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$60 USD / hour
Flag of SPAIN
madrid, spain
$60 USD / hour
It's currently 11:52 AM here
Joined July 24, 2005
19 Recommendations

Sergio A.

@sergioes

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5.0 (407 reviews)
8.3
8.3
84%
84%
$60 USD / hour
Flag of SPAIN
madrid, spain
$60 USD / hour
97%
Jobs Completed
100%
On Budget
100%
On Time
28%
Repeat Hire Rate

Agile Project Manager | Lead Developer | Developer

⭐ Roles ⭐ ✅ Agile project manager / engineering manager / lead developer / developer. ⭐ Current availability ⭐ ✅ Part-time. ⭐ Current interests ⭐ ✅ Software development productivity and good practices for small to mid-sized teams. ✅ Challenging projects and learning new things (any role, including developer). ✅ React.js, Angular.js, Nest.js, Express.js, Node.js, MongoDB, cloud (Docker, Kubernetes). ✅ Web3, DeFi, Blockchain, Fintech, Crypto. ⭐ Experience ⭐ ✅ July 2005 – current: Freelancer.com and other markets. Freelance developer. More than 400 projects successfully completed, being one of the top-rated developers. ✅ December 2021 – August 2023: crypto market and modern banking startup. Project manager / engineering manager / technical director directly reporting to the CEO & founders. ✅ March 2017 – May 2020: Power Software Consulting. Lead developer (MEAN stack) for a complex multimedia CMS. ✅ August 2011 – August 2014: [login to view URL]. Project manager. ⭐ Education ⭐ ? 2003-2009 Public University of Spain: Technical Engineer in Telecommunications ([login to view URL]. Degree equivalent in the USA). ⭐ Languages ⭐ ✅ English: ‎ ‎ ‎ ‎ ✍ Writing: native-like. ‎ ‎ ‎ ‎ ✅ Speaking: good. ✅ Spanish: native. ⭐ Other ⭐ ✅ I have been using (GNU?/)Linux as my main OS for many years, and I have a preference for open-source software.

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Portfolio

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Reviews

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Showing 1 - 5 out of 50+ reviews
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5.0
€100.00 EUR
Sergio ha sido rápido, eficaz y resolutivo. Ha resuelto en poco tiempo algo que yo llevaba tiempo. Recomendado 100%
PHP
JavaScript
HTML
Node.js
+1 more
B
Flag of Pedro J.
@BoxCastillo
8 months ago
5.0
£40.00 GBP
They had a good attempt at the project, unfortunately there were some limitations with arm64, but they made a amd64 at least so i am happy.
Linux
UNIX
Computer Science
User Avatar
Flag of James C.
@jamesdavidclarke
9 months ago
5.0
$30.00 AUD
Sergio is a genius! Very helpful and ensured the work requested was completed to my satisfaction. Hope to work with you again
PHP
JavaScript
HTML
Node.js
+1 more
R
Closed User
@redkite0505
1 year ago
5.0
$1,250.00 HKD
He is a good and qualified developer that we want to work with.
Node.js
Typescript
Docker
Docker Compose
User Avatar
Flag of Ho Tin C.
@yelllowadmin
2 years ago

Experience

Lead developer and project manager

Freelancer.com
Jul 2005 - Present
Lead developer and project manager

Agile Software Project Manager

mockupdata.com and mockupscreens.com
May 2011 - Jan 2014 (2 years, 8 months)
See my blog for more details.

Education

Master of Engineering in Telecommunications with specialization in Telematics (Computing applied to Internet and Networks) and intensification in Project Management, Software Engineering and Agile Programming Methodologies

Spain 2002 - 2007
(5 years)

Qualifications

Network Applications Development with Java/J2EE

INEM
2001
Network Applications Development with Java/J2EE.

Publications

http://softwareandoutsourcing.wordpress.com

Me
My professional blog.

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Verifications

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Certifications

SQL_1.png SQL 1 95%
preferredfreelancer-1.png Preferred Freelancer Program SLA 1 94%
spanish-3.png Spanish 3 93%
span-eng.png Spanish to English Translation 1 92%
numeracy_1.png Basic Numeracy 1 92%
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