About Tanaka
I build modern mobile apps with Swift, Kotlin, Expo and React Native for startups and businesses.
I can help with MVPs, feature development, app redesigns, API integrations, authentication, payments, push notifications, dashboards, and app store launches.
What sets me apart is that I combine development, product thinking, and user experience to build apps that are not just functional, but ready to grow.
English
Native or bilingual
Can work on-site
Nottingham (up to 50km)
Experience
- FreelanceFreelance Mobile DeveloperDIGITAL AND ITMay 2020 - Today (6 years and 1 month)
- Built and shipped cross-platform mobile apps in Expo / React Native for iOS and Android, taking products from concept through development, testing, and release.
- Developed scalable frontend architecture using TypeScript and reusable components to create maintainable, high-quality mobile apps.
- Built and integrated backend systems using Golang, TypeScript, Cloudflare Workers, Supabase, and Firebase, covering APIs, authentication, databases, storage, and server-side business logic.
- Developed complete user flows, including onboarding, login, protected routes, dashboards, forms, payments, notifications, and real-time or backend-connected features.
- Managed build, deployment, and update workflows using EAS Build and modern cloud-based release processes, supporting reliable testing and production launches.
- Worked directly with clients to turn ideas into finished products, owning delivery across planning, UI implementation, backend development, integration, debugging, and post-launch support.
- Chosen AIFull-stack DeveloperFebruary 2019 - February 2020 (1 year)Impact Kept candidate-processing APIs running at ~99.9% uptime so recruiters weren't blocked. Cut time-to-fill by ~20–30% with auto-shortlisting and re-ranking of inbound candidates. Improved Top-5 match precision by ~20–30% using search + an ML re-ranker trained on recruiter clicks. Halved manual CV screening time (~50%) by improving parser accuracy on skills, titles, and dates.What I delivered Built a CV/job parsing service with PII redaction and simple APIs for product teams. Integrated major ATS/job boards (Greenhouse, Lever, Workable, LinkedIn, Indeed) via secure webhooks with retry/idempotency. Added email digests, saved searches, and in-product feedback to create labels and trigger scheduled model retrains. Shipped recruiter dashboards for source quality, stage conversion, and time to-hire. Made Postgres the source of truth with caching, read replicas, and safe migrations to scale reliably.
- CRYPT TRANSFER LIMITEDTechnical Co-FounderJanuary 2017 - February 2019 (2 years and 1 month)London, UKKey transferable skills: real-time data processing• scalable pipeline architecture• API & system integration• cloud deployment◦ data-driven optimization• cross-functional leadership.
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Certifications
- Meta React Native SpecializationMeta
- Microsoft Certified: Azure Data FundamentalsMicrosoft2025