Looking for professionalism, fast delivery times, strict adherence to software development best practices, and deep expertise in today’s top technologies? Then let’s talk. I’m Alain Alvarez, a Senior .NET Engineer with over 20 years of experience delivering scalable, maintainable, and high-performance solutions across startups, agencies, and enterprise environments. I specialize in clean architecture and full-stack development using C#, ASP.NET Core, and the .NET Framework, with hands-on experience in both modernizing legacy systems and building cloud-native platforms from the ground up. I apply Domain-Driven Design (DDD) and Clean Architecture principles to ensure robust, modular, and future-ready code. I’ve also expanded my tech stack to include modern tools such as React, Next.js, Node.js, NestJS, and MongoDB, enabling me to bridge traditional enterprise backends with high-performance, user-friendly frontend and modern micro-services. Key Expertise: • Full-stack development with C#, ASP.NET Core, .NET Framework, Web APIs • UI/UX development with React, Blazor, Next.js • Scalable backend services with Node.js, NestJS • Data modeling with SQL Server and MongoDB • Cloud deployment using Azure Functions, App Services, API Management • Secure identity with OAuth 2.0, OpenID Connect • Automated testing and delivery pipelines with xUnit, GitHub Actions, CI/CD I bring not just technical skills, but a strategic mindset and a commitment to delivering clean, reliable, and high-quality software on time, and aligned with your business goals. Let’s build something solid, smart, and scalable.

I build and fix web apps, mobile apps, cloud infrastructure, AI integrations, and data pipelines. ASP.NET Core, React Native, PHP, Laravel, WordPress, AWS, Azure, Docker, Kubernetes, OpenAI, LLM, RAG — 16+ years, 100+ projects for clients across the US, UK, Australia, and Canada. Whether you need to build a custom web application from scratch, fix and scale an existing system, launch an iOS and Android app, integrate AI/LLM into your product, migrate to the cloud, or set up CI/CD pipelines — I've done it, and I can show you relevant past work within 24 hours. Here's what clients typically hire me for: • Build & scale web applications — ASP.NET Core, ASP.NET MVC, PHP, Laravel, React JS, REST APIs, admin panels, dashboards, internal tools. Fix performance issues, refactor legacy code, upgrade old .NET or PHP systems. • Develop & launch mobile apps — Cross-platform iOS and Android apps using React Native. Push notifications, GPS, camera, Bluetooth, payments. Bug fixes, performance improvements, App Store and Google Play submissions. • AI & LLM integration — Add AI capabilities to existing applications using OpenAI GPT, Google Gemini, Anthropic Claude. Build RAG pipelines for document Q&A, vector search with pgvector, AI agents with tool calling, LLM evaluation and observability. Built ArNir — a production-ready enterprise AI platform with 14 .NET projects, React frontends, and Docker deployment. • Build & customize eCommerce stores — NopCommerce, AbleCommerce, Magento, Shopify, WooCommerce. Custom plugins, payment gateway integrations, platform migrations, broken checkout fixes. • Integrate systems & automate workflows — ERP, CRM, EDI integrations. Stripe, PayPal, Twilio, SendGrid, QuickBooks, Google APIs, Airtable, OnFleet. Python, Bash, PowerShell automation scripts. SharePoint apps and Office 365 integrations. • Set up & manage cloud infrastructure — AWS, Azure, Google Cloud, DigitalOcean, Oracle Cloud. Docker containers, Kubernetes clusters. CI/CD pipelines with Jenkins, GitHub Actions, Azure DevOps. On-premise to cloud migrations. • Build data pipelines & reporting — ETL/ELT pipelines, Snowflake data warehouses, Azure Data Factory, PySpark, Apache Spark. Power BI, SSRS, Crystal Reports dashboards. SQL Server, MySQL, PostgreSQL, MongoDB, Oracle database design, query optimization, and migrations. Industries: Healthcare · Logistics · Legal · Financial Services · eCommerce · Education · Manufacturing · Media · Real Estate · Insurance · Food & Beverage · Non-Profit I take full ownership — architecture, development, testing, deployment, and post-launch support. One senior developer who understands your business problem, not just the code. Describe your project and I'll share a relevant case study or outline a solution approach within 24 hours.

