- Cyber Security & Penetration Testing: Vulnerability assessment, security auditing, and proactive defense strategies. - Incident Response & Digital Forensics: Post-attack reconstruction, root cause analysis (RCA), and secure system recovery after a breach. - Website Security & Hardening: DDoS & Brute force protection, Cloudflare, Sucuri, WAF, Imunify360. - Self-Hosted AI Automation & Assistants: VPS setup, hardening, and maintenance of n8n, Activepieces, and OpenClaw — build unlimited AI workflows and run your own private AI assistant, fully self-hosted with all data on your server. No per-task fees, no third-party cloud. Security-first configuration (firewall, SSL, sandboxing, backups). - Operating Systems (OS) Administration: Expert in Linux distributions: Ubuntu, CloudLinux, AlmaLinux, Rocky Linux, RHEL, and Debian. - Web Server Management: Advanced configuration and tuning of NGINX, Apache, and LiteSpeed - Website Performance & Speed Optimization: Specialist in Google PageSpeed Insights and GTmetrix (Mobile & Desktop tuning). - Digital Tracking & Analytics: Expert setup of Google Tag Manager (GTM) and Google Analytics 4 (GA4), including custom event tracking and conversion setup for E-commerce. - Hosting & Domain Administration: Migration, WHM/cPanel, StackCP, Webmin, Virtualmin, Cyberpanel. - WordPress & WooCommerce: Website development (Elementor, Divi), maintenance, debugging, and malware removal. - Object Caching & Database Optimization: Redis, Memcached, MySQL/MariaDB optimization. - VPS & Dedicated Servers Configuration: AWS, Google Cloud, Digital Ocean, Hetzner, Contabo, Vultr, etc. - DNS & Email Deliverability: Professional DNS management (SPF, DKIM, DMARC), Cloudflare Email Routing. - Bulk Email Systems: Amazon SES, Mailgun, SendGrid, Postmark, Mautic, Sendy. - Hosting Automation: WHMCS & Upmind (specializing in WHMCS to Upmind migrations). - Content Protection: DMCA protection and SSL management. - Service Excellence: 100% accuracy, fast response, and adjustable to all time zones. Other: Graphic Design: flyer, brochure, magazine, catalog, presentation, logo, font vectorization, preparing Files and Documents for Print (crop mark, trim line, bleed area, RGB to CMYK conversion, PMS Solid colors Pantone), Variable Data, Excel XML, minimalist design, wood engraving mockup, DST embroidery file conversion, Recover Corrupted videos, ads marketing Photo Editing: manipulation, retouching, mockup, product photo editing, removal of background (hair, fur) Video & Audio Editing: crop, noise reduction, warp stabilizer, montage, transitions, effects My Resume: -Disciplined, hard-working, responsible -Used to having high responsibilities and constant improvement -Good at adjusting to the team I'm in -Extremely detailed, efficient, and quality work Education: - Electrical Engineering University of Niš, Serbia Certificates: - TryHackMe – Cyber Security - Cisco CCNA (Network Associate Routing & Switching) - Cisco End User: Network Security - Ultimate AWS Certified Cloud Practitioner - Proxmox VE 6 - Visual and Graphic Design - Adobe Photoshop, Illustrator, InDesign, Premiere, After Effects

Dear returning and new clients, I wish you all a warm welcome. You are just a message, away to boost your business with: ✔️ BACKEND web development problem and issue solving, ✔️ DATABASE querying and administration, ✔️ GUARANTEED A+ code quality following industry standards, ✔️ FAST and RELIABLE delivery and communication on AGREED tasks, ✔️ A RELIABLE and TRUSTWORTHY project manager who meets the client's reasonable deadlines. I am absolutely thrilled to help and guide you in IT technical sphere the best way I know (if you have time, you can also check short intro YouTube video here on my upWork profile, Thank you). I am FULL TIME freelancer with the set of skills, outlined by my clients: ✔️ PERFECT