Available for Contracts & ConsultingHi, I'm Daniel. Senior Full-Stack Engineer.
I architect scalable enterprise systems, build AI-driven platforms, and modernize legacy workflows.
Let's chat about your projectFeatured Work
Selected enterprise-grade engineering projects demonstrating scale, robust processing, and real business results.
Large-Scale Medical Image Processing Pipeline
ChallengeProcessing extremely large healthcare images (high-resolution NDPI formats, often multi-GBs) without causing memory exhaustion in background services, while strictly adhering to healthcare data security standards.
SolutionArchitected a robust, distributed processing pipeline using Node.js and BullMQ. Implemented secure, tile-based image conversion using sharp for memory-safe processing, with efficient streaming to AWS S3, data modeled via Prisma, and strictly protected by Row Level Security (RLS).
Business ImpactDelivered a highly stable, production-ready diagnostic processing system that completely eliminated memory-leak crashes during peak upload periods, enabling healthcare professionals to seamlessly access critical high-resolution scans securely.
Node.jsBullMQAWS S3Prisma
Real-Time AI Voice Interaction Platform
ChallengeBuilding a fluid, natural conversational training platform that orchestrates multiple external AI models (Speech-to-Text, LLM, and Text-to-Speech) concurrently without breaking the illusion of real-time interaction.
SolutionEngineered an event-driven, low-latency gateway using TypeScript and WebSockets. Implemented dynamic audio buffer streaming and complex orchestration logic to harmonize Whisper, Gemini/OpenAI APIs, and TTS services into a single, continuous pipeline.
Business ImpactAchieved a seamless, zero-stutter human-to-AI voice experience. The robust architecture enabled the platform to support continuous, realistic training scenarios without API bottlenecking, significantly enhancing the practical learning outcomes for end-users.
ReactTypeScriptWebSocketLLM APIs
Interactive Experiments
Selected creative-development studies exploring scroll as an interface, live drawing replay, cinematic storytelling, responsive motion and accessible interaction.
Video-driven interactionBuildGo Scroll-Scrub Experience
Creative development01
BuildGo Scroll-Scrub Experience
A continuous 3D camera journey where page scroll controls the video timeline directly, ending inside a responsive BuildGo project workspace.
- Video timeline scrubbing
- Continuous 3D camera journey
- iOS & mobile decoder handling
Vanilla JSHTML5 VideoScroll ScrubAccessibility
Editorial interactionScroll Story Portfolio
Creative development02
Scroll Story Portfolio
A cinematic portfolio concept that turns typography, pacing and sticky scenes into an expressive long-form digital narrative.
- Sticky storytelling
- Responsive editorial motion
- Reduced-motion accessibility
HTMLCSSJavaScriptIntersection Observer
Live product experience03
JoySketch — Drawing Replay Experience
A creative drawing and sharing platform that turns every stroke into a replayable story, then packages it as a lightweight experience that can live on any website.
- Stroke-by-stroke drawing replay
- Shareable artist and artwork pages
- Reusable, lazy-loaded website embeds
CanvasReplayEmbeddable UISocial sharing
External development partner for digital agencies
Flexible, senior-level delivery support for agencies that need trusted technical capacity behind their client work.
Delivery partnershipSenior engineering support that plugs into your team and helps you deliver client work with confidence — from focused builds to short-term delivery capacity.
Discuss agency support → - React / Next.js development
- TypeScript frontend delivery
- AI feature integration
- API integrations
- Overflow development support
- White-label development
- Fixed-scope projects
- Short-term contract support
About Me
Based in the UK, I have spent the last 17+ years architecting and developing enterprise-scale web applications. I partner with technical recruiters, digital agencies, and B2B startup founders to turn highly complex requirements into robust, beautifully performant platforms.
Whether it's modernizing legacy monoliths, architecting massive payload processing data pipelines for healthcare, or designing omnichannel eCommerce architectures, my focus is always on business impact, speed, and exceptional craft.
Core Services
Delivering senior-level engineering leadership across three distinct high-value paradigms.
Enterprise Modernization
Deconstructing legacy architectures into highly maintainable APIs, resolving database bottlenecks, and building secure, production-ready infrastructure for regulated environments.
Node.jsPostgreSQLDockerSupabase
AI & Real-Time Interaction
Crafting modern, interactive user experiences, integrating LLM/AI voice services (STT/TTS), and engineering lightning-fast real-time streaming platforms.
React/Next.jsOpenAI/GeminiWebSocketZustand
Omnichannel eCommerce
Architecting transaction pipelines, custom promotion modules, deep POS system integrations, and multi-tenant Shopify/Magento implementations.
GraphQLMagento 2OpenCartHeadless CMS
Professional History
Over 17 years of leading architectural shifts, optimizing mission-critical systems, and building robust enterprise platforms.
Partnering with international clients, B2B founders, and regulated healthcare organizations to architect scalable platforms, modernize legacy systems, and integrate real-time AI solutions.
- Architected a secure, large-scale background pipeline for medical diagnostic images using **BullMQ & Sharp**, efficiently handling massive NDPI uploads and complex tile-based conversions.
- Engineered a real-time AI language and speech processing platform featuring **WebSockets** and LLM integrations (STT/TTS) to deliver zero-latency interactive experiences.
- Developed a highly secure psychological assessment platform combining 59-question surveys with behavioral risk games, utilizing **Supabase Edge Functions** and rigorous Row Level Security (RLS).
Next.jsNode.jsSupabaseWebSocketBullMQPrisma
Led core software teams in designing high-availability internal management APIs, streamlining omnichannel eCommerce frameworks, and modernizing business-critical workflows.
- Spearheaded the development of a complex internal management system for a **premier Asian sporting institution**, implementing multi-tier approval workflows and granular user behavior tracking.
- Successfully executed the **zero-downtime migration** of legacy APIs to a modern Magento 2 architecture for a major Asian beauty retailer, ensuring seamless platform continuity.
- Established strict enterprise CI/CD test automation pipelines (GitLab/GitHub) alongside comprehensive **Jest/Cypress testing**, significantly reducing runtime regressions.
ReactNode.jsPostgreSQLDockerMagento 2CI/CD
Designed core business pipelines, deep enterprise ERP/POS database integrations, and highly customized commercial modules for high-traffic platforms.
- Architected comprehensive omnichannel ecosystems from scratch, engineered deep **real-time POS**, and maintained highly accurate inventory synchronizations for multi-store networks.
- Customized high-volume promotion modules, dynamic checkout pipelines, and **innovative gamified user experiences** (such as interactive claw machine features) to drive customer retention and sales.
- Developed highly scalable data-feed programs and content delivery systems for major media portals to automate multimedia ingestion pipelines.
PHPJavaScriptMySQLOpenCartREST APIs