I am a professional freelancer with THIRD PARTY LIABILITY INSURANCE for over two and a half million dollars, so you are in safe hands. I am Microsoft Certified Trainer, Office 365, GCP, AWS, and Azure Expert. Honored as Microsoft Most Valuable Professional in Azure area. I cover architecting, security, administrating, and migration of all three major clouds – Azure, AWS, and GCP. Apart from the main area of Cloud expert in the field of infrastructure servers Windows Server 2003-2016, Microsoft Active Directory, Hyper-V Private Cloud, IIS, System Center, SQL. Private Cloud, System Center, Hyper-V, Open Stack Expert, and all Microsoft products Expert. Linux Server administrator. I am the holder of certificates: • pSeries AIX UNIX Support • First Certificate in English • PRINCE2 Practitioner • Microsoft Certified: Azure Administrator Associate • Microsoft® Certified Solutions Expert: Cloud Platform and Infrastructure • Microsoft® Certified Solutions Associate: Cloud Platform • Microsoft® Certified Solutions Expert: Productivity • Microsoft® Certified Solutions Expert: Data Management and Analytics • Microsoft® Certified Solutions Associate: Windows Server 2016 • Microsoft® Certified Solutions Associate: Windows 10 • Microsoft Specialist: Configuring Windows Devices • Microsoft Specialist: Architecting Microsoft Azure Solutions • Microsoft Certified Solutions Developer: Azure Solutions Architect • Microsoft Specialist: Developing Microsoft Azure Solutions • Microsoft® Certified Solutions Expert: Data Platform • Microsoft Specialist: Implementing Microsoft Azure Infrastructure Solutions • Microsoft® Certified Solutions Associate: Office 365 • Microsoft® Certified Solutions Expert: Private Cloud • Microsoft® Certified Solutions Expert: Messaging • Microsoft® Certified Solutions Associate: SQL Server 2012/2014 • Microsoft® Certified Solutions Associate: Windows Server 2012 • Microsoft® Certified Solutions Expert: Server Infrastructure • Microsoft® Certified IT Professional: Enterprise Administrator on Windows Server 2008 • Microsoft® Certified Solutions Associate: Windows Server 2008 • Microsoft® Certified Technology Specialist: Windows Server 2008 Applications • Microsoft® Certified Technology Specialist: Windows Server 2008 Network • Microsoft® Certified Technology Specialist: Windows Server 2008 Active Directory • Microsoft® Certified Technology Specialist: Microsoft Exchange Server 2010

I am a .NET full stack developer and software architect with 8+ years of experience building scalable web applications using ASP.NET Core, Angular, C#, TypeScript, Microsoft SQL Server, Azure, and modern cloud technologies. Across 35+ projects in defence, renewable energy, fintech, e-commerce, and enterprise SaaS development I have delivered systems that handle real production load, not just demo traffic. What I build as a .NET full stack developer My deepest work is in ASP.NET Core back-end development. I spent years as the lead .NET full stack developer on a platform managing thousands of wind and solar energy installations globally, processing massive volumes of real-time data, building microservices on .NET Core and Azure, and reducing critical downtime incidents by over 40% through improved monitoring and analytics. On another project I built a Loan Origination System in ASP.NET Core that automated the entire loan lifecycle from lead capture to loan issuance, integrating with HubSpot, external CRMs, and RESTful APIs on Microsoft Azure. The client went from manual processing to a fully automated fintech pipeline handling 550+ active applications, cutting processing time by 60%. ASP.NET developer work across enterprise and defence Some of my