Pekka Heikura
Passionate Hands-on Architect
Vantaa, Finland
Summary
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RockstarPekka Heikura is a hands-on software architect with 14 years of experience designing and delivering cloud-native, scalable web applications from Vantaa, Finland. Currently at Vincit, he combines practical development skills with architecture leadership, focusing on responsive, reliable systems that “just work.” He has deep experience with Microsoft Azure and .NET, and is an active back-end contributor to well-known open-source GraphQL for .NET projects, where he implemented WebSocket transport and strengthened subscription execution. Pekka’s background spans senior engineering, Scrum leadership, and CTO-level responsibilities, giving him a rare mix of technical depth and delivery-oriented management. Colleagues rely on him to simplify complex middleware and subscription workflows while keeping build and test processes robust. He enjoys solving low-level protocol and subscription challenges that improve real-world developer and runtime experiences.
14 years of coding experience
9 years of employment as a software developer
English, Finnish
Stackoverflow
31reputation
1kreached
0answers
1question
Github Skills (14)
net10
asp-net10
graphql10
dotnet10
websocket10
asp-net-core10
csharp10
su10
subscriber10
subscribe10
wordpress-graphql10
wpgraphql10
dotnet-core10
azure-devops6
Programming languages (8)
Github contributions (5)
graphql-dotnet/server
Sep 2017 - Jun 2022
ASP.NET Core GraphQL Server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 3 reviews, 71 commits in 4 years 9 months
Contributions summary:Pekka focused on implementing and refactoring WebSocket functionality for the ASP.NET Core GraphQL server. They introduced WebSocket transport, moved interfaces, simplified endpoint additions, and added query support to the middleware. Key changes involved handling WebSocket connections, message processing, and subscription management. They also made updates to the build process, including adding a cake build script.
graphql-coreaspasp-netgraphql-servernet-core
graphql-dotnet/graphql-dotnet
Sep 2017 - May 2018
GraphQL for .NET
Role in this project:Back-end Developer
Back-end DeveloperContributions:18 commits, 15 PRs, 10 pushes in 7 months
Contributions summary:Pekka primarily contributed to the back-end of the GraphQL .NET project. Their work included the development and refactoring of the `SubscriptionExecuter` class, which is critical for handling GraphQL subscriptions. They also updated unit tests, specifically using `Shouldly` for assertions, and made code adjustments related to value conversions and printing, enhancing the framework's functionality and reliability.
apidotnetgraphiqlgraphqldotnet-core
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