You will get Node.js Backend Performance Tuning & Database Optimization
Rising Talent
Rising Talent
Project details
Is your Node.js backend struggling with traffic? Slow APIs, high server bills, and sudden DB bottlenecks silently kill conversions. If your platform crashes under load, you need a rock-solid architectural overhaul.
I am a Senior Backend Engineer with 10+ years of experience scaling heavy-traffic e-commerce, custom ERPs, and high-load SaaS platforms.
WHAT I FIX:
• Slow APIs & Queries: Eliminating N+1 problems and bad DB indexing.
• High Infra Costs: Optimizing Node.js to lower AWS/DigitalOcean bills.
• Memory Leaks & Crashes: Finding why your server drops dead under peak loads.
• Scalability: Preparing architecture for x10 growth.
PROVEN TRACK RECORD:
• Optimized high-traffic multi-regional e-commerce.
• Scaled complex e-commerce & shipping automation workflows.
• Built heavy data pipelines for real-time analytics SaaS.
HOW IT WORKS:
1. Audit: I analyze your codebase, DB schema, and logs.
2. Execution: I fix queries, set up Redis, and tune indexes.
3. Stress Testing: I verify stability under simulated high load.
4. Handover: Optimized code + 2 weeks of post-delivery support.
Choose your tier or message me to discuss a custom solution!
I am a Senior Backend Engineer with 10+ years of experience scaling heavy-traffic e-commerce, custom ERPs, and high-load SaaS platforms.
WHAT I FIX:
• Slow APIs & Queries: Eliminating N+1 problems and bad DB indexing.
• High Infra Costs: Optimizing Node.js to lower AWS/DigitalOcean bills.
• Memory Leaks & Crashes: Finding why your server drops dead under peak loads.
• Scalability: Preparing architecture for x10 growth.
PROVEN TRACK RECORD:
• Optimized high-traffic multi-regional e-commerce.
• Scaled complex e-commerce & shipping automation workflows.
• Built heavy data pipelines for real-time analytics SaaS.
HOW IT WORKS:
1. Audit: I analyze your codebase, DB schema, and logs.
2. Execution: I fix queries, set up Redis, and tune indexes.
3. Stress Testing: I verify stability under simulated high load.
4. Handover: Optimized code + 2 weeks of post-delivery support.
Choose your tier or message me to discuss a custom solution!
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$600
|
Advanced
$1,300
|
|---|---|---|---|
| Delivery Time | 3 days | 6 days | 12 days |
Number of Revisions | 2 | 3 | 4 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $400
Additional Revision
+$50Frequently asked questions
About OLEKSII
Senior Full Stack Developer | ReactJS | NestJS
Zaporizhia, Ukraine - 5:20 pm local time
Hi, I'm Oleksii. I am a Senior Full-Stack Engineer with 10+ years of hands-on experience architecturalizing, scaling, and optimizing heavy-traffic e-commerce ecosystems, custom ERPs, and automated marketplace workflows.
If you are struggling with legacy system migrations, sluggish data pipelines, or complex third-party API syncs, I am here to bridge the gap between heavy backend logic and pixel-perfect, responsive user interfaces.
What I bring to your project:
• Marketplace Mastery: Built and maintained systems synchronizing real-time data (prices, inventory, discounts) across Amazon, eBay, Walmart, Target, Allegro, and WooCommerce.
• High-Traffic Optimization: Proven track record optimizing data-heavy applications using Node.js, NestJS, and Elasticsearch, ensuring flawless uptime under high user loads.
• End-to-End Product Ownership: From legacy UI migrations (React/Next.js) to server administration, NGINX load balancing, and DevOps automation.
MY CORE TECH STACK:
• Frontend: React, Next.js, Redux, MobX, TypeScript, TailwindCSS, Ant Design, Material UI.
• Backend & DB: Node.js, NestJS, Express, TypeORM, Sequelize, MySQL, Redis, BullMQ, Elasticsearch.
• DevOps & Automation: AWS (CloudFormation, CloudWatch), Docker, NGINX, GitHub Actions, CI/CD.
Whether you need a full-lifecycle product built from scratch or a critical performance bottleneck fixed in your production environment - I deliver clean, maintainable, and business-driven code.
Click "Message" or "Invite" on the top right, and let’s hop on a brief discovery call to map out the solution for your project!
Steps for completing your project
After purchasing the project, send requirements so OLEKSII can start the project.
Delivery time starts when OLEKSII receives requirements from you.
OLEKSII works on your project following the steps below.
Revisions may occur after the delivery date.
Architecture Audit
In-depth analysis of your current codebase, database schema, and infrastructure logs.
Performance Profiling
Identification of bottlenecks, slow queries, and inefficient service patterns.