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# Full-Stack Web Engineer | Lyon, France Experienced engineer with expertise in modern web technologies (React, Node.js, Angular, Spring). Passionate about sharing knowledge through mentoring. Previously tutored Java concepts at Upwork. Strong focus on clean code and best practices. **Core Skills**: JavaScript/TypeScript, Java, React, React Native, Spring Boot **Industries**: Real Estate, Transportation, Energy, Education
Full-stack software craftsman and technical leader with over 15 years of experience. Equally adept at system design, programming, technical leadership, mentorship, and business collaboration. Have a wide breadth of technical experience, but specialize in backend API development, relational databases, and web applications. Passionate about simplicity and efficiency. I have worked at over a dozen companies large and small, in a handful of different domains. Also participated in hundreds of interviews, about half-and-half as the interviewer and the interviewee. I have given dozens of talks and training sessions on a variety of topics, mostly focusing on distributed systems, caching, and testing. My top skills are Java, SQL, testing, and refactoring. I have experience with formal academic and professional mentorship, and would love to help you skill up, solve a problem, or just nerd out with you today!
**Mobile App Expert | iOS (Swift/SwiftUI) & .NET MAUI Developer** Hi, I’m **Kevin McNeish** — a senior software engineer, mentor, and author with *25+ years of experience* helping developers and companies build robust mobile apps and backend systems. I specialize in: - **Mobile**: iOS (Swift, SwiftUI, UIKit), .NET MAUI, Xamarin - **Backend**: APIs, SQL Server, Entity Framework, .NET Core - **AI**: Integrating ChatGPT, OpenAI APIs, and intelligent assistants into apps Whether you're stuck on a tricky SwiftUI layout, architecting a MAUI app, or looking to level up your dev skills or career — *I’m here to help.* **Let’s work together to move your project forward with speed and confidence.**
👋 Hi, I’m Denys, a .NET Software Architect with nearly 10 years of experience designing scalable, high‑performance systems. I specialize in microservices architecture, system modernization, and cloud‑native solutions on Azure. I mentor developers at every stage: Junior devs get hands‑on guidance with clean architecture, SOLID principles, unit testing and their first cloud deployments. Mid‑level engineers dive into event‑driven and asynchronous patterns, performance profiling, caching strategies, and CI/CD pipelines. Senior engineers and aspiring architects work on strategic domain modeling, large‑scale refactoring, migration roadmaps, and leadership skills for driving innovation. Whether it’s code reviews, pair programming, design workshops or leadership coaching, I’ll share practical insights and real‑world examples to help you build robust, maintainable systems—and grow your career. Let’s build something great together! 🚀
I'm a NET Core developer to the bones. My co-workers always describe me as a having integrity, reliable person and I am able to create a trustful environment where candid feedback can flow freely. I took the biggest step from the last job, where I was hired to review and audit the code and the technical solution of the product under development. My contribution to this project was pushing the product from an intentional state into something that created pleasure and happiness for nearly every stakeholder. In addition, In my free time, I'm engaged in an open-source community. My contribution ranges from explaining, PR reviews, fixing bugs, and creating new features with the result of creating one of the most loved solutions in that space (or niche).
* in 2000 as a founding engineer, I helped to build a local version of [Morningstar.com](http://morningstar.com/) from the idea to IPO and scale the development team from 1 to 10; I've administered Linux & FreeBSD servers, managed a complex PostrgreSQL database, wrote triggers and implemented a custom MVC web application using perl, * in 2005-2010 worked as a senior Java developer for a large international supply chain solutions provider (Syncron - [https://www.syncron.com/](https://www.syncron.com/)); * since 2010 have worked on +100 various consulting projects, using Rails, Python, Django, Flask, PHP, Objective-C, Rust, C++, Typescript, Java, Scala, Odoo and more; clients include Alation (https://www.alation.com/), Lonza (https://www.lonza.com/), Vantage Surgical (https://vantage.healthcare/), FurnitureFinders (https://www.furniturefinders.com/), Tanzle (https://tanzle.com/) * 25 years of software development experience; full-stack, devops but also focused on the product & user experience/value, * I'm based in LA
I strongly believe that Code Quality Matters. I hold myself to high standards even in smaller projects, and in my spare time I keep learning about the latest technologies and architectural design patterns. My favorite topics are performance optimization and concurrency, but I am keen on and proficient in a wide variety of technologies (especially if it has something to do with C# or React which I love). Even though most of my work experience revolves around building ASP.NET Core Web APIs and React/Redux(/TypeScript) frontends, I have had projects involving Windows Forms, WPF, Xamarin Forms / Android, numerous console apps, etc. Besides learning, I also love to share my knowledge with others. My favorite part of leading the development team at my current workplace is being able to mentor junior devs who share my passion in ever improving their design, code quality and performance. Check out my self-built blog where I document my developer journey: https://marcelltoth.net
#### Empowering Developers: From Novice to Expert Are you looking to embark on your software development journey or elevate your existing skills? With expertise in Python, Java, TypeScript/JavaScript, Rust, Dart/Flutter, Haskell and Clojure. I offer comprehensive guidance tailored to your needs. My approach combines technical proficiency with essential soft skills, ensuring you're well-equipped for the industry's challenges. #### Beyond Learning: Practical Implementation For those seeking hands-on assistance, I'm available for projects of various scales. Whether it's implementing new features, debugging complex issues, or optimizing database performance with Postgres and MongoDB, I bring a wealth of experience to the table. My commitment to clean code, SOLID principles, and multi-layered architecture ensures robust, maintainable solutions. #### Navigating the AI Landscape In the rapidly evolving field of artificial intelligence, I offer insights into the workings of Large Language Models (LLMs) and their applications. From crafting effective prompts to exploring the potential of open-source models, I can guide you through the intricacies of AI integration in your projects. Let's unlock the power of AI together and push the boundaries of what's possible in software development. #### Cutting-Edge Methodologies My unique approach to software development incorporates algebraic design principles and property-based testing. By employing a multi-tiered model that seamlessly integrates declarative functional programming, object-oriented design, and imperative coding, I create systems that are both elegant and efficient. This methodology allows for clear, abstract specifications that translate into practical, high-performance code. *Technologies / Skills* - Clean Architecture - Python - Java - TypeScript/JavaScript - Rust - Dart/Flutter - Haskell - Clojure - PostGreSQL - MongoDB - SOLID principles - TDD / BDD / ATDD - LLMs - ChatGPT, Claude, Llama
• More than 19 years of overall software development experience having expertise in all stages of the whole software development life cycle. • Microsoft Certified Solution Developer in .Net • Proficient in Object Oriented Analysis and Design(OOAD), Object Oriented Programming (OOP), ,design patterns, software development best practices, Agile development Methodology, and TDD • Excellent interpersonal, communication and organizational skills, productive relationships by working effectively with team members at all levels; easily adapt to new environments and with great potential to learn. • Have a great passion about technology and always try to keep up by reading tech blogs, checking out developer podcasts and webcasts, and attending developer training classes
I am a hands-on software architect with over 13 years of experience in backend engineering and team leadership in ad-tech, e-commerce pre-seed and series-A start-ups. I have modernized tech stacks and mentored teams, improving their development speeds and quality while reducing their maintenance cost and time to market. Seeking to leverage my unique overlap of leadership, engineering, mentoring and architecture skills for a strong architect, principal engineering or technical coach role.
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