Caitlyn Carmabella Nayeli

Full-Stack Developer & UX Designer

Helsinki, Finland · Contract, remote across the EU · Finnish sole trader (Y-tunnus 3572436-7)

Summary

Full-stack developer and UX designer shipping production platforms end-to-end, mostly on contract as a one-person product team. The past year: 181,000-line enterprise marketplace (12 weeks solo), a full-service TTRPG platform that replaced five separate tools (8 days), and a multiplayer game server patched onto a decade-old engine - all deployed and in use. 8+ years building software, 10+ years in 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 - Present

·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)

·501 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

Hearthheld - Multiplayer Skyrim RP Server

Aug 2026 - Present

·835 commits in 13 days: 71-module Node gamemode, Electron launcher, Discord OAuth identity API, Python plugin tooling
·Patched a forked C++/TypeScript multiplayer mod for a decade-old engine; launcher version-pins and repairs the client stack against Steam auto-updates
·25+ alpha testers signed up; server runs on Hetzner Linux behind a WireGuard overlay

Dredge - Multi-Source Ops-Awareness Board

Jun 2026

·Real-time triage board in Elixir/Phoenix/LiveView: 4 source adapters (GitHub, RSS, database, webhook) behind one behaviour
·Agentic Claude tool-use loop answers questions over the board and builds ingestion pipelines from plain language
·One supervised GenServer per source under a DynamicSupervisor; live at dredgeapp.com

Suumio - AI Companion Journal

2025-2026

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

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

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

Modular Website Framework

2025-2026

·2 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
·2 active payment providers (Visma Pay, Edenred) plus Epassi and Smartum built and gated pending credentials, all 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
·Hearthheld: invite-only multiplayer Skyrim RP server on a pinned fork of SkyMP - 71-module Node gamemode, an Electron launcher that version-pins and repairs the client stack, and a self-hosted Discord OAuth identity API replacing the upstream gateway

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

UX Design Certification, Prime Digital Academy

Apr - Jul 2023

Computer Engineering / CS Coursework, Clemson University

2012 - 2016