Industry Expert Software Developer - Previously @ IBM, Microsoft Expert Vetted, Top Rated Developer | Scalable, Clean, Documented Code Always Technologies: - MongoDB, ExpressJS, React, NodeJS - React Native, Swift, Flutter - Python, Ruby, Ruby on Rails, PHP - .NET, C#, ASP.NET - OpenAI, LLM, Generative A.I Let's connect and discuss your project.

A software engineer with 17+ years of experience in custom software, web & Mobile app development. I’ve worked across the full Software Development Life cycle (SDLC) as a developer, scrum master, team lead, and manager. I am passionate to delivering robust and quality solutions for SMEs all the way up to the Enterprise level. My approach is collaborative and I always consider the client as a partner for the long term. I am skilled in handling multiple projects and ensuring delivery of each project within the time and cost parameters and experienced in various domain applications: ## Experience : ✓ .NET Desktop (WinForms, WPF: MVVM, MVP); ✓ Windows 8.1 and 10 universal application development (UWP); ✓ Prism, MVVM Light; ✓ Telerik and DevExress frameworks for WinForms and WPF; ✓ Microsoft Dynamics 365 - CRM (Sales, Marketing, Field Services, Project services & Customer Services) ✓ Microsoft Dynamics 365 - Business Central / NAV ✓ Microsoft Dynamics 365 - Finance and Supply Chain / AX ✓ PowerApps (Power Automate, Virtual Agents, Azure Communication Services, PowerBI) ✓ AWS (EC2, Lambda, ECS, Lightsail, S3, RDS, DynamoDB, VPC, Cloud Front, API Gateway, Cognito, CloudWatch, CloudTrail, Rekognition, Polly, Transcibe, Eventbridge) ✓ Azure (Virtual Machines, App Services, Kubernetes, Container, Blob, SQL, CosmosDB, Synapse, Load Balancer, Application Gateway, Azure Machine Learning, Cognitive Services, Bots, Logic Apps, Service Bus, Event Grid, Event Hubs, DevOps, CLI, PowerShell, SDKs, Data Factory) ✓ .NET / .NET Core C#; ✓ TypeScript ✓ ASP.NET MVC / Web API; ✓ ASP.NET Core; ✓ AngularJS ✓ React ✓ Flutter ✓ Kendo UI (JS and ASP.NET MVC wrapper) and DevExtreme; ✓ Bootstrap ✓ WCF and web services; ✓ Rest API design, architecture, implementation, and integration; ✓ SVN and TFS version control systems; - LINQ, Entity Framework, ADO.NET - XML - MS SQL Server, T-SQL - SQLite, MySql - WIXSharp - Windows Forms (WinForms) - CI/CD: Jenkins, Bamboo - Revision control: Bitbucket - Cloud providers: Azure & AWS services - System deployment, configuration, and optimisation - Single point of contact for IT/support-related incidents - Internal infrastructure optimisation - Various Linux debugging tasks - Server health monitoring Web server tech: Nginx, Apache, Haproxy, Varnish Databases: MySQL/MariaDB, MongoDB, MSSQL Revision control: Git Provisioning and app containers: Pipeline, Docker Cloud providers: AWS & Azure Security: iptables, VPN, fail2ban Looking forward to work with you.

