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We are looking for an experienced developer to build a web-based portal that connects directly to our ERP system running on Microsoft SQL Server. Scope: * Order listing and tracking * Stock management views * Customer account (balance / transactions) * Basic reporting dashboards CRITICAL REQUIREMENTS: * There is NO existing API. * The developer must directly work with the ERP database (MSSQL) and design the required data access layer. * Ability to understand complex ERP database schemas is mandatory. * If necessary, the developer should design and implement a custom API layer from scratch. TECHNICAL EXPECTATIONS: * Strong experience with MSSQL (queries, JOINs, indexing, performance optimization) * Experience with ERP database structures * Ability to write clean, scalable backend architecture * Experience with ASP.NET, .NET Core, or PHP (open to stack suggestions) PREFERRED: * Previous ERP integration projects (must be explained clearly) * Experience building secure data access layers on top of legacy systems IMPORTANT: * Generic / copy-paste / low-effort proposals will be ignored. * Please do not apply if you do not have real experience with ERP and SQL-based integrations. * Only candidates who follow the instructions below will be considered. WHEN APPLYING, YOU MUST INCLUDE: 1. A real example of an ERP + SQL integration you have worked on (brief but specific) 2. A sample SQL query using at least one JOIN (realistic example, not trivial) 3. Brief explanation of how you would approach performance optimization in large ERP databases Proposals missing any of the above will be automatically rejected. Shortlisted candidates will receive detailed project documentation.
ID do Projeto: 40314048
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Ativo há 19 dias
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102 freelancers estão ofertando em média $572 USD for esse trabalho

⭐⭐⭐⭐⭐ CnELIndia stands as your one-stop solution for your ERP-Linked Web Portal project. Being in the industry for over 18 years, we've mastered the art of creating custom CRM and ERP portals from scratch. Specifically, we've designed seamless integrations with different SQL-based ERPs, allowing us to directly understand and fetch critical data from the server without APIs. Our proficiency with MSSQL, ASP.NET, and PHP would be highly applicable here, enabling us to navigate complex database schemas and develop a well-optimized data access layer tailored to your specific needs. We can create a backend architecture that is not only clean and modular but also fast and scalable, essential for any ERP system. In terms of performance optimization for large ERP databases like yours, we employ a multi-faceted approach. It begins by deeply analyzing your database tables and queries for possible bottlenecks or optimization needs. Using strategic indexing strategies, query optimization techniques including advanced JOINs strategies, and continuously employing rigorous testing sc
$500 USD em 7 dias
9,0
9,0

Hi, You need a portal that talks directly to your ERP system—that's the critical integration piece. Before we build, what's your current ERP platform, and do you have API documentation ready, or are we reverse-engineering the connection? Let's talk details. Best Regards, Hasan
$250 USD em 21 dias
8,7
8,7

ERP Integration | MSSQL | SQL Queries | Data Access Layer | Web Portal | Backend Development Hi, I’ve worked on ERP systems where there was no API, and we had to directly connect with MSSQL databases to build portals for orders, stock, and customer data. So I clearly understand what you’re trying to achieve here. For example, in one project, I built a web dashboard on top of an existing ERP where we handled order tracking, inventory views, and account balances directly from SQL Server with optimized queries and indexing. For performance, I usually focus on: • Proper indexing on frequently used columns • Optimized JOINs (avoiding unnecessary data load) • Query caching where possible • Creating a clean API/data layer to reduce direct DB hits I’m comfortable understanding complex ERP schemas and building a secure, scalable layer on top of them. If this sounds aligned, I’d love to discuss your ERP structure and start working on it. Thanks! Purnima
$750 USD em 20 dias
7,9
7,9

⭐⭐⭐⭐⭐ Build a Web Portal for Your ERP System Using Microsoft SQL Server ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you're looking for an experienced developer to create a web-based portal for your ERP system. You don't need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects for ERP systems. I will directly work with your ERP database, ensuring efficient data access and management. ➡️ Why Me? I can easily build your web portal as I have 5 years of experience in ERP integrations and database management. My expertise includes SQL queries, data access layer design, and backend architecture. Additionally, I have a strong grip on ASP.NET and performance optimization, which will ensure a smooth and efficient portal. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to speaking with you soon! ➡️ Skills & Experience: ✅ Microsoft SQL Server ✅ ERP System Integration ✅ Data Access Layer Design ✅ ASP.NET Development ✅ .NET Core ✅ PHP Development ✅ SQL Query Optimization ✅ JOIN Operations ✅ Database Indexing ✅ Performance Tuning ✅ Clean Code Practices ✅ Reporting Dashboards Waiting for your response! Best Regards, Zohaib
$350 USD em 2 dias
7,8
7,8

