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I build AI-powered applications that ship to production and survive contact with real users. 𝟏𝟔 𝐲𝐞𝐚𝐫𝐬 of full-stack engineering, now focused on AI agents, RAG, and LLM integrations. I work on a .NET, React, and Angular foundation, which means I can also handle the parts that aren't glamorous: auth, deployment, databases, and a UI that doesn't make users cry. WHAT I BUILD ▸ AI Agents. Multi-step, tool-using agents that actually finish what you start them on. ▸ RAG Applications. Chat-with-your-docs, internal knowledge assistants, semantic search over private data. ▸ LLM Integrations. Adding GPT, Claude, Gemini, or open models into existing apps without breaking the rest of the codebase. ▸ Full-stack web apps. Angular or React on the front, .NET on the back, cloud-native on Azure or AWS. ▸ Legacy modernization. Moving 15-to-20-year-old codebases into the present. I've done this three times, including a beloved baseball simulator with millions of simulated games. STACK I WORK IN Backend: .NET 8, C#, ASP.NET Core, Entity Framework, Python, Go, Java Frontend: React, Angular, TypeScript, RxJS, Storybook, design systems AI: OpenAI, Anthropic Claude, Google Gemini, LangChain, vector databases, RAG pipelines, agent frameworks Data: SQL Server, Redis, MongoDB Cloud: Azure (Web Apps, Functions, SQL, Storage), AWS (Lambda, EKS), Terraform, Kubernetes Auth: JWT, OAuth, Auth0, ASP.NET Core Identity RECENT RESULTS ✓ Built and shipped a Google Gemini-powered AI system for automated outbound patient communications inside a physical therapy EMR platform, deployed across a network of rehabilitation hospitals and university health systems. ✓ Rebuilt a 20-year-old baseball simulation app (millions of simulated games, loyal user base) from classic ASP to .NET 8 and Angular on Azure. Improved 90-day user retention by over 10% and unlocked a new design system for the product team. ✓ Architected and shipped a multi-tenant SaaS platform for the event registration industry, migrating from on-prem data centers to Azure PaaS. Grew revenue 10% through direct client work and cut IT infrastructure spend by 40%. ✓ Led cloud architecture for a national crop insurance carrier across AWS and Azure. Set up Terraform-managed infrastructure, mentored a team of dev leads, and shipped a Figma-to-production design system bridging design, product, and engineering. WHAT A RECENT CLIENT SAID "I hired Adam specifically because of his wide variety of experience and his profound level of skill. Over 18 months he proved himself to be an active and helpful member of the team. His versatility and engagement was crucial to our growth. I would enthusiastically recommend him." — Jason, BaseHit HOW I WORK I show up, I listen, I write code that holds up under load. I'm comfortable being the senior voice in the room or the quiet pair of hands, whichever the project actually needs. I won't pretend to know something I don't, and I won't talk you into AI when a SQL query would do the job. If you're building something AI-powered and want someone who can also handle the unglamorous parts (the auth, the deployment, the schema, the UI that doesn't make users cry), let's talk.

Web application developer with 8 years of experience building web applications. Certified Caspio developer with 5 years of experience building small to complex web application using the Caspio platform. Have experience with the following: -HTML, CSS, PHP, JavaScript, jQuery, MySQL, Database and system design, Caspio platform expert, WordPress/Wix, Web design, GIT, Agile methodology. I can also lead a project, estimate development hours and create a timeline to set customer expectations.

Upwork's Top Rated | Seasoned Software Developer with over 18 years of experience in designing, developing, and delivering cutting-edge software solutions. Proficient in a wide array of programming languages, frameworks, and tools, with a proven track record of successfully completing diverse projects across industries. Adept at leading teams, optimizing processes, and driving innovation in software development.

Hi, my name is Andres. I am a full stack developer with over 15 years of experience building web applications from the ground up. I specialize in data driven AngularJS and Angular applications with NodeJS backends. If you are passionate about your vision, let's talk, I will be happy to help make it a reality.

Thank you for visiting my profile! I am a multi-talented developer and software engineer.Over the last 6 years, I’ve taken my clients' ideas and visions and turned them into powerful, efficient software solutions that showcase my expertise and passion.My goal is to make your vision come to life with efficient, user-friendly designs. I offer expertise in: ● Full Stack Web Development ● Custom Software Solutions ● API Development and Integration ● Cloud Services (AWS, Azure) ● SEO Optimization & Google Rankings ● WordPress & Shopify Customization ● Video Editing ●Blockchain ● Mobile APP I can handle projects involving any of these aspects and am dedicated to my work, regardless of the size, budget, or complexity. I’ve worked with large corporations, small businesses, and individual clients, and I promise the same communication, passion, and vision will go into your project regardless of which category you fall into.I am committed to delivering high-quality solutions on time and within budget. Let’s discuss how I can help you achieve your goals and deliver outstanding results for your project! looking forward to working together!

I'm a full-stack developer with 20+ years of experience building web apps, SaaS platforms, APIs, and more. I take a project from idea to launch, and I'm here to maintain the work onward — requirements, estimate, build, go-live, and ongoing support. This is my full-time work, not a side project — I'm usually available 7AM–7PM Mountain Time daily, and can dedicate up to ~30 hours a week to your project, more when a timeline calls for it. Core skills: React · Next.js · Node · TypeScript · C# / .NET Core · PostgreSQL · SQL Server · MySQL · Capacitor (cross-platform mobile) · Electron (cross-platform desktop) · Stripe · REST API integrations · PayloadCMS · machine-learning integration I build modern apps with React and Node — web apps, SaaS platforms, APIs, and integrations. I also build cross-platform mobile apps that ship to iOS and Android from a single codebase — faster to build and cheaper to maintain than two separate native apps. And similarly, cross-platform desktop applications for Windows, macOS, and Linux. I bring two decades of Microsoft stack experience, making me comfortable across different stacks and problem spaces. A few things that set my work apart: • End-to-end ownership. Requirements, estimates, prototyping, provisioning, launch, and maintenance — one accountable owner across every stage, so nothing falls through the cracks. • A running start. I bring proven foundations I already run in production — sign-in, registration, password reset, user management — and fold them in at no cost for new projects, so your budget goes to what's unique to your product and we reach something live and demonstrable fast. • Machine-learning integration. I put data-science models into real applications, including models that run locally so your proprietary data never leaves your environment and there's no per-prediction cost. • An adaptable problem-solver. Twenty years across many stacks and domains means I pick up unfamiliar tools and codebases quickly — and I'm upfront about what I haven't done rather than overselling. • AI-assisted development. I use Claude Code with a custom set of guidance I've built for planning, building, testing, and review — it makes me faster and more thorough. • You work directly with me. The person you talk to is the person writing the code. How I work: we start with a conversation, and I capture your requirements and raise the questions that matter. Once scope is clear, I send an itemized estimate — larger builds broken into phases so cost and progress stay visible. From there I develop, provision, launch, and support the app. Anything that would change the budget gets raised before the time is spent — never a surprise on an invoice. I often suggest starting with smaller milestones — enough to get comfortable working together and see real results fast — then expanding from there. My rates are fair, typically below market, because I'd rather make a worthwhile project work than price myself out of it. Whatever you're trying to build or solve, send me a message and let's talk.