Toomore Chiang
[email protected] | toomore.net | github.com/toomore | linkedin.com/in/wei-chih-chiang-9769178
Profile
Backend engineer with 12+ years building platforms, data pipelines, and internal tools in Python and Go. Shipped product code at Pinkoi (e-commerce) and Appier (ad-tech retargeting and internal platforms), then spent nearly four years at Open Culture Foundation as project technical lead, running cross-organization open source initiatives and bringing Taiwan's open source communities to FOSDEM, OONI, and other international venues. Active in the Ethereum and privacy-tech communities since 2025 (Devconnect ARG, EPS25). Looking for backend, platform, or product engineering roles at startups, OSS / DevTools companies, or remote-friendly product teams; comfortable working in Mandarin and English, and interested in roles with international scope.
Experience
Project Technical Lead, Open Culture Foundation
2022.11 - 2026.09 (3 years 11 months)
Open Culture Foundation is a non-profit in Taiwan advancing open source culture, open data, and digital rights. As project technical lead, I ran cross-organization technical initiatives spanning open source tooling, public research output, and international community partnerships.
Selected work
Bringing Taiwan open source communities to FOSDEM
https://ocf.tw/p/global/fosdem-taiwan-community/
Coordinated a multi-year initiative bringing Taiwanese open source communities to FOSDEM (Europe's largest open source conference). Owned speaker logistics, content curation, and partnership building, increasing international visibility and downstream collaboration with European projects.
OONI Research in Taiwan
Partnered with the global OONI community to deliver internet-censorship and surveillance research in Taiwan; co-published the first local report with findings and recommendations. Translated technical measurement methodology for civil-society stakeholders.
Security Accompaniment Program for Civil Society & Human Rights Defenders
Led front-line, on-site cybersecurity training and implementation for six high-risk civil-society organizations and human-rights-defender groups, using a long-term accompaniment model in place of one-off workshops. Guided each organization to adopt and operationalize day-to-day security processes — including endpoint/device security checks and helping draft and establish internal information-security policies tailored to non-technical teams. The program's curriculum was published openly as SSD for ongoing self-study.
Shield of Self-Defense (SSD) — open security curriculum
https://github.com/ocftw/ssd · https://ssd.ocf.tw
Led the revamp of SSD, OCF's openly licensed (CC-BY 4.0) security curriculum for civil-society organizations: restructured the material into eight chapters (threat modeling, device hardening across iOS/macOS/Windows/Android, authentication, safe browsing, encrypted communication, account and data management, backup, and overseas-travel checklists), rebuilt the site on MkDocs, and set up deployment to ssd.ocf.tw / GitHub Pages. Also built a gamified 3D version of the curriculum (Three.js, with a WebGPU rendering variant) that turns each chapter into an explorable in-world "security ruin" cleared through turn-based quiz battles, with an education-first, no-penalty design.
Free and Open Source Software Localization Project
https://ocf.tw/p/oss_localization/
Built and operated a Weblate-based translation platform — with the supporting testing and deployment infrastructure — enabling translators to complete Traditional Chinese localization of open-source software online. Coordinated translation training, workshops, and community internships across partner projects such as Element (Matrix), IRMA/Yivi, and GOV.UK Notify/Forms.
CSO Digital Defending Handbook
Co-authored a practical digital-defense handbook for civil-society organizations, covering secure browsing, credential management, cloud backup, and DDoS mitigation. Aimed at non-engineering audiences with a focus on actionable guidance.
Senior Backend Engineer II, Appier
2015.10 - 2022.04 (6 years 7 months)
2019.10 - 2022.04, Internal Platform Team
Led the development of MIS-Workspace, an internal employee platform that integrated 6+ enterprise systems — GSuite, SuccessFactors, Slack, Jira, Bitwarden, VPN, and Falcon endpoint security — into a unified directory and provisioning workflow. Automated onboarding/offboarding account provisioning, leave requests, equipment inventory, and administration and finance data exchange with SAP, with simple web interfaces for non-engineering colleagues. Built in Python against each system’s API, with scheduled jobs and automatic retries on Celery and RabbitMQ. Cut finance and administration work that took at least a week down to a single afternoon, and moved IT’s repetitive jobs to scheduled automation. Designed and shipped the employee information page aggregating assets, group memberships, and department metadata across systems, shortening operations and troubleshooting cycles.
