Muhamad Najjar
Software Engineer DeFi Security at Fireblocks
Israel
Summary
👤
Senior🎓
Top SchoolMuhamad Najjar is a backend-focused software engineer with 9 years of experience building scalable, high-throughput distributed systems and transaction-critical services. Currently on Fireblocks’ DeFi Security team, he designs real-time transaction analysis pipelines and event-driven architectures that detect suspicious blockchain activity before signing, optimizing for sub-3-second responses. He previously shaped large-scale marketplace infrastructure at Fiverr—rebuilt the chat backend with Kotlin and Cassandra, led Zoom integration and Google SSO work, and mentored teammates—after contributing cloud and OpenStack tooling at Nokia. Strong in system design, performance tuning, and parallelism, he combines deep backend expertise with the ability to deliver end-to-end features and independently own critical domains in lean teams. An Israeli-based engineer with a penchant for redesigning flows into maintainable, parallel architectures, he brings practical security-minded thinking to fast-moving fintech and marketplace environments.
9 years of coding experience
4 years of employment as a software developer
Bachelor’s Degree, Computer Science, Bachelor’s Degree, Computer Science at Ben-Gurion University of the Negev
English, Hebrew, Arabic
Github Skills (24)
pagerduty8
api8
csharp7
nodejs7
deduplication7
notification-center7
slack7
code-generation7
opsgenie6
csharp-code6
prometheus-alertmanager6
prometheus-exporter6
monitoring6
dotnet6
javascript6
Programming languages (3)
Github contributions (5)
7mode/nodejs-course
Jan 2020 - Mar 2020
Projects the did through the course for learning nodejs
Contributions:52 pushes, 1 branch in 2 months
didexpressjsjavascriptexpressnodejs
7mode/kotlin-course
Mar 2020 - Jul 2020
Contributions:13 pushes, 1 branch in 4 months
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