Open to opportunities

Krys User

@krysuser

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I build SaaS, mobile wallets, and AI automation across full-stack and blockchain products.

Philippines

Message

What I'm looking for

I'm looking to build full-stack, blockchain, mobile, and AI-native products where I can own delivery from requirements through architecture, release, and production reliability.

I've built products for BankSocial, Demand IQ, MAD Elevator, and freelance founders—from self-custody multi-chain wallets to white-label SaaS used by 200+ businesses and 30,000+ monthly end-users.

At BankSocial, I built Wallet 2.0 in Flutter for Bitcoin, Ethereum, BSC, Polygon, and Hedera, including secure multi-wallet flows, staking, WalletConnect, KYC-gated fiat purchase, and recovery features for iOS and Android releases. At Demand IQ, I delivered React, Django, Next.js, and AWS/Azure systems that powered contractor funnels, financing, scheduling, attribution, and AI-enabled lead experiences.

I also build AI-native automation, Solana launchpad and trading tooling, and multi-platform products with reliable CI/CD, testing, monitoring, secure access controls, and production support.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack & Blockchain & AI Automation Developer

Current

Freelance

Oct 2024 - Present (1 year 10 months)

Developed AI-native automation and blockchain tools for clients, including a Real Estate CRM automation and a Solana Token Launchpad. Built multi-platform products with React, Next.js, Node.js, and Solidity, and managed full product cycles from requirements to deployment.

React Next.js TypeScript Node tRPC SQL Supabase OpenAI Make.Com Solana Solidity Jito GitHub Actions Vercel AWS Azure MongoDB Agile Jira

Mobile & Blockchain Developer

BankSocial

Jul 2023 - Sep 2024 (1 year 2 months)

Built BankSocial Wallet 2.0, a self-custody multi-chain wallet for Bitcoin, Ethereum, BSC, Polygon, and Hedera, with features like staking, WalletConnect, and KYC. Implemented secure storage, biometrics, and recovery mechanisms, and managed CI/CD pipelines for App Store and Google Play releases.

Flutter Dart Bitcoin Ethereum BSC Polygon BIP 39 WalletConnect Dio Get_it SQLite Hive Firebase Crashlytics Fastlane GitHub Actions SonarQube Jira Agile

Full-Stack Developer

Demand IQ

Apr 2022 - Jun 2023 (1 year 2 months)

Developed a white-label SaaS for home-services contractors using Django, DRF, React, and AWS/Azure, scaling to 200+ businesses and 30,000+ monthly users. Built React portals, integrated financing and scheduling APIs, and implemented CI/CD with GitHub Actions, SonarQube, and Snyk.

Django DRF React Redux Next.js TypeScript Material UI Recoil Chart.Js MySQL AWS Azure Celery Twilio Stripe HubSpot Zapier Jest Cypress Pytest SonarQube Snyk Datadog Sentry Jira Agile

Web & Mobile Developer

MAD Elevator

Feb 2020 - Mar 2022 (2 years 1 month)

Built the MAD Elevator Design Center with web configurators, online store, and mobile apps for contractors to design and order elevator components. Developed PHP/jQuery backend, React frontend, and Android/iOS apps, with CI/CD via Jenkins and Fastlane.

PHP jQuery React Strapi Android Java iOS Objective C Swift SQL Redis Docker Kubernetes AWS Azure Jenkins Fastlane Jira Agile

Software Developer

Guidewire

Jun 2017 - Jan 2020 (2 years 7 months)

Developed client websites on WordPress, Wix, and Shopify, customizing themes and plugins for ecommerce and lead generation. Implemented SEO, caching, and CDN optimizations, and used Git and Jira for Agile project management.