Daniel O. TOP RATED
Backend & API engineer · Go, Node.js
Rotterdam, Netherlands · Limited availability
€80/hr
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Backend & API engineer · Go, Node.js with 5 years of experience. I focus on clear communication, realistic estimates and quality work.
Work history & reviews (9)
I will build a fast, well-tested REST API in Go5.0
“Great expertise and patience with our questions. Highly recommended.”
Karim H. · Belgium · 23 Sept 2026
I will build a fast, well-tested REST API in Go5.0
“Solid work. A couple of small fixes were needed, handled quickly.”
Erik J. · Finland · 6 Sept 2026Marketing site rebuild in Next.js5.0
“Very professional. Clear milestones, honest estimates and quality work.”
Pierre L. · France · 27 Aug 2026Checkout flow improvements4.0
“Fast, reliable and easy to work with. The result exceeded our expectations.”
Karim H. · Belgium · 2 Aug 2026
Admin dashboard for operations5.0
“Great expertise and patience with our questions. Highly recommended.”
Erik J. · Finland · 8 Jul 2026API integration with ERP5.0
“Solid work. A couple of small fixes were needed, handled quickly.”
Sofia L. · Sweden · 13 Jun 2026Marketing site rebuild in Next.js5.0
“Proactive and thorough — flagged issues before they became problems.”
Pierre L. · France · 19 May 2026Checkout flow improvements5.0
“Excellent communication and delivered ahead of schedule. Clean, well-documented work. Would hire again.”
Karim H. · Belgium · 24 Apr 2026
Admin dashboard for operations5.0
“Understood the problem quickly and proposed a better solution than we had in mind. Great experience.”
Erik J. · Finland · 30 Mar 2026Services by Daniel
Employment
Backend & API engineer
Adyen · 2017–2021
Education
TU Delft
MSc Computer Science · 2014–2016