Senior Full Stack Developer | Top Rated Plus Developer | 300+ Projects Completed Are you seeking a Full Stack Developer, web expert, development partner, or business tech consultant? With 7+ years in full-stack and cross-platform development, I help founders and teams take products from concept to launch, web, mobile, and desktop, without the drama. I’ve delivered Full Stack Solutions, SaaS platforms, dashboards, marketplaces, and mobile apps used by real customers, shipping on time, documenting clearly, and keeping codebases clean for the next sprint. What you’ll get when we work together ✅Built-around-your-goals delivery: clear scope, measurable outcomes, short feedback loops. ✅Senior judgment: patterns that keep features stable, testable, and easy to extend. ✅Fast start: day-one environment setup, baseline CI, and a small first milestone. ✅Ongoing support: runbooks, monitoring, and pragmatic maintenance after launch. ✅Creative problem-solving: practical solutions when specs are evolving. Tech Stack ✅Front-end: TypeScript, React.js, Next.js, Vue.js, Nuxt.js, Angular, HTML5/CSS3, Tailwind, Ant Design, Material UI, Full Stack Development ✅Back-end: Node.js, Nest.js, Express.js, Koa, REST/GraphQL, Sequelize, TypeORM, PHP/Laravel, Symfony, .NET ✅Databases: PostgreSQL, MySQL, MongoDB, Redis, Firebase, GraphQL (resolvers/persisted queries) ✅Mobile / Cross-Platform: React Native, Flutter (store submissions, OTA updates) ✅QA: Manual testing, Jest, Mocha, Cypress, API testing with Postman ✅DevOps: Docker, Nginx, Jenkins, GitHub Actions, Amazon ECS ✅Cloud: AWS, Google Cloud Platform, Microsoft Azure, DigitalOcean Stop scrolling through endless profiles, you’ve found your build partner. Send a message to set up a quick consultation and outline your first milestone. Buzz words: Development Services: Product Development, Web Application Development, Website Development, Ecommerce Website Development, MVP Development, Application Development, Frontend Development, Backend Development, Full Stack Development, MERN Stack Development, Test Driven Development TDD, Agile Software Development, SaaS Development, Software Architecture and Design, API Integration, REST API Development, Third Party API Integration, ChatGPT API Integration, Website Performance Optimization, Progressive Web Apps PWA, Database Architecture, Database Design, Database Development, System Architecture, Responsive Design, Server Deployment Languages: TypeScript, JavaScript, PHP, C Sharp, XML, JSON, HTML5, CSS3 Frontend: ReactJS, NextJS, Redux, Redux Saga, React Query, MobX, VueJS, Vuex, Vuetify, NuxtJS, Quasar, Angular, Tailwind CSS, Ant Design, Material UI, Bootstrap, Styled Components, Emotion, SASS, LESS, CSS Grid, Flexbox Backend: NodeJS, NestJS, Koa, ExpressJS, Socket IO, PassportJS, Sequelize, TypeORM, Laravel, Symfony, ASP NET Core, ASP NET MVC, SignalR, GraphQL Databases: PostgreSQL, MySQL, MongoDB, Firebase, MariaDB, Redis Testing: Jest, Jasmine, Mocha, Cypress DevOps Cloud Infrastructure: Docker, Nginx, Jenkins, Continuous Integration and Continuous Deployment, AWS Lambda Amplify EC2 ECS CloudFront, Google Cloud Platform, Microsoft Azure, DigitalOcean, Heroku, Webpack, Git Bitbucket GitHub GitLab, Swagger, Vercel, NPM, Yarn APIs and Integrations: Stripe, PayPal, Elasticsearch, Twilio, OpenAI, GPT 4, GPT 4o Project Management and Collaboration: Agile, Scrum, Kanban, Jira, Trello, Asana, Slack, Monday, Notion, Confluence Design and UX: Figma, FigJam, Wireframing, Prototyping, UI Kits, Mobile First Design Other: Single Page Applications SPA, Server Side Rendering SSR, Client Side Rendering CSR, SEO, CMS WordPress Headless, Web3, NFT, Payment Gateway Integration, Data Scraping, CRM Development, Cross Browser Compatibility, Quality Assurance QA, Microservices, Modular Architecture, Event Driven Architecture, CQRS, Hexagonal Architecture, Domain Driven Design DDD, API Gateway, Webhooks, Rate Limiting, Throttling, CORS, Content Security Policy CSP Auth and Security: OAuth2, OpenID Connect, SAML, Single Sign On SSO, JSON Web Tokens JWT, Two Factor Authentication 2FA, Multi Factor Authentication MFA, Role Based Access Control RBAC, Attribute Based Access Control ABAC, Keycloak, Auth0, AWS Cognito, Web Application Firewall WAF, OWASP Top 10, Secrets Management, Vault Compliance: GDPR, HIPAA, SOC 2, PCI DSS, Audit Logs, Data Retention, PII Masking Performance and Delivery: SSR, SSG, ISR, Code Splitting, Lazy Loading, Incremental Builds, Edge Functions, CDN Caching, Image Optimization, Web Vitals, Prefetch, Preload Realtime and Messaging: WebSockets, Server Sent Events, WebRTC, Socket IO, Kafka, RabbitMQ, AWS SQS SNS, BullMQ, Redis Streams, Publish Subscribe DevOps and Infrastructure as Code: Kubernetes, Helm, Terraform, Pulumi, Ansible, ArgoCD, GitOps, Docker Compose, Nginx, Traefik, Full Stack Development

