I help software teams develop and improve backend applications using Ruby and TypeScript. Whether you need a new API, an external service integration, or improvements to an existing application, I can take on a defined implementation scope and work within your existing codebase and development workflow.

Build and extend APIs for web applications and external integrations.

Implement backend features and business logic.

Connect third-party services through APIs and webhooks.

Investigate slow endpoints and database queries, then implement targeted improvements.

Refactor existing backend code to make it easier to test and maintain.

Add automated tests for the features and changes delivered.

We’ll start by reviewing your goals, current application, and technical constraints. I’ll propose a scope with clear acceptance criteria, then implement the agreed changes in reviewable increments. You’ll be able to follow progress through your repository and regular updates.

Depending on the agreed scope, you’ll receive:

Backend code delivered through pull requests in your repository.

Automated tests for the agreed functionality.

API documentation or usage examples, where applicable.

Database migrations and configuration changes, where required.

Handover notes covering setup, validation, and deployment considerations.

The focus is backend implementation. Frontend development, infrastructure changes, and ongoing support can be discussed and scoped separately.

Send me a brief description of your product, current tech stack, and the feature or issue you’d like to work on. We’ll confirm the deliverables, timeline, and price before work begins.

Based in Tampere, Finland, and working remotely through Omusubi Labs Oy.