Joshua Sells

St. Michael, MN

Software engineer building high-scale data and event systems.

I love learning and building. Seeing how something works, and why, is a rush. It can be hard, and the understanding is worth the effort. Systems that were designed well and run well give me peace, and I love that technology can make our lives easier and better. That is why I write software. It is my most cherished hobby. I feel pulled to build, and I can't help it.

For work, I design and tune high-scale data and event systems on Google Cloud, and I own them in production. On my own, I build whole systems in Rust, Swift and TypeScript. This site goes deeper on the projects a resume cannot hold.

Joshua Sells

Work

Best Buy, Richfield, MN. I joined as a contractor in June 2021 and converted to full time in March 2022. I work on the data side of the customer journey, where the systems are high volume and have to be right.

Software Engineer (contract) at Best Buy

Jun 2021 to Mar 2022

Joined the customer-journey data team as a contractor and converted to full time in March 2022.

Projects

Skills

Languages
RustGoJavaTypeScriptJavaScriptSwiftPythonKotlinSQLSolidity
Backend and frameworks
AxumTokioMicronautSpringNode.jsExpressNext.jsReactSwiftUIMaterial UITailwind CSS
Google Cloud
Google CloudBigQueryDataflowApache BeamPub/SubCloud RunCloud WorkflowsCloud SchedulerCloud StorageBigtableCloud SQLSecret ManagerFirebase
Data and messaging
PostgreSQLNeonMongoDBRedisRabbitMQStreaming pipelinesBatch ETL
Infrastructure and delivery
KubernetesDockerGitHub ActionsJenkinsCloud BuildWorkload Identity FederationInfrastructure as codePrometheusGitGitHub
Identity and security
OAuth 2.0OpenID ConnectPKCERole-based access controlArgon2idSign in with GoogleSign in with AppleFirebase Auth
Apple platform
SwiftUISwiftDataXcodefastlaneTestFlight
Blockchain
EthereumPolygonBNB ChainUniswap V2 and V3SolidityHardhatGethBlock builders (MEV)
Practices
System designDistributed systemsLoad testingPerformance tuningObservabilityRoot-cause analysisAPI designDesign docsCode review

Certification and education

Google Cloud Certified Professional Data Engineer badge
Google Cloud Certified Professional Data Engineer
Feb 2026 to Feb 2028
Verify on Credly
Concordia University, St. Paul
BS in Computer Science, Aug 2019 to Aug 2021
North Hennepin Community College
AA in Liberal Arts, May 2017

Contact

Want to talk about systems, work or a project? Email me, or find me on LinkedIn and GitHub.