200+ production systems delivered. 100% Job Success Score held for 5 consecutive years. If you need a full stack developer who takes complete ownership from the first requirements session to a live, scalable system deployed - that is the track record behind every project I take on, and the reason clients keep coming back. I build custom ERP, CRM, SaaS, POS, and full stack web applications for businesses in construction, manufacturing, healthcare, and enterprise software. Working across .NET, React, TypeScript, Node.js, MS SQL, MySQL, PostgreSQL, MongoDB. and Azure. I deliver systems that hold up under real business load years after launch - not just during the demo. ✅ Top Rated | 18+ Years Building Enterprise Software in Production ✅ 200+ Custom ERP, CRM, POS, and SaaS Platforms Delivered End to End ✅ 100% Job Success Score - 7 Consecutive Years Without a Single Failed Engagement ✅ Full Stack Developer: .NET, React, TypeScript, Node.js, MS SQL, PostgreSQL, MySQL, MongoDB, and Azure, DevOps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐⭐⭐⭐⭐ CLIENT RESULTS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ "Haider was an excellent contractor to work with. He understood the requirements well and delivered to spec, on budget, and on time. I would happily recommend Haider to others." - Verified 5-star review "Great and fast - did the things and logical design in a very fast and professional way. Looking forward to new projects soon." - Verified 5-star review ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔷 SYSTEMS I HAVE DELIVERED ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SR360 - Full multi-tenant cloud CRM/ERP for a remodeling business covering sales pipeline, job costing, commissions, and accounting, built on .NET, React, and Azure SQL. AYAS - NDIS and GDPR-compliant service booking platform with Google and Outlook calendar integration, supporting admin, provider, and client roles with full compliance audit trails. Vakency - Recruitment CRM for enterprise IT hiring teams on .NET, React, TypeScript, and Azure with automated notification workflows and full CI/CD. Quote Master - React and Dot Net based Web App that simplifies complex cost estimation, quote generation and job management process for Windows and Doors Manufacturer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔷 WHAT I BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Custom ERP and CRM Development Multi-module ERP and CRM platforms built from scratch around your exact workflows - not adapted templates. Sales, job costing, inventory, commissions, and accounting consolidated into one maintainable system. Built on .NET Core and React, deployed on Azure with CI/CD from day one. ▸ SaaS and Multi-Tenant Platform Development Full stack SaaS platforms with clean tenant isolation, role-based access control, subscription and license management, and third-party API integrations. Designed to scale on Azure without architectural rework later. ▸ Full Stack Web Application Development React, Next.js, TypeScript, Node.js, NestJS, .NET Core 8, REST API - integrated end to end. As a full stack developer I own every layer: frontend, backend, database schema, and Azure cloud infrastructure, with no handoffs between layers. ▸ AI-Integrated Business Applications Embedding AI capabilities into production business systems - OpenAI API integrations, intelligent workflow automation, and AI-powered processing within custom ERP, CRM, and SaaS platforms built on .NET Core and Node.js. ▸ Legacy .NET Modernization Taking over inherited .NET, VB.NET, ASP.NET, WinForms, or WPF codebases and migrating them to .NET Core 8, or rebuilding as modern full stack web applications - without losing critical business logic or operational data. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🛠 TECH STACK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⚡ Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS, Material UI, DevExtreme, DevExpress ⚡ Backend: .NET, ASP.NET MVC, Node.js, NestJS, C#, REST API ⚡ Database: PostgreSQL, Azure SQL, MS SQL Server, MySQL, SQLite, MongoDB ⚡ Cloud: Azure App Services, Azure Functions, Azure DevOps, AWS, Docker, CI/CD, Git ⚡ Reporting: SSRS, Crystal Reports, RDLC, DevExpress Reports ⚡ Desktop: C# WinForms, WPF, DevExpress ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔷 HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I work as business analyst, solution architect, and hands-on full stack developer at the same time. You get system-level architecture thinking and full accountability on delivery. No handoffs between layers. No out-of-scope surprises. No disappearing after go-live. Every project starts with a structured requirements session - no formal spec required. Rough ideas get shaped into executable plans before a single line of code is written. Agile iteration cycles deliver working software in your hands within weeks, tested and ready for feedback. Share what you are building and I will come back with a clear architecture and a realistic timeline before committing to anything.

