Caitlyn Carmabella Nayeli

Full-Stack Developer & UX Designer

Helsinki, Finland · EU work authorization

Summary

Full-stack developer and UX designer shipping production platforms end-to-end. Six months: 181,000-line enterprise marketplace (12 weeks solo), complete TTRPG platform with live video and embedded VTT (8 days), and a 42-personality AI journaling app — all live, all real users. 8+ years development, 10+ years design and product.

Core Skills

LanguagesTypeScript · JavaScript · HTML · CSS · SQL · Java · C# · Python · C/C++

FrameworksReact · React Native · Expo · Next.js · Node.js · Deno

BackendSupabase · PostgreSQL · PostGIS · REST APIs · WebSockets

PaymentsVisma Pay · Edenred · Stripe · PayPal · Square

AI & MediaClaude API · Agora voice/video · Supabase Realtime

MobileCross-platform iOS/Android/web · EAS · push notifications

DesignFigma · UX research · Usability testing · WCAG AA · i18n

Recent Projects

Bluumo — Enterprise Wellness Marketplace

Nov 2025 – Jun 2026

·Solo: 181,000 lines TypeScript, 120+ screens, 4 user types, 2 active payment providers — built in 12 weeks
·Native iOS/Android + web (Expo EAS); B2B corporate portal; AI concierge (Claude API); 3 live languages (EN/FI/SV)
·Independent security audit Jun 2026; INP improved 1,280 ms → <200 ms

Coyotes and Candles — Full-Service Creative Platform

Jun 2026 (~8 days)

·330 commits: replaced Calendly, Zoom, Patreon, Ko-fi, and Discord with one integrated platform
·Stripe + PayPal subscriptions, Agora live video, embedded VTT (D&D 5e + Shadowrun 4e), community channels

Suumio — AI Companion Journal

2025–2026

·42 Claude-powered personalities, Stripe billing (4 tiers), 32-language automated localization pipeline
·Live on iOS, Android, and web with real paying users

CarmaClouds — Multi-Platform VTT Sync

2024–Present

·Open source (175,000 lines): Chrome/Firefox extensions, Foundry VTT module, Discord bot with 20+ commands
·Custom Meteor DDP client; D&D 5e rule engine covering 50+ edge cases

Dice Cat — Tabletop Gaming Matchmaking

2024–2026

·Live on Google Play; PostGIS optimization cut query time 3–5 s → <500 ms; 10,000+ game database; encrypted messaging

Modular Website Framework

2025–2026

·3 live client deployments in 3–5 hrs each; Lighthouse 95+; 40% bundle reduction; 94.7% image compression

Professional Experience

Contractor / Full-Stack Developer, Capital Six

Jun 2026 – Present

·Web and application development for Capital Six Oy and group companies (Nordic Pulse Impact, Frontline Forum)
·Website audits, feature development, application integrations, and tooling and dashboard work
·JavaScript mentoring and broader software development training for C6 team; 25hr/month retainer

Founding Engineer, Bluumo

Nov 2025 – Present

·Sole engineer and architect on a 181,000-line enterprise wellness marketplace; initial build in ~12 weeks, shipping weekly since
·4 active payment providers (Visma Pay, Edenred, Epassi, Smartum) with server-side MAC/JWT verification; agent-model VAT on GMV tiers; promo, coupon, gift-card, and Wellbeing Allowance credit deduction
·Full corporate registration flow with RLS policies; GDPR compliance (data export, delayed deletions, Swedish legal docs); calendar sync; zero-downtime blue/green deploys
·Full UX ownership across 120+ screens and 4 user types

Freelance Full-Stack Developer & UX Designer, Self-employed

Jul 2023 – Present

·Coyotes and Candles: replaced five separate tools (Calendly, Zoom, Patreon, Ko-fi, Discord) with one integrated creative platform in ~8 days of active development (Next.js 16, Supabase, Stripe, Agora)
·Suumio: production AI journaling app with 42 companion personalities powered by Claude; live on web with Stripe billing; iOS and Android builds in progress; 32-language localization
·Dredge: real-time ops-awareness board in Elixir/Phoenix/LiveView aggregating GitHub, databases, RSS, and webhooks with an AI pipeline-builder layer

UX Designer (Volunteer), MNFurs

Nov 2022 – Dec 2023

Owner / Entrepreneur, Carmabella Creations

2016 – 2023

IT Consultant & Full-Stack Developer, UnVale

2021 – 2022

·Embedded consultant at early-stage startup; shipped features end-to-end in React, JavaScript, and SQL with no PM layer

IT Assistant / Researcher / Developer, Clemson University

2012 – 2016

·Built C# and Java VR applications for Human-Centered Computing research and STEM outreach
·OOP foundations across C, C++, Java, and Python applied in research software and simulations

Education

B.Sc. Information Technology, Metropolia University of Applied Sciences

Aug 2025 - 2026

UX Design Certification, Prime Digital Academy

Apr - Jul 2023

Computer Engineering / CS Coursework, Clemson University

2012 - 2016