most complex work as an ASP.NET developer has been in defence and industrial sectors. I modernized a legacy web platform for a company managing 36 high-uptime naval fleet assets, warships that cannot afford downtime. The ASP.NET MVC rebuild reduced manual reporting time by 70% and enabled real-time asset tracking, secure document storage, and streamlined access to sensitive operational data. On another engagement I took over a large workplace management SaaS development project built by a single developer who had left, no documentation, weekly outages, daily hotfixes. I stabilized the ASP.NET Core back-end, eliminated the performance bottlenecks, and reduced unplanned incidents from weekly to zero within two months. ASP.NET Zero and enterprise acceleration ASP.NET Zero is my go-to when enterprise clients need multi-tenancy, role-based permissions, and audit logging without spending the first three sprints on boilerplate. I have used it to accelerate SaaS development on projects in pharma automation, workplace management software, and industrial IoT, cutting initial setup time by 3+ weeks and letting the team focus on actual business logic from day one. On average my clients ship their first production release 30% faster on ASP.NET Zero compared to building from scratch. Full-stack web development across the whole system As a .NET full stack developer I own the entire delivery, ASP.NET Core back-end, Angular or React front-end with clean web design, Microsoft SQL Server and PostgreSQL database design, and Azure infrastructure. I built a Shopify fulfillment tool in ASP.NET Core and React that reduced packing mistakes to zero and cut order processing time by 35%, integrating barcode scanning, inventory management, and connections to 8+ shipping providers. I delivered a fleet management system in .NET Core and Angular handling 1,250+ assets and 845 active rentals simultaneously, with automated reporting that saved operations teams 10+ hours per week. On the front end I work with Angular, React, TypeScript, JavaScript, Next.js, HTML, CSS, Bootstrap, and RESTful API integration, connecting them cleanly to .NET back-ends without creating maintenance nightmares six months later. C# and .NET developer engineering that goes deep Back-end development across 8 years as a .NET developer means I have seen what breaks under real load. I cut a US e-commerce platform's page load time from 8 seconds to 2, directly contributing to a 2x increase in sales. I optimize Microsoft SQL Server and PostgreSQL queries, regularly reducing query execution times by 60-80%, design database schemas that support complex reporting, and build API integration layers connecting .NET systems to CRMs, ERPs, payment gateways, and third-party platforms. I work with Node.js for event-driven services, TypeScript to keep large codebases maintainable, and Python or PHP when projects need scripting layers alongside the core .NET stack. For web development infrastructure I use Microsoft Azure and Amazon Web Services, Docker containers, microservices architecture, and CI/CD pipelines that reduced deployment time by 50% for several enterprise clients. Why clients come back I have worked with clients in Germany, the USA, Australia, the UK, Norway, Denmark, and the Netherlands across renewable energy, defence, fintech, e-commerce, and industrial IoT. What stays the same: I ask the right questions before writing the first line of code, flag problems early, and deliver .NET full stack applications that work in production, not just in development. If you are scaling a SaaS product, modernizing a legacy system, or need a .NET full stack developer your team can build on, let us talk.