🚀 Top 1% of Talent in 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & Technology Leadership ⚡ Building 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬, enterprise platforms, SaaS solutions, and scalable digital ecosystems 🔧 Using modern AI tools including Cursor, Claude Code, GitHub Copilot, GPT-4/GPT-4o, and Claude Sonnet/Opus 🤖 Experienced in AI agents, LLM integrations, AI automation, and multi-agent development systems 🚀 Accelerating development with 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢, agentic coding, and automation-driven workflows 💻 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐀𝐍𝐃 𝐘𝐎𝐔𝐑 𝐓𝐄𝐀𝐌 𝐆𝐄𝐓 Full-Stack Web Development Master's - high-performance web application development utilizing React, Node.js, and PHP to build scalable SaaS, FinTech, and Enterprise software. AI & Automation Systems Innovators - custom LLM applications, RAG pipelines, and intelligent workflow automations seamlessly integrated into your infrastructure. 📊 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒 𝐈𝐍 𝐍𝐔𝐌𝐁𝐄𝐑𝐒 (𝐁𝐔𝐒𝐈𝐍𝐄𝐒𝐒 & 𝐒𝐘𝐒𝐓𝐄𝐌 𝐈𝐌𝐏𝐀𝐂𝐓) 25+ years, 50,000+ engineering hours, 200+ successful launches delivered as a Senior Full Stack Developer and tech leader across global industries. ◾ Full-Stack Web Development for Enterprise & SaaS Platforms: Engineered and launched custom AI-powered SaaS platforms that scaled to millions of active users with 99.99% operational uptime. Accelerated product development cycles by 40% by deploying optimized React component libraries and agile workflows. Backend Architecture & API Engineering (Node.js & PHP): Reduced server infrastructure costs by 50% by migrating legacy monoliths into scalable microservices using Node.js, NestJS, and PHP. Optimized heavy data-processing pipelines, reducing database latency by 70% via tailored PostgreSQL, MongoDB, and MySQL schemas. ◾ AI App Development & Workflow Automation: Developed and integrated proprietary OpenAI GPT, Claude, and Gemini models into operational CRMs, increasing client workflow efficiency by 180%. Successfully deployed secure, HIPAA-compliant healthcare applications and high-security FinTech platforms with built-in Stripe / PayPal integrations. 🎯 𝐖𝐇𝐄𝐑𝐄 𝐖𝐄 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 (𝐂𝐎𝐑𝐄 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄) As a Full Stack Developer & Solution Architect: I handle the full cycle of Full-Stack Web Development, defining technical roadmaps, designing scalable web applications, and ensuring bulletproof cyber-security protocols. As a Front-End Development Expert: Crafting pixel-perfect, highly responsive user interfaces using React, Next.js, TypeScript, Vue.js, and Angular to ensure maximum conversion rates and premium UX. As a Back-End Development Authority: Designing ultra-fast APIs and core services with Node.js (Express/NestJS), PHP, Python (FastAPI/Django), and modern Serverless Stack architectures. As a Cloud & DevOps Engineer: Implementing enterprise-grade cloud deployments via AWS, Google Cloud, and Azure, utilizing Docker, Kubernetes, and automated CI/CD pipelines. 