As a technology partner with a focus on custom software development and a specialization in providing tailored solutions, my team at WellSpring Infotech is well-suited to handle your ERP-linked web portal project. We have extensive experience in dealing with complex database schemas incorporating Microsoft SQL Server-a skillset that will be indispensable for building an API concept from scratch, as specified in the project requirements. Additionally, our proficiency includes writing clean, scalable backend architecture through MySQL, PHP, and SQL. Our prior work aligns perfectly with this project. We've had successful stints in various industries including eCommerce and fintech where we've handled large-scale databases for crucial operations like stock management, order tracking, and basic reporting - all elements central to your ERP system. One specific example that comes to mind is developing a web portal similar to the one you require for a major logistics company running an ERP system like yours; it dealt with tracking orders from the warehouse to the final delivery step by integrating with their existing Microsoft SQL Server-based databases. Thanks....
$750 USD em 7 dias
7,8
7,8

Hello, With proven expertise in Database Administration, Design, and MySQL, I am well-versed in the skills necessary for not only understanding complex ERP database schemas, but also in designing and implementing data access layers from scratch. I have been fortunate enough to work on multiple projects involving integrations with ERPs and SQL optimization techniques. As an example, at a previous project I worked on for a manufacturing company, I designed an automated inventory management system that connected their ERP with their e-commerce website, resulting in seamless stock management and tracking. To give you a sample SQL query utilizing JOIN clause - consider this - a question like "List all customers and orders they placed along with the products related" would benefit from JOINing relevant tables such as 'Customers', 'Orders', and 'Products'. It would create a comprehensive view of the customer journey, their order history, and even item-specific details if required. As for optimizing performance in large-scale ERP databases, my approach involves analyzing execution plans, indexing strategies and query patterns. I profile queries to identify bottlenecks & improvise them with proper indices & JOINING techniques. Additionally, I would perform indexing normalization to eliminate redundancies and fine-tune database configurations to scale up concurrent users’ operations without sacrificing speed. With Regards!
$750 USD em 7 dias
6,6
6,6

Hello, your plan to build a web portal that surfaces orders, stock, and customer balances directly from your MSSQL ERP will unlock faster decisions and healthier cash flow. This is my speciality I'm Iosif Peterfi, 15+ years delivering web apps and ERP-backed solutions across Europe. I translate complex data into clear, outcome-focused tools for business teams. My approach: I'll design a secure data access layer that reads directly from the ERP tables (no API yet), and deliver intuitive order tracking, stock views, and customer accounts, plus dashboards. If needed, I'll implement a lightweight API. Deliverables, milestones, and risk controls will be defined to keep scope tight and outcomes measurable. There is no API yet; I'll architect around that reality and keep changes minimal for business continuity. Similar project: a regional manufacturer needed an MSSQL ERP connected to a customer portal. We delivered real-time order status and stock visibility, cutting lookup time by about 50% and reducing data-entry errors by a third. ERP + SQL integration example: I've connected an MSSQL ERP to a web portal for unified orders, customers, and inventory views, with secure data access layered above legacy tables. A sample approach would join orders, customers, and inventory to present a single view of open orders and available stock.
$4.200 USD em 21 dias
6,4
6,4

With my extensive skillset in ASP, MySQL and PHP, I am a perfect fit for your ERP-Linked Web Portal project. Having worked on numerous backend database projects including ERP systems, I understand the complex structures and deep integration requirements involved. In fact, one of my most memorable projects was creating a web interface for an ERP system with Microsoft SQL Server backend. To give you an example, I successfully integrated an ERP system with its SQL Server database to create a real-time inventory management and reporting solution for a manufacturing company. Using my expertise in JOINs and optimization techniques, I implemented efficient queries to retrieve and display vast amounts of data. Additionally, on performance optimization for large databases like the one that powers your ERP system, I can ensure fast query execution through proper indexing, query optimization techniques combined with my proficient knowledge of the MSSQL platform. Moreover, I am highly experienced in writing clean, scalable code and have previously created custom API layers from scratch when the need arises. My clients appreciate my approach to understanding both their business requirements as well as their existing legacy systems in order to create effective solutions that bridge any gaps. Choosing me ensures not only a skilled developer but a dedicated professional who is bound to deliver high-quality results within your specified timeframe.
$250 USD em 1 dia
6,5
6,5