I am a certified professional with unique skillset and profound knowledge of DBA, Solution Architecture, SysOps and DevOps. With over 15 years of hands-on experience, I am designing, building, managing and optimizing various databases and environments for Startups, SMBs and Fortune 100 Enterprises from different industries. Reviews have it! ✅ DBA Expertise: 𝐃𝐁 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Oracle 9i, 10g, 11g, 12c - 19c on premise and in Cloud, MS SQL, PostgreSQL, MySQL, SQL Server, and more. 𝐂𝐥𝐮𝐬𝐭𝐞𝐫𝐰𝐚𝐫𝐞: Automatic Storage Management (ASM), Real Application Clusters (RAC) 𝐎𝐫𝐚𝐜𝐥𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Exadata, ZDLRA, Exalogic, ODA 𝐌𝐢𝐝𝐝𝐥𝐞𝐰𝐚𝐫𝐞 𝐚𝐧𝐝 𝐄𝐑𝐏 𝐚𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: NetSuite, Oracle E-Business Suite, Weblogic Server, Apache Tomcat, Glassfish, OBIEE, Discoverer, Fusion Middleware, OAM/IDM 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞-𝐜𝐥𝐚𝐬𝐬 𝐁𝐚𝐜𝐤𝐮𝐩, 𝐑𝐞𝐜𝐨𝐯𝐞𝐫𝐲 𝐚𝐧𝐝 𝐑𝐞𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧: RMAN, Dataguard, Golden Gate 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: bash, SQL, PL/SQL, Python 𝐂𝐥𝐨𝐮𝐝 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: Oracle Cloud, AWS, Azure 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Unix and Linux, Windows (on premise or in Cloud) ✅ DevOps, SysOps Expertise: 𝐒𝐲𝐬𝐭𝐞𝐦 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: Scalable, secure, and highly available designs tailored to business needs. 𝐒𝐲𝐬𝐎𝐩𝐬 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: Managing virtual machines, containers, storage, backup, migration, networking, and databases. 𝐃𝐞𝐯𝐎𝐩𝐬 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: CI/CD, infrastructure as code (IaC), tools like Jenkins, GitLab CI/CD, Azure DevOps, etc. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Data encryption, access control, IAM, GDPR, HIPAA, PCI-DSS compliance. Choosing me as your IT Architect, DBA, SysOps, and DevOps Engineer means you gain a trusted partner who will go the extra mile to deliver exceptional results and help your organisation thrive. Let's discuss your requirements and get you the best solution. Contact me today!

I am a senior database, data architecture, and BI consultant with 42 years of experience designing business systems, databases, data warehouses, integrations, and analytics solutions across industries such as retail, SaaS, healthcare, asset management, banking, manufacturing, services, e-commerce, and finance. My strongest value is connecting business needs with reliable technical architecture. I help clients move from scattered data, fragile reports, and manual processes to analytical environments that are fast, reliable, maintainable, and ready for BI or AI. Core strengths • Database architecture, SQL, performance tuning, and data modeling • Data warehouse design, ETL/ELT, and automated data pipelines • Power BI dashboards, semantic models, DAX, and Power Query • BigQuery, SQL Server, SingleStore, PostgreSQL, MySQL, Oracle, and Microsoft Fabric • Python, APIs, Google Cloud, AWS, Azure, and cloud-based data workflows • KPI definition, metric validation, executive reporting, and AI-ready data layers Unlike many dashboard-focused consultants, I come from a deep database and systems background. I design the structure behind the report: schemas, relationships, ETL routines, indexing strategy, validation rules, semantic models, and performance optimization. This helps clients avoid fragile dashboards built on messy data and instead create a solid data foundation for reporting, analytics, and AI. AI-ready data architecture Many companies try to connect AI directly to raw databases, but that often creates slow, expensive, and unreliable answers. My approach is different: I build governed analytical layers where definitions, relationships, KPIs, and business rules are explicit. This improves trust, reduces cost, increases performance, and allows AI to work with business-approved metrics rather than guessing from raw tables. Recent project examples - Database Performance / DBA Leadership I am responsible as DBA and Database Lead for a massive infrastructure using SingleStore and SQL Server, working at billion-record scale with the responsibility to deliver query