🛠 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 & 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐄𝐂𝐎𝐒𝐘𝐒𝐓𝐄𝐌 Frontend Suite: React, Next.js, TypeScript, Tailwind CSS, Vue.js, Angular, Responsive Web Design. Backend Core: Node.js, NestJS, Express.js, PHP, Python, FastAPI, Django. Databases & Caching: PostgreSQL, MongoDB, MySQL, Redis. APIs & Global Integrations: REST APIs, GraphQL, Webhooks, Stripe, PayPal, Twilio, SendGrid. Cloud & DevOps Platform: AWS (Amazon Web Services), Google Cloud, Azure, Docker, Kubernetes, Jenkins, GitHub Actions CI/CD. 🧠 𝐃𝐄𝐄𝐏 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 AI & SaaS Startups: Rapid MVP development, RAG pipelines, AI chatbots, and predictive analytics tools. FinTech & E-commerce: High-load payment gateways, customized checkout solutions, compliance, and ledger systems. Healthcare & PropTech: Automated workflow systems, secure patient portals, CRM platforms, and real-time data visualization dashboards. Enterprise Automation: Heavy B2B platforms, marketplaces, and cross-platform integrations. ⚡ 𝐇𝐎𝐖 𝐖𝐄 𝐖𝐎𝐑𝐊 𝐓𝐎𝐆𝐄𝐓𝐇𝐄𝐑 Strategic Discovery: As a CTO, I align your business goals, success metrics, and timeline constraints before writing a single line of code. Architecture Blueprinting: We map out the core database schemas, React frontend components, and Node.js / PHP API flows to ensure long-term scalability. Agile Iteration: Backed by the senior engineering powerhouse at Onix-Systems, we deliver high-velocity sprints with predictable, production-ready releases every 2 weeks. DevOps & Launch: Secure deployment across AWS/GCP/Azure with ongoing tech partnership and proactive optimization based on product metrics. Looking for a Senior Full Stack Developer and a Full-Stack Web Development team to turn your complex concept into a world-class, scalable web platform? 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭! Send over your project brief, scope, or existing codebase notes, and I’ll provide a high-level strategic roadmap for your next big launch. ☎️

I help businesses and startups integrate APIs, build robust backend systems, and deliver internal tools that just work — fast and reliable. Whether it’s custom web apps, legacy system upgrades, or low-code solutions, I solve backend and database challenges so you don’t have to worry about the technical details. I specialize in PHP backend development, API integration, and building dashboards & internal tools using Retool and Xano. I also work with the Bubble visual development platform for fast MVPs and have extensive database experience including MySQL, PostgreSQL, Firebase, and Parse. Additionally, I have expertise with large-scale directory platforms, including Brilliant Directories and eDirectory, as well as complex legacy system modernization. Recent projects and impact: Completed a Retool internal tool project on Upwork with excellent client feedback, integrating multiple APIs and databases to streamline the client’s workflow. Built large-scale platforms including directories, food delivery apps, cleaning platforms, and game backends. I can start immediately and help deliver your project efficiently, securely, and at scale. Let’s connect and get your backend, APIs, or internal tools running exactly as you need!