📢 Available for New Projects I am a Senior Front End Developer with over than 7 years of commercial experience, focused on building stable, scalable, and high-performance web applications and SaaS platforms. As a dedicated front end web developer, I work with complex web ecosystems where architecture, performance, and long-term maintainability play a critical role. I help businesses turn ideas into reliable web products by applying proven development practices and a deep understanding of React, Next.js, and modern UI/UX design. In fact, as a front end designer, I bridge the gap between aesthetics and functionality to ensure every interface is as intuitive as it is beautiful. 🚀 Core Expertise My primary strength as a front end developer react specialist is based on the React ecosystem, particularly Next.js, Redux, and TypeScript. I design and implement clean architectures, develop pixel-perfect user interfaces, and build scalable SaaS systems that grow alongside business needs. Alongside my expertise as a front end developer, I also have solid Full Stack experience. This allows me to understand how applications interact with backend services and APIs. Thanks to this broader perspective, I make well-balanced technical decisions and deliver end-to-end web solutions that are consistent and reliable. 💼 Industry Experience Throughout my career, I have worked on projects in Fintech, SaaS, EdTech, Healthcare, and E-commerce. Whether contributing to enterprise systems or building custom web applications, I maintain the highest standards expected of a professional front end web developer. I am comfortable working with: Frameworks: React (as a dedicated front end developer react), Next.js. Styling & Design: Figma (acting as your front end designer), Tailwind CSS, Material UI. Infrastructure: AWS, Firebase, Vercel, and CI/CD pipelines. Methodologies: Agile, TDD, and clean version control. I also have experience leading teams and mentoring developers, helping startups deliver efficient web MVPs within tight deadlines. As a lead front end developer, I focus on both code quality and business growth. 🛠 My Go-To Tools: Front End Core: React, Next.js, Redux, TypeScript, JavaScript UI/UX & Design: Figma, Tailwind CSS, Material UI, Styled Components Architecture & Testing: Storybook, Jest, React Testing Library, Cypress Backend Integration: Node.js, GraphQL, REST API, Web Sockets Cloud & DevOps: AWS, Firebase, Vercel, Netlify, Webpack, Git 💬 I am ready to start work on your web project right now. Let’s build something great together - just text me now! no shopify

You need software that ships fast, scales without breaking, and actually reduces the work your team does manually, not just a vendor who takes tickets and writes code. As the CEO of Emvigo, I lead a global team of technologists and creators driven by one mission: to deliver strategic, AI-first digital solutions that accelerate business outcomes. Since 2012, Emvigo has helped 200+ companies across the US, UK, and Europe build AI-powered products, launch MVPs, and modernise their tech infrastructure — on time, on budget, every time. 🏆 Top-Rated Agency 🤝 Average Client Partnership of 5+ Years ✅ AWS Partner | ISO 9001:2015 & ISO 27001:2022 Certified 📊 Clutch Leader | 14+ Years | 500+ Projects Delivered What we build for you: 🤖 AI Agents & Automation → Custom AI agents (CrewAI, AutoGen, OpenAI) that handle multi-step workflows autonomously — so your team focuses on what matters, not repetitive ops 🎙️ AI Voice & Speech → Real-time speech-to-text pipelines, voice bots, and transcription systems (Whisper, Deepgram) — deployed for healthcare, fintech, and SaaS clients ⚡ Workflow Automation → End-to-end process automation, n8n pipelines, API orchestration, intelligent document processing — reducing manual operations by 60–80% 🛒 eCommerce & CMS → WooCommerce, Shopify, Magento, Headless storefronts built to convert ☁️ Cloud & DevOps → AWS, Azure, GCP — migration, CI/CD, cost optimisation, infrastructure as code 📱 Web & Mobile Apps → React, Flutter, FlutterFlow, React Native, Node.js, Laravel — scalable and production-ready 🎨 UI/UX & Product Design → MVPs, design systems, prototyping that validates your idea before you fully build it 🔐 Enterprise Systems → ERP integrations, IAM (Okta, Oracle), BI dashboards, secure APIs Our process: 1️⃣ Discovery Call (30 min) → We understand your goals, constraints, and timeline — no fluff, just clarity 2️⃣ Solution Blueprint → We map out the architecture, tech stack, and delivery plan before a single line of code is written 3️⃣ Agile Sprints → 2-week cycles with demos, so you always know exactly where your product stands 4️⃣ Launch & Scale → We don't disappear after go-live — we support, optimise, and grow with you Why clients choose us: ✔ AI-first thinking — we don't bolt AI on; we architect it in from day one ✔ 4-week MVP delivery model — validated, shippable product faster than most teams write a spec ✔ We speak business, not just tech — every recommendation ties back to your outcomes and budget ✔ One accountable team — no handoffs between sales, delivery, and support. You deal with the people building your product ✔ Certifications that matter — AWS Partner + ISO 9001 & 27001 means your data and infrastructure are in safe hands Industries we serve: 🏥 Healthcare → AI voice, transcription, operational platforms 💰 Fintech → Secure APIs, automation, compliance-ready systems 🛍️ eCommerce & Retail → High-volume storefronts, custom integrations 🏢 SaaS & Tech → Scalable backends, AI features, rapid MVPs 🏗️ Enterprise → ERP, IAM, BI, cloud migration Tech we're fluent in: AI/ML: OpenAI, CrewAI, AutoGen, Whisper, Deepgram, ElevenLabs, LangChain, RAG, Python, n8n Frontend: React, Angular, Vue, TypeScript, D3.js Backend: Node.js, .NET, Laravel, PHP, Python Mobile: Flutter, FlutterFlow, React Native, iOS, Android No-Code / Low-Code: Lovable, Make com, Replit, Base44, Supabase, Bolt, Bubble, Webflow, Zapier, Glide Cloud: AWS, GCP, Azure, Kubernetes, Docker, Terraform DB: PostgreSQL, MongoDB, DynamoDB, Supabase Security: OWASP, Veracode, IAM CMS & eCommerce: WordPress, WooCommerce, Magento, Shopify If you want a partner who thinks strategically about your product — not just a team that codes what you spec — let's talk. 📩 Message us to book a free 30-minute discovery call. We'll review your project and give you an honest plan, no strings attached.

