https://jaroslav-savchenko.me Jaroslav Savchenko — full-stack developer and programming teacher. Selected work: production web platforms built with restraint, performance and craft. en https://jaroslav-savchenko.me/work/helios https://jaroslav-savchenko.me/work/helios A real-time observability platform that turns billions of daily events into calm, legible dashboards engineers actually trust. Lead full-stack engineer Wed, 01 Jan 2025 00:00:00 GMT https://jaroslav-savchenko.me/work/lexicon https://jaroslav-savchenko.me/work/lexicon An interactive platform for learning to program in the browser — real code execution, instant feedback, and a curriculum that respects the learner. Founder & engineer Mon, 01 Jan 2024 00:00:00 GMT https://jaroslav-savchenko.me/work/vellum https://jaroslav-savchenko.me/work/vellum A headless editorial CMS built for long-form publications — structured content, fast authoring, and a reading experience that stays out of the way. Full-stack developer Sun, 01 Jan 2023 00:00:00 GMT https://jaroslav-savchenko.me/work/tessellate https://jaroslav-savchenko.me/work/tessellate A design-token pipeline that compiles one source of truth into CSS, Swift, and Android — so a brand stays consistent across every platform. Creator Sat, 01 Jan 2022 00:00:00 GMT