results in less than 1 second. This involves database design, indexing strategy, stored procedures, and continuous optimization of high-volume workloads. - AI-Connected Semantic Model with Power BI and Claude I designed a cloud-based analytical solution using Cloud Run, Python, GitHub/Artifacts, Cloud Scheduler, BigQuery, and Power BI semantic models, enabling Claude to connect to governed business data. The solution included specialized skills to query the semantic model, respect business rules, and provide accurate answers with high performance and data reliability. - AI Data Enrichment on Google Cloud I designed and implemented a serverless AI enrichment pipeline using Google Cloud Run, Cloud Tasks, Cloud Scheduler, Python, and BigQuery. The client needed to enrich millions of company records using GROK AI within a tight processing window while controlling BigQuery costs. The result was millions of enrichment tasks completed within SLA, stable throughput, structured validation, and more than 90% reduction in BigQuery costs. - IoT Data Aggregation with BigQuery I built a Google Cloud solution to collect high-frequency sensor data from thousands of sensors through an API every three minutes. The architecture used Cloud Run, Python, GitHub/Artifacts, Cloud Scheduler, and BigQuery, creating an automated and scalable data warehouse process running for months without manual intervention. - SaaS Product Analytics For a SaaS company, I transformed complex Firebase / Firestore JSON data into structured analytical tables in BigQuery. I created the ETL routines, designed the analytical foundation, and delivered Power BI dashboards for product usage, engagement, trial behavior, feature adoption, and conversion analysis. - Retail Operations Reporting I built an automated reporting system for a large restaurant chain, processing POS data with Python ETL, cloud automation, AWS infrastructure, and Power BI applications. The system delivered daily KPI reporting for sales, revenue, labor, service times, customer behavior, and operational performance. - Asset Management Analytics I developed a portfolio monitoring solution using Python ETL, Reorg API, AWS, database design, and Power BI. The solution tracked liquidity, EBITDA, leverage, and other investment KPIs, giving the client daily updated information for portfolio analysis and decision-making.

Senior Full-Stack Developer with 12+ years of experience building scalable, secure, and high-performance software for enterprises and fast-moving startups. I specialize in backend-heavy systems, cloud architecture, and complex integrations where reliability, performance, and clean design matter. I have delivered production systems for global organizations including the United Nations, enterprise platforms, and SaaS startups across AI, finance, identity, telecom, and e-commerce. 🚀 Proven Impact • Built large-scale linguistic platforms for the United Nations used by translators and editors worldwide • Created an Azure Marketplace Managed Application that automates employee lifecycle management by syncing worker data from UKG or ADP into Microsoft Entra ID and on-premise Active Directory • Developed high-volume APIs, SDKs, and webhook systems, including a REST SDK delivered in six languages and a Shopify platform handling millions of requests per day • Delivered complex OAuth, SSO, payment, VOIP, and third-party integrations across REST, GraphQL, and SOAP/WCF • Modernized and stabilized legacy systems under real production load, improving performance, scalability, and reliability 🧠 Core Strengths • Backend Engineering, .NET, Node.js, Python, Go • API Design, REST, GraphQL, SOAP, OAuth, Webhooks, Microservices • Cloud & DevOps, Azure, AWS, GCP, Docker, Kubernetes, CI/CD • Databases, SQL Server, PostgreSQL, MySQL, MongoDB • Enterprise Integrations, Identity, Automation, AI-powered workflows 💼 How I Work • Strong ownership mindset, I treat your product like my own • Clear communication, proactive updates, no surprises • Production-ready code with long-term maintainability in mind • Comfortable working independently or with distributed teams If you need a senior engineer who can take complex requirements and turn them into stable, scalable solutions, I am ready to help. Let's build something solid.

