Hire the Best Informix Developers

🌟 Expert-Vetted Talent - Recognized in Upwork's top 1% of Talent ✅ Established Track Record of Hours and Earnings 🚀 Fastest Response Times 💯 100% Job Success Awarded by Clients 🔝 Top Rated Plus by Upwork, Freelancer and Agency 🔎 Searching for New Opportunities and Problems to Solve Hello and welcome, thank you for considering me for your project. My Upwork profile’s stats clearly demonstrate both my expertise and the value I add to every team that brings me on. The thousands of hours clocked on this platform alone speak to my years of experience in Software Development, and the total earnings shows a glimpse of how valuable that time has been for clients. I am available and ready to answer specific questions about your project’s current problem, next opportunity, or my fit for it. Shall we get to work? Send a message or an invite now and I will be right with you. 𝐖𝐡𝐲 𝗖𝗹𝗶𝗲𝗻𝘁’𝘀 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 1. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Decades of experience bring a deep understanding of various languages, frameworks, platforms and tools, common and uncommon pitfalls, and alternative solutions. 🗯️ “He was very responsive to our messages and explained what was needed in our project clearly. He is definitely an expert in his work.” 2. 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝗼𝗹𝘃𝗶𝗻𝗴: I have a proven track record and knack for solving complex problems and providing customized solutions for specific business needs and challenges. 💭 “Isaac was able to quickly discern what I needed and delivered…” 3. 𝗦𝘆𝘀𝘁𝗲𝗺 𝗩𝗶𝗲𝘄 𝗮𝗻𝗱 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝗼𝗻: Years of experience and diverse projects have helped me accumulate a broad set of skills and tools. I use this experience to the advantage of my client’s projects in not only accomplishing tasks, but in advising and consulting on potential challenges and opportunities. 💬 “LIFE SAVER!!! I have now use(d) Issac for two separate jobs now and will be bringing him on for some regular hours. Hopefully we get some funding and I can do even more with him. GREAT DEVELOPER” 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Python|Django|PHP | MySQL | Laravel | WordPress | CodeIgniter | ExpressionEngine | CSS | HTML | JavaScript | Express.js | React.js | Bootstrap | PostgreSQL | NoSQL | Linux | Apache | Nginx | API | Git | SVN | Amazon Web Services | AWS EC2 | 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝗜 𝐎𝐟𝐟𝐞𝐫: 𝐅𝐫𝐨𝐧𝐭 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Planning, Design, Documentation, Coding, Testing, Debugging, Deployment, Monitoring, and Maintenance. 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Cloud infrastructure Design, Deployment, Optimization, Maintenance, Scaling, Recovery and Backup, Troubleshooting, and Cost Management. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 Management: Architecting, Optimization, Monitoring, Recovery, Updating, and Merging. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Planning, Project Requirements, Task Detailing, Developer Support and Feedback, Problem Resolution, Progress Monitoring, Qualification Testing, and Stakeholder Communication.

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.

Most ERPNext projects go over budget and under-deliver — not because the software is wrong, but because the implementation ignored how the business actually operates. That's the problem I've spent 13 years fixing. I build ERPNext implementations and Spring Boot backend systems for startups, SMEs, and enterprises that need things done right the first time. I'm Frappe Certified on ERPNext V15, and I've completed 38+ projects on Upwork with a 100% Job Success Score across $90,000+ in work — which means clients come back, and they refer others. 𝐖𝐡𝐞𝐫𝐞 𝐈 𝐚𝐝𝐝 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐯𝐚𝐥𝐮𝐞: On the ERPNext side: end-to-end implementations, custom DocTypes, workflow automations, approval hierarchies, print formats, custom scripts, and REST API integrations with third-party tools. I understand the Frappe framework deeply enough to build what the standard modules can't. On the backend side: Spring Boot REST APIs and microservices with proper security (Spring Security, JWT, RBAC), JPA/Hibernate, clean architecture, and production-ready deployments. I've also handled Liferay 6.2/7.x portal development and Java + React/Angular enterprise portals for clients who needed both ERP and a custom frontend layer. What separates working with me from working with a developer who just executes tickets: I ask the two questions most developers skip before starting — what does your current process actually look like, and what does failure cost you? That conversation shapes everything and usually saves weeks of rework. Currently available. I reply within a few hours.

