Hire senior Ruby on Rails developers

I'm a software engineer with 14+ years experience in: - Application design (requirements and spec definition and agreement, domain-driven design, object-oriented design, data structure management, ETL processes, etc.) - Application engineering (Rails, NodeJS, React/Vue, frontend) - Server administration (Linux, Nginx, Apache, etc.) - Containerization (Kubernetes, EKS, Docker) - Cloud infrastructure (AWS, GCP, Terraform) - Cloud and infrastructure security (CPI-810, etc.) - Compliance (CCPA, GDPA, CPNI, etc.) At my last role, I was lead engineer on a team of five that developed and maintained an LMS system used internally at Verizon by hundreds of thousands of users. I'm funny, smart, a good listener and a good teacher. I like working in a team and getting things done. I like finding processes and ways to work that make things more efficient, fun, and engaging. I just left a job at Verizon voluntarily and am open to to hourly or project-based work.

Ken is a seasoned software developer specializing in Ruby on Rails since 2018 and React since 2022, building high-quality applications with a strong emphasis on performance and scalability. Before transitioning into software development, Ken built a solid foundation in customer engineering at Boeing Launch Services and FARO Technologies. This experience ingrained in him a deep appreciation for customer needs, which now drives his approach to software design and development. Ken takes a customer-first approach while maintaining the focus required to deliver complex features on time. He is a strong advocate for clear communication, ensuring that potential roadblocks and critical details are addressed proactively—well before they become costly issues. With a passion for efficiency and problem-solving, Ken asks the right questions early in the discovery phase to uncover requirements gaps and resolve bottlenecks. His proactive nature, strong extraversion, and ability to navigate cross-functional collaboration set him apart, enabling him to keep projects on track even in complex environments. By applying rigorous due diligence before a project launches, Ken minimizes risks and maximizes efficiency. His "can-do" attitude and commitment to continuous learning make him a valuable asset to any technical team.

I am a Senior Software Engineer specializing in Ruby on Rails with over 5 years of experience. I excel in developing scalable web applications, API integrations, and cloud services. My expertise includes JavaScript frameworks (NextJS, VueJS, ReactJS), AWS, SQL, PostgreSQL, and MongoDB. Key Projects: TechXMation:Optimized data export processes, enhanced Sidekiq job performance, and improved internal communications. Sendoso: Developed API request signature verification, ReactJS features, and integrated Rails with GraphQL. Freelance Work:Upgraded Stripe Payment API, created Sendoso API logs dashboard, and developed a Chrome extension for Hubspot integration. Certifications: Hotwire: Reactive Ruby on Rails Applications (June 2024) -MYSQL Basic:** (March 2024) Contact: Email:hammadkhanxcm@gmail.com LinkedIn:Hammad Khan](https://www.linkedin.com/in/hammad-khan-008101123/) GitHub:hammadxcm](https://github.com/hammadxcm) I deliver high-quality, maintainable code and am dedicated to continuous learning and innovation.

Strong believer of Open Source Clean Code development, focusing in quality and reusability. Passionate of technology innovations, always trying to be up-to-date in the IT world.

I'm a senior Rails developer with over 20 years of experience, including being part of the Rails community since its first public release. I'm the author of two Ruby on Rails books and I bring a versatile skillset spanning architecture design, backend development, performance optimisation, and product strategy. I love working with small teams where I can contribute across the entire application development process. Over my career, I’ve built complete applications for both venture-backed startups, and multinationals. I’ve also served as CTO at two startups, leading teams and scaling platforms from the ground up. My technical expertise centres on Rails, but extends to Elixir Phoenix and LiveView for projects requiring real-time capabilities. I'm experienced in modern frontend development with Tailwind CSS, and in modernising legacy Rails applications through seamless upgrades and Hotwire integration. While the majority of my projects are built from scratch, I also have experience leveraging frameworks like Bullet Train and Jumpstart Pro to accelerate development. I'm available for freelance or fractional roles where I can bring both technical expertise and strategic insight to help businesses create lasting, maintainable, and scalable solutions that solve real-world problems.

Seasoned IT professional with 14 years of experience spearheading enterprise software development initiatives. As a lead developer, I've consistently delivered robust solutions while mentoring teams and architecting scalable applications. My expertise spans full-stack development using .Net, Ruby on Rails, Angular and Flutter complemented by deep knowledge in software architecture and database design. Throughout my career, I've played a pivotal role in developing enterprise-grade applications that drive business efficiency and innovation. I combine technical excellence with a strategic mindset, ensuring that architectural decisions align with long-term business objectives. My approach emphasizes clean code, scalable design patterns, and performance optimization. I thrive in dynamic environments where I can leverage my diverse skill set to solve complex technical challenges while leading teams to successful project delivery. Passionate about staying current with emerging technologies and best practices in software development, I bring both technical depth and leadership acumen to every project. Core competencies: • Software Engineering Expert. Advanced proficiency in full-cycle enterprise application development. Built scalable, high-performance systems using modern tools like .NET, Ruby on Rails, Angular, and React. Designed robust software and database architectures for mission-critical solutions; optimized code and infrastructure to achieve 30-50% efficiency gains. Led cross-functional teams to deliver complex projects, mentoring junior developers and aligning technical execution with business goals. • Agile Leader & Scrum Coach. Seasoned Scrum Master with experience driving Agile transformations in Fortune 500 matrix organizations and fast-paced startups. Coached teams on iterative delivery, backlog refinement, and sprint planning. Conducted tailored training workshops on Agile frameworks, DevOps practices, and project management strategies for teams of 5–50+ members. Spearheaded adoption of CI/CD pipelines to accelerate release cycles by 40%.

With over 17 years of experience in software engineering, I’ve built, scaled, and optimized web applications for companies ranging from startups to enterprises. My background in Ruby on Rails, TDD, cloud infrastructure and multiple front-end technologies allows me to deliver robust, high-performance solutions aligned with business objectives. One of my proudest achievements was building a WebRTC video player to automate video interviews. This solution went live and helped thousands of candidates secure new jobs. In addition to my technical expertise, I bring valuable leadership experience to the table. I am deeply passionate about mentoring and enjoy helping junior developers grow into skilled professionals. Empowering others to reach their potential is something I find incredibly fulfilling. I’ve led teams, guided junior developers, and managed complex migration projects, including platform transitions during company acquisitions. My problem-solving mindset ensures that I can drive success in challenging situations. Additionally, I can take on a product engineering role. I not only know how to build exceptional software, but also understand how to align technology with business goals. If you’re looking for