Rolf Corneliussen
Senior System Developer at AddSecure
Kongsberg, Norway
Summary
👤
Senior🎓
Top SchoolRolf Corneliussen is a Senior System Developer based in Kongsberg, Norway, with over a decade of experience building mission-critical Java systems and cloud infrastructure. He specializes in reliable, high-availability back-end and streaming architectures, having deployed Pulsar and Kafka-based platforms and built AWS infrastructure with CloudFormation, Terraform and CI/CD pipelines. Rolf contributes to Apache Pulsar upstream, improving performance, memory management and TLS SNI handling—work that underscores his focus on production reliability and efficiency. He also architects security-conscious JavaEE systems and development environments, mentors teams on deployment best practices, and brings an unusual cross-discipline perspective from studies in psychology that informs pragmatic, user-aware system design.
10 years of coding experience
11 years of employment as a software developer
Bachelor's degree, Informatikk, Bachelor's degree, Informatikk at Universitetet i Oslo (UiO)Norges teknisk-naturvitenskapelige universitet
Stackoverflow
1reputation
0reached
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Github Skills (16)
javas10
mtls10
tls1210
messaging10
performance-optimization10
tls1310
java10
libtls10
pubsub9
event-streaming9
netty9
task-queue8
message-bus8
queue8
queuing8
Programming languages (2)
Github contributions (5)
apache/pulsar
Mar 2020 - Oct 2020
Apache Pulsar - distributed pub-sub messaging system
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 commits, 5 PRs, 39 comments in 7 months
Contributions summary:Rolf focused on optimizing the Apache Pulsar messaging system, specifically addressing performance and memory management. They refactored code to use `System.nanoTime()` for more accurate elapsed time measurements and fixed memory leaks related to topic compaction. Additionally, the user enhanced client connection handling by ensuring the use of Server Name Indication (SNI) for TLS enabled connections. These changes indicate a focus on improving the reliability and efficiency of the Pulsar broker and client interactions.
apache-pulsarpubsubpulsarmessagingstreaming
racorn/pulsar
Sep 2020 - Dec 2020
Apache Pulsar - distributed pub-sub messaging system
Contributions:16 pushes, 8 branches in 3 months
pulsarmessaging-systemstreamingapachepub-sub
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