Dual Citizen, Deniz Demirsoy

Backend engineering for Shopify brands — APIs, apps, and integrations.

Python. Shopify. Productivity.

I’m a senior freelance developer building reliable backend applications that integrate with Shopify — from custom apps and webhooks to data pipelines, automation, and third-party systems.

Shopify Apps

Admin extensions, APIs, billing, auth.

Integrations

ERP / CRM / PIM, fulfillment, payments.

Automation

Webhooks, queues, sync jobs, observability.

Let’s build

Available for short projects & retainers

Services

Design and build

Designing and building Python backends that scale with your business — clean domain logic, production-ready APIs, background jobs, and data pipelines.

Emphasis on maintainability, observability, and long-term ownership rather than quick fixes or fragile implementations.

Built with

Python

Extend Shopify

Extend Shopify beyond the storefront through custom apps, Admin extensions, and robust API integrations that match real operational workflows.

Experience across complex catalogs, multi-system sync, and edge cases in real-world commerce setups.

Integrated with

Shopify

Automate operations

Automating operations across systems using webhooks, queues, and scheduled jobs to remove manual work and keep data consistent.

Focus on resilience: retries, monitoring, alerting, and predictable failure modes in production environments.

Running on

Microsoft Azure

Track record

Top university education

2 degrees

Industrial Engineering (KIT)
Computer Science (LMU)

Long-time Microsoft employee

16 years

Technology advisory and sales roles working with enterprise customers.

Shopify expertise

10 years

Startup to Shopify Plus projects, custom apps and integrations.

Contact

Send a message and I’ll reply with next steps.