Danielius C.

Senior AI Engineer & Architect | iOS & Web Apps | SwiftUI + Next.js

Senior engineer and architect specializing in AI, native iOS, and Next.js SaaS. I build products end-to-end - system design, code, deployment, production operation - and the work ships. Live in production ooddle - AI wellness coach with a streaming LLM chat. Live on the US App Store and web (native iOS + Next.js + Postgres) Guitartopia - gamified membership PWA for guitar learners (Next.js, video pipeline, Stripe subscriptions) TrademarkLens - multi-locale SaaS that searches 140+ trademark registries with AI viability scoring StorePrompts - secure multi-tenant prompt library with subscription billing Custom Odoo ERP for a Lithuania-based manufacturer - finance automation, vendor-bill intake from email, auto-reconciliation, pro-forma invoicing with SAF-T exclusion, Lithuanian statutory XML (SAM, GPM312, KS-02) What I do well AI integration: LLM APIs, streaming chat, intelligent workflows, scoring systems Native iOS: Swift + SwiftUI apps that pass Apple review on the first submission Next.js SaaS: multi-tenant, role-based access, subscription billing, AI integration Custom Odoo ERP modules when a SaaS needs to integrate with a manufacturer's existing systems How I work End-to-end ownership: design, code, deploy, operate Architecture and code your team can take over without a headache Stack AI: DeepInfra, OpenAI-compatible APIs, streaming LLM chat Mobile: Swift, SwiftUI, StoreKit 2 Frontend: Next.js, React, TypeScript, Tailwind CSS Backend: Node.js (TypeScript), Python (FastAPI, Django, Odoo) Database: PostgreSQL (Supabase), Redis Auth & Payments: Supabase Auth, NextAuth, Stripe, Sign in with Apple DevOps: Docker, GitHub Actions CI/CD, self-hosted Linux Most engineers hand you code. I hand you a product - built around the actual problem, ready for real users, and written so your team can take it over without a headache.