André Schaffer
Staff Software Engineer at Resurs
Stockholm, Sweden
Summary
👤
Senior🎓
Top SchoolAndré Schaffer is a Staff Software Engineer based in Stockholm with 13 years of experience building resilient, cloud-native systems and growing engineering organizations. He blends hands-on backend craftsmanship—especially event sourcing, CQRS, microservices and domain-driven design—with a Modern Agile mindset and strong emphasis on TDD, DevOps and SRE practices. His career spans senior technical and managerial roles at companies including Spotify, Klarna, Volvo On Demand, Detectify and Visa, where he focused on scaling teams and sustainable organizational growth while leading by example. An active open-source contributor, his event-sourcing/CQRS examples repo reflects a practical approach to domain modeling, refactoring and testable projections. He holds an MSc in Computer Science and is known for pairing deep technical design with a culture of learning and sharing across teams.
13 years of coding experience
16 years of employment as a software developer
Master of Science (MSc) Computer Science, Master of Science (MSc) Computer Science at Universidade Federal de Pernambuco
Portuguese, English, Spanish, Swedish
Github Skills (11)
javas10
junit10
ddd10
cqrs10
event-sourcing10
java10
domain-driven-design10
jtest10
eventstore9
eventbus9
spring-boot8
Programming languages (3)
Github contributions (5)
andreschaffer/event-sourcing-cqrs-examples
Jun 2017 - Aug 2021
Event Sourcing and CQRS in practice.
Role in this project:
Backend Developer
Backend DeveloperContributions:66 commits, 290 PRs, 315 pushes in 4 years 3 months
Contributions summary:André primarily worked on the backend of the project, focusing on event sourcing and CQRS principles. Their contributions include implementing core domain model logic, specifically within the `bankservice` domain, and refactoring existing code to simplify event stream handling and enhance code quality. The user also made improvements to testing practices, added dependencies for code coverage, and refined the read model, focusing on projection updates.
eventsdddevent-sourcingaxoncqrs-es
andreschaffer/slis-slos-examples
Oct 2022 - Nov 2022
SLIs and SLOs in practice.
Contributions:29 commits, 13 PRs, 69 pushes in 1 month
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