FEEDBACK SCORE (5.0) on ALL contracts AND 100% JOB SUCCESS - for more than a decade on upWork | Elance | oDesk, ✔️ upWork's TOP RATED FREELANCER BADGE since the start of their program, ✔️ POSITIVE attitude in RESOLVING conflicts and HANDLING glitches, ✔️ LIGHTNING fast replies and communication. DEVELOPMENT rules: - I write CLEAN and TESTABLE code, - write TESTS, so I am certain it does NOT break anything (if this is clearly communicated with client, I definitely encourage it highly), - CODE must be ready to DEPLOY at ANY TIME (CURRENT version must be in a WORKING state), - ALWAYS use GIT and BRANCHING, - SEPARATE ENVIRONMENTS for production, staging and local development, - use and TRACK PROGRESS through Jira, Trello, Asana and etc. - CLEAR AND CLEAN COMMUNICATION is an absolute MUST so the DEADLINES are met. For more please be sure to check feedback's, here on my profile page. Thank you in advance for dedicating your valuable time to me. --- BackEnd Web development: - PHP and frameworks - Laravel FrontEnd Web development: Jquery and Frameworks, CSS3, HTML5, Bootstrap, Vue Databases (development and administration): MySQL, MariaDB, MsSQL, PgSQL Amazon Web Services (AWS) Suite - EC2, S3, RDBMS Version control: - GIT - Bitbucket, GitHub - SVN - Tortoise SVN Linux - Ubuntu, CentOS7, Suse, Puppy - Bash Scripts - Docker -

With 18+ years of professional software development experience, I help businesses design, modernize, troubleshoot, and scale complex software systems. Since 2018, I have successfully delivered solutions on Upwork across SaaS platforms, enterprise applications, workflow automation, API integrations, backend systems, and performance optimization. My focus is not just writing code — I help clients solve technical and business problems through architecture, automation, and scalable system design. What I Help Clients With Solution Architecture & Technical Planning SaaS Platform Design (Multi-tenant Systems) Workflow Automation (n8n, APIs, Email & Document Automation) Backend System Design & Optimization Performance Troubleshooting & Root Cause Analysis Legacy System Modernization Database Optimization & Scalability API Integrations & Enterprise Integrations AI-assisted Business Workflows Technical Discovery & Requirements Engineering What Makes Me Different I specialize in solving difficult technical problems that other developers struggle to diagnose. Many clients hire me when they need: architecture guidance, production issue troubleshooting, system redesign, performance optimization, automation strategy, or rescue for complex ongoing projects. I combine architecture-level thinking with hands-on implementation experience. Technologies & Platforms Java, Spring Boot, React.js, Node.js, MariaDB, MySQL, PostgreSQL, REST APIs, Docker, Linux, n8n, Automation Workflows, AWS, Git, Microservices, System Integrations If you need a senior technical partner who can understand business requirements and translate them into scalable technical solutions, let’s discuss your project.

⭐ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝟏𝟎𝟎% 𝟓-𝐒𝐭𝐚𝐫 𝐅𝐞𝐞𝐝𝐛𝐚𝐜𝐤 🚀 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞. I help startups, agencies, and growing businesses build scalable web applications, custom CMS platforms, e-commerce systems, APIs, and long-term digital products. My core strength is full stack development 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗣𝗛𝗣, 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗰𝘂𝘀𝘁𝗼𝗺 𝗠𝗩𝗖 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀, 𝗦𝗵𝗼𝗽𝗶𝗳𝘆, 𝗮𝗻𝗱 𝗖𝗠𝗦-𝗯𝗮𝘀𝗲𝗱 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀. I can take ownership of the complete technical flow, from database structure and backend logic to front-end implementation, integrations, deployment, optimization, and ongoing maintenance. If you need someone who can handle complex development, fix existing systems, improve performance, or build a reliable platform from scratch, I can help. ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗙𝗨𝗟𝗟 𝗦𝗧𝗔𝗖𝗞 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 • PHP • Laravel • Node.js • CodeIgniter • CakePHP • Custom MVC Development • REST API Development • Third-Party Integrations • SaaS Platforms • Custom Web Applications • Backend Architecture • Feature Development • Bug Fixing & Maintenance ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗖𝗠𝗦 & 𝗪𝗘𝗕𝗦𝗜𝗧𝗘 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 • WordPress • Shopify • Webflow • Wix • Drupal • Squarespace • WooCommerce • Elementor • Divi • Gutenberg • WP Bakery • CMS Migration • Website Redesign • Theme Customization • Plugin/Extension Customization ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗙𝗥𝗢𝗡𝗧-𝗘𝗡𝗗 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 • React.js • Vue.js • JavaScript • HTML5 • CSS3 • Bootstrap • Tailwind CSS • jQuery • Responsive Website Development • Admin Dashboards • User Interfaces for Web Applications ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘 & 𝗗𝗘𝗩 𝗧𝗢𝗢𝗟𝗦 • MySQL • MongoDB • MariaDB • Git • Bitbucket • Docker Basic • cPanel • WHM • Jira • Trello • Asana ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗜𝗡𝗧𝗘𝗚𝗥𝗔𝗧𝗜𝗢𝗡𝗦 & 𝗣𝗔𝗬𝗠𝗘𝗡𝗧 𝗚𝗔𝗧𝗘𝗪𝗔𝗬𝗦 • Stripe • PayPal • Authorize.net • CRM Integrations • ERP Integrations • Webhooks • Booking Systems • API Integrations • Payment Workflows • Custom Automation ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗪𝗜𝗧𝗛 • Custom Laravel & PHP web applications • Node.js backend development • Full stack SaaS platforms • WordPress development and customization • Shopify and WooCommerce development • CMS migration and redesign • API development and third-party integrations • Admin panels and dashboards • Booking, payment, and CRM systems • Speed optimization and SEO improvements • Bug fixing and feature enhancements • Long-term website and application support ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘 • Strong backend and full stack problem-solving • Clean, scalable, and future-ready code • Ability to work on both new builds and existing systems • Experience with custom platforms, CMS, and e-commerce • Clear communication and quick response time • Business-focused development approach • End-to-end project ownership • Reliable long-term support ━━━━━━━━━━━━━━━━━━━━ 🔹 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗜’𝗩𝗘 𝗪𝗢𝗥𝗞𝗘𝗗 𝗪𝗜𝗧𝗛 E-commerce • SaaS • Healthcare • Real Estate • Education • Logistics • Agencies • Hospitality • Startups • B2B Platforms I believe in building long-term relationships through quality work, transparency, and solutions that genuinely support business growth. Whether you need a custom Laravel application, scalable Node.js backend, CMS website, Shopify/WooCommerce store, API integration, or ongoing technical support, I can help. 📩 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝘄𝗶𝘁𝗵 𝘆𝗼𝘂𝗿 𝗿𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 𝗮𝗻𝗱 𝗜’𝗹𝗹 𝘀𝘂𝗴𝗴𝗲𝘀𝘁 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻.

I build enterprise platforms that last — not prototypes that get rewritten. My longest engagement is 6+ years with a single client, growing from 4 modules to a 9-module field operations platform. That's the kind of work I'm looking for. Recently I've been focused on AI systems engineering — RAG pipelines, LLM API integration, and WhatsApp-based AI agents running in production on SaaS platforms. