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Fiverr Pro
English
$
USD
I will connect your apis and automate a workflow
William Hein
About this gig
Connect the tools your business already uses with a focused API integration in Python or TypeScript.
I build integrations that handle authentication, transform data and deal with failed requests. My work includes real-time exchange data systems for CryptoIQ and aioeloverblik, a published Python client for Denmark's electricity-data API. For my own product, Gigcloser, I built OAuth connections, scheduled inbox sync and a message approval workflow.
The starting package covers one workflow using one documented API, up to 2 endpoints, basic error handling and two revisions. You receive source code, useful comments, relevant checks and setup instructions.
Send the API documentation, sample input and expected output before ordering. We will agree authentication, data mapping, triggers and acceptance criteria.
Multi-service orchestration, large migrations, custom dashboards, complex OAuth flows and ongoing hosting require a custom quote. API subscriptions and access remain your responsibility. If the provider has no supported API, I will assess feasibility before making a commitment.
Get to know William Hein
William Hein
Full Stack Software Engineer
- FromDenmark
- Member sinceJul 2020
Languages
English, Danish
I build web applications, mobile apps and desktop tools. Through Heitech, I take projects from architecture and development through deployment and maintenance. My portfolio shows only a small selection of my work, including MusicFix's booking platform, Orpheus's ticketing system and CryptoIQ's real-time data infrastructure. I work across TypeScript, Python, Go, PHP, Swift and Flutter, choosing the stack to fit the project. Send me your goals and current setup, and I'll help define a clear scope and delivery plan.
My Portfolio
FAQ
What do you need before I order?
API documentation, sample inputs and outputs, your preferred runtime and the agreed workflow. The starting package covers one documented API and up to 2 endpoints. Please message me first to confirm feasibility. Do not paste API secrets into the brief.
