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Cesar F.

Cesar F.

Backend software developer primarly focused on the Node.js framework

Software engineer with several years of experience designing and developing software for laboratory information systems as well as its workflows. Currently working in the digital marketing sector, developing and testing software to manage real time bidding, especially for mobile advertising.

🇪🇸Barcelona, Spain$100/hr100% JSSSince Feb 2025
GlobeUpwork

Earnings and projects

MRR
$13k

Last 6 months ÷ 6

World#690 / 412k
🇪🇸Country#5 / 4,023
Revenue, last 30 days
$19k

Last 6 months: $77k

World#291 / 412k
🇪🇸Country#5 / 4,023
Total earnings
$240k

Billed in all: $248k

World#11,451 / 412k
🇪🇸Country#160 / 4,023
Per project
$240k

$39k in the last 6 months

World#15 / 412k
🇪🇸Country#1 / 4,023
Projects, last 6 months
2
0% fixed100% hourly
World#88,922 / 412k
🇪🇸Country#803 / 4,023
Projects in all
1

Across 2 contracts

0% fixed100% hourly
World#360,675 / 412k
🇪🇸Country#3,513 / 4,023

Earnings, last 30 days

$248k+$19.5k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$220k$230k$240k$250kOct 9Oct 24Nov 8

Skill rankings: #1 in 1 skill of 9

Rarest: top 0.29% in JavaScript, of 41,430. Ranked by MRR among everyone on Upwork with the skill.

  1. 1Advertising Networks24 freelancers · 🇪🇸 #1Top 4%
  2. 2InterSystems Caché4 freelancers · 🇪🇸 #1Top 50%
  3. #13Terraform2,052 freelancers · 🇪🇸 #2Top 0.63%
  4. #13Software Architecture & Design1,465 freelancers · 🇪🇸 #1Top 0.89%
  5. #16Kubernetes3,351 freelancers · 🇪🇸 #1Top 0.48%
  6. #40Amazon Web Services7,488 freelancers · 🇪🇸 #2Top 0.53%
  7. #63TypeScript15,967 freelancers · 🇪🇸 #1Top 0.39%
  8. #102Node.js25,795 freelancers · 🇪🇸 #1Top 0.40%