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 Complex, long-term platforms — not one-off fixes or quick integrations. My clients are typically building something serious: a multi-tenant SaaS, an enterprise operations platform, or a system where AI needs to work reliably in production, not just in a demo. They need an architect who can own the technical direction end to end, communicate clearly with non-technical stakeholders, and stay consistent over years — not months. If you have a well-defined short-term task, I'm probably not the right fit. If you're building something that needs to scale and last, let's talk. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 ✦ Engineering Field Operations (Calgary, Canada): Built a 9-module enterprise platform from the ground up for an automation engineering firm. Modules include commissioning completion, project planning with WBS and SPI tracking, asset lifecycle management, document control with version management, safety management with FLHA workflows, and PDF generation engine. 6+ years. Stack: .NET Core, Angular, SQL Server, Azure, E-Signature API. ✦ AI & Platform Engineering (GeoWise): Architected an event-driven automation layer using Azure Service Bus and engineered a RAG pipeline to parse, index, and retrieve data via LLM APIs with conversational memory state management. Integrated WhatsApp Business API for AI-driven client communication and Sadad payment gateway for Gulf-region bookings. Stack: .NET 8, Next.js, Azure Service Bus, Azure Functions, SQL Server, OpenAI API, WhatsApp Business API. ✦ FinTech (InstaPaid, Denmark): Architected payroll system integrations and core workflows using .NET 8, C#, and Azure Functions for a GDPR-compliant earned wage access platform. Integrated with Danske Bank, Planday, Zenegy, Intect, SameSystems, and Aiia. Stack: .NET 8, React, SQL Server, Azure B2C, Azure Functions. ✦ Healthcare (Amaze PBC): Built and integrated Physician Support, EHR integration, and Prescription Tracking. Stack: ASP.NET Core, SignalR, Azure. ✦ Logistics (RPM Moves): Built 10+ microservices for a North American vehicle logistics platform. Salesforce API, DAT API, Central Dispatch integration, Docker, Kubernetes, Azure DevOps, CI/CD, Elastic Search logging. Stack: .NET Core/5/6/7, React, Redux Toolkit, SQL Server. ✦ E-commerce / SaaS (Holidog, Hector Kitchen): Payment gateway integration (Stripe, Adyen), multilingual platforms, complex subscription management. Stack: .NET Core, Angular, React, MVC. 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 / 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 ✔️ Architectural Patterns: Microservices, CQRS, TDD, DDD, UOW, Repository ✔️ C#, ASP.NET Core / MVC / Web API ✔️ AI Systems: RAG, Vector Search, Semantic Retrieval, Context & State Management ✔️ Data Persistence: Entity Framework, NHibernate, LINQ ✔️ Database: SQL Server, MySQL, MongoDB, RethinkDB, Redis, Elastic Search 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 / 𝐔𝐈 ✔️ Angular (up to v18), ReactJS, Next.js ✔️ TypeScript, JavaScript, jQuery ✔️ State Management: Redux (Ngrx, angular2-redux) ✔️ UI: HTML5, CSS3, Bootstrap, LESS/SCSS, Kendo UI 𝐂𝐥𝐨𝐮𝐝 / 𝐃𝐞𝐯𝐎𝐩𝐬 ✔️ Microsoft Azure: Functions, Service Bus, Queues, Blob Storage, B2C, Document DB ✔️ Containerization: Docker, Kubernetes / AKS ✔️ CI/CD: Azure DevOps, AWS, Octopus, GitHub Actions ✔️ Code Management: Git, GitLab, Bitbucket, TFS 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 MC ID: 13222222 Microsoft Certified Solutions Developer (MCSD) Microsoft Certified Solutions Associate (MCSA) I work best on complex, long-term engagements where architecture decisions matter and consistency of delivery over time is what the client actually needs. If that sounds like your project, let's talk.

