I will integrate any API or build a custom rest API for your app

D
d_tsyhanenko
D
d_tsyhanenko
Den

Level 2

5.0
5.0
integrate any API or build a custom rest API for your app
Full Screen
integrate any API or build a custom rest API for your app

About this gig

Need to connect your app to anything? I provide professional API integration and custom API development that just works.


Whether you need to integrate a third-party API Stripe, OpenAI, Twilio, Salesforce, Google, PayPal, or any other or build a clean custom REST API from scratch, I deliver fast, secure, well-documented code. Every API integration includes proper authentication, error handling, and clear documentation.


I work with Node.js, Python, or your preferred stack, building APIs that are reliable, scalable, and production-ready. With my cybersecurity and DevOps background, your API keys and data stay protected.


What I can do for you:

  • Integrate any third-party API (Stripe, OpenAI, Twilio & more)
  • Build custom REST or GraphQL APIs from scratch
  • Fix and debug broken integrations
  • Add authentication, payments & database integration
  • Clean, documented, maintainable code


Message me before ordering and I'll scope your project for free with an honest timeline and quote. Let's connect your app to everything it needs.

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Design
    • Databases

  • Programming language

    • Python

  • Frontend framework

    • jQuery
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Django
    • Express.js
    • FastAPI
    • Flask
    • Node.js

Get to know Den

Den

Software and AI Developer, Automation, APIs and Server Administration

5.0(36)

Level 2

  • FromUkraine
  • Member sinceMar 2022
  • Avg. response time1 hour
  • Last delivery1 week

  • Languages

    English, Ukrainian, Russian
I build software that works and infrastructure that stays up. As a full-stack developer and DevOps engineer, I create web applications (React, Node.js, Python), AI chatbots and agents, custom APIs, and automation systems and I set up, configure, and manage the Linux servers they run on.

My Portfolio

Other Software Development Services I Offer

Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • J

    john_asbury

    AU

    Australia

    5

    Great work in record time. Highly skilled at what he does and very happy with the result - thank you so much for refactoring this codebase! Absolute life saver. I will certainly be hiring for future projects - highly recommended. Thank you.

    $50-$100

    Price

    2 days

    Duration

    Helpful?
    Yes
    No
Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • J

    john_asbury

    AU

    Australia

    5

    Great work in record time. Highly skilled at what he does and very happy with the result - thank you so much for refactoring this codebase! Absolute life saver. I will certainly be hiring for future projects - highly recommended. Thank you.

    $50-$100

    Price

    2 days

    Duration

    Helpful?
    Yes
    No

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