You will get help hiring the right React.js engineer for your project
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Top Rated
Project details
What happens if you hire the wrong React engineer?
It’s not just wasted time - it’s buggy features, missed deadlines, and a front-end that never feels right. React may seem easy, but hiring someone who can truly build scalable, maintainable components is a different story.
If you’re not a front-end expert, how can you know who’s actually good?
That’s where I come in.
With 15+ years as a senior engineer and CTO, I’ve hired and placed over 200 developers - including top React talent - for companies like Warner Bros., Nextiva, and YC startups like Jumpcut. I’ve interviewed thousands, built React systems myself, and led code reviews for startups and enterprise teams.
I don’t rely on resumes or buzzwords - I dig into what matters:
◦ Can they build clean, reusable components?
◦ Do they understand hooks, performance, and architecture?
◦ Will their code hold up as your app grows?
This isn’t recruiter guesswork - I’ve been in the code. Let’s make sure you hire the right React engineer the first time.
It’s not just wasted time - it’s buggy features, missed deadlines, and a front-end that never feels right. React may seem easy, but hiring someone who can truly build scalable, maintainable components is a different story.
If you’re not a front-end expert, how can you know who’s actually good?
That’s where I come in.
With 15+ years as a senior engineer and CTO, I’ve hired and placed over 200 developers - including top React talent - for companies like Warner Bros., Nextiva, and YC startups like Jumpcut. I’ve interviewed thousands, built React systems myself, and led code reviews for startups and enterprise teams.
I don’t rely on resumes or buzzwords - I dig into what matters:
◦ Can they build clean, reusable components?
◦ Do they understand hooks, performance, and architecture?
◦ Will their code hold up as your app grows?
This isn’t recruiter guesswork - I’ve been in the code. Let’s make sure you hire the right React engineer the first time.
Programming Languages
JavaScriptWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,000
|
Advanced
$3,000
|
|---|---|---|---|
| Delivery Time | 7 days | 10 days | 31 days |
Number of Revisions | 3 | 3 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$200 - $500
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VF
Victor F.
Jan 25, 2026
30 minute consultation
GB
Gita B.
Jan 5, 2026
30 minute consultation
AM
Andrew M.
Dec 12, 2025
Pay Per Call integration
Cristian was super easy to work with and achieved what we needed him to do smoothly and effectively.
RG
Ryan G.
Oct 16, 2025
WordPress Blog and domain
JJ
Jay J.
Jun 12, 2025
WordPress Divi Website Building and Maintenance Expert Needed
I recently hired Cristian to work on some tasks for my website, and overall I’m quite happy with the results. He was professional, responsive, and made sure to understand what I needed before starting the work. The final outcome was clean and well-executed, and although there’s always room for growth in any project, he handled everything with a positive attitude and delivered on time.
I appreciate his effort and would definitely recommend him to others looking for reliable freelance support. Wishing him all the best as he continues to grow his skills and business — I’ll be happy to work with him again in the future!
I appreciate his effort and would definitely recommend him to others looking for reliable freelance support. Wishing him all the best as he continues to grow his skills and business — I’ll be happy to work with him again in the future!
About Cristian
Call Tracking & Conversion Attribution | Ringba, CallRail, CTM, Invoca
100%
Job Success
Scottsdale, United States - 2:06 pm local time
I work with:
- Pay-per-call and lead-generation companies
- Agencies managing Google Ads & Meta Ads
- Call-center-driven businesses
- Local & national service companies
- SaaS and marketplaces where phone calls drive revenue
I work across all major call-tracking platforms:
CallRail • CallTrackingMetrics (CTM) • Phonexa • Ringba • WhatConverts • Invoca
My strength is connecting everything together so your tracking, reporting, routing, and optimization actually work end-to-end and at scale.
🚀 What I Do
I help agencies, advertisers, and call-driven businesses build the technical infrastructure needed to run profitable, data-driven campaigns:
🔹 Call Tracking & Attribution
- Dynamic number insertion & number pools
- Google Ads & Meta Ads call attribution
- Meta CAPI + Google Offline Conversions
- Click-level attribution (GCLID, FBCLID, UTMs)
- Session-level analytics & cross-platform tracking
- Accurate attribution across click-to-call, extensions, and manual dials
🔹 Integrations & Automations
- Connect call-tracking platforms to CRMs
- (GoHighLevel, HubSpot, Salesforce, Zoho)
- Real-time lead routing & distribution logic
- Custom APIs, webhooks, and automations
- (Zapier, Make, custom scripts)
- Call qualification & quality scoring flows
- Automated reporting and attribution dashboards
🔹 AI Layers
- I add AI on top of call data to turn raw calls into decisions:
- AI call scoring (intent, compliance, quality)
- AI lead filtering & enrichment
- Automated summaries & QA reports
- Predictive signals for campaign performance
- AI that feeds better optimization data back to ad platforms
📊 Results I Deliver
- Accurate call & revenue attribution
- Lower CPA and better ROAS
- Stronger optimization signals for Google & Meta
- Cleaner pipelines and automations
- Less manual work for your team
- Systems that scale without breaking
Whether you’re running pay-per-call, lead gen, or call-driven advertising, bad attribution is expensive. I fix that.
✔️ Why Work With Me
- Expert-Vetted (Top 1% on Upwork)
- 10+ years of experience with complex integrations
- Deep understanding of PPC, performance marketing & call funnels
- Clear communication, fast execution
- Long-term, technical partner mindset
I’m not just a developer - I help you build the technical engine behind your call-driven growth.
Steps for completing your project
After purchasing the project, send requirements so Cristian can start the project.
Delivery time starts when Cristian receives requirements from you.
Cristian works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff Call
We’ll have a video call to review your project, goals, and hiring needs.
Job Post Setup
I’ll help create a compelling job post or join your existing one.