When you work with me, you get full ownership of everything, the code, the repository, and clear documentation so your team can manage it confidently after handover. I'm Dheeraj, a full stack developer and Director of SDS Softwares, based in the UK. I build production-ready SaaS platforms, AI web apps, and custom web applications for startups and growing businesses and I personally lead every project from kickoff to delivery. As a full stack developer, I own the complete build — React.js and Next.js frontends, Node.js and Laravel backends, PostgreSQL and MongoDB databases, REST APIs, payment integrations, and cloud deployment. If it runs a business, I build it properly. Full stack developer. SaaS builder. AI integrator. As a SaaS developer, I architect multi-tenant platforms from scratch — subscription billing with Stripe, role-based access control, team management, admin dashboards, and onboarding flows. I've shipped SaaS MVPs that go from idea to live product with real users, real transactions, and clean, maintainable code. As an AI web app developer, I integrate OpenAI, Claude, and Gemini APIs into production applications — AI-powered chatbots, workflow automation, intelligent dashboards, document processing tools, and custom AI features built directly into your existing platform. Not just an API wrapper — actual AI products that solve real problems. Mobile app developer. Flutter. React Native. As a mobile app developer, I build cross-platform apps for Android and iOS using Flutter and React Native — connected to the same backend systems I build on the web side, so your product works end-to-end. My recent work as a full stack developer includes: → AI-powered career coaching SaaS — OpenAI integration, multi-role access, subscription billing, and a full admin portal → Interactive AWS DevOps training platform — custom LMS, progress tracking, and real-time content delivery → eCommerce and business platforms on Next.js, Shopify, and WordPress with third-party API integrations What you get when you work with me: ✅ Full Stack Web App Development (React.js, Next.js, Node.js, Laravel) ✅ SaaS MVP Architecture and Development ✅ AI Web App Development and AI Integration ✅ Mobile App Development — Flutter and React Native ✅ Admin Dashboards, Business Portals, and Internal Tools ✅ API Development, Stripe Payments, Third-Party Integrations ✅ eCommerce — Shopify and WordPress I don't just write code. I build software that works for real users, scales under real load, and ships on time. Whether you need a new SaaS product, an AI-powered tool, a mobile app, or a full platform rebuild — send me a message and let's scope it out.

