Chairul Akmal
Software Engineer
mail@chairulakmal.comMobile (JP)Tokyo, JPAvailable immediatelyLinkedInGitHubSummary
Full-stack Software Engineer working in TypeScript (React, Next.js, Vue/Nuxt) and Ruby on Rails. Built and deployed three production web applications in Tokyo: FSM-driven workflows, spaced repetition, server-side validation, and Playwright E2E coverage. Previously a software engineer at Blossom Finance, a regulated US fintech, and a JavaScript instructor at Hacktiv8. AWS Certified Cloud Practitioner; open-source contributor to Nuxt and Ghost.org; Tohoku University alumnus.
Portfolio
Full-stack job application tracker with FSM status transitions enforced server-side. Rails 8 API with JWT auth, Solid Queue jobs, Resend email, and Claude Haiku job-posting pre-fill; paired with a Next.js 16 + TypeScript frontend, Playwright E2E coverage, and continuous deployment on Railway.
Mobile-first JLPT vocab trainer covering 8,800 words N5–N1, with FSRS spaced repetition and a multiple-choice quiz mode. AI example sentences generated offline via Claude Haiku and stored per-word; Next.js 16, Prisma, and PostgreSQL backend; deployed on Railway.
Full-stack JLPT N3 mock exam app with 35 questions across all five vocabulary types in authentic format. Correct answers are withheld server-side, never sent to the client; AI distractors generated offline via Claude tool-use with a per-word validator, and async post-session Sonnet analysis. Building it led to a merged upstream contribution to Nuxt, PR #35697 (see Open Source).
Experience
Built three production web applications end-to-end (see Portfolio list above). Passed JLPT N4; took the N3 exam in July 2026, waiting for the result.
A planned break to study Japanese and prepare the move to Tokyo.
Sole founder and engineer. Designed and shipped a collaborative publishing platform end-to-end in TypeScript, combining markdown authoring with blockchain-based content ownership on Base (L2). Next.js frontend, NestJS backend, Wagmi wallet integration.
Taught the full-stack JavaScript curriculum (React, Vue, Node.js, PostgreSQL, MongoDB, Docker) to multiple cohorts of junior developers. Mentored students 1:1 and ran live code reviews; evaluated capstone projects on architecture, testing, and delivery standards.
Built user onboarding, survey, and feedback flows in full-stack JavaScript on the Blossom Microsukuk™ investment platform. Set up Docker + GitHub Actions CI/CD pipelines; contributed to code review and architecture discussions in a regulated, remote-first fintech team.
Education
Certifications
Technical Skills
Languages
Open Source
- PR #35697: made typescript.tsConfig a shared baseline for all four tsconfigs, with new appTsConfig and serverTsConfig options for per-context overrides. Surfaced while building Kalima (see Portfolio).
- PR #17831: removed the Bluebird dependency and refactored to native JS Promises.
- Issue #17627: fixed Nodemailer delivery from IPv6-only hosts.