30 YEARS OF ENTERPRISE-GRADE ENGINEERING

We build web products with the same rigor I learned inside Yahoo!, IBM, and PayPal.

Most agencies sell templates and timelines. We bring 30 years of product engineering discipline to every project — from MVPs to full-stack platforms. For teams that cannot afford to get it wrong.

Yahoo! → IBM → PayPal → Now working with select teams

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Who we work with

Funded startups that need to ship

You have raised capital and need a product team that can execute at speed without cutting corners on architecture or quality.

Businesses replacing a bad build

Your current app was built cheaply, breaks often, or cannot scale. You need someone who can rebuild it right the first time.

Teams that need senior-level help

You need a fractional CTO, a lead engineer, or a team that can own a product end-to-end without micromanagement.

This is not for people shopping for the cheapest website. It is for teams that need reliable, production-grade engineering.

Enterprise experience, startup speed

“I spent 30 years building products at companies where downtime costs millions and shipping late is not an option. Now I bring that same discipline to every project we take on.”

At Yahoo!, I learned how to build at scale. At IBM, I learned how to architect for reliability. At PayPal, I learned what it takes to ship products that handle real money and real users. That experience is baked into everything we deliver.

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30+
Years

6+
Team members

15+
Satisfied clients

What we build

Full-stack product engineering for web, mobile, and blockchain — from architecture to deployment.

Web Development

Custom websites and web applications built with modern frameworks and best practices.

App Development

Native and cross-platform mobile applications for iOS and Android.

UX/Web Design

User-centered design that creates intuitive and engaging digital experiences.

Smart Contracts

Secure and audited smart contracts for DeFi, NFTs, and blockchain applications.

Blockchain Development

Full-stack blockchain solutions from protocol to front-end integration.

MVPs

Rapid prototyping and MVP development to validate your ideas quickly.

Fractional CTO

Strategic technical leadership and architecture guidance for your team.

SEO/Link Building

Data-driven SEO strategies and quality link building to boost your rankings.

Advertising

Targeted digital advertising campaigns that deliver measurable ROI.

Managed Hosting

Reliable, scalable hosting solutions with 24/7 monitoring and support.

Web Extensions

Browser extensions that enhance productivity and user experience.

AI/Machine Learning

Intelligent solutions powered by cutting-edge AI and machine learning.

Results

We measure success by what ships, how well it runs, and the business impact it creates.

Security / Communications

QryptChat — Quantum-resistant encrypted messaging

Problem: Existing encrypted messaging apps rely on cryptography that will be broken by quantum computers. There was no production-ready messaging platform using NIST-approved post-quantum algorithms with real-time voice, video, and text.

What we built: Built a full Progressive Web App using SvelteKit with ML-KEM-1024 (CRYSTALS-Kyber) key exchange and CRYSTALS-Dilithium signatures. Implemented real-time messaging with typing indicators and read receipts, encrypted 1:1 and group voice/video calls, phone-based authentication, multilingual support, and a Tor-accessible service for maximum privacy.

Outcome: Live and operational at qrypt.chat. Supports multiple languages, works across all devices as a PWA, and delivers quantum-safe encryption that meets NIST standards.

Fintech / Blockchain

CoinPayPortal — Non-custodial crypto payment gateway

Problem: Businesses and AI agents needed a way to accept cryptocurrency payments across multiple blockchains without giving up custody of their funds. Existing solutions required KYC, locked funds in custodial wallets, or only supported a few chains.

What we built: Engineered a non-custodial payment gateway supporting 15+ blockchains including Bitcoin, Ethereum, Solana, and Polygon. Built escrow services with trustless fund holding, a multi-chain web wallet with CLI and REST API interfaces, real-time transaction processing under 1 minute, and an AI agent integration layer so tools like Claude and ChatGPT can autonomously create wallets and process payments.

Outcome: Processing 47,000+ transactions across 1,200+ merchants in 45+ countries with $8.2M+ in volume. 99.9% uptime. Live at coinpayportal.com.

SaaS / Marketplace

SaaSRow — SaaS discovery directory

Problem: Software founders had no easy way to get their products discovered without paying for expensive ad placements or directory listings. Existing directories charged high fees and had slow approval processes.

What we built: Built a full-stack SaaS directory platform with free listing submissions, dofollow backlinks for SEO value, a fast approval pipeline, search and filtering, and category-based discovery. Designed for scale with server-side rendering and optimized for search engine indexing.

Outcome: Live and growing at saasrow.com. Provides a free distribution channel for SaaS founders with real SEO value from dofollow links.

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Selected work

A sample of products we have shipped across web, mobile, blockchain, and AI.

CoinPayPortal

Non-custodial cryptocurrency payment gateway. Accept crypto payments with automatic fee handling, real-time processing, and complete control over your funds.

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QryptChat

Quantum-resistant end-to-end encrypted messaging. Secure your communications with next-generation encryption built to withstand future quantum computing threats.

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PairUX

Real-time screen sharing with simultaneous remote mouse and keyboard control. Like Screenhero, but open source — built for pair programming and remote collaboration.

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SMSHub

One inbox for all your SMS across web, iOS, Android, and desktop. Multi-provider support with a developer-first API for unified messaging.

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brisk.news

AI-powered news summaries and audio briefings. Get caught up on the latest news in minutes with automatically generated summaries and listen-ready audio.

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phonenumbers.bot

Physical SIM cards for AI agents. Rent real SIM cards that work for 2FA and verification on platforms that block VOIP numbers, with SMS and voice API access.

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Latest from our blog

Insights on engineering, product, and building at scale.

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Building Modern Web Applications in 2024

2024-12-15

Explore the latest trends in web development and how modern frameworks are changing the game.

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Blockchain Solutions for Modern Business

2024-11-28

How blockchain technology is transforming business operations and creating new opportunities.

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The Importance of MVP Development

2024-11-10

Why starting with a Minimum Viable Product is crucial for startup success.

Built for AI agents

Install our skill.md into Claude Code or Codex and your agent instantly knows the Profullstack stack, conventions, and the AgentStack coordination module.

Agents & Skills View skill.md

curl -fsSL https://profullstack.com/install.sh | sh

Ready to build something that works?

Book a 30-minute diagnostic call. We will review your project, identify the biggest risks, and tell you honestly whether we are the right fit.

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