Sensoneo OLO Passport collection workflow.

Sensoneo OLO Passport

Kotlin Android app, .NET GraphQL API, and MySQL database work.
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Client
Sensoneo
Role
Full-stack product engineer — Android, API, and database delivery
Engagement
March 2022 – May 2022
KotlinC#.NETGraphQLMySQLAzure

Challenge

An established electronic-waste collection product needed coordinated fixes and improvements across its field application, service API, and data workflows.

My Role & Ownership

Extended the Kotlin Android application while making matching changes to its .NET C# GraphQL API, MySQL data model, and Azure-hosted services.

Delivery & Engineering

  • Diagnosed and fixed behavior across a multi-tier production product.
  • Kept mobile, GraphQL, database, and hosted-service changes aligned.
  • Delivered within the existing architecture and operational constraints.

Result

The engagement delivered coordinated improvements across the field app and the backend systems it depended on.

Highlights

Full-stack delivery spanning Kotlin, C#, GraphQL, MySQL, and Azure.
Sensoneo OLO Passport collection workflow.
Sensoneo OLO Passport item details.
Sensoneo OLO Passport field data screen.