👋 Hi, I’m Matt - a senior C/C++ developer and reverse engineer with 15+ years of experience working across Windows internals, low-level systems, and complex software analysis. My core expertise is understanding how software works under the hood. I specialise in reverse engineering applications, analysing Windows internals, debugging complex behaviour, and modifying or extending software at both user-mode and kernel level. Over the years I’ve developed more than 500 desktop applications in C# and C++, built large-scale production systems used by millions of users, and led development teams delivering reliable, robust software for enterprise and financial organisations. I operate comfortably at every layer of the stack - from kernel-mode drivers and memory analysis through to desktop applications, systems development, and backend platforms. 🔒 Windows Systems, C/C++ & Reverse Engineering - Reverse engineering complex applications and software systems - Understanding internal logic and reconstructing application behaviour - Adding or modifying functionality in existing software - Windows kernel driver development (WDM / KMDF) - Static and dynamic analysis (IDA, Ghidra, x64dbg) - Encryption / decryption analysis and algorithm reconstruction - Anti-tampering and protection bypass analysis - Driver debugging, crash dump analysis, BSOD investigation - Syscalls, Windows exceptions, hooks and internal APIs - Virtual / physical memory inspection and manipulation - Assembly, pseudocode and binary analysis - Researching undocumented Windows behaviour - Performance optimisation at system level If it runs on Windows, I can reverse engineer its logic, understand how it processes data, extract or reconstruct functionality, debug system-level issues, and alter behaviour where required - from user-mode applications down to kernel drivers. 🎮 Game Reverse Engineering, Cheats & Anti-Cheat Research I have extensive experience reverse engineering games and building internal and external cheats, mods, and tooling. - Internal and external game cheat development - Reverse engineering game engines and client logic - Working with major anti-cheat systems and protections - Bypassing anti-tamper and protection mechanisms - Game modding and functionality extensions - Memory inspection, injection and runtime analysis This experience requires deep understanding of low-level systems, memory, and complex software protections. ⚙️ Systems Development, Emulation & Embedded Work Alongside Windows systems work, I also work with lower-level system development and emulation. - Systems-level C/C++ development - Emulator and virtualised environment development - Hardware and device communication - Embedded systems development - DSP and signal processing related software - Performance-critical low-level systems 🖥 High-Performance Desktop Applications - High-performance Windows applications in C# and C++ - Real-time data processing systems - Custom internal tooling and automation platforms - Enterprise-grade desktop software supporting large user bases Having built hundreds of desktop systems and applications - from simple console tools to enterprise-grade platforms supporting millions of users - I understand performance, optimisation, maintainability, and long-term stability. 🏗 Backend Systems & Platform Architecture - Scalable backend systems and APIs - Client/server architecture and communication pipelines - Authentication, licensing and secure system design - Database architecture and performance optimisation - Refactoring and stabilising legacy systems I design systems for long-term stability and scale - not fragile MVPs. 👥 Technical Leadership & End-to-End Ownership - Led and managed teams of 3–20 engineers - Architecture ownership from concept to release - Code reviews, mentoring and engineering standards - Direct stakeholder and founder collaboration - Delivery planning and execution I don’t just write code - I take ownership of the outcome. Having worked with major financial institutions and enterprise organisations, I understand what works at scale, how to communicate complex technical decisions clearly, and how to deliver reliable, production-ready systems that stand up to scrutiny. 💡 Commercial & Technical Experience Combined I bring both deep low-level technical expertise and real commercial product experience. I’ve built profitable software businesses, worked with enterprise organisations, and understand the balance between engineering excellence and practical delivery. 🤝 Let’s Connect If you need help reverse engineering an application, analysing complex Windows behaviour, developing C/C++ systems, debugging difficult problems, or extending existing software - I would love to hear from you. I’m always happy to chat through ideas, provide honest technical advice, or take ownership of a project and see it through properly. Hopefully speak soon. Matt

You aren't just looking for someone to write code; you're looking for a partner to build a high-performance digital asset that think beyond just code and aligns to the mission and vision of the project and business. I take pride in thinking about multiple aspects to ensure the tech side is managed correctly. I specialise in taking products from "initial idea" to MVP to robust, enterprise-grade applications that are architected for scale, security, and long-term stability. HOW I DRIVE VALUE FOR YOUR BUSINESS: ✅ Strategic Engineering: As an Investor and Advisor in 15+ startups and a founder who raised $1.5M+, I view your project through a commercial lens. I build technology that is "investment-ready" and architected for growth. ✅ Robust Development: I move beyond the "basic MVP." I build secure, high-performance systems using Flutter, React and AI that can handle complex logic and large user bases without breaking. ✅ AI-Driven Efficiency: I leverage Claude Code and advanced AI to accelerate development cycles without sacrificing the code quality required for a robust production environment. ✅ Academic Foundation: My Software Engineering Degree from a top-tier UK University ensures that your project follows rigorous architectural standards and best practices. CORE CAPABILITIES: 🚀 Scale-Ready Architecture: Transitioning from 0 to 1 while ensuring the foundation can support 1 to 100. ⚙️ Complex Systems & APIs: Expert-level handling of complicated development challenges and deep integrations. 🎨 User-Centric UI/UX: High-fidelity designs that aren't just beautiful, but engineered to convert and retain users. 📈 Product Management: Deep understanding of SaaS best practices to ensure your tech roadmap aligns with your business goals. INDUSTRY EXPERTISE: 🏃‍♀️ Fitness & Health: Scalable wellness platforms. 📅 Events & Booking: High-concurrency scheduling systems. 📹 Video & Media: Performance-optimized streaming applications. 🏠 Marketplaces: Complex multi-sided platforms for people and products. 🥘 Geolocation: Precision map-based services and logistics. 👩‍💻 Enterprise Tools: Robust admin, reporting, and internal productivity suites. THE STARTUP EDGE, THE ENTERPRISE STANDARD Whether you are a growth-stage startup or an established business needing senior architectural support, I bring the speed of a founder with the discipline of a senior engineer. I am a great communicator, honest, and dedicated to solving your most complex technical problems. Let’s discuss how we can build a robust solution for your vision. Send me a message to schedule a call.

⭐️ Top Rated - Top 2% of talent on Upwork 🕒 2,000+ hours on Upwork ✅ 10+ years of experience ✅ 120+ projects delivered ✅ Excelling in delivering Fortune 500-scale projects I help startups and SaaS companies build and scale real products, not just features. Over the last 10+ years, I’ve worked on platforms like Lantern Finance, Success.ai, SpinSports.ai, Medflow, CuddlyNest, Smarter Contact, PinPoint, handling everything from frontend architecture to backend systems, APIs, and third-party integrations. 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: ✅ Full Stack Development ✅ Backend: Node.js, Express, PHP, Laravel, Python, Django, Flask ✅ Frontend: HTML, CSS, JavaScript, Typescript, React, Next, Vue, Nuxt ✅ Mobile App Development: Swift, Swift UI, Kotlin, Java, React Native, Expo, Flutter ✅ Database: MySQL, MongoDB, PostgreSQL, AWS DynamoDB, Firebase, Supabase ✅ API Integration and Development: RESTful APIs, JSON, Fast API, SOAP APIs ✅ Machine Learning and Deep Learning: sklearn, Keras, Tensorflow, AI Agents, Claude, Cursor, n8n, Open Claw, Codex ✅ Cloud & DevOps: AWS, Vercel, Heroku, Docker, CI/CD, Azure, GCP I’m comfortable owning features end-to-end and working closely with product teams to ship fast without breaking things. If you need someone who can jump into your codebase, understand it quickly, and start delivering without hand-holding, I can help. 💬 𝗙𝗥𝗘𝗘 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡: My consultation is 𝗳𝗿𝗲𝗲. Let's schedule an introductory call and discover the possibilities of working together. And even if we don't work together, you will get some tips/ideas that can be helpful to your project. Just click on the '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' button and experience yourself. No matter what challenging idea you have send a message OR invite me to your job so we can schedule a call. 🔑KEYWORDS: React Developer, React Native Developer, Node.js Developer, Cross-Platform App Development, API Integration, SaaS Developer, Backend Developer, Frontend Developer, JavaScript Developer, TypeScript Developer, AWS Developer, Firebase Expert, REST API Developer, MVP Development, iOS Developer, Android Developer, Flutter Developer, In-app purchase, Mobile App Development, Responsive Design, Cross-platform Development, AI Model Trainings, AI App Development, .NET, ASP.NET, AI Agents, n8n, replit, lovable, vibe coding, cursor, claude

$700K+ delivered on Upwork across 145 projects with a 100% Job Success Score. I architect and ship production AI systems, Voice AI agents handling live calls under 2-second latency, computer vision platforms processing 8M+ daily events, and full-stack products running in production for years. What I build: 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗔𝗴𝗲𝗻𝘁𝘀 Real-time voice pipelines combining speech-to-text, LLM reasoning, and natural voice synthesis. I built SloanConnect, an AI telephony platform that automates insurance verification calls end-to-end, navigates IVR systems, holds dynamic conversations with representatives, and scales to hundreds of concurrent calls. Sub-2-second response time, encrypted compliance handling, production-stable. 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗩𝗶𝘀𝗶𝗼𝗻 𝗮𝘁 𝗦𝗰𝗮𝗹𝗲 Lead AI Engineer on two production CV platforms: Adlytic - privacy-safe in-store retail analytics with GDPR-compliant pipelines, heatmaps, and POS integration, and SportsEye - real-time soccer analytics from broadcast feeds with 96% accuracy across player tracking, field mapping, and tactical metrics with zero on-field hardware. 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 Hybrid recommendation engines on PySpark processing 8M+ daily impressions. NLP and sentiment systems wired into live dashboards. Healthcare process automation with HIPAA-aligned data handling. Models built to live in real environments, not notebooks. 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗟𝗟𝗠 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 (𝗖𝗹𝗮𝘂𝗱𝗲, 𝗢𝗽𝗲𝗻𝗔𝗜, 𝗺𝘂𝗹𝘁𝗶-𝗺𝗼𝗱𝗲𝗹) End-to-end AI agents shipped to production: a Shopify + Amazon SP-API customer service agent with order lookup, refunds, returnless-refund policies, Slack/Email approval gates, and Klaviyo sync. Multi-step LLM pipelines with tool use, RAG, function calling, and human-in-the-loop checkpoints. I design these as systems, not single prompts, and I'm comfortable across Claude, OpenAI, and open-weight models depending on what fits the workload. 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗙𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻𝘀 Every AI product needs scaffolding that holds. I've shipped Django/Node/React/Next.js platforms that ran 3+ years in production, Alchemist Real Estate, audIT.app, and a long-running B2B SaaS that grew from MVP to hundreds of users across $195K+ in contracted development. Distributed backends, REST/GraphQL APIs, AWS-native deployment, data pipelines, and the DevOps to keep them stable. 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 As Lead Engineering Architect, I stay hands-on through the whole lifecycle, discovery, architecture, core implementation, deployment, and the long tail. I don't hand off and disappear. Most of my Upwork work is repeat business or long contracts measured in years, not weeks. If you're building a Voice AI agent, a computer vision platform, an LLM-driven workflow, or a full-stack AI product that needs to survive real load - let's talk.

OpenClaw and Claude Code deployment engineer specializing in production-grade, audit-ready rollouts for regulated industries. SOC 2, HIPAA, and GDPR-aligned across AWS, GCP, Azure, DigitalOcean, and on-prem. Native Claude Code, MCP, OpenAI, and Gemini integrations with 99.9% uptime SLAs and sub-1-hour incident response. Most OpenClaw and Claude Code stacks run fine in a demo. Very few survive a real audit, a 2 AM outage, or an enterprise security review. That gap is where I work. WHO HIRES ME: Legal, finance, healthcare, and compliance-bound SaaS teams with data residency and audit-trail obligations. Founders tightening security posture before a funding round, enterprise contract, or SOC 2 / HIPAA review. Engineering leaders inheriting an undocumented OpenClaw or Claude Code stack that breaks silently after model, MCP, or skill upgrades. WHAT I DELIVER: OpenClaw and Claude Code deployments hardened on AWS, GCP, Azure, DigitalOcean, and on-prem: SSL/TLS, encryption at rest, VPC segmentation, environment isolation, and automated backups configured on day one. Docker and container baselines with non-root execution, read-only workspaces, least-privilege tool permissions, and full source-level skill and MCP audits. Penetration testing across 10 to 20+ attack vectors (prompt injection, supply-chain compromise, persistent memory poisoning), delivered with a written Incident Response Playbook. Zero-trust gateway hardening: localhost binding plus private access via Tailscale, WireGuard, OpenVPN, or Cloudflare Tunnel with mTLS. Secrets management pipelines for Claude, OpenAI, and Gemini API keys, OAuth tokens, and messaging credentials, with rotation via HashiCorp Vault, AWS Secrets Manager, or GCP Secret Manager.