Hire the Best Symbian Development Specialists
in India

✔️ Synology, TrueNAS, UnRaid, NAS, Proxmox, Openshift, Linux, Mac ✔️Plex, IPTV, Emby, Jellyfin, Usenet Expert ✔️ Apache, NGINX, Varnish, Redis, Memcached, Postfix, Exim, Mysql, Postgres, MariaDB, DynamoDB, Redshift, Prometheus, Gafana ✔️ GCP, Microsoft Azure, AWS, Digital Ocean, Hetzner, Contabo ✔️ SSO Expert ✔️ Proficient in Docker, Kubernetes, Helm, Terraform, Ansible ✔️ Git implementation/integration with existing software flow including CI-CD Pipeline ✔️ Domain Configuration, Management ✔️ Free consultancy. If you wish to compensate me for my time, I’ll gladly accept

🚀 𝐀𝐧𝐲𝐨𝐧𝐞 𝐜𝐚𝐧 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐞 𝐀𝐈 𝐜𝐨𝐝𝐞. 𝐁𝐮𝐭 𝐈 𝐦𝐚𝐤𝐞 𝐢𝐭 𝐬𝐞𝐜𝐮𝐫𝐞, 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲. 🔥 85+ completed projects (40+ SaaS & MVP platforms) delivered as a Full Stack Developer & React Developer 💰 Startup MVP platforms generated $500K+ revenue in their first 6 months 👥 SaaS products supporting 10K–50K active users built by an expert Full Stack Developer 📈 One platform grew from 2K to 7K users through continuous product updates by a Web Developer ⚡ Backend systems processing 300K–500K API requests every month 🚀 Startup MVPs delivered in 2–4 weeks (complex Startup MVP delivered in just 2 days by a Full Stack Developer) ⏱️ Optimized AI dashboard loading times from 2 minutes down to 3 seconds for 10K–50K active users 🎬 Video generation architecture supporting a heavy load of several thousand concurrent users 📊 5+ years building SaaS platforms & Startup MVPs as a professional Full Stack Developer 📦 100+ API integrations completed across production systems by a Full Stack Developer ⚙️ 20+ backend architectures designed from scratch for Mobile App Developer projects 🧠 AI integrations across 30+ commercial projects as a React Developer & Full Stack Developer 💼 I help founders build SaaS platforms, Startup MVPs, AI applications, Customer Portals, Marketplaces, and scalable Web Applications using React, Next.js, Node.js, Supabase, PostgreSQL, Stripe, Redis, and AI APIs as a Full Stack Developer. 🛠️ As a SaaS Developer, MVP Developer, Full Stack Developer, Software Developer, React Developer, WordPress Developer, Mobile App Developer, and Web Developer, I've delivered 85+ production projects (40+ SaaS & MVP platforms). As a Full Stack Developer, I help startups validate ideas, launch products in 2–4 weeks (complex MVP platforms in 2 days), and scale apps supporting 10K–50K active users with $500K+ revenue milestones. 🚀 Many companies hire me as a SaaS Developer, MVP Developer, Full Stack Developer, Startup Developer, React Developer, WordPress Developer, Mobile App Developer, Web Developer, and AI SaaS Developer. As a Full Stack Developer, I build products designed to scale. Systems I've developed as a Full Stack Developer process 300K–500K API requests monthly, integrate 100+ APIs, support 10K–50K active users, and grow years after MVP launch, generating $500K+ revenue. 🎯 Unlike many Software Developers, WordPress Developers, or basic Web Developers, I focus on the entire product lifecycle as a Full Stack Developer—from MVP planning to production infrastructure, subscription systems, customer portals, and SaaS scalability. Whether you need a Full Stack Developer and React Developer for an AI dashboard or a Mobile App Developer for a cross-platform release, I deliver results. 