring and career development at companies with 10K+ staff. Microservices on Kubernetes, with Microsoft Teams and Slack integrations for seamless workplace connectivity.

10K+ employees enterprise-scale mentoring platform
Java · Spring · Angular · Kubernetes · ElasticSearch · Terraform
FinTech

Multi-Tenant Digital Banking Platform

Multi-tenant banking platform for a European digital issuing solutions leader. Seamless, secure platform with rapid transactions, native mobile apps, and ongoing engineering support.

Multi-tenant banking platform with native mobile apps
React · React Native · Rust · Node.js · GCP
Social / Lifestyle

Location-Based Social Meetup App

Full product build as exclusive development partner for a UK startup. iOS and Android mobile apps in Flutter with Firebase backend. UX/UI design, architecture, and development — end to end.

Exclusive partner — design to App Store
Flutter · Firebase · Dart · UX/UI Design
Travel

B2B Travel Experiences API

Exclusive tech vendor for a funded B2B travel startup. Built the core API platform enabling travel brands to offer experiences to their guests, scaling to serve millions of requests. 12+ month ongoing partnership.

Exclusive vendor — API serving millions of requests
Python · Django · FastAPI · LangChain · OpenAI · AWS · Next.js
Retail & E-Commerce

Digital Commerce Capability Hub

Proprietary assessment platform for a CPG digital commerce consultancy. Multiple capability tools for large retailers, learning resources with video streaming, admin panel, and customizable reporting. Exclusive development partner.

Exclusive partner — design, architecture, and build
React · Redux · Node.js · CloudFront · Auth0 · AWS · PostgreSQL

Related insights

AI

A Model That Cannot Write a Sentence Just Coded 2,000 Invoices Against a Finance Team

TypeSafe released Jev this week, a model that answers only typed questions: pick one option, give a score, say yes or no with a probability. No prose, no reasoning trace. We wired it into the accounts payable module of a platform we run for a client and tested it two ways: nine fresh invoice PDFs, and then 2,069 supplier bills the finance team had already coded in Xero, which gave us ground truth for every one. Jev matched Claude on accuracy at about 35 times lower cost and 16 times lower latency, its confidence was honest enough to drive an auto-approve gate, and it was useless without one specific piece of context.

Read more →
AI

Anthropic-Certified Claude Architects: From AI Ambition to Systems That Ship

Everyone has an AI roadmap. Far fewer have AI in production. The gap is rarely the model — it's the architecture, the evaluation discipline, and the engineering judgment around it. Our Anthropic-certified Claude Architects close that gap: LLM builds, RAG pipelines, agentic systems, and engineer-led AI coding adoption, taken from prototype to something you can put your name on.

Read more →
Engineering

A Coding Agent That Never Leaves the Laptop

Most agentic coding tools send your codebase to someone else's GPU. One of our engineers built the opposite: the full agentic loop on a MacBook Pro M4 Pro, running a local Qwen3.6-35B through OpenCode, with no token ever leaving the machine.

Read more →
Engineering

Human in the Lead: How Engineer-Led AI Development Delivered a FinTech Platform in Record Time

A two-person team delivered a full pension transfer platform in under 750 hours — not by handing the reins to AI, but by keeping the engineer firmly in the lead and using Claude Code to execute at the speed of their decisions.

Read more →

Ready to build
your product?

Let's talk about your idea — from MVP to enterprise scale.

Get in Touch →