Joel Jonsson
Software Developer at DbVis Software
Stockholm, Sweden
Summary
🤩
Rockstar🎓
Top SchoolJoel Jonsson is a seasoned software developer based in Stockholm with 12 years of experience building and maintaining robust backend systems and developer tooling. He progressed from hands-on engineering roles to staff engineer and development manager at SmartBear, and now contributes to DbVis Software, combining technical depth with team leadership. Joel is an active open-source contributor, notably improving the widely used swagger-parser library by fixing tricky parsing edge cases, reference name conflicts, and test coverage around examples and int64 handling. He holds an M.Sc. in Computer Science from Stockholm University/KTH and brings a pragmatic, detail-oriented approach to API and schema correctness that often surfaces subtle bugs before they reach production.
13 years of coding experience
17 years of employment as a software developer
Secondary School, Science, Secondary School, Science at Danderyds MatematikgymnasiumMaster of Science (M.Sc.), Computer Science, Master of Science (M.Sc.), Computer Science at Stockholm University/KTH Royal Institute of Technology
Stackoverflow
800reputation
79kreached
27answers
2questions
Github Skills (19)
testing10
swagger10
java10
javas10
openapi10
api-design9
open-api-v39
apim9
api-specification9
api9
openapi-documentation9
rest-api9
yaml8
jenkins6
soapui6
Programming languages (3)
Github contributions (5)
swagger-api/swagger-parser
Dec 2016 - Nov 2019
Swagger Spec to Java POJOs
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:18 commits, 16 PRs, 9 comments in 2 years 10 months
Contributions summary:Joel primarily contributed to improving the swagger-parser library. Their work involved fixing bugs related to handling examples within inlined schemas and resolving issues with name conflicts when handling external references. Additionally, they implemented and fixed tests to ensure the library's correct parsing behavior, particularly concerning edge cases like over-quoted string examples and specifications lacking component tags. Their work also addressed issues related to int64 handling.
javaswaggerswagger-parseropenapi-specificationrest
joeljons/camel-test
Mar 2015 - Oct 2019
Testing camel to produce and route MQ messages
Contributions:5 pushes, 1 branch in 4 years 8 months
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