I’m a Full-Stack ERPNext Architect with 8+ years of experience delivering scalable, enterprise-grade ERP solutions across industries such as Manufacturing, Retail, Healthcare, Professional Services, and Distribution. I specialize in end-to-end ERPNext implementations, helping businesses streamline operations, automate workflows, and build reliable systems that support long-term growth. ➤ ERPNext & Frappe Expertise • Full ERPNext implementation, configuration, and customization • Custom Frappe apps, DocTypes, workflows, and automation • Finance, Accounting, HR & Payroll, Manufacturing, CRM, Inventory • Multi-company and multi-branch ERP architecture • API integrations with third-party platforms and services • Payment gateway integrations (Stripe, Razorpay, etc.) • ERPNext performance optimization and scaling • Data migration from legacy systems (Odoo, spreadsheets, custom ERPs) • Custom reports, dashboards, and analytics • Role-based access control and workflow automation I help organizations digitize and optimize mission-critical processes through secure and scalable ERP architecture. ➤ Implementation & Technical Capabilities • Frappe Framework (Python, MariaDB, REST APIs) • ERPNext customization and module development • Server-side scripting and automation logic • Third-party integrations and webhook handling • Docker-based deployments and cloud hosting (AWS, DigitalOcean, Frappe Cloud) • System architecture planning and technical consulting • ERP migration strategy and workflow optimization If you're looking for an ERPNext expert who understands both business workflows and technical architecture, I can help you design and implement a system that is efficient, scalable, and future-ready. Let’s build a powerful ERP solution tailored to your business needs.

🎯14+ Years of Experience | 75+ Projects Delivered | SaaS, Logistics, eCommerce, Enterprise | Technical Writing | AI Chatbot I’m a results-driven software architect and creative web designer with over 14 years of experience delivering full-scale solutions alongside Product Managers across web, cloud, and mobile platforms. I also bring hands-on experience in logistics and transportation systems, including end-to-end development of TMS (Transport Management System) and WMS (Warehouse Management System) platforms. This includes shipment booking and dispatching, route planning, fleet and carrier management, warehouse inventory control, order lifecycle management, and real-time tracking systems using GPS and event-driven architecture. 🛠 Core Development Expertise • .NET (.NET Core, MVC, Web API), C#, Java, Spring Boot, Tailwind, Technical Writing • SaaS architecture, Logistics platforms, TMS, WMS, Fleet Management, Route Optimization, Supply Chain Systems, Ethereum, Solidity, Blockchain, Blockchain Architecture • Real-time tracking using WebSockets, GPS integrations, live data streaming, and event-driven systems • PostgreSQL, SQL Server, MySQL, MongoDB, Redis, ClickHouse • OpenAI, Generative AI, Machine Learning, OCR, Airtable, Workflow Automation • Angular, Next. js (App Router), React. js, TypeScript, Blazor, JavaScript • REST APIs, GraphQL, API integrations, OAuth, Webhooks • Cloud & DevOps: AWS, Azure, CI/CD pipelines, Terraform, S3-compatible storage • Backend: .NET, Node. js, Golang, Python (Django / FastAPI) • ERP/CRM integrations: Zoho, HubSpot, Monday. com • Payments & Finance: Stripe API, QuickBooks API, Intuit integrations • Logistics-specific modules: Shipment booking, load management, driver portals, customer/carrier dashboards, warehouse operations, inventory tracking, reporting & analytics dashboards 🎨 Design Skillset • Figma, Webflow, Adobe Creative Suite • Mobile-first, CRO-focused UI/UX for SaaS and logistics platforms • Wireframes, prototypes, and high-fidelity designs aligned with operational workflows Whether you’re building a scalable logistics SaaS platform, transportation management system, or a warehouse automation solution, I can step in from architecture to execution and deliver a system that is performant, scalable, and built for real-world operations. 📍 Based in India | Strong experience with US-based logistics clients | Time zone alignment is not an issue | Open to short- and long-term projects

