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Michał Cieślik

@michacielik

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Software Engineer at CAE building airline applications, including a microservices layer that unified 6+ data sources.

Poland

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At CAE, I designed and developed an airline web application from scratch, improving efficiency during alert situations by up to 30%. I also architected a hexagonal-architecture microservices layer that unified 6+ data sources and cut data-fetch latency by about 40%.

Previously, I modernized an airline reservation system at Sabre by migrating core functionality to a Spring Boot REST API. At Motorola Solutions, I supported CI/CD pipeline maintenance and developed Python automation scripts.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

CAE

Mar 2022 - Present (4 years 7 months)

Designed and developed an airline web application from scratch, improving time efficiency during alert situations by up to 30%. Implemented scalable communication modules and architected a data unification microservices layer, reducing data-fetch latency by ~40%.

Java Spring Boot REST APIs ROS Microsoft Graph API Hexagonal Architecture PostgreSQL Hibernate ArchUnit WireMock Test Containers ExecutorService CompletableFuture Kafka WebSockets

Software Engineer

Sabre

Jul 2021 - Feb 2022 (7 months)

Modernized a legacy airline reservation system by migrating core functionality to Spring Boot REST API, reducing response times. Expanded integration test coverage and maintained CI/CD pipelines with TeamCity.

Java Spring Boot REST APIs WireMock FitNesse TeamCity CI CD

Junior Software Engineer

Motorola Solutions

Jul 2019 - Dec 2019 (5 months)

Supported knowledge transfer during team transition and maintained CI/CD pipelines in Azure DevOps. Developed Python automation scripts to reduce manual tasks and resolved build failures.

Azure DevOps CI CD Python Automation