Dumitru-nicolae Marasoiu
Sr Backend Engineer at Cognite
Bucharest, Norway
Summary
👤
Senior🎓
Top SchoolDumitru-nicolae Marasoiu is a Senior Backend Engineer with 11+ years building low-latency, highly resilient microservices for fintech and core banking, specializing in ledgers, payments and exactly-once processing. He designs systems that routinely handle 10K+ requests/sec with sub-100ms p95 latency and 99.99% uptime, and has led greenfield microservices, shared libraries and financial integrity monitoring services. Deep in JVM stacks (Java 21, Scala, Spring Boot, Reactor) he pairs pragmatic performance work—e.g., Redis pipelining with WATCH/MULTI for optimistic concurrency—with fault-injection driven resiliency and graceful degradation patterns. He contributes to Kafka and writes widely on distributed systems (Quora top writer, InfoQ published), bringing both operational rigor (SLA/SLO/SLI, regulatory compliance) and code-level craftsmanship. Comfortable across cloud-native tooling (Kubernetes, EKS, AWS), event sourcing/CQRS and Kafka Streams, he combines a researchy curiosity with hands-on reliability engineering. Based in Bucharest and Norway, he also runs a Storj storage node and explores storage/ops automation in his spare time.
11 years of coding experience
21 years of employment as a software developer
POLITEHNICA București National University for Science and Technologyliceul tudor vianu
English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (200)
ecosystem10
akka-streams10
concurrent10
rxjava10
rest-api10
high-performance10
jvm10
graph10
spring-boot10
actor-framework10
concurrency10
reactive10
object-oriented-programming10
akka10
rest10
Programming languages (10)
Github contributions (5)
nmarasoiu/Spring-JDBC
Aug 2016 - Jul 2017
Contributions:25 commits, 22 pushes, 3 branches in 10 months
spring-bootoperationspringcrudcrud-application
nmarasoiu/spring-cloud-consul
Mar 2015 - Jul 2015
Contributions:18 pushes, 8 branches in 4 months
spring-bootspringspring-cloud-consulconsuljava
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