🏆 Why Founders Hire Me as a SaaS Developer & Full Stack Developer: 5+ years working as a SaaS Developer, MVP Developer, React Developer, WordPress Developer, Mobile App Developer, Web Developer, and Full Stack Developer. As a Full Stack Developer, I delivered 85+ projects, including 40+ SaaS & MVP platforms supporting 10K–50K active users. Startup MVP delivered in 2–4 weeks (complex MVP platforms in 2 days) by an expert Full Stack Developer. Production-ready products supporting 10K–50K active users after launch designed by a Full Stack Developer. One Startup MVP built by a Full Stack Developer generated $500K+ revenue during its first 6 months. One SaaS platform grew from 2K to 7K users through feature releases managed by a Full Stack Developer. Backend systems processing 300K–500K API requests every month created by a Full Stack Developer. 100+ API integrations (Stripe, Supabase, OpenAI, CRMs, payment gateways) completed by a Full Stack Developer. As a Full Stack Developer, I optimized AI dashboard loading times from 2 minutes down to 3 seconds for 10K–50K users. Built high-load video generation systems supporting several thousand concurrent users as a Full Stack Developer. Redis optimization reducing database load by 70%+ on high-traffic SaaS platforms supporting 10K–50K active users. React performance optimization improving Lighthouse scores to 90+ and reducing bundle sizes by 40%+ as a dedicated React Developer and Full Stack Developer. Experience building subscription platforms, customer portals, internal business systems, marketplaces, admin dashboards, WordPress Developer setups, Mobile App Developer integrations, and multi-tenant SaaS applications as a Full Stack Developer. Production architecture designed by a Full Stack Developer to support years of growth and generate $500K+ revenue. 📈 🚀 Startup Growth & Production Software with a Full Stack Developer As a SaaS Developer, MVP Developer, React Developer, Web Developer, WordPress Developer, Mobile App Developer, and Full Stack Developer, I help founders launch complex MVPs in 2 days and build scalable software capable of supporting 10K–50K users and generating $500K+ revenue.

✅ ABOUT ME: I am a Professional Full Time Freelancer. I have 8+ years of experience working on Windows/Linux server administration, CICD Devops ,AWS, Azure, windows/Linux troubleshooting, HyperV, proxmox servers, DNS records mapping, IIS, Domains and DNS records management, active directory, web server, webhosting, databases administrations and Mail server implementations, administrations for the mail services MS Office365, Gsuite, Zimbara and postfix . ✅ WHY ME? • Full-time Professional – I work on Upwork as a full-time freelancer. I take every project seriously and I am highly professional. • Highly responsive – I’ll always get back to you in less than 02 hours. • 100% Client satisfaction – I provide revisions and modifications even after our contract ends. • I provide accurate solutions and just as important, I can guide you to future prospects and put your project on the right track. • Good communication skills – You will find me very friendly to talk to. ========================================= #Windows Servers - clients #Linux Server - clients #Web servers - IIS, Apache, XAMPP, Nginx and Tomcat #Database Servers - MSSQL, ORACLE, MYSQL, MongoDB #Webhosting tools- Plesk, cPanel and CWP #Cloud services providers - AWS, Azure, GCP, Digital Ocean, World stream, OVH Cloud, Hetzner and Hosting raja #Hosting providers - Hostinger, Bluehost, Namecheap, Godaddy, Bigrock and Hostgator #Active Directory - setup, users creation, Centralized Management, policy creation and enhanced Security #Troubleshooting - L1, L2 Tools used ============== Github, SVN IIS,Apache,Tomcat,Nginx , Apache Kafka and Wordpress SSH, RDP, VNC, Anydesk, Splashtop and screen connect Mobaxterm,Toad,SSMS and Workbench Plesk,WHM,Cpanel Active Directory, IAM Servicenow, Redmine, Microsoft Teams and Slack Previous Clients Feedback: 1- "Karthik was an exceptional Upworker to deal with. He was responsive, communicative, knowledgeable and proactive at solving my urgent technical issue (my businesses website was down for an unknown reason) and I wouldn't hesitate to recommend him to anyone else seeking an excellent technical support specialist. Thank you Karthik!" 