seojeek

seojeek: software that holds up, and ideas that ship fast

Web app

Dayoff

Make a connection. Not a following.

A DM-first social app. Post what you’re up to, and anyone who wants to talk replies to you privately.

Learn moreJoin Dayoff ↗
Dayoff on a laptop and a phone: a feed of short posts, and a private message thread replying to one

Software that holds up, and ideas that ship fast. Sixteen years of building, from search to payments to products made with AI.

Strengths

  • Systems people depend on

    Payments, accounting and operations software that can't go down, for a national fundraising nonprofit, transit operations and regulated retirement enrollment.

  • Leads from architecture to release

    Architect, backend lead, team lead and release manager on multi-year platforms.

  • Built to be found

    SEO since 2010: fast, well-structured sites that search engines and people both read well.

  • Idea to launch, fast

    Dayoff, Folio, Reddzit and Threads Archive, built with AI and shipped.

Latest from the blog

26 Apr 2026

The paradigm shift

From UI/UX to project management to execution and client feedback, vibe coding has changed the game. This applies to not just developers and UI folk, but project managers, and most importantly, clients and business owners.