𝙄 𝙗𝙪𝙞𝙡𝙩 𝙎𝙖𝙖𝙎 𝙥𝙡𝙖𝙩𝙛𝙤𝙧𝙢𝙨 𝙩𝙝𝙖𝙩 𝙛𝙪𝙣𝙙𝙧𝙖𝙞𝙨𝙚𝙙 $𝟭𝘽+, 𝙧𝙚𝙖𝙘𝙝𝙚𝙙 𝟰𝟱𝟬,𝟬𝟬𝟬+ 𝙪𝙨𝙚𝙧𝙨, 𝙖𝙣𝙙 𝙨𝙝𝙞𝙥𝙥𝙚𝙙 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨 𝙤𝙣 𝙩𝙝𝙚 𝙄𝙣𝙘. 𝟱𝟬𝟬𝟬®. 𝙁𝙤𝙧 𝟭𝟴 𝙮𝙚𝙖𝙧𝙨, 𝙄'𝙫𝙚 𝙙𝙚𝙡𝙞𝙫𝙚𝙧𝙚𝙙 𝙥𝙧𝙤𝙟𝙚𝙘𝙩𝙨 𝙛𝙧𝙤𝙢 𝙈𝙑𝙋 𝙩𝙤 𝙨𝙘𝙖𝙡𝙖𝙗𝙡𝙚 𝙨𝙮𝙨𝙩𝙚𝙢𝙨. 𝙈𝙮 𝙜𝙤𝙖𝙡: 𝙨𝙝𝙞𝙥 𝙧𝙚𝙡𝙞𝙖𝙗𝙡𝙚 𝙥𝙧𝙤𝙟𝙚𝙘𝙩𝙨 𝙛𝙖𝙨𝙩, 𝙖𝙣𝙙 𝙨𝙪𝙥𝙥𝙤𝙧𝙩 𝙮𝙤𝙪 𝙛𝙧𝙤𝙢 𝙞𝙙𝙚𝙖 𝙩𝙤 𝙞𝙣-𝙝𝙤𝙪𝙨𝙚 𝙩𝙚𝙖𝙢. I am not just a developer, but I act as your tech partner, and I know that founders need not just their tasks done, but guidance on what will be best for their project in their situation. Also, I stick to what we agree on, and my payment model is always transparent from start to finish, which is important for both sides. I will help you plan, architect, and ship scalable MVP and SaaS products so you can start your business, and your users will be happy using it. Whether you’re starting from a prototype or stuck scaling, I will provide a clear foundation to launch and grow with support from my team, AEX Soft. 𝙒𝙝𝙖𝙩 𝙄'𝙫𝙚 𝙨𝙝𝙞𝙥𝙥𝙚𝙙: • RallyUp (Nonprofit Fundraising SaaS) - $1B+ processed, 40K req/sec peak, 130K+ users - trusted by American Red Cross, Nike & Make-A-Wish. Built the Claude-powered AI content generator • Boostlingo (Interpretation Services SaaS) - 17,000+ interpreters coordinated daily across hospitals, courts, and law firms in the US. HIPAA-compliant and SOC 2 Type II compliant. • CMOS / ClearMechanic (Automotive SaaS CRM) - 300x growth, 100K+ users, adopted by BMW, Jaguar, and General Motors across 8 countries 𝙃𝙚𝙧𝙚’𝙨 𝙝𝙤𝙬 𝙄 𝙘𝙖𝙣 𝙝𝙚𝙡𝙥: 𝟭. SaaS & Web App Development: I build MVPs and scale SaaS platforms using .NET, React, Next.js, C#, Python/FastAPI, PostgreSQL/MSSQL. 𝟮. Mobile App Development: I utilize React Native, Flutter, and .NET MAUI for cross-platform development, Swift for native iOS, and reuse your APIs across mobile and web platforms. 𝟯. Backend & APIs: .NET/C#, Python/FastAPI, REST/GraphQL, Entity Framework, PostgreSQL, MSSQL, MongoDB, Supabase, Firebase, WebRTC when real-time is required. 𝟰. Frontend Engineering: I use React UI and React/Next.js for dashboards and portals, TypeScript, Vite, Three.js, and Blazor when needed. 𝟱. Payments & Integrations: I integrate Stripe for subscriptions and SaaS billing, and also work with PayPal, HubSpot, ActiveCampaign, Microsoft Dynamics 365, Twilio, WhatsApp, Shopify, WooCommerce, Zapier, ChatGPT/OpenAI. 𝟲. Cloud & DevOps: AWS and Azure, Vercel, CI/CD, monitoring, automate builds and rollouts, keep uptime high, and incidents low. 𝟳. Performance & Maintenance: I can find slow database queries and fix them, add the right indexes, cache frequent requests (e.g., Redis) to cut load times, and ship upgrades without downtime. 𝟴. Product Partnership: I conduct research, create documentation, QA processes, plan roadmaps, provide long-term support, and grow your team as the product scales. 𝟵. Core Stack: .NET + React/Next.js for product builds, Python/FastAPI when it fits. 𝟭𝟬. AI tools: I actively use Claude Code and Cursor for development. Also, I work with Grok, GPT models/OpenAI, and Lovable/Base44/Replit/Anything/v0. 𝙄 𝙬𝙤𝙧𝙠 𝙗𝙚𝙨𝙩 𝙬𝙞𝙩𝙝: 🔹 Startups moving from MVP to product-market fit 🔹 Product teams building or scaling a SaaS platform 🔹 Businesses that want to automate their processes 🔹 FinTech, Automotive, Crowdfunding, Inventory, Events, Food, and other niches 𝙏𝙤𝙤𝙡𝙨 𝙄 𝙪𝙨𝙚: 🔹Backend & Cloud: .NET, C#, Python, Node.js, FastAPI, ASPNET, MSSQL, PostgreSQL, MongoDB, MySQL, AWS, Azure, Supabase, Firebase, Entity Framework Core 🔹Frontend & Mobile: React, JavaScript/TypeScript, Next.js, Three.js, Vite, Blazor, Shadcn, Zod, React Native, Flutter, .NET MAUI, Swift, Xamarin 🔹Integrations: Stripe, PayPal, HubSpot, ActiveCampaign, Microsoft Dynamics 365, Twilio, Shopify, WooCommerce, Zapier, ChatGPT/OpenAI/Gemini 🔹Delivery: Slack, Jira, Azure DevOps, GitHub, CI/CD With over $800K+ in Upwork earnings, 100% JSS, and 5-star client feedback, I work with serious teams and founders who want high-quality, a clear scope, and predictable delivery. If you need to build an MVP, improve an existing SaaS product, or add AI features without wasting months on the wrong architecture, invite me to your job posting (click the "Invite to job" button at the top right of my profile) and let's go through it! 𝙄 𝙖𝙢 𝙖𝙫𝙖𝙞𝙡𝙖𝙗𝙡𝙚, 𝙡𝙚𝙩’𝙨 𝙘𝙝𝙖𝙩!