2- "Karthik went above and beyond to progress with a very difficult issue in a very short period of time. He is kind, hard-working, and knowledgeable." 3- "I recently had the pleasure of working with "Karthik Raja" on installing PMB Software project, and I must say it was an outstanding experience from start to finish. I highly recommend "Karthik Raja" to anyone seeking top-notch freelancing services." 4- "he provides ideas to solve our problems he is a best gem have ever met. He focused only in customer satisfaction. no negative reviews." So why wait? Just invite me to your job on Upwork so we can discuss how to make your project a success. Let’s work together and get it done!! Thanks, Karthik

I'm a linux sysadmin and have worked in a web hosting company for more than eight years and now doing a full-time sysadmin consulting.  I handle servers from co-locations/data centers to different vps and cloud hosting providers such as Rackspace, Amazon, Linode, DigitalOcean, and Softlayer.  I managed mostly lamp-stack servers on CentOS/RHEL and Debian/Ubuntu and several cPanel/WHM servers for shared hosting clients.  I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc.   Operating Systems: - Servers: RHEL, CentOS, Debian, Ubuntu, openSUSE, solaris Cloud and Hosting Providers: - Manage instances deployed in Rackspace, Amazon, and Linode - Manage dedicated servers in datacenter co-locations and Softlayer Virtualization and Cloud technologies: - Xen: setup, configure, and manage virtual machines running Debian and CentOS -openvz : setup, configure, manage and migrate virtual machines running on CentOS - OpenStack and Eucalyptus: setup, configure, and manage private cloud deployments Hosting Control Panels: - Manage multiple cPanel servers for shared hosting clients and services - Previous experiences include Plesk, zpanel, directadmin, and Webmin control panels DNS: -- Manage DNS cluster on Cpanel DNSOnly versions. Manage zones hosted and integrated with Cpanel servers. - Manage Bind DNS service on dedicated and Cpanel servers (WHM and DNSOnly versions). Manage zones hosted at Softlayer and integrated with Cpanel servers - Managed DNS from different hosting providers (Godaddy, NetworkSolutions, SRSPlus) as well as migrating entire DNS/NameServers between different providers.  Backups: - Cpanel Backups, and different rsync scripts (rsnapshot, rsback, rdiff), remote ftp backup. - Administer backups from cloud providers such as AmazonS3 and Rackspace CloudBackup Version Control Systems: - Git: setup and manage dedicated git hosting server running Gitolite and Gitlab - Github: manage organizations and private repositories. Setup deploy keys and webhooks Alerts and Monitoring: - Configure Nagios/opesview and cacti for servers and services monitoring - Server graphing with NewRelic and Pingdom services. Previous work experience includes Cacti, Graphite, MRTG, and PRTG. Drupal CMS Administration: - Managed Drupal 5,6, and 7 sites on LAMP-stack from different hosting providers - Drupal server and site performance evaluation, tuning, and optimizations - Setup and configure Drupal integration with CiviCRM, ApacheSolr/Tomcat, Memcached, APC, and Varnish - Applies Drupal standard and security updates on different site environments Server Security: - Experienced with setting up PCI Compliant servers. Scanning tools include dedicated Nessus server and third-party scanner like Trustwave and ControlScan - Setup and manage firewall rules with iptables, ufw, configserver firewall (csf), Rackspace RackConnect, AWS SecurityGroups, dedicated firewall devices.  - Rkhunter, Chkrootkits, SSHD, TCP Wrapper, fail2ban.