I am an experienced Linux administrator. I have 15+ years of experience in Linux system administration and problem-solving. I can troubleshooting all kinds of linux issues, centos migration, centos/ubuntu crash rescue, investigate server performance issue and web server administration. Skills & Deliverables: Cloud Infrastructure & Dedicated VPS Setup (AWS, DigitalOcean, Hetzner, Contabo, Linode etc) Building secure, high-performance servers with proper backup, and automation. Linux Administration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Performance optimization, monitoring, troubleshooting, log analysis, and uptime management. Server migration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Secure migration of data and app between different servers. Web Server Trouble-shooting Slow server, website troubleshooting and optimization Recurring downtime issue troubleshooting and fix. Centos7 server migration Upgrade centos7 to almalinux 8 or 9. Migrate data&apps from centos7 to Ubuntu/Debian/Rocky/Almalinux Server Upgrade(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Upgrade ubuntu 14 16 18 20 22 to the latest version. Upgrade Debian , Rocky Linux, Almalinux to the latest version Server rescue(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Fix linux system crash, file system corruption. Security & Compliance Firewall configuration, access control, TLS/SSL, patching, vulnerability prevention. Backup & Disaster Recovery Strategy Automated backups, retention policies, restore testing, failover planning. Application Hosting & Migration WordPress, Prestashop, Forum app, Node.js, Python apps — smooth migration without downtime. Email Infrastructure & Deliverability Improvement Domain authentication setup (SPF / DKIM / DMARC), inbox placement, fixing spam issues. Why choose me? - Strong skills and extensive experience , can work independently and efficiently , able to fix complex issues - Fast and clear communication, detail and solution oriented - Honest and proactive work ethic

Data Engineering. = ETL/ELT - Microsoft Azure Copilot Studio, Foundry, M365 Agents SDK AI Engineering = Machine Learning, PySpark = API access to LLM / Self Hosted LLM HIPAA Compliance: = Audit to determine PHI locations = Minimizing records with PHI = Audit Gaps in data security = Safeguard implementation = Procedures for Data breaches = Security Audit, Cybersecurity Microsoft Azure and Python Azure Data Warehouse Azure Data Factory Azure functions - Python Azure Data Bricks AWS and Python AWS Elastic Map Reduce (EMR) / Apache Spark, Hadoop (EMR) Serverless python functions : Lambda, Serverless ETL: Glue, Serverless SQL Query Service : Athena, Simple Queue Service / Simple Notification Service (SQS/SNS) Streaming Data : Kinesis Elastic MapReduce EC2 (ubuntu , Windows), Relational Database Service RDS ( Mysql, PostgreSQL) Core Technologies Python3, Pandas, PySpark, PyQt, PyTorch SQL MSSQL, Mysql , PostgreSQL, PrestoDB Django, Flask Git, Docker Extract Transform Load (ETL) ETL / ELT Tools : Talend, dbt, Airbyte, AWS Glue, Fivetrans Front End: Flutter ( with Flutterflow and Dart custom code) Data Visualization : Orange, Chartjs PowerBi, Metabase Data Integrations: Python : Python e-commerce API : Amazon Marketplace MWS API, Amazon seller central API, UPS, USPS, FEDEX API Integrations Python e-commerce : etsy API, ebay API, Shopify API, Aliexpress API, Flipkart API Python : Google Cloud Platform, Google HealthCare API Salesforce : Data Migration & Data Integration Salesforce Apex , Batch Apex, Scheduled Apex & Lightning Web Component Development Salesforce Certifications Held : Salesforce certified Administrator, Salesforce certified Developer , Zoho Creator Zoho API Integrations Domain Expertise: Health Tech Saas : HIPAA, HL7 EMR, EHR, APIs . LegalTech: AI assisted Case Research. Case Document Retrieval, Case Summarization, Case Citation Paralegal

Top Rated on Upwork - 97% Job Success, $50K+ earned, 1,200+ hours, 100+ projects delivered. Senior full-stack developer / Principal Software Engineer with 14+ years building production business software. Now focused on AI-integrated and automation-powered applications. Recent work: • AI/ML loan prediction system (FastAPI + Vue.js + PostgreSQL) for a finance client • Production CRM with AI-assisted workflows (NestJS, React, PostgreSQL, Docker) • Security hardening on a live API — closed SQL injection vectors flagged by OWASP ZAP • Media asset management platform with on-demand HLS video transcoding • Hierarchical Redis caching layer delivering ~100x performance improvement • Multi-tenant SaaS platforms, ERP modules, BI dashboards, and mobile apps (Ionic/Capacitor) Core stack: Python/FastAPI, Node.js/NestJS, Vue.js/React, PostgreSQL, Docker, AWS/GCP. I integrate LLMs (OpenAI, Claude, open-source models), build custom automation workflows beyond no-code (n8n, Python/Node services), and add AI features into existing applications. Comfortable with Laravel/PHP for legacy modernization. Beyond code, I bring architecture, technical leadership, and team experience — useful for founders who want a senior partner, not just a contractor. I'm a good fit if you need: • AI features added to your existing app (chat, classification, automation, analysis) • A new CRM, internal tool, dashboard, or SaaS platform built end-to-end • Custom automation that goes beyond no-code - real Python/Node services • A Laravel/PHP system modernized, refactored, or extended • A legacy system modernized, refactored, or migrated • A senior developer who can own backend, frontend, database, and deployment