𝗚𝘂𝗿𝘄𝗶𝗻𝗱𝗲𝗿 | 𝗗𝗲𝘃𝗢𝗽𝘀 | 𝗠𝗟𝗢𝗽𝘀 | 𝗔𝗜𝗢𝗽𝘀 | 𝗦𝘆𝘀𝘁𝗲𝗺 𝗔𝗱𝗺𝗶𝗻 | 𝗖𝗹𝗼𝘂𝗱 & 𝗔𝗜 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁 Hello! I am 𝗚𝘂𝗿𝘄𝗶𝗻𝗱𝗲𝗿, a DevOps, MLOps, AIOps, and System Administration Engineer with 8+ years of experience building secure, scalable, and production-ready infrastructure for SaaS platforms, AI applications, cloud-native systems, and LLM-based products. From traditional server administration to modern AI infrastructure, I help businesses automate deployments, migrate applications from Replit to enterprise cloud platforms, scale applications, optimize cloud environments, and build reliable DevOps pipelines across AWS, Azure, and GCP. Whether you are launching a startup, deploying AI agents, managing Kubernetes clusters, building RAG-based applications, or simply need stable cloud infrastructure, I can help you deploy faster, automate smarter, and scale confidently. DevOps, Cloud & Infrastructure - AWS, Azure, GCP, DigitalOcean, Linode - Docker, Kubernetes (EKS, ECS, AKS, GKE) - Infrastructure as Code: Terraform, Ansible, CloudFormation - Serverless: AWS Lambda, Azure Functions, Google Cloud Functions - High-availability & autoscaling architectures - GPU infrastructure for AI/ML workloads - Linux & Windows server administration Replit, Cloud Migration & Platorm Modernization - Replit application deployment & infrastructure management - Migration from Replit to AWS, Azure, GCP, DigitalOcean & Kubernetes - Containerization using Docker for Replit-hosted applications - CI/CD implementation for Replit projects - Database migration & environment separation (Dev/Staging/Production) System Administration & Server Management - Ubuntu, CentOS, AlmaLinux, Debian, Windows Server - cPanel/WHM, Plesk, Webmin - Apache, Nginx, LiteSpeed, HAProxy - Email servers: Postfix, Exim, Dovecot - SPF, DKIM, DMARC configuration - SSL setup, backups, migrations & troubleshooting - Rsync, Rclone, cron jobs & automation CI/CD & Automation - Jenkins, GitHub Actions, GitLab CI/CD, Bitbucket Pipelines - Automated build, deployment & rollback pipelines - GitOps workflows using ArgoCD & Flux - Airflow, n8n, Zapier & workflow automation - Infrastructure automation using Python, Bash & YAML MLOps / LLMOps / AI Infrastructure - MLflow, Kubeflow, Vertex AI - AI model deployment with TensorFlow, PyTorch & SageMaker - LLMOps pipelines for production AI applications - OpenAI, Azure OpenAI & HuggingFace integrations - Vector databases: Pinecone, Weaviate, FAISS, Chroma - RAG pipelines & embedding systems - KServe, FastAPI & Docker-based model serving - AI agent orchestration using OpenClaw - Clawbot & Moltbot deployment workflows - Monitoring, retraining & model lifecycle management Monitoring, Security & AIOps - Prometheus, Grafana, ELK Stack, CloudWatch, Datadog - OpenTelemetry & Jaeger tracing - AI-driven monitoring & anomaly detection - Automated incident remediation - HashiCorp Vault, AWS KMS, Snyk, SonarQube - OWASP security best practices Databases & Storage - PostgreSQL, MySQL, MariaDB, AuroraDB - MongoDB, DynamoDB - Redis, Memcached - Vector databases for AI workloads I believe modern infrastructure is no longer just about servers, it is about intelligent automation, scalable AI systems, reliable deployments, and building environments that can grow with your business. If you are building AI platforms, SaaS systems, cloud infrastructure, ML pipelines, AI agents, or large-scale applications, I would be happy to help. Feel free to invite me to your project or schedule a quick call to discuss how I can help. Best regards, Gurwinder

AWS Certified Solutions Architect - "Top Rated" freelancer with over $300K in completed AWS cloud engineering overlapping with DevOps on Upwork, and other sales funnels. Specializing in AWS and can speak multi-cloud (can quickly pivot to equivalent of AWS services on Azure and GCP). Proven success in cloud engineering, infrastructure migration, system administration, disaster recovery, database management, and long-term support. CORE TECHNICAL SKILLS • Cloud & Infrastructure Tools: Amazon Web Services (EC2, RDS [AWS Aurora/MySQL/MariaDB/PostgreSQL], AWS DynamoDB, IaC (AWS CloudFormation and others), CI/CD, S3, IAM, VPC, CloudWatch, Lambda, SES, DMS, ECR, ECS Fargate), exposure to Azure and GCP environments. • Containers: Docker, EKS, ECS Fargate, containerized microservice operations • System Operations: Linux/Windows Server Admin, AWS CloudWatch, Uptime/Performance Tuning, Disaster Recovery • Databases: MySQL, MariaDB, PostgreSQL, Oracle, AWS RDS • Networking & Security: AWS IAM, VPC, Security Groups, WAF, SSH, SFTP, Cloudfront DNS • Tools: Bash, Git, Bitbucket, AWS CodePipeline, Travis, WordPress Migration, Sendy, Docker, containerized automation workflows

