Backend software engineer, mostly in Go. From 2024 to 2026 I worked at Batch on the messaging platform: the services that route and deliver push, email and SMS at scale. Before that I spent two years (2022โ2024) as an apprentice building a large-scale web application at Kestio. I hold a master's degree in Web & Information Technologies from the University of Lyon 1.
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tomeshift: translates EPUB books from English to French while preserving their structure. Cheap MT drafts, a translation memory, LLM calls only where a quality estimator asks for them, budget guards, resumable runs.
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gotun: a userspace UTUN tunnel for macOS. Kernel control sockets, ioctl interface setup, TCP/UDP forwarding with connection tracking.
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lib.go.sound: digital sound generation library. Golden-file, fuzz and benchmark testing gated in CI.
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๐ I write about what I learn on dev.to/ececillo
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๐ฌ Ask me about Go, distributed systems, and message delivery pipelines
๐ ย Latest Blog Posts
- Workshop โ๏ธ - Create sound with sin(x) ๐ง
- ๐๏ธ Traveling to the realm of Audio processing and Encoding - Summary
- Understanding how analog signal is captured ๐ผ
๐ ย Connect with me