With over 25 years of experience, I am a seasoned database professional specializing in database design and development, ETL, and data quality. My expertise spans multiple platforms, including Microsoft SQL Server, Oracle, PostgreSQL, and MySQL. I am passionate about transforming raw data into meaningful, actionable information that drives business success. Database Design and Development My career has been built on designing and developing robust and scalable database solutions. I've led numerous projects from inception to completion, including a complex telecom application with over 700 tables and millions of rows. My focus is on creating efficient, reliable data architectures that support critical business functions and ensure data integrity. I am an expert in query optimization and performance tuning. In a recent project, I took a query that had degrading performance and completely rewrote it, improving its average execution time by over 80%. This type of work is a core part of my value, ensuring that database applications run smoothly and efficiently. Data Cleaning and ETL A significant part of my work involves Extract, Transform, and Load (ETL) processes, particularly in the realm of data cleaning. I have extensive experience developing automated solutions to identify and fix missing or incorrect data, ensuring the accuracy and reliability of production databases. In one notable project, I automated a manual data modification process for a telecom inventory database. What once took the inventory team days of manual work was reduced to a process that ran in less than an hour, significantly increasing efficiency and reducing the risk of human error. This is a clear example of my ability to build effective, automated data pipelines. I am located in the Eastern USA and have experience working with clients globally, from the USA to New Zealand. My Upwork "Top Rated Plus" status attests to my stellar feedback on large and long-term contracts. Please feel free to connect to discuss how I can help you with your next data-driven project.

With over 15 years of experience in software engineering, cloud architecture, and enterprise application development, I help startups, SMBs, and enterprise organizations build secure, scalable, and intelligent software solutions using Microsoft Azure and modern AI technologies. My expertise spans Azure Enterprise, Azure Development, Azure AI, AI Development, AI Integration, cloud-native architecture, and full-stack application development. I have successfully delivered enterprise software, SaaS platforms, cloud migration projects, AI-powered applications, and digital transformation initiatives for clients across healthcare, finance, insurance, manufacturing, retail, education, and professional services. I specialize in designing and developing enterprise-grade solutions on Microsoft Azure using Azure App Services, Azure Functions, Azure SQL Database, Azure Storage, Azure API Management, Azure Service Bus, Azure Key Vault, Azure Virtual Machines, Azure Kubernetes Service (AKS), Azure Virtual Desktop, Azure DevOps, Microsoft Entra ID (Azure Active Directory), Microsoft 365, Microsoft Teams, Microsoft Graph API, and Azure Marketplace. From architecting highly available cloud infrastructure to developing scalable APIs and distributed systems, I build solutions that are secure, reliable, cost-effective, and designed to support long-term business growth. Artificial Intelligence is transforming every industry, and I help businesses leverage Azure AI and Generative AI to build intelligent products that create measurable business value. My experience includes Azure OpenAI Service, Azure AI Foundry, Azure Cognitive Services, OpenAI GPT models, AI Agents, AI Chatbots, Voice AI, Conversational AI, Retrieval-Augmented Generation (RAG), Prompt Engineering, Natural Language Processing (NLP), Speech-to-Text, Text-to-Speech, Document Intelligence, AI-powered search, workflow automation, and enterprise knowledge management systems. Whether you need an AI assistant, customer support chatbot, enterprise copilot, document processing solution, or AI integration within your existing software, I can design and implement scalable AI solutions tailored to your business needs. My technical expertise includes C#, .NET, ASP.NET Core, .NET Core, Node.js, REST API Development, Microservices Architecture, Entity Framework Core, SQL Server, Azure SQL Database, React, Blazor, JavaScript, TypeScript, HTML5, CSS3, API Integration, and enterprise backend development. I follow modern software engineering practices, including clean architecture, scalable system design, secure authentication, performance optimization, automated deployments, CI/CD pipelines, Infrastructure as Code using ARM, Bicep, and Terraform, containerization with Docker, orchestration using Kubernetes, and cloud-native application development. Over the years, I have worked on enterprise management systems, healthcare platforms, Microsoft 365 integrations, Microsoft Teams applications, cloud modernization projects, AI-powered SaaS products, workflow automation platforms, business intelligence solutions, Azure Virtual Desktop implementations, secure enterprise identity management, API ecosystems, marketplace applications, and cloud-based digital products. I understand both the technical and business aspects of software development, allowing me to recommend the right architecture, optimize cloud infrastructure, improve application performance, reduce operational costs, and ensure every solution is built with scalability, maintainability, and security in mind. My core expertise includes Microsoft Azure, Azure Enterprise, Azure Development, Azure AI, Azure OpenAI Service, Azure AI Foundry, Azure Cognitive Services, AI Development, AI Integration, Generative AI, OpenAI, GPT, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), Machine Learning, Cloud Architecture, Solution Architecture, Enterprise Software Development, Microsoft 365, Microsoft Teams, Microsoft Graph API, Azure DevOps, Azure SQL Database, Azure App Services, Azure Functions, Azure Kubernetes Service (AKS), Azure Virtual Desktop, Azure API Management, Azure Key Vault, Azure Service Bus, C#, .NET, ASP.NET Core, Node.js, REST APIs, Microservices, React, Blazor, SQL Server, API Integration, Cloud Migration, SaaS Development, Digital Transformation, Enterprise Application Development, and AI-powered business solutions. I believe successful software development is about much more than writing code. It starts with understanding your business objectives, choosing the right technology stack, designing scalable architecture, and delivering reliable solutions that continue to create value as your business grows. I focus on building long-term partnerships with my clients through transparent communication, dependable delivery, technical excellence, and a commitment to quality.

