Lumen Finance
A real-time wealth dashboard handling 2B+ data points per day, with sub-100ms streaming charts and a buttery 60fps experience.
I'm Saleh — a software engineer crafting performant web, AI and cloud systems for founders and studios worldwide. Calm interfaces, deep engineering, lasting code.



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For the last eight years I've been shipping production software across fintech, healthcare, climate-tech and creative tooling. I work in small teams where every line counts, every interaction is intentional, and every release is something I'd put my name on.
My work sits at the intersection of rigorous engineering and quiet, deliberate design. I write less code that does more, prefer boring technology that scales, and obsess over the milliseconds most people never notice.
Five disciplines, one accountable engineer. From first architecture diagram to last deploy.
Production-grade web applications — from marketing sites to multi-tenant SaaS. Performant, accessible, and built to scale without rewrites.
Service detailsSystem design that survives contact with real traffic. Event-driven, domain-driven, boring where it should be and clever where it counts.
Service detailsPractical AI that ships. RAG pipelines, agentic workflows, eval-driven development — grounded, observable, and cost-aware.
Service detailsInfrastructure as code, observability baked in, costs tamed. AWS, GCP, Cloudflare — whatever fits, never fashion over function.
Service detailsFor teams that need a senior brain in the room. Code reviews, architecture audits, hiring loops, technical roadmaps.
Service detailsA small selection of shipped products. Filter by discipline.
A real-time wealth dashboard handling 2B+ data points per day, with sub-100ms streaming charts and a buttery 60fps experience.
A retrieval-augmented assistant that reads 500k enterprise documents and answers in under 800ms — grounded, cited, and auditable.
A sensor ingestion pipeline processing 4M+ IoT readings/hour across 11 regions. Cost-optimized to 38% of original cloud bill.
A HIPAA-compliant patient companion app with offline-first sync, end-to-end encryption and a 4.9★ store rating across 80k installs.
An award-winning agency website featuring a custom WebGL renderer, magnetic interactions, and 98+ Lighthouse across all metrics.
Real-time voice cloning API serving 12 languages with 240ms median latency, deployed on a single GPU node.
A multi-tenant edge platform deploying serverless functions to 240+ POPs with cold starts under 30ms.
A headless commerce platform for MENA artisans, supporting 3 currencies, 2 languages, and a checkout that converts 3.2× industry baseline.
An offline-first learning app for refugee students, with adaptive curriculum and 1.2M+ lessons served across 7 countries.
Saleh is the rare engineer who cares as much about the milliseconds as the architecture. He shipped our real-time platform in 14 weeks — what we'd estimated as 9 months.
We hired Saleh to build our RAG assistant. Six months later we had four Fortune-500 customers and a hallucination rate of 0.4%. He set the standard for what 'production-ready AI' means.
Our cloud bill was bleeding $84k/month. Saleh cut it to $32k without losing a single feature. His cost-engineering brain is worth the consulting fee ten times over.
The mobile app Saleh built for us has a 4.9★ rating and 71% week-4 retention. Industry average is 23%. He writes code that patients actually love to use.
A handful of packages, templates, and tools used by developers worldwide. Free, MIT-licensed, and maintained on weekends.
A fully customizable portfolio template with internationalization, dark mode, and award-winning design. Built with Next.js + Tailwind.
A Laravel package that adds rate limiting, IP allow/deny lists, and audit logging to any controller with a single trait.
Persistent key-value settings for Laravel apps, with multi-tenant support, caching, and a fluent API.
A minimal CLI tool for managing local dev environments — switch PHP/Node/Python versions per project with one command.
Essays on engineering, architecture, AI and the craft of writing software for a living.
I take on a handful of new engagements each quarter. If your problem is hard, the timeline is real, and you want a thoughtful partner — let's talk.
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