Mohamad R.

Top Rated Plus engineer — $800K+ earned, 100% Job Success, 15 years building enterprise software. I build and modernize SaaS and healthcare platforms for US and European companies, and over the last 2 years I've extended that work into production AI: RAG document search, LLM assistants, and speech-to-text — shipped as real features inside real systems, with security, cost control, and evals, not demos. Two recent examples: EffortlessInsight, an AI-powered compliance platform that reads and classifies regulatory notices, and EffortlessPromo, an AI-driven marketing and CRM integration tool — both in my portfolio below. Clients keep me for years, not sprints: "We retained Mohamad for over 2 years. Will hire again." · "Consistently went above expectations." WHAT I BUILD SaaS & Business Applications • Multi-tenant SaaS products from architecture to production — including an ERP platform serving hundreds of US restoration contractors • Enterprise healthcare platforms with complex workflows, secure APIs, integrations, and large-scale data processing • Business applications for HR, time tracking, payroll, workflow management, and reporting • Stack: C#, Python, Node.js, React, TypeScript, SQL Server, PostgreSQL, and cloud platforms AI Features for Production Systems • LLM features inside real business software: Azure OpenAI, OpenAI, Claude APIs, Semantic Kernel • RAG pipelines with vector search (pgvector) — document processing, extraction, semantic search over your own data • AI-assisted care tooling and speech-to-text transcription shipped on a healthcare platform • See EffortlessInsight and EffortlessPromo in my portfolio for live, working examples • Built like production software, not demos: security, cost control, evals, fallbacks Complex Integrations • Accounting: QuickBooks Desktop & Online (OAuth, Web Connector), Xero, Sage — including an automated sync that cut a client's manual data entry by 80% • Communications: Twilio voice, SMS, WhatsApp, conference calling • Payments: Stripe, PayPal, merchant gateways — platforms processing millions in transactions • Healthcare: FHIR R4, HL7, health-device APIs (Fitbit, Garmin, Withings, Dexcom) • Identity: OAuth 2.0 + PKCE, JWT, SAML, SSO, Azure AD, DigiD Regulated Industries • HIPAA and GDPR-compliant architectures: encryption, audit trails, no PHI in logs, multi-tenant security with AES-256-GCM • 80% test coverage, CI/CD, Azure Key Vault, event-driven architecture on Azure Service Bus I'm also equally comfortable extending or modernizing an existing enterprise codebase — including legacy systems — while new features keep shipping. TECHNICAL STACK C# / ASP.NET Core · Python / FastAPI · React · TypeScript · SQL Server · PostgreSQL + pgvector · Entity Framework · Azure (Functions, Service Bus, Key Vault) · Redis · Docker · SignalR · Azure OpenAI · Semantic Kernel HOW I WORK I build software designed for production—proper error handling, security, performance, and clean code your team can easily maintain long after the project ends. I communicate transparently, surface problems early, and deliver on schedule. You can expect an average response time under 4 hours, with daily availability overlapping US, UK, and European time zones. TRACK RECORD • 15 years building enterprise systems • Top Rated Plus, 100% Job Success • 97 completed projects, $800K+ earned on Upwork • Multiple multi-year retainers with US and European clients NEXT STEP Send me a message describing what you're building — the product, the integration, or the AI capability you want added. I'll tell you honestly whether I'm the right fit and exactly how I'd approach it.