✔ 100% Job Success ✔ 15+ years experience ✔ 4000+ hours worked on Upwork with excellent client feedback. I'm an experienced software engineer who has spent 11+ years designing and developing various win, web and mobile applications. My main principals are the following: - Clean code, - Automation of processes, - Lack of nothings. Important to say, that I always try to find simple and elegant solutions for complex technical problems. Satisfied customers and thankful clients are the main factors that can confirm my professionalism ● General ⠀⠀✔ C# ✔ .Net ✔ Design Patterns ✔ MS Visual Studio ✔ DevExpress XAF ● Web Dev ⠀⠀✔ ASP.NET MVC ✔ ASP.NET Web API ✔ WCF ✔ JavaScript ✔ jQuery ● ORM ⠀⠀✔ Entity Framework (Code-First, Database First) ✔ XPO ● Database ⠀⠀✔ T-SQL ✔ MS SQL ✔ MySQL ✔ MongoDB ✔ Oracle ✔ PostgreSQL ● Version Control System ⠀⠀✔ TFS ✔ Git ● Reports ⠀⠀✔ Crystal Reports ✔ Fast Report ✔ DevExpress Reports ● CMS ⠀⠀✔ Umbraco ● Other skills ⠀⠀✔ Data Scraping ✔ Parsing Feel free to contact to know more about my work and how I can help you.

Proven Software Expert with over 19,900 hours of experience as a Remote Developer / Engineer in technologies such as .NET/.NET Core, JavaScript, Angular, Node.js, Python, AWS, Azure, SQL Server, and more. Check my Upwork reviews for client testimonials. Highly skilled in the design and development of Object-Oriented Software with extensive experience in the following technologies: - JavaScript Frameworks: Knockout JS, Polymer, Node.JS, AngularJS, React, Sencha Ext JS - Languages: C#, VB.NET, Javascript, Python - Web Development: ASP.NET, ASP.NET MVC, ASP.NET Web API, WCF, RestFul APIs - APIs: HubSpot, Twilio, Retell AI, Facebook, Linkedin, Twitter, Proofpoint, Urban Airship API, JIRA Cloud REST API, TestRail API, Slack Web API, Azure REST API, Google Sheets API. - Infrastructure as Code (IaC): AWS CDK, CloudFormation, Pulumi, Terraform - Containerization: Docker, AWS ECR, Azure Container Registry - Cloud Services: AWS EC2, SQS, SNS, Secrets Manager, Lambda, CodeDeploy, Azure - Continuous Integration: GitHub Workflows/Actions, TeamCity, TFS, Jenkins - Databases: Supabase, SQL Server, SQL Server Reporting Services, SQL Server Management Objects, PostgreSQL, MySQL, MongoDB, Snowflake - ORM: XPO, NHibernate, Entity Framework, Dapper, IdeaBlade - Payment Gateway Integrations: Stripe, Merchant Partner, Payment Express, Moneris - Monitoring and Logging: Kibana, Loggly, DataDog, AppOptics, Retrace - Automation and BPM: N8N, Appian, RPA, BPM (Business Process Management), AgilePoint BPMS - Application Development Frameworks: DevExpress eXpressApp Framework (XAF), CSLA.NET, Visual Studio LightSwitch - Build Tools: NAnt, MSBuild - Windows Development: Windows Service Applications, Windows Workflow Foundation (WF) - Version Control: GIT, TFS, Subversion, Perforce - Project Management: ClickUp, JIRA, FogBugz, Pivotal Tracker, TFS, Bitbucket, GitHub, Atlassian's Confluence/GreenHopper/Bonfire - UI and Libraries: DevExpress Libraries & Controls, DevExtreme - Data Formats: XML, JSON - Office Integration: VSTO, InfoPath/Word/Excel/Visio Add-Ins, VBA, Google Apps Script - Development Methodologies: Agile Methodologies, Kanban Native Language: Spanish