Most teams hire a data engineer to build the pipelines, then a separate AI engineer to build on top of them, and lose weeks in the handoff. I do both. I'm Hammad Saleem, with 9+ years architecting cloud data infrastructure and 5+ years building the production AI systems that run on it. The data foundation (Snowflake, Databricks, Redshift, BigQuery, Airflow, multi-cloud ETL/ELT) and the AI layer (RAG, multi-agent orchestration, fine-tuned LLMs, vector search) come from one owner, architecture through deployment. That overlap of data engineering, cloud/MLOps, and LLM/agent specialization in one person is exactly what most profiles only cover half of. A few systems I've shipped recently: - A multi-agent inventory-intelligence platform for 9 automotive clients (including JLR, Penske, Holman): 5 specialized agents handling self-correcting SQL generation against Redshift, Looker integration, and reporting across 128K to 10M token contexts. - A pharma marketing AI serving 11 brands: fine-tuned request routing, multi-modal asset generation, and per-client vector stores for brand-compliant, citation-backed retrieval with HCP/DTC segmentation. - An enterprise multimodal AI platform on Llama 3.1 8B with custom LoRA fine-tuning (85.6% accuracy) and a RAG system over 480+ documents returning 3 to 4x more relevant results than baseline search. The data foundation under that work runs just as deep: pipelines processing ~3B rows/day at a national telecom, a 45% AWS cost reduction through rightsizing and storage tiering, an 80% cut in pipeline processing time, and multi-cloud financial reconciliation across Salesforce, SAP, and ad platforms that removed 70% of manual effort. Where I fit best: - Teams with messy or scattered data that needs to become a reliable foundation for analytics and AI. - Companies past the prototype stage that need an AI system to actually hold up in production: observability, retries, cost control, evaluation. - Founders and CTOs who want one engineer accountable from data ingestion through the deployed AI feature, including the full-stack/API layer that exposes it to users. How I work: I scope to outcomes, design for cost and scale before writing code, instrument everything (Opik, CloudWatch), and leave you with systems your team can run without me. I'm equally comfortable owning architecture solo or embedding with an existing team. Core stack: Python, SQL · AWS (Lambda, ECS/EKS, Redshift, S3, Step Functions) · GCP (BigQuery, Pub/Sub) · Snowflake · Databricks · Airflow, Prefect · OpenAI, Anthropic Claude, Gemini, Llama · LangChain, LlamaIndex, multi-agent orchestration, RAG, vector databases · Docker, Terraform, CI/CD. Certifications: Microsoft Azure AI Fundamentals · Microsoft Azure Data Fundamentals · IBM Machine Learning with Python · IBM Data Analysis with Python. If you're building data infrastructure, an AI product, or both, and you'd rather have one senior owner than stitch together two, send me a note with what you're trying to ship. I'll tell you honestly how I'd approach it and whether I'm the right fit.