Sheet 01 · Index
Scale 1:1 · Rev D
Volodymyr
Chornous.
Senior front-end engineer · Kyiv, Ukraine
I build React and Next.js interfaces for product teams, and I care about the details tickets skip, like focus order and the frame where a list reorders.
Fig. 1Δz 25px
- Based in
- Kyiv, UTC+2/+3
- Works in
- React, Next.js, React Native
- Status
- Open to senior roles
02Selected work
No.ProjectRolePeriod
- 01SportsEngine PlayLive and on-demand video streaming for youth and amateur sports, with 120K+ active users and about 3.8M sessions a month.Front-end owner: web, admin and mobile2022–now
- 02Rapid ReplayLive streaming, post-production and highlight distribution for youth and high school sports.Front-end web developer2021–2022
- 03ScoreBirdGame management for sports, fed by NeST, a hardware device that streams score and stats data straight from the scoreboard.Front-end web developer2021–2022
- 04MeridianA meal planner that assembles your week from your dietitian's approved plans.Solo: design and build2026
- 05This siteA static Next.js site with typed MDX, Pagefind search and a drawing-sheet design in two themes.Solo: design and build2023–now
03Writing
8 min read
Gemini 4 Argon on the API: 1M output tokens, thinking levels only, and a price that doubles on December 1
Google opened Gemini 4 Argon (gemini-4-argon) to the Gemini API worldwide on October 13, 2026 at $2 input and $10 output per million tokens until November 30. It drops thinking_budget, sampling parameters and explicit caching, adds long decode up to 1,048,576 output tokens, and spends more than twice GPT-6 Astra's output tokens per benchmark task.
- Apache httpd 2.4.71 fixes a critical mod_http2 race that leads to RCE: CVE-2026-119618SecurityRelease Notes
- Modern Web Guidance 1.0: Chrome's agent skills go stable, add a modernize workflow, and pick up Firefox and EdgeAIToolingPerformance
- PostgreSQL 18.7 and friends fix 52 CVEs, end PostgreSQL 14, and ask you to reindexSecurityRelease Notes
- Rust 1.100: the never type is stable, Infallible becomes !, and Cargo can hold back fresh cratesRelease NotesSecurityTooling
04Revisions
- D2026-09Redrew the site as a set of sheetsPaper and Blueprint themes, a generated plate for every post, and a cursor that leaves coordinates behind.
- C2026-06Moved from Astro to Next.js 16Static App Router pages, typed MDX from the repo, and Pagefind search built from the prerendered HTML.
- B2024-01Drew the typewriter logoThe slab wordmark in the header types itself out once per visit.
- A2023-12First version, in AstroFour pages, one of them a blog. It ran for two and a half years.
05 · Contact
Building a React or Next.js product and need a senior engineer?
Send a few lines about the product and the team.
[email protected], copy to clipboardOr use the contact sheet