I’m looking for an experienced senior full-stack engineer to review an existing CRM system and provide a clear, structured technical assessment of the current codebase.
This is not a build-from-scratch role. The goal is to audit the existing system, review architecture and implementation choices, and highlight risks, concerns, and improvement opportunities across backend, frontend, and data layers.
Tech Stack
Backend: Node.js, Express, TypeScript
Frontend: TypeScript, Tailwind CSS
Database: NeonDB (PostgreSQL)
System Type: Custom CRM platform
Auth: Mix of public and authenticated endpoints
Scope of Review
You will be asked to review the existing codebase and provide written feedback on:
1. Code Structure & Architecture
Project structure and separation of concerns
API design and route organization
Service, controller, and data access patterns
Type safety and TypeScript best practices
2. Backend & API Review
Public vs authenticated endpoint design
Validation, error handling, and middleware usage
Security posture of public endpoints
Rate limiting, abuse protection, and access controls
3. Frontend Review
Component structure and state management
Tailwind usage and maintainability
Frontend/backend contract consistency
4. Database & Data Layer
Schema design and relationships
Query patterns and performance considerations
Data access safety (SQL injection, unsafe queries)
5. Security & Reliability
Authentication/authorization design
IDOR, data exposure, and abuse risks
Secrets management and configuration hygiene
Logging, monitoring, and error visibility
Deliverables
A written technical review (bullet-pointed and structured)
Clear identification of high-risk, medium-risk, and low-risk concerns
Practical, actionable recommendations (no theoretical fluff)
Notes on what is good and should remain unchanged
No code changes are required unless specifically discussed.
Ideal Freelancer
5+ years professional full-stack experience
Strong TypeScript + Node.js background
Experience reviewing or auditing existing codebases
Comfortable with PostgreSQL / NeonDB
Strong understanding of API security and CRM-style systems
Clear written communication (this is a review role)
Professional Drone Services Brochure Category: Advertising, Content Marketing, Content Writing, Copywriting, Digital Marketing, Graphic Design, Lead Generation, Marketing Budget: $15 - $25 USD
07-Feb-2026 23:03 GMT
AI Functional Test Architect Category: AI Agents, AI Consulting, AI Design, AI Development, AI Model Development, AI Research, Test Automation Budget: ₹12500 - ₹37500 INR
WordPress News Site Relaunch Category: AI Content Writing, HTML, PHP, Web Design, Web Development, WordPress, WordPress Design Budget: $30 - $250 CAD
07-Feb-2026 22:56 GMT
Emotional Drama Short Film Category: Cinematography, Creative Writing, Crowdfunding, Film Editing, Film Production, Filmmaking, Script Writing, Video Editing, Video Production Budget: $20000 - $50000 USD
07-Feb-2026 22:54 GMT
Kripto İş Başvurusu Desteği Category: Business Writing, Career Consulting, Content Writing, Cryptocurrency, CV Design, Editing, Keyword Research, Market Research Budget: $250 - $750 USD
Complete Framer Template Overhaul Category: CSS, Framer, Graphic Design, HTML, UI / User Interface, UX / User Experience, Web Design Budget: $30 - $250 USD
07-Feb-2026 22:53 GMT
Chinese to English Translation Category: Business Plan Writing, English (US) Translator, English Translation, Simplified Chinese Translator, Traditional Chinese (Hong Kong), Translation Budget: $30 - $250 CAD
07-Feb-2026 22:49 GMT
Quiz para WordPress com integração no Website Category: CSS, Database Management, HTML, JavaScript, Lead Generation, PHP, Web Design, Web Development, WordPress, WordPress Plugin Budget: €30 - €250 EUR