A seasoned Node.js, react.js, Next.js, Laravel, Express.js, SSR & Javascript with over 10 years of experience. I approach my work with passion and strive to be the best in my field, dedicating myself to continuous improvement. As a professional developer, I prioritise a 100% completion rate and maintain a high standard of professionalism in client interactions. I am open to providing personal advice when needed. Efficiency is key to my work, and I am adept at handling projects swiftly. While I generally work independently, I have a remote team available for situations that require rapid response. For more information about my contributions and expertise, you can refer to WordPress release blogs. ◉React.js, Next.js, Node.js ◉ WordPress ◉ Php ◉ Html, Html5 ◉ Website Designing ◉ Website Development. ◉ Graphics Designing. ◉ WordPress plugin modification. ◉ Woo-commerce Customisation. ◉ woo-commerce theme development etc. ◉ eCommerce site developing on the woo-commerce platform. ◉ Custom Plugin and theme development ◉ Performance improvement ◉ WP Geodirectory Expert I am available on all time zones and ready to get started with a new assignment Regards

Full Stack Developer | PHP, Laravel, CodeIgniter, Symfony | WordPress Expert | Python, C++ | API Integration | Database Design | Server & DevOps Hi, I’m Deepak Singh - a Full Stack Developer with 11+ years of hands-on experience building, fixing, and scaling real-world software. I specialize in understanding existing systems quickly, solving complex problems, and delivering clean, reliable solutions. Over the years, I’ve worked on web applications, desktop software, WordPress platforms, automation tools, bots, web scrapers, and database-driven systems for businesses across different domains. My strength is not just writing code, but understanding how systems should work in production — performance, stability, database design, API flow, server setup, and long-term maintainability. What I Work With - Backend & Frameworks PHP, Laravel, CodeIgniter, Symfony Python, C++, Node.js REST APIs, Third-party API integrations Frontend HTML, CSS, Bootstrap, jQuery, JavaScript Responsive UI from design files (Figma/PSD/HTML) WordPress (Core Expertise) Custom plugin development Custom theme development Elementor and advanced customization Fixing and improving existing WordPress codebases Databases MySQL, PostgreSQL, MongoDB Database design, optimization, reporting Desktop & Automation C++ desktop applications MS Office automation (Excel, Word, Access using VBA) Python bots, web scrapers, automation scripts Mobile Android apps using Java and Kotlin Server & Deployment Linux servers, VPS setup, Nginx/Apache SSL, domain setup, production deployment Performance tuning and troubleshooting What Makes Me Different I’m very comfortable working with legacy or messy codebases and turning them into stable systems Strong debugging skills - I can trace issues quickly and fix them properly Clean, structured, and maintainable coding style Strong understanding of databases and system architecture Clear communication and reliable updates Self-driven and disciplined I have also worked on data handling projects — cleaning raw data, structuring it into databases, and generating meaningful reports from it. If you need someone who can step into your project, understand it deeply, fix issues, build new features, or take full ownership of the system — I’m here to help. Let’s build something solid, scalable, and reliable together. Deepak Singh

📢 Available for new projects 📢 I'm a Senior Java Developer with more than 10 years of commercial experience building stable, scalable, and secure backend systems. I specialize in Spring Boot microservices and cloud-native architecture — and I've shipped production systems in Fintech, EdTech, Healthcare, Retail, Hospitality, etc. My core strength is backend architecture: clean APIs, event-driven systems, and services that scale. I also work across the full stack development when needed — React on the frontend, Node.js for integrations, and AWS for deployment and infrastructure. What I bring to your project: - Production-grade Spring Boot microservices and REST APIs - Cloud infrastructure on AWS with Docker and CI/CD pipelines - Full-stack capability: Java backend + React frontend - Relational and NoSQL databases: PostgreSQL, MySQL, MongoDB - Clean, maintainable code with TDD and Agile workflows I've worked on SaaS platforms, enterprise systems, and MVPs — from initial architecture through to deployment. Go-To Stack: Java (Spring Boot, Spring Cloud, Hibernate) · React · Node.js · AWS · Docker · PostgreSQL · MongoDB · Jenkins · GitFlow Ready to start - just drop me a message and we will start working!