You will get a professional Node.js code review with a prioritized action report
Project details
Get a senior-level review of your Node.js codebase — not just style nitpicks, but the issues that actually cost you money: architectural risks, performance bottlenecks, security gaps, and missing test coverage.
WHAT YOU GET
• A prioritized report: every finding ranked Critical / Important / Nice-to-have, so you know what to fix first
• Concrete recommendations with code examples — not vague advice
• Coverage of architecture, performance, security, error handling, and testing
• A 45-minute video walkthrough of the findings (included in Advanced, available as an add-on for other tiers)
WHY ME
I'm a Senior Software Engineer with 5 years building mission-critical, real-time systems running 24/7 in production, where a bad deploy has real-world consequences. I maintain 80%+ test coverage as a standard and led daily code reviews for a 5-engineer Scrum team. I review your code the way I review my own team's: honestly, constructively, with priorities.
Your code stays confidential — happy to sign an NDA. Revisions cover clarifications and additions to the report, not a re-review of a changed codebase.
WHAT YOU GET
• A prioritized report: every finding ranked Critical / Important / Nice-to-have, so you know what to fix first
• Concrete recommendations with code examples — not vague advice
• Coverage of architecture, performance, security, error handling, and testing
• A 45-minute video walkthrough of the findings (included in Advanced, available as an add-on for other tiers)
WHY ME
I'm a Senior Software Engineer with 5 years building mission-critical, real-time systems running 24/7 in production, where a bad deploy has real-world consequences. I maintain 80%+ test coverage as a standard and led daily code reviews for a 5-engineer Scrum team. I review your code the way I review my own team's: honestly, constructively, with priorities.
Your code stays confidential — happy to sign an NDA. Revisions cover clarifications and additions to the report, not a re-review of a changed codebase.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$120
|
Advanced
$250
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 0 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Extra 1,000 lines of code reviewed
(+ 1 Day)
+$30
45-min video call to discuss findings
+$50Frequently asked questions
About Dat
Senior Node.js/NestJS Developer | Real-Time & Event-Driven Systems
Ho Chi Minh City, Vietnam - 6:14 am local time
For the past 5 years, I've built mission-critical systems for the energy industry: platforms where engineers monitor live drilling operations, and where a delayed event or a bad data write has real-world consequences. That environment taught me to write code that is tested (80%+ coverage as standard), observable, and designed for failure - not just code that works on the happy path.
WHAT I CAN DO FOR YOU
- Design and build REST APIs & microservices with Node.js, NestJS, and TypeScript
- Real-time features: Kafka event streaming, WebSockets - thousands of events/second with sub-second latency
- Database design & optimization (PostgreSQL, MongoDB) for large, consistency-critical datasets
- Full-stack delivery with React or Angular when you need frontend covered too
- Code audits: architecture, performance bottlenecks, and test coverage - delivered as a prioritized, actionable report
RECENT WORK
On a real-time drilling monitoring platform, I built the pipeline that streams rig telemetry (torque, pressure, ROP) from Kafka through WebSockets to live dashboards - thousands of events per second at sub-second latency, with anomaly detection that helps engineers catch dangerous conditions before they escalate - cutting engineers' manual review time by ~30%. The system runs 24/7 in production, where downtime isn't an option.
HOW I WORK
Clear communication, honest estimates, no surprises. I ask questions before writing code, commit in small reviewable chunks, and document what I build. I've led a 5-engineer Scrum team and worked onsite with US-based enterprise teams - comfortable in English, async or on calls, with US timezone overlap available.
If you need a backend that won't fall over when it matters, send me a message - I'll reply with concrete questions about your project.
Technologies: Node.js, NestJS, TypeScript, JavaScript, React, Angular, Express, REST API, Kafka, WebSocket, PostgreSQL, MongoDB, Redis, Docker, Kubernetes, AWS (Lambda, S3, EC2, RDS), Azure, CI/CD, Jest, unit testing, microservices, event-driven architecture, system design, Python, ETL, data pipeline
Steps for completing your project
After purchasing the project, send requirements so Dat can start the project.
Delivery time starts when Dat receives requirements from you.
Dat works on your project following the steps below.
Revisions may occur after the delivery date.
Set up
I confirm repo access (read-only is enough) and your main concerns so the review focuses on what matters most to you.
Deep review
Line-by-line pass across architecture, performance, security, error handling, and test coverage.