Hello, With my extensive experience in both backend and frontend web development, along with my proficiency in SQL-based databases, I believe I'm the perfect candidate for your ERP-Linked Web Portal project. Having worked on complex projects that require deep understanding of data schemas and thorough knowledge of SQL (including queries, JOINs, indexing etc.), I can ensure an efficient and robust design for your web portal while working harmoniously with your ERP system. In terms of performance optimization in large ERP databases, I'd first scrutinize the existing structure to identify any bottlenecks. Using appropriate indexing strategies and query optimizations, I would fine-tune the database's response time and throughput. Additionally, my familiarity with various web development frameworks like Laravel and Symfony enables me to structure clean and scalable backend architectures which will ensure efficient data access across all the required modules. To meet the critical requirements of this project, I'll directly work on your Microsoft SQL Server without any existing API and integrate it seamlessly into the web platform we build. Since I specialize in Vue.js/jQuery + Laravel/Yii2/symfony stack, as well as having a proficiency in ASP.NET and .NET Core which are also relevant for your project, you can trust in my ability to deliver the system you envisioned. With Regards!
$750 USD em 7 dias
6,0
6,0

Hi, I’ve successfully integrated ERP systems with SQL Server in the past, like in a project where I developed a reporting dashboard that optimized data retrieval processes. To approach performance optimization, I focus on careful indexing and writing efficient JOIN queries to minimize load times. For example, I recently ran a query that pulled data from orders and customers using INNER JOINs, which significantly increased data retrieval speed. I specialize in MSSQL, ASP.NET, and designing secure data access layers. I’m ready to tackle your project and ensure smooth integration. Let me know if you want to proceed! Best, Manoj
$500 USD em 7 dias
5,9
5,9

Hello!, I am a US-based senior software engineer with extensive experience in PHP, ASP.NET, SQL, and database design. I’ve carefully read your project description for the ERP-Linked Web Portal Build, and I understand the importance of creating a reliable and efficient web-based portal that connects directly to your ERP system. With over 15 years of experience, I've successfully built similar solutions that not only meet technical specifications but also enhance user experience and business outcomes. I believe in structured milestones and clear communication, which ensures we stay aligned throughout the project. Could you please clarify the following questions to help me better understand the project? 1. What specific ERP system will the portal connect to, and are there any integration challenges you've encountered? 2. Are there particular functionalities you envision for the portal, such as user roles or data visualization features? I’m committed to delivering a solution that truly aligns with your goals. Let’s chat about how I can help bring your vision to life! Best, James Zappi
$500 USD em 5 dias
5,2
5,2

Directly interfacing with a complex ERP system carries the inherent risk of data corruption or inconsistent reporting if the underlying database schema is not thoroughly comprehended and handled with precision. Your project demands expert navigation of Microsoft SQL Server with sophisticated JOIN operations and indexing strategies, alongside crafting a bespoke API that seamlessly bridges the portal to your ERP without an existing interface. At DigitaSyndicate, a UK-based agency, we don't just write code; we architect infrastructure to protect your investment. Our approach ensures that each solution is tailored with local accountability, maintaining stringent security and reliability standards rooted in exacting UK practices. Have you scrutinised how your proposed data access layer will maintain transactional integrity and performance under concurrent user loads when querying your ERP directly? Casper M. DigitaSyndicate
$550 USD em 14 dias
5,4
5,4

Hello, I’ve built robust, scalable backends that talk directly to MSSQL ERP databases and deliver secure, maintainable data access layers. I specialize in understanding complex ERP schemas, designing lean data models, and delivering responsive portals without relying on external APIs when not available. In a recent project for a manufacturing client, I created an ASP.NET Core backend that connected to their MSSQL ERP, implemented a custom data access layer, and delivered modules for order listing, stock views, customer balances, and dashboards. I designed careful indexing strategies and optimized queries to support reporting with sub-second responses on multi-million-row tables, while preserving data integrity and security. I can handle your ERP-linked portal end to end, connect directly to MSSQL, build the data layer, and implement a secure, scalable backend (ASP.NET Core or PHP as preferred). I’ll deliver with clean architecture, thorough testing, and solid performance. Please share any ERP schema diagrams you have and the preferred tech stack so I can tailor the plan. I’m ready to start and can propose a detailed timeline within 24 hours. Best regards, Billy Bryan
$450 USD em 5 dias
5,1
5,1

