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I am a software engineering leader with over 10 years of experience building and scaling full-stack web and mobile applications. I have worked across backend, frontend, mobile, cloud, and DevOps, progressing from software engineer to CTO-level roles. My experience includes Python, Django, NodeJS, React.js React Native, Vue.js, Ruby on Rails, Java EE, Asp.NET, Elixir, and Wordpress, along with databases like Elasticsearch and Cassandra. I have designed and deployed scalable systems on AWS using Docker, CI/CD pipelines, and modern DevOps architecture. I enjoy leading teams, designing system architecture, and delivering reliable, production-ready software solutions for complex business needs.
I've been teaching programming since 2018 to people of different ages. I'm specialized mostly in teaching how to start programming from scratch: basics of programming languages + basics of computer science. But I always have in mind a long-term perspective for my students and try to develop useful skills just from the start of our work.
I'm a **polyglot fullstack software developer** (*I'm able to effectively work with multiple languages, tools, and frameworks*) with over 13+ years of industry experience in web application development. I'm also an instructor and mentor in various bootcamps having lead class cohorts, mentored groups of students and 1:1 tutoring sessions. I'm experienced in **Python**, **ECMAScript** (Javascript or Node.js), **Java**, **C#** **Ruby**, **PHP**, and even **Scala**. I work in both frontend and backend spectrums of the web stack, so whether you're debugging something in React.js or you're stuck on a complex SQL query, I'm more than happy to help in your code debugging adventures. My instruction style is that I like to guide the student towards learning *how* to solve rather than simply giving you the solution - I don't believe a student should be stuck on always referring back to a senior developer to get unblocked, but should be empowered to solve their own problems. Now that's real mentorship!
Senior software engineer with 5+ years of experience in backend web technologies including Ruby on Rails, Python, Go, and MySQL. Currently at Tesla, previously EasyPost. Bachelor's in Computer Science. Main strengths include architecting applications and backend API development, have also worked in fullstack roles. The best part of software engineering is that you never stop learning new things.
**Currently leading the engineering team at the biggest online conference company in the world!** Software Engineer since 14. Background in ERP application development. Consulting/mentoring teams to achieve faster development pace, remove technical debt and improve their programming and architectural design abilites.
Technical cofounder, board member, and seasoned operator with experience building and growing early stage companies (pre-seed to late Series), large scale government and commercial projects, and nonprofits.
My name is Luis de Jesús López Hernández, and I'm a 40-year-old Web Applications Engineer and Game Developer. I'm based in Mérida, Yucatán, México. My academic background includes a Master's Degree in Design and Comprehensive Development of Videogames from UNIAT University of Advanced Technologies (2020-2022). Before that, I earned an Engineering in Strategic Information Systems from the University of Mayab (2002-2006). Artificial Intelligence & Process Acceleration: I am currently assisting the company in the area of Artificial Intelligence, specifically by accelerating processes in administrative matters and in software development. I utilize 'vibe coding' for this purpose and implement Agents for certain processes.
I have 8 years of professional experience with software development mostly with Ruby on Rails, React and AWS. In my latest role as a staff software engineer I had the responsibility of keeping our platform performant and resilient while guiding a cross-funcional team of software engineers, designers, and product members to achieve company wide goals.
I'm a seasoned software developer with over 20 years of experience and I specialize in Mac and iOS application development, bolstered by a strong foundation in C/C++ and web/database technologies. I've effectively led diverse projects, enhancing performance and user experience, demonstrating adaptability across various tech domains. My background includes mentoring budding computer scientists and contributing to complex tech solutions. With a passion for continuous learning and problem-solving, I bring a unique blend of practical experience and innovative thinking to every project.
AI Systems Architect, GTME, CSA, SRE, and Fractional CTO helping organizations leverage custom AI, autonomous agents, and cloud infrastructure to build products faster, automate operations, and scale efficiently. Expert in custom AI model development, fine-tuning, RAG implementations, multi-agent systems, AI-powered workflow automation, LLM integration, cloud architecture, cybersecurity, and high-availability SaaS operations. With decades of hands-on engineering experience and deep expertise in modern AI tooling, I bridge the gap between traditional software engineering and next-generation AI systems. I build production-ready AI solutions that deliver measurable business outcomes—not demos, prototypes, or hype. From custom AI platforms and autonomous agent ecosystems to cloud-native SaaS infrastructure and mission-critical production environments, I help organizations deploy secure, scalable systems that create immediate operational leverage. Extensive NDA obligations limit what I can publicly share, but my experience spans startups, growth-stage companies, enterprise organizations, and large-scale SaaS platforms operating under demanding uptime, privacy, and security requirements.
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The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Ruby project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Ruby request on Codementor, check out our article.
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