✅ Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 by Upwork (𝗧𝗼𝗽 𝟏%) ✅ 8555+ hours and still counting ✅ 86+ jobs completed successfully ✅ 100% Job Success (Client Satisfaction Ratio) ✅ High-Quality Work ✅ Budget-friendly ✅ Fluent English ✅ Flexible Availability (EDT/GMT/AEST) Dear Client, I am a Python-focused AI/ML Engineer with over 10 years of experience developing scalable backend applications, AI-powered platforms, and cloud-integrated solutions using Python, Django, Flask, and FastAPI. I have worked on more than 60 Django /Flask / FastAPI websites and web applications which include Enterprise level applications , eCommerce websites, Mobile websites, Healthcare websites along with JavaScript frameworks like AngularJS, ReactJS and Vue.Js. My experience also includes designing REST APIs, building data processing pipelines, deploying AI models, and developing production-grade web applications across AWS and Azure environments. I'm in the Top 4% overall in StackOverflow. I have created several Python projects for the last 10+ yrs with different libraries. I am a certified Python full stack developer from different institutions. ✅✅✅Core Python✅✅✅ Always used Python latest version along with unittest, PEP standard and KISS and OWASP security followed for coding. Always follow SOLID principles so that all my codes can be understood and extended by any good developer later. Almost all methods are tested by unittest various test cases. Each method cheked by profiling for its better performances. ✅✅✅REST API✅✅✅ All REST API are Open API standard and most of them are with Swagger defined. So they are definitely higest standard in every direction. ✅✅✅Django✅✅✅ I have used mostly Django and Flask framework but also use Tornado async. Django, Django CMS, Django Rest framework, Celery, sentry-sdk, django-extensions, django-rest-framework-jwt, django-rest-swagger, django-simple-history, django-model-utils, django-storage, django-allauth, dubug toolbar etc. ✅✅✅Flask✅✅✅ Flask, gunicorn, flask debug toolbar, pytest, sqlalchemy, marshmallow, psycopg2, celery, redis, wtf, flask-login, flask-limiter and many more. ✅✅✅Databases✅✅✅ I am expertise with different databases like PgSql, Mysql, Mariadb, Mongodb, nosql etc. ✅✅✅Cloud✅✅✅ I have working to create micro services application in different cloud platform say AWS, GCP and Azure. ✅✅✅AWS✅✅✅ Some of the tools I used in AWS various tools including CodeCommit, CodeBuild, CodeDeploy, CodePipeline, Cli, EC2, S3, EBS, DynamoDB, RDS, Lambda with Boto3, VPC, LightShell, SageMaker, Kinesis, SQS, SNS, AppSync, Beanstack, ECR, ECS, Farget, EKS, SES, ElastiCache, Cloudwatch, IAM, Cognito, ApiGateway, Shield, Sso, Route53, CloudFront, ELB, ALB. ✅✅✅Artificial Intelligence✅✅✅ My work is not limited with general Python and MVC based work. But I am a certified Machine Learning and Deep Learning engineer as well. Used different libraries including Tensorflow, Keras, Numpy, Pandas, Matplotlib, ScikitLearn etc. ✅✅✅Frontend ✅✅✅ Front end I have been using from HTML5 to Javascript, Jquery, Angular Js , React Js and Vue Js for years. ✅✅✅Development environment and process✅✅✅ Always use the highly secure development environment along with Git, Docker and Kubernetes. Experience in entire software development life cycle and decision-making. Skilled at building effective and productive working relationship with clients and team members. Software Product/Tools worked with: Python / Django / Flask / Pyramid, PostgreSQL / MySQL / SQL Server / Oracle, JavaScript, AJAX, jQuery, PHP, Amazon Web Services, Heroku, Google App Engine, Google API, Fedex API, Stripe API, PayPal API, HIPAA Compliance, AngularJS, ReactJS, OpenERP / Odoo, Docker, Redis, Redmine, Celery, RabbitMQ, Twilio API and lots more. I can integrate any API with your existing systems. Looking forward to an interview invitation.