I’m a hands-on enterprise software professional with 14+ years of experience building scalable, process-driven solutions using leading AI, RAG, AI Agents, Agentic AI workflows implementation and collaboration, Vector DB, Graph DB, BPM platforms like Camunda 7 BPM, Camunda 8 BPM (Zeebe), Flowable BPM, Activiti BPM, and JBPM with Spring boot micro services and Python. I’ve helped clients design, automate, and optimize complex business processes for banking, insurance, government, and finance sectors. 💼 What I Do Best ✅ AI & LLM Integration | Intelligent Automation | RAG | Agentic Workflows | N8N (AI Autumation) | Airtable - AI-powered chatbot assistants using OpenAI GPT models, Claud and Ollama (Mistral, Llama), Claud with Python FastAPI, Claude and OpenAI Agents SDK. - Semantic search pipelines using vector db(FAISS and Qdrant), Graph DB(Neo4j), enabling Retrieval-Augmented Generation (RAG) for high-relevance contextual responses. Voice agent platform(RetellAI). - Built custom AI agents with tool usage and memory, orchestrated using LangChain /Langgraph / Agentic frameworks(CrewAI) for multi-step automation tasks and N8N AI workflow automation. - Seamlessly integrated AI assistants into Business Process Management (BPM) workflows (e.g., Camunda) to optimize decision making and automate repetitive user interactions. - Automated agentic workflows for tasks like retrieve incident status, details, cancellation requrest, get incident details via email, create incident, text summarization for form fields, document summarization, incident triage, ticket classification, and knowledge base augmentation. -Auto email responder using, email notifications, whatsapp notifications, SMS, telegram notifications using multi agents workflows. ✅ Business Process Automation - Camunda 7 / Camunda 8 (Zeebe) / Flowable / JBPM / Activiti BPM - Process modeling (BPMN), DMN, and custom workflow engines - Drools, Zen(GoRules) rule engine and complex decision automation ✅ Backend & Microservices Development - Java (Spring Boot, Spring Security, JPA, Hibernate) - Python (FastAPI) for high-performance APIs and AI integrations - RESTful API design, OAuth2, JWT, Keycloak-based security ✅ ETL Tools - Apache NiFi - Apache Airflow ✅ DevOps & Cloud Deployments - Docker, Kubernetes (EKS, ECS) - CI/CD with Jenkins, GitHub Actions - AWS (EC2, S3, Lambda, CloudWatch, API Gateway etc.) ✅ Integrations & Messaging - Apache Kafka (Confluent), RabbitMQ, Apache Camel - Elasticsearch, Apache Solr, Lucene for advanced search - Payment gateways: Stripe, Razorpay, PayPal, Moneris ✅ Frontend Capability (with expert UI/UX team) - Angular, ReactJS, NodeJS - PSD/XD to responsive HTML, Tailwind, Material UI 🎓 Corporate Trainings & Mentorship I offer professional training programs (remote/onsite) on: - Camunda 7 / Camunda 8 (Zeebe) - Flowable / Activiti / JBPM - Elasticsearch ✅ Why Clients Work With Me - Deep domain knowledge in AI + BPM + Microservices - Strong architecture, documentation & code quality - Proven track record delivering enterprise-grade systems - Ability to lead full project lifecycle — from POC to production 💬 Let’s connect and discuss how I can automate and optimize your business with smart workflows, secure APIs, and cloud-native systems.

I have more than 14 years experience in web development in PHP. Here is my specialization: 1. WHMCS themes & addons development 2. Web development in WordPress & Joomla 3. API integration - Logicboxes Orderbox API, Softlayer API, Globalsign API, Cacti API, cPanel/Plesk API, Openstack API, Website panel API, Linestone networks API, SSL Store's REST API, PRTG Network Monitor API etc. 4. Resellerclub SuperSite & Partnersite theme development 5. Hostbill, Clientexec, Blesta, Box Billing themes development 6. Ecommerce development in Opencart 7. Apart from that I have good knowledge of Codeigniter, Smarty and CakePHP I like to communicate with my client so that I can have clear understanding of their needs and vision of the project. Thank you in advance for your time and consideration. I look forward to working with you soon.