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You will get Custom API Development and Integration
Project details
Looking for reliable and efficient APIs to power your applications? I specialize in designing and building APIs tailored to your business needs. Whether you need to connect with third-party services, create a custom backend API, or enhance existing APIs, I deliver secure and scalable solutions.
What I Offer
✅ Custom API Development: APIs built for your unique requirements using Python (Django/Flask).
✅ Third-Party API Integration: Seamless integration with external services like payment gateways, CRMs, and social platforms.
✅ RESTful & GraphQL APIs: Providing clean and well-documented APIs for smooth communication between systems.
✅ Authentication & Security: Implementing OAuth, JWT, and API key-based authentication to secure your data.
✅ CRUD Operations: Setting up endpoints for creating, reading, updating, and deleting data (CRUD).
✅ Optimization & Performance: Fine-tuning APIs to handle high traffic with low latency.
✅ Documentation: Clear and comprehensive API documentation (Swagger/OpenAPI).
Let’s work together to create APIs that enhance your applications and streamline your processes.
What I Offer
✅ Custom API Development: APIs built for your unique requirements using Python (Django/Flask).
✅ Third-Party API Integration: Seamless integration with external services like payment gateways, CRMs, and social platforms.
✅ RESTful & GraphQL APIs: Providing clean and well-documented APIs for smooth communication between systems.
✅ Authentication & Security: Implementing OAuth, JWT, and API key-based authentication to secure your data.
✅ CRUD Operations: Setting up endpoints for creating, reading, updating, and deleting data (CRUD).
✅ Optimization & Performance: Fine-tuning APIs to handle high traffic with low latency.
✅ Documentation: Clear and comprehensive API documentation (Swagger/OpenAPI).
Let’s work together to create APIs that enhance your applications and streamline your processes.
Programming Languages
PythonCoding Expertise
Cross Browser & Device Compatibility, Localization, Performance OptimizationWhat's included
| Service Tiers |
Starter
$60
|
Standard
$110
|
Advanced
$350
|
|---|---|---|---|
| Delivery Time | 4 days | 10 days | 20 days |
Number of Revisions | 2 | 4 | Unlimited |
Design Customization | - | - | - |
Content Upload | - | ||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$5
additional endpoint
(+ 1 Day)
+$10
Post-Deployment Support
(+ 2 Days)
+$50
4 reviews
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IS
Iulian Vlad S.
Jul 29, 2025
FastAPI Policy Creator
AA
Ajibade A.
Jun 26, 2025
Micro-task: Create a Python Script to Optimize SQL Query Execution Time
Excellent freelancer, very capable of almost any task whatsoever. I hope upwork can produce more freelancer like him.
Will definitely work with Ajiboye again.
Will definitely work with Ajiboye again.
AA
Ajibade A.
Jun 17, 2025
FastAPI Backend Application Fixes Needed
I hired Ajiboye to resolve some FastAPI and SQLAlchemy issues, and he delivered flawlessly. Not only did he fix the core problem quickly, but he also went above and beyond by modularizing the codebase for better maintainability and integrating ClaudeAI into the app seamlessly.
His communication was clear, turnaround time was incredibly fast, and his technical expertise is top-tier. If you need someone reliable, efficient, and highly skilled in backend development and AI integration, look no further. Highly recommended!
His communication was clear, turnaround time was incredibly fast, and his technical expertise is top-tier. If you need someone reliable, efficient, and highly skilled in backend development and AI integration, look no further. Highly recommended!
GH
Guy H.
Jun 9, 2025
Python And Api Expert Needed To Update An Existing Script To Work With Gemini and Minimax
I had a python script that needed to be edited to work with new tools, as well as to fix functionality that was no longer working. The freelancer reviewed everything ad then gave me a timeline which was agreed upon for the work to be performed.
It was a few days after starting the contract that I heard from him, and then he gave me back a refactored file that was not easily comprehendible. After a few more days of back and forth, it was working okay (4 out of 10 efficiency). After a few more revisions, it got to a 6-7 out of 10, but one major feature that was not working was not fixed.
