Karl Neyvaldt
Director Of Engineering at Meltwater
Halland County, Sweden
Summary
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SeniorKarl Neyvaldt is a Director of Engineering with 10+ years building and leading teams that operate massive distributed search systems, currently shaping Elasticsearch platform strategy and performance at Meltwater. He combines hands-on JVM development and microservices experience with technical leadership—managing a 700+ node Elasticsearch fleet storing petabytes of data and handling thousands of queries per minute. Skilled in architecting NoSQL and big data pipelines, CI/CD, cloud migrations (AWS/terraform) and reactive design, he bridges stakeholder strategy and low-level tuning to deliver scalable, reliable search-as-a-service. Known for coaching teams, driving culture change, and evangelizing continuous learning, he also explores vector search and LLM integrations to evolve analytics capabilities. An engineer who still dives into code and performance tuning, Karl’s rare mix of operational ownership and deep search expertise makes him a go-to problem solver for large-scale information retrieval systems.
10 years of coding experience
16 years of employment as a software developer
English
Stackoverflow
3reputation
339reached
0answers
1question
Github Skills (54)
compose9
java9
kotlin9
java-client9
rabbitmq9
rxjava9
docker8
knn8
neighbors8
docker-compose8
yaml-configuration8
jvm8
rds7
amazon7
lastpass7
Programming languages (6)
Github contributions (5)
meltwater/kotlin-compose
Sep 2016 - Nov 2021
Docker-compose wrapper for the JVM
Contributions:1 review, 53 commits, 15 PRs in 5 years 2 months
dockercomposeteam-horacekotlinjvm
meltwater/rxrabbit
Oct 2015 - May 2021
RabbitMQ Java client built on RxJava
Contributions:1 review, 73 commits, 11 PRs in 5 years 7 months
rxjavajavarabbitmq-javarabbitmqjava-client
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