2017.09 - 2019.10, Retargeting Team
Owned the Spark-to-bloom-filter data pipeline serving the retargeting audience-inference path. Improved throughput by re-implementing the topic-list × user-session join with Go goroutines. Led the refactoring of the Google Analytics data-sync tool to support Campaign Management's evolving requirements.
2015.10 - 2017.09, Business Intelligence Team
Built a bidirectional sync service between Salesforce and internal campaign systems, replacing manual workflows for BD/AM/CM teams and accelerating deal closure throughput.
Backend Engineer, Pinkoi
2013.03 - 2015.06 (2 years 4 months)
Maintained and shipped new features on the e-commerce platform; built the 「好日推好物」 promotion landing page and supported marketing with EDM campaign tooling (broadcast and segmented sends).
Selected Side Projects
anoni.net — Anonymous Network Community Initiative — 2025-Present
Co-organizer of a community advocacy initiative on personal privacy, campus Tor Relay deployment, and anonymous payments. Maintain the documentation site at github.com/anoni-net/docs (MkDocs Material). Organized a two-day track at COSCUP 2026 in collaboration with the Taipei Ethereum community.
Personal Knowledge & Weekly Digest Pipeline — 2025-Present
Self-hosted FreshRSS → LLM digest → multi-platform publication (Mastodon, WordPress) pipeline using Anthropic / OpenAI-compatible APIs. Includes Radicale (CalDAV) integration for calendar-aware planning automation. Built as a personal productivity system; running in production daily.
toomore.net/note — Personal Tech Blog — 2025-Present
Long-form writing on Ethereum privacy stack, self-hosting, and open source. Selected: "透明之外的安全：Tor 思維如何改變以太坊的隱私設計", "以太坊為何是 DeFiPunk 的主場？".
COSCUP Volunteer & Subscribe — 2020-2025
Built and maintained for 5+ years the volunteer-onboarding platform (github.com/COSCUP/COSCUP-Volunteer, AGPL-3.0) and subscription system (github.com/COSCUP/subscribe, AGPL-3.0) used by COSCUP staff and 7,000+ subscribers. Stack: Flask, Celery, FastAPI, AWS EC2/SES, with GSuite / Mattermost / Telegram integrations.
gogrs — 2015
Go port of the Taiwan stock-data scraper grs; see github.com/toomore/gogrs.
Open Source Communities
- COSCUP (2008-2024) — Volunteered for 17 consecutive years; led the Secretary team for several editions, covering recruitment, accommodation, and on-site coordination. This community connection led to my roles at Pinkoi and Appier.
- FOSDEM (2023-2025) — Coordinated Taiwan community delegations.
- OONI Community — Local research partnership and report co-publication.
- Devconnect ARG 2025 / EPS25 — In-person participation in Ethereum Privacy Stack sessions and BuidlGuidl Builder Bootcamp.
Skills
- Languages: Python, Go (primary). Familiar with TypeScript; learning Solidity.
- Backend & infra: Flask, FastAPI, Celery, RabbitMQ, nginx, Docker, AWS (EC2, S3, SES), MongoDB, Spark, Goroutines.
- Self-hosting & ops: Radicale (CalDAV), FreshRSS, WordPress, Mastodon, deployed on personal Linux infrastructure with CI/CD for content publication.
- Security practice & governance: Hands-on experience guiding organizations to put security into practice — running endpoint/device security checks, establishing day-to-day operational security processes, and drafting internal information-security policies for non-technical teams.
- Cross-org collaboration: Comfortable bridging community, civil-society, and engineering teams; experienced in turning policy or research questions into engineering scope.
- Spoken languages: Mandarin (native), English.
- Active learning: Solidity / Foundry, EVM smart-contract security patterns, AI Agent orchestration with Claude Agent SDK, English technical writing.
Education
I-Shou University — BS, Finance, 2008