Grégoire Mielle
Senior Software Engineer II at Pennylane
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolGrégoire Mielle is a Senior Software Engineer with 10 years of experience building performant, reliable web products across startups and agencies, currently scaling financial tooling at Pennylane. He combines hands-on full‑stack implementation with product-minded architecture work—scaffolding new services, extracting domains from monoliths, and integrating external APIs to improve user workflows. As a founder of Recontent.app and former PayFit contributor, he blends entrepreneurial initiative with experience delivering payroll, expenses, and localization solutions. Based in Paris, he brings a designer’s sensibility from his freelance and agency background to craft accessible, highly interactive user experiences alongside robust backend systems. Notably, he balances continuous delivery and GitOps practices with a passion for open collaboration and pragmatic performance optimization.
10 years of coding experience
5 years of employment as a software developer
Scientific Baccalaureat, Scientific Baccalaureat at Lycée Carnot, Dijon, FranceMaster's degree Engineering expert in digital communication, Master's degree Engineering expert in digital communication at HETIC
French, English, Spanish
Stackoverflow
11reputation
60reached
1answer
2questions
Github Skills (183)
parser10
expressjs10
markdown10
react-component10
toast10
notification10
theme-ui10
gatsby-theme10
gatsbyjs10
snackbar10
keynote10
designer10
spectacle10
decks10
react10
Programming languages (11)
Github contributions (5)
greeeg/openapi-kit
Dec 2023 - Apr 2024
A set of utilities to generate an API client, types, mocks & react-query hooks for OpenAPI
Contributions:8 releases, 13 reviews, 24 PRs in 3 months
openapiswaggertypescript
greeeg/redefined.cloud
Jul 2020 - Jul 2020
☁ Open source guide re-defining Cloud computing terms & patterns to better understand how it works
Contributions:1 commit, 112 PRs, 137 pushes in 1 day
gcpcloud-computingdevopsdeploymentserverless
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