Krzysztof Czelusniak
Software Engineer 2 at Caterpillar Inc.
Chicago, Illinois, United States
Summary
👤
Senior🎓
Top SchoolKrzysztof Czelusniak is a Software Engineer with 11 years of experience building high-throughput, data-intensive systems and leading small engineering teams from Chicago. At Caterpillar he led an eight-person team, reviewed code across 40 developers, and helped define coding, testing, and CI/CD standards for a 500-person digital division while engineering pipelines that handled up to 1,000 messages/sec and ETLs for tens of terabytes of telemetry. He combines deep reverse-engineering and debugging skills with backend expertise in databases, RESTful APIs, and performance optimization—skills honed through eight years of independent development of modding and AI tools. Earlier roles span full-stack application work, Salesforce migrations, and automation that saved hundreds of manual hours, reflecting a practical focus on operational efficiency. Known as a fast learner and pragmatic problem solver, he brings a blend of hands-on coding, systems thinking, and process innovation to large-scale telemetry and enterprise systems.
11 years of coding experience
3 years of employment as a software developer
Bachelor of Science, Computer Science, Cumulative GPA: 3.13; Computer Science GPA: 3.46; Senior Year GPA: 3.85, Bachelor of Science, Computer Science, Cumulative GPA: 3.13; Computer Science GPA: 3.46; Senior Year GPA: 3.85 at Bradley University
English, Polish
Stackoverflow
1,257reputation
249kreached
8answers
11questions
Github Skills (160)
aws-serverless10
serverless10
serverless-application-model10
cfn-lint10
serverless-applications10
lambda10
csv10
java10
toml10
aws-sam10
aws-cloudformation10
jfrog-cli10
azure-pipelines-yaml10
spring-boot10
amazon10
Programming languages (10)
Github contributions (5)
kekekekek/LeagueSharp
Dec 2014 - Jan 2015
Contributions:18 commits in 8 days
kczelusniak/HackerRank.com-Questions
Jul 2016 - Aug 2016
Contributions:15 pushes, 1 branch in 1 month
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