Hello, I have reviewed the details of your project. i will develop the web portal using asp.net core with a clean backend that connects directly to your mssql database. the portal will provide order listing, stock management, customer accounts, and reporting dashboards by designing a secure data access layer that queries tables with joins and indexes for performance. complex erp schemas will be analyzed to extract relationships and ensure accurate, real-time data display without an existing api. if needed, i will create a custom api layer on top of the erp to standardize access for the portal, ensuring scalability and maintainability. all queries will be optimized with indexing, filtered joins, and caching where possible to handle large datasets. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$500 USD em 7 dias
5,3
5,3

Hello, I am Vishal Maharaj, a seasoned developer with 20 years of expertise in PHP, SQL, MySQL, ASP.NET, and .NET Core. I have carefully reviewed your project requirements and am confident in my ability to deliver a robust web portal linked to your ERP system. To ensure successful completion, I will directly work with the ERP database, designing a custom data access layer and implementing any necessary API from scratch. My approach involves leveraging my strong MSSQL skills, understanding complex ERP schemas, and optimizing database performance through efficient queries and indexing. I have prior experience in ERP integrations, ensuring a secure data access layer on legacy systems. I look forward to discussing the project details further. Cheers, Vishal Maharaj
$500 USD em 5 dias
5,8
5,8

Hi, hope you are well. I went through your project details and found that I worked on almost the exact same task about two months ago. I am a skilled freelancer with 6+ years of experience in PHP, MySQL and I can deliver the results as quickly as possible. You can visit my profile to check my latest work and recent reviews. Connect in chat to discuss details and next steps. Warm regards.
$750 USD em 7 dias
4,9
4,9

Hello, I went through your requirement. Working directly with an ERP database on MSSQL without an API requires careful structure, and I’ve handled similar integrations where data had to be exposed cleanly and efficiently. A few quick questions: Is there any documentation for the ERP schema, or will mapping be required? What is the approx database size and load? Do you have a preferred tech stack for the backend layer? Looking forward to hearing back from you and discussing this in the chat. Portfolio: https://www.freelancer.in/u/Rupal878 Rupal Saini
$500 USD em 7 dias
5,0
5,0

With my decade-long experience in state-of-the-art web development, particularly with .NET Core and ASP.NET languages, I am fully equipped to manage your ERP-Linked Web Portal project. Exemplary expertise in the very SQL-based integrations you require, I have hands-on experience in designing comprehensive data access layers from scratch. This includes optimizing performance in large ERP databases by utilizing strong SQL querying ability with appropriate JOINs and indexing techniques. One notable project I spearheaded involved integrating an Oracle-based ERP system with a web portal, which bears a striking resemblance to your requirements. In this instance, I played a key role in design and implementation of custom API layer for seamless connection between the web portal and Oracle database. This was paired with an efficient stock management system, order tracking tool, reporting dashboards and comprehensive customer accounting - all successfully implemented without the aid of an existing API. Further validating my suitability, I hold not just understanding but also deep knowledge of complex ERP database schemas, having previously worked on similar architectures. Given this level of competence, combined with my skillset in PHP should you choose to explore that stack direction, I am confident I can deliver a top-tier solution for this project on time and within budget. It would be a pleasure to collaborate with you on the developing this game-changing tool!
$500 USD em 7 dias
5,7
5,7

Hello, I’m excited about the opportunity to work on your web-based portal project connecting to your ERP system. I understand the critical need for a seamless integration with Microsoft SQL Server, especially given the absence of an existing API. With over five years of experience in ERP integrations and a strong background in MSSQL, I have successfully developed similar projects where I designed custom data access layers and optimized complex database schemas. My expertise includes writing efficient queries, utilizing JOINs effectively, and implementing indexing strategies for enhanced performance. To ensure the success of your project, I would approach it as follows: - Analyze the existing ERP database schema to understand its complexities. - Design and implement a custom data access layer tailored to your needs. - Develop the web portal functionalities, including order tracking and stock management. - Create reporting dashboards and ensure the security of data access. I’m eager to bring my experience to your project and am confident in delivering high-quality results within your timeline. Please let me know a convenient time for us to discuss this further, or I can start immediately if you prefer. Thank you for considering my application!
$250 USD em 7 dias
4,7
4,7

Hello Already have something live to show you I am professional mobile software engineer with skills including Web Design, PHP, Website Development, Content Writing, Elementor, HTML, WordPress and Website Design. Please send a message to discuss more about this project. Always happy to hear from you Thanks
$500 USD em 7 dias
4,5
4,5

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