I will build custom API integrations to automate your business


About this gig
Tired of Zapier or Make.com breaking, hitting limits, or costing you monthly fees for something that should just work?
We build custom, secure Python integrations that connect your CRM, payment gateways, and internal tools into one reliable automated system no platform restrictions.
Spengler Systems delivers robust, tailored API integrations into one seamless, automated engine built for your operational needs.
What we Provide:
* Custom API Development: Connecting CRM, ERP, Payment Gateways (Stripe, PayPal, Plaid), and proprietary software.
* Data Sync & ETL: Extracting, cleaning, and moving data seamlessly to eliminate manual entry.
* Secure Backend Logic: Built with Python, using proper authentication (OAuth2, API keys).
* Workflow Automation: Designing custom logic to automate multi-step processes from trigger to completion.
Industries we Support: Finance, E-commerce, CRM, Social Media & etc.
Why Work With Us:
* Scalable Code: Engineered for high performance.
* Security First: We prioritize data protection.
* Full Documentation: Clear instructions included.
* Professional: Proactive communication.
Please message us before ordering to discuss your workflow
Get to know SpenglerSystems
Advanced Solutions with a Focus on Scalable and Clean Architecture
- FromGermany
- Member sinceOct 2025
- Avg. response time1 hour
Languages
English, Russian, German
Other Software Development Services I Offer
FAQ
Is my business data secure and GDPR compliant?
Absolutely. we prioritize data security by using environment variables for API keys, secure OAuth2 authentication, and encrypted data transfer. We are also fully open to signing a Non-Disclosure Agreement (NDA) before we discuss your proprietary workflows.
Is this just a Zapier or Make.com template?
No. While no-code tools are great for simple tasks, we build robust, custom Python architectures. This ensures you aren't limited by platform restrictions, expensive monthly task limits, or rigid templates. Your unique workflow dictates the code, not the other way around.
Will I own the code and the final product?
Yes, 100%. Upon completion, you will receive the full source code along with complete documentation. You own the intellectual property and are not locked into any recurring agency fees or hidden subscriptions.
What do you need from me to get started?
Just a clear explanation of your current manual process and the software you use. We will discuss your end goal, and SpenglerSystems will handle the technical mapping. If needed, we will guide you on how to securely generate API keys for your platforms.
Do you need my personal login credentials to build this?
No. we adhere to strict security best practices. We will show you how to generate secure API keys or Webhooks from your accounts. This means we can integrate your systems without ever needing your personal passwords.
I am not a technical expert. Will I be able to manage this?
You don't need to be. SpenglerSystems specialize in translating complex business needs into technical solutions. The final product runs silently in the background, and we provide clear, non-technical documentation on how to monitor and use it.
My business process is very unique and complex. Can you handle it?
Complex workflows are our specialty. Unlike off-the-shelf software, custom Python integrations allow us to build deep conditional logic, multi-step data routing, and custom error-handling tailored exactly to your operational quirks.
Can you fix or improve an automation someone else built?
Yes. Many clients come to us with broken scripts or outgrown Make.com scenarios. We can audit your current setup, refactor the code, or migrate it entirely to a stable, scalable Python backend.
Do you offer support or maintenance after delivery?
Yes. SpenglerSystems provide a post-delivery warranty period to ensure the integration runs smoothly in your live environment. If an API updates or you need to scale the architecture later, I am available for continued maintenance and upgrades.
Why choose Spengler Systems over a cheaper alternative?
We build enterprise-grade infrastructure. You get the technical expertise of a dedicated software engineer, transparent communication, secure coding practices, and a solution that actually scales with your business growth.

