You will get Backend feature or improvement/upgrade (Python/Django & Java)
Project details
Senior backend engineer and tech lead with 9+ years’ experience building AI‑powered and data‑intensive systems across billing, security, medtech, and transport. In this project, you get a focused backend feature or reliability/performance upgrade for your existing Python/Django or Java application – the kind of work I’ve done for SaaS platforms and enterprise clients handling large data volumes.
Typical results I’ve delivered include cutting search and billing operations from minutes to seconds, reducing incident response times from hours to minutes through better observability, and shipping AI‑driven features such as an automated customer support agent that helped win an innovation award. I work asynchronously, slotting into your existing codebase, and provide clean, well‑tested changes plus a brief handover so your team can maintain everything easily.
Typical results I’ve delivered include cutting search and billing operations from minutes to seconds, reducing incident response times from hours to minutes through better observability, and shipping AI‑driven features such as an automated customer support agent that helped win an innovation award. I work asynchronously, slotting into your existing codebase, and provide clean, well‑tested changes plus a brief handover so your team can maintain everything easily.
Programming Languages
JavaScript, Python, JavaCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $300Frequently asked questions
About Corey
Senior Python Engineer/Tech Lead: Bugs, APIs, Performance
Newbuildings, United Kingdom - 3:18 pm local time
I can help you with:
- Fixing bugs and errors in existing codebases (tracebacks, auth, forms, views, Celery tasks, etc.)
- Designing and implementing or extending REST APIs and background workers
- Performance and reliability issues (slow queries, timeouts, memory/CPU spikes) using tools like logging, metrics, and tracing
- Small backend features and maintenance for SaaS products (billing logic, reporting, user management, permissions)
Experience highlights:
- Designed and delivered AI‑powered solutions for enterprise clients, from rapid proof‑of‑concepts to production deployments.
- Improved system reliability and observability in security tooling platforms, reducing incident response time from hours to minutes.
- Built and scaled billing and data‑processing services for a usage‑based pricing platform handling large data volumes, including new microservices and data architectures.
Steps for completing your project
After purchasing the project, send requirements so Corey can start the project.
Delivery time starts when Corey receives requirements from you.
Corey works on your project following the steps below.
Revisions may occur after the delivery date.
Review requirements & codebase
I review your brief, clarify scope if needed, and set up access to your repo/environment. I identify the best approach and confirm timeline before coding.
Design & implement changes
I design the solution, make the backend changes (feature, fix, or performance work), and add/update tests where appropriate. I keep you updated asynchronously.