William Zmiyewski
Software Engineer at Arionkoder
Paraná, Brazil
Summary
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SeniorWilliam Zmiyewski is a seasoned software engineer with 10 years of experience building scalable systems across fintech, telecommunications, retail, and payment solutions from Paraná, Brazil. He has delivered end-to-end products and integrations—especially payroll and payment systems—while regularly conducting code reviews and interviewing candidates, reflecting both hands-on delivery and hiring acumen. His background spans mobile, web, embedded and microservices architectures with stacks including Node.js, Go, Java and containerized deployments, enabling fast, reliable customer-facing platforms. Comfortable working in small, cross-functional teams, he pairs user-facing empathy (meeting users and sales teams) with operational rigor in deployments and CI-driven quality. Currently at Arionkoder, he brings a pragmatic focus on integration-driven features and a track record of improving developer workflows and product outcomes.
10 years of coding experience
13 years of employment as a software developer
Portuguese, English
Stackoverflow
11reputation
8kreached
1answer
0questions
Github Skills (21)
inject10
intellisense10
credit-card10
credit10
language-server-protocol9
language-server9
neovim-plugin9
diagnostics9
neovim9
lua8
golang7
vim7
nvim7
ionic-framework6
go5
Programming languages (5)
Github contributions (5)
zmwilliam/dot-config
Apr 2018 - Mar 2025
My MacOS config files
Contributions:10 PRs, 98 pushes, 10 branches in 7 years
zmwilliam/elixir-learn
Mar 2016 - Oct 2019
Contributions:1 PR, 3 pushes, 1 branch in 3 years 8 months
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