I am an accomplished software developer with over 20 years of experience. My journey has been marked by innovation, leadership, and a relentless pursuit of excellence. As a Senior Software Developer: My expertise extends beyond lines of code. I thrive on solving complex problems, architecting robust solutions, and delivering software that transforms businesses. I also leverage modern AI-guided development using GitHub Copilot, Claude, and Cursor to accelerate development cycles and write cleaner, more efficient code. My toolkit includes C#, .NET Core, ASP.NET MVC, Blazor, Razor, React, and Angular, alongside extensive experience with ETL integrations and data exchange workflows. Whether it’s building scalable APIs or crafting intuitive user interfaces, I am passionate about creating software that empowers users and drives efficiency. Business Owner and Architect: In 2017, I founded HamilTEK Solutions, a Columbus-based software development company. Under my leadership, HamilTEK has become synonymous with quality and innovation. My commitment to modular design ensures that every application is not just functional but also maintainable and adaptable. My microservices architectures, powered by .NET Core and deployed on Azure, have transformed businesses across industries. Agile Advocate and Team Leader: My agile mindset permeates every project. As a DevOps champion, I orchestrate seamless CI/CD pipelines, automate testing, and accelerate delivery. But it’s not just about tools and processes—it’s about people. I lead cross-functional teams, fostering collaboration, creativity, and a shared vision. My discovery meetings with end-users reveal insights that shape software solutions aligned with real-world needs. Legacy Systems Redevelopment: Modernization is my forte. I breathe new life into legacy systems, migrating them to .NET Core/Blazor and ensuring they remain relevant. My legacy isn’t just in code; it’s in the impact I leave on organizations, streamlining operations, enhancing user experiences, and driving growth.

Hi, I am Eric! I am a passionate Full Stack Software Engineer with over a decade of hands-on experience in designing, developing, managing, and deploying robust Enterprise Resource Planning (ERP) systems for the insurance and financial sectors. I specialize in building scalable, high-performance applications that drive operational efficiency and business growth, I excel in: • C# for backend development • MySQL and SQL for database design and optimization • DevExpress eXpressApp Framework (XAF) for rapid application development • Agile Project Management Certified in PRINCE2, PSM and JIRA, I thrive at the intersection of technical expertise and strategic delivery. My professional interests include: • Leading projects with Agile methodologies to ensure flexibility and faster value delivery • Collaborating with diverse, cross-cultural teams around the globe • Delivering impactful solutions that prioritize value addition and exceptional customer satisfaction I'm always open to connecting with like-minded professionals in fintech, insurance tech, or ERP development. Let's discuss how we can drive innovation together!

Senior Full-Stack, Mobile & Industrial IoT Engineer with 12+ years of hands-on software development experience. Specializing in architecting scalable mobile/web ecosystems, enterprise desktop software, and complex hardware-software integrations. Whether you need a full-featured cross-platform app, an enterprise ERP module, or a custom industrial automation system, I deliver robust, production-ready solutions. CORE EXPERTISE & TECHNICAL CAPABILITIES: 1. Cross-Platform & Native Mobile Development: • Flutter (iOS & Android) — Complete app ecosystem architecture, live Play Store & App Store deployments. • Native Mobile (Java, Objective-C, Kotlin). • Real-time apps, payment gateway integration, push notifications, and background service optimization. 2. Web & Backend Engineering: • PHP / Laravel, Node.js, Java, C#. • Scalable RESTful API design, multi-vendor platforms (Dokan, WooCommerce), custom WordPress development. • Relational database optimization (MySQL, Oracle SQL triggers, procedures, and complex query tuning). 3. Enterprise & Systems Software: • C# / .NET development with DevExpress suite and eXpressApp Framework (XAF). • Custom ERP/CRM modules, business logic automation, and advanced data reporting. 4. Industrial IoT, Hardware & Automation (Industry 4.0): • Industrial Printers Integration: Markem-Imaje, Zebra, TSC coders via TCP/IP, Serial, NGPCL, and DCP protocols. • Smart Cards & RFID: Access control systems, Contact (ISO/IEC 7816) & Contactless/NFC (Mifare), Active/Passive RFID tag tracking, APDU protocols. • Telemetry Systems: Real-time environmental sensor data processing, automated threshold alert engines, and emergency notification pipelines. WHY WORK WITH ME? • End-to-End Delivery: From system architecture and hardware protocol integration to final store deployment. • Battle-Tested Solutions: Proven track record delivering live projects across international markets (USA, Turkey, Taiwan, Uruguay, Azerbaijan). • High-Performance Focus: Clean code, fault-tolerant logic, and reliable maintenance. Let’s discuss your project goals and turn your requirements into an efficient, production-ready solution!