CQUELLE Boutique Software Development Company

Our Portfolio

Real solutions built for real businesses. Here are some of the projects we're proud to have delivered.

Donation Platform for a Blood-Donation Operator
HealthTech

Donation Platform for a Blood-Donation Operator

Multi-tenant booking portal and staff back office for a blood-donation operator on one .NET API; donor data kept out of logs, URLs and third-party payloads.

.NETC#Entity Framework CorePostgreSQLNext.jsAWSKubernetes
Legal Drafting Product, Taken Over After a Vendor Handover
Legal tech

Legal Drafting Product, Taken Over After a Vendor Handover

Legal drafting product taken over after a vendor handover: four codebases, a Word add-in, a web app, a .NET 9 platform and AI services, on one release path.

ASP.NET Core on .NET 9EF CoreASP.NET IdentityReactOffice.jsTypeScript on AWS LambdaLangChainPineconeStripe
Transaction Categorization With a Human in the Loop
FinTech

Transaction Categorization With a Human in the Loop

A platform for a US advisory firm: QuickBooks transactions in, a category proposed inside the firm's own taxonomy or abstained, the rest routed to an analyst.

.NETASP.NET CoreReactPostgreSQLPyTorchFinBERTAWS ECSAWS Lambda
Veterinary M&A Marketplace and Practice Platform
HealthTech

Veterinary M&A Marketplace and Practice Platform

Marketplace, practice-management and payments platform for a US veterinary M&A company, rebuilt in slices while the inherited system kept serving real users.

.NETReactMySQLSignalRQuartzAWS ECSAWS CognitoStripe
Community Collaboration and Management Solution
SaaS

Community Collaboration and Management Solution

A full-featured engagement platform enabling organizations to connect, collaborate, and manage communities through real-time tools and data-driven insights.

React.NETPostgreSQLRedisAzure
Plant Construction Quality Control Platform
Plant Engineering

Plant Construction Quality Control Platform

Plant construction quality control software on .NET and Angular: one workflow per project, decision trees driving inspections, gates with no open item left.

.NETAngularMS SQL
Over-the-Road Trucking Operations Platform
Logistics

Over-the-Road Trucking Operations Platform

Dispatchers worked from phone calls and guesses. This platform on React and .NET gives live fleet positions, routes recalculated on traffic, maintenance alerts.

React.NETPostgreSQLAWSGoogle Maps API
Comprehensive Educational eAssessment Platform
EdTech

Comprehensive Educational eAssessment Platform

A secure online examination system supporting thousands of concurrent users with item bank management, multilingual support, and detailed scoring analytics.

React.NETPostgreSQLAWSAI/ML
Demand Side Platform (DSP) for AdTech
AdTech

Demand Side Platform (DSP) for AdTech

Programmatic ad buying decides before the page loads. This demand side platform bids across exchanges on .NET, Kafka and Redis, with targeting and analytics.

React.NETKafkaRedisElasticAWS
Timeplanned: Scheduling SaaS for Private Instructors
SaaS

Timeplanned: Scheduling SaaS for Private Instructors

Our own product: scheduling and billing for private teachers and tutors. Attendance becomes month-end billing automatically. $9.99/month, 60-day free trial.

React 19.NET 9PostgreSQLEF CoreTailwind CSS
Flashside: Flashcard App with Spaced Repetition and Personalised Learning AI
EdTech

Flashside: Flashcard App with Spaced Repetition and Personalised Learning AI

Our own flashcard app for iOS and Android, in the App Store since July 2020: spaced repetition and personalised learning AI that never answers for you.

React Native 0.86React 19TypeScript.NET 10MySQL 8Next.js 16FSRS