💡 100% Job Success. Top Rated Senior Software Engineer with 20+ years of experience. Expert of: Magento 2 Adobe Commerce, WordPress, Laravel, Symfony. E-commerce Solutions Architect with extensive experience delivering scalable platforms, APIs, CRM and ERP integrations, SEO, and DevOps environments. Specialist in end-to-end solutions, custom development, and high-availability systems. Zero-Downtime delivery. Key strengths include translating business requirements into robust code, resolving real-world issues. 💡 Why this is the right choice for your requirements: » Premium engineering » Reliable delivery » Full ownership » Proven, predictable business results Platforms: Adobe Commerce - Magento Open Source | Enterprise | Cloud | Hyvä | Hyva | Venia PWA Studio | Adobe Experience Manager (AEM) | ScandiPWA | GraphCommerce | Aimeos | Saleor | Spryker | MedusaJs | MercurJS | Vendure | Vue Storefront | Sylius | Shopware | Drupal | PrestaShop | WordPress | WooCommerce | BigCommerce | Bagisto | Pipedrive | ERPNext | Saleron | Frappe » AI | ML | LLM | Generative AI | AI and MCP + eCommerce | SaaS » Strong technical background in Symfony | Laminas | Laravel | CodeIgniter | Yii | Yii2 | Zend Framework | Phalcon | FuelPHP | Slim | CakePHP | TYPO3 | Slim | Lumen | Mezzio | Spiral Skills: » Stack: PHP | Typescript | Python | JavaScript | C | C++ | Rust | XML | JSON | YAML | HTML/CSS | Bash | React/ReactJs | Next/NextJs/Next.js | Node | Vue JS | jQuery | Angular JS | Knockout JS | RequireJS | Stimulus | Express | NestJS | Ruby » DB: MySql | PostgreSQL | TimescaleDB | MariaDb | Persona Db | TokuDB | WebScaleSQL | Drizzle | Amazon Aurora | Google Cloud SQL | ApsaraDB | OurDelta | Vitess | MSSql | MongoDB | Redis Key/Value » Indexing: Opensearch | Manticore | Solr | Sphinx | Elasticsearch » Docker | docker-compose | Podman | podman-compose | Proxmox | Nginx | Angie | Apache | Lighttpd | Varnish | Varnish Plus | Redis | Valkey | RabbitMQ » PIM: Pimcore | Inriver | Plytix | Bluestonepim | Salsify | Akeneo | UnoPim | Atropim | OpenPIM | Icecat | Custom PIM development: Backend | Frontend | SRM, OMS, WMS, Pimcore, MDM » Mobile Solutions Architect: compatible with Apple App Store | Google Play Store | Microsoft Store | Huawei Appgallery | Samsung App Store » Integration's Solutions Architect: Amazon | eBay | Walmart | Etsy | Tiktok | Alibaba | Rakuten | Newegg | Bonanza | Wish | Zalando | MercadoLibre | Bed | Bath & Beyond - BedBathAndBeyond | Wayfair | Facebook Marketplace / Facebook Shop | Craigslist | BestBuy | Sears | Homedepot | Nextdoor | CustomMade | RubyLane | Poshmark | Chairish | StockX | Grailed | OfferUp | Depop | Best Buy | SAP | Vinted | ThredUp | 1stdibs | Faire | Revolve | Farfetch | ASOS | Houzz | Folksy | Mercari | AliExpress | Taobao | Lazada | Allegro | Flipkart | Cdiscount | BhPhotoVideo | Catch | TradeMe | eBid | CDON | Carrefour | Kaufland | Allegro | LeroyMerlin | ELECLERC | ePrice | RueDuCommerce | Conforama | Fnac | Darty | Worten | MediaWorld | Mediamarkt | Mediamarkt | Google Shopping/Google Merchant | Michaels | Reverb | Mercadolibre | Dropshipping | NetSuite | SAP | Sanity | Figma | eProcurement Solution - Punchout cXML Integration | integratori io - Celigo Integration Platform » B2B | B2C | C2C | C2B | B2G | G2B | G2C | C2G | B2E | D2C | B2B2C | B2G2C | Marketplace development | Web3 | Telegram bots » Salesforce B2C Commerce Cloud (SFCC) | OCAPI (Open Commerce API) | SFRA (Storefront Reference Architecture) » Wordpress Solutions Architect: WooCommerce | LearnDash | Divi | Kadence | The events calendar | Give » UNIX / Linux: Setup | Configuration from the scratch | Administration | AWS | Azure | GCP (Google Cloud Platform) | OVHcloud | Digitalocean | WPEngine | Contabo » CI/CD Magento 2 infrastructure: Kubernetes - k8s / Terraform » Trading Bot | AI Crypto tracker | HFT - HIGH-FREQUENCY TRADING Bots with support of 100+ exchanges. » Fiat + Crypto payment gateways development; » Data Scraping: docker-browser-behavior-based data extraction solutions for target websites | with delivery of structured output in required formats such as CSV | YAML | and others, e.g. products.csv » VPN | OpenVPN | Openconnect | XRAY | VLESS | XTLS | REALITY | XUDP | PLUX | XTLS | XHTTP | REALITY | uTLS | PassWall | v2ray | ShadowSocks | socks5 | Shadowrocket | Amnezia | singbox | mihomo 💡 Dmitrii’s Delivery Performance: 1. Takes full ownership of technical solutions and consistently ensures delivery of the desired results. 2. Accountable for end-to-end solution delivery, with a strong focus on quality, reliability, and business value. Dmitrii provides a free comprehensive analysis. Send Dmitrii a message to discuss your platform, current challenges, and business goals