When I asked about this, he decided that it wasn't in the initial scope (which it was and I pointed out to him in the very first message I wrote to him), but then told me that he figured out the problem and how to fix it, but that because he used the word "preserved" in the initial message, where I just said it needed to work, he claimed that it was out of scope. He then proceeded to tell me that it was working, but when I tested it, it did not work at all.
Because of the lack of feedback for this freelancer when I started the contract, I also gave it to another programmer. The other person was cheaper, faster (got the entire project done before Ajiboye communicated with me), and made it work at a crazy speed.
I would not hire Ajiboye again for any Python jobs, not because I dont think he is skilled enough, but I think the communication, having to go back and forth about fixing things, and then the attitude of what is or isnt in the scope was not worth the hassle.
It was a few days after starting the contract that I heard from him, and then he gave me back a refactored file that was not easily comprehendible. After a few more days of back and forth, it was working okay (4 out of 10 efficiency). After a few more revisions, it got to a 6-7 out of 10, but one major feature that was not working was not fixed.
When I asked about this, he decided that it wasn't in the initial scope (which it was and I pointed out to him in the very first message I wrote to him), but then told me that he figured out the problem and how to fix it, but that because he used the word "preserved" in the initial message, where I just said it needed to work, he claimed that it was out of scope. He then proceeded to tell me that it was working, but when I tested it, it did not work at all.
Because of the lack of feedback for this freelancer when I started the contract, I also gave it to another programmer. The other person was cheaper, faster (got the entire project done before Ajiboye communicated with me), and made it work at a crazy speed.
I would not hire Ajiboye again for any Python jobs, not because I dont think he is skilled enough, but I think the communication, having to go back and forth about fixing things, and then the attitude of what is or isnt in the scope was not worth the hassle.
About Ajiboye
Backend & Cloud/DevOps Engineer | Python, FastAPI, AWS
50%
Job Success
Agbado, Nigeria - 5:01 am local time
Need a backend built right, an existing one debugged, or your cloud setup and deployment sorted out? I design production grade APIs and backend systems in Python (FastAPI, Django, Flask) and Node.js, and I handle the infrastructure side too: containerized deployments, CI/CD pipelines, and monitoring.
My Upwork clients have hired me to build FastAPI services, optimize slow SQL query execution, and untangle tricky FastAPI and SQLAlchemy bugs, fixing the core problem quickly and going beyond the original scope (their words).
What I do:
✅ APIs and backend: REST APIs, authentication (JWT, OAuth2, MFA), background workers (Celery, RabbitMQ)
✅ Databases: PostgreSQL, MySQL, MongoDB, Redis, with query optimization and clean schema design
✅ DevOps and cloud: AWS (ECS Fargate, S3, CloudFront), Terraform, Docker, GitHub Actions CI/CD, Nginx, Linux
✅ Monitoring and reliability: CloudWatch, Grafana, Prometheus, alerting, and rollback strategies
✅ Rescue work: debugging and repairing existing Python and FastAPI codebases
I work best with clients who have a clear goal or a well defined problem. I will scope it, give you a realistic timeline, and deliver. Tell me what you are building or what is broken, and I will outline exactly how I would approach it.
Tech: Python, FastAPI, Django, Flask, Node.js, Express, PostgreSQL, MySQL, MongoDB, Redis, Celery, RabbitMQ, AWS, Terraform, Docker, GitHub Actions, Nginx, Linux, Grafana, Prometheus
Steps for completing your project
After purchasing the project, send requirements so Ajiboye can start the project.
Delivery time starts when Ajiboye receives requirements from you.
Ajiboye works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
Conduct an initial consultation to understand your project needs, business goals, and API specifications and review any documentation or existing systems.
API Design
Define the structure of the API endpoints, data models, and authentication methods and share the proposed design (e.g., endpoint list, data schema) for your approval.