PROFESSIONAL SUMMARY Your infrastructure is either costing too much, breaking too often, or both. I fix that. 20 years in Linux, 12 in AWS production environments. I work as an external senior DevOps partner for international startups and scale-ups — without the overhead of a full-time hire. Hands-on experience with containerized workloads and Kubernetes-based environments, building scalable, highly available, and cost-efficient production systems, including rolling deployments, scaling strategies, and operational troubleshooting. Proven experience managing complex Laravel, WordPress, WooCommerce, and Magento platforms at scale, including high-traffic workloads, large datasets, legacy systems, and critical production incidents. Acts as an external “DevOps on Duty” partner, providing senior-level infrastructure expertise without the need for full-time hiring. ⸻ RATES Kubernetes / EKS & high-availability setups: $70/hr Cloud scaling, high-availability & performance optimization: $60/hr AWS cloud services (EC2, RDS, S3, VPC, IAM, CloudFront ): $55/hr Instance & server management (EC2, VPS, Linux): $50/hr ** Regular hourly rate: $55/hr ** What I help with: ✅ AWS cost reduction and performance optimization ✅ Kubernetes and EKS production support ✅ Cloud infrastructure stability and monitoring ✅ DevOps on Duty and ongoing maintenance ⸻ TECHNICAL EXPERTISE Cloud & Infrastructure - AWS: EC2 (auto-scaling, launch templates), RDS & Aurora MySQL (performance tuning, replication, failover), S3 (lifecycle policies), CloudFront (origin optimization), Route53 (DNS & health checks), IAM (least-privilege access) - Cloud VPS & bare-metal providers: DigitalOcean, Hetzner, OVH, Vultr, Linode - Design and operation of highly available (HA) and fault-tolerant architectures - Capacity planning, horizontal and vertical scaling strategies - Cost optimization, resource right-sizing, and performance tuning - Infrastructure audits, risk assessment, and production readiness reviews - Migration planning between cloud providers and on-prem / bare-metal environments ⸻ Kubernetes & GitOps - Kubernetes for production workloads (managed and self-managed clusters) - High-availability Kubernetes setups (multi-node, multi-AZ where applicable) - Deployment strategies: rolling updates, zero-downtime releases, rollback planning - Horizontal scaling, resource requests/limits, and autoscaling concepts - Ingress configuration, service exposure, and traffic routing - GitOps-based deployments using Argo CD - Troubleshooting pods, nodes, networking, and cluster-level issues ⸻ Monitoring, Metrics & Logging - Prometheus for metrics collection and alerting - Grafana dashboards for infrastructure and application visibility - Centralized logging with ELK stack (Elasticsearch, Logstash, Kibana) - Loki-based log aggregation for containerized workloads - Root cause analysis using logs, metrics, and system-level signals ⸻ Linux & Server Administration - Advanced Linux system administration and system hardening - Kernel, filesystem, I/O, memory, and process-level performance tuning - CPU load analysis, disk bottleneck diagnostics, and network optimization - Backup architectures, snapshot strategies, and disaster recovery planning - Troubleshooting low-level system issues under sustained production load ⸻ Web & Application Stack - Nginx & Apache (event/worker tuning, reverse proxy, SSL/TLS optimization) - PHP-FPM (multi-version environments, legacy PHP support, process tuning) - MySQL / MariaDB / Aurora MySQL (query optimization, indexing strategies, large datasets) - Redis, Memcached, and Varnish (object caching, full-page caching, cache invalidation) - Cloudflare (CDN, WAF, origin shielding, DDoS mitigation, 5xx error handling) ⸻ Containers & Automation - Docker & Docker Compose for development, staging, and production workloads - Containerization of legacy PHP and monolithic applications - Cron workloads, background jobs, and scheduled tasks in containers - CI-friendly, reproducible environments with minimal configuration drift ⸻ Platforms & CMS - Laravel, WordPress & WooCommerce at scale (large catalogs, heavy imports, database bloat) - Magento 1 & Magento 2 (Redis, Varnish, multi-layer caching strategies) - Diagnosis and remediation of performance bottlenecks caused by plugins, themes, and cron jobs - Stability optimization under real production traffic and peak load ⸻ Reliability & Operations - Incident response, post-mortems, and root cause analysis - High-availability planning and failure scenario testing - Proactive monitoring and early detection of capacity issues - Reliability-first operational mindset for business-critical systems __________________ Availability: EU-based (UTC+2) with EU and US timezone overlap. Working style: clear communication, fast response, production-first mindset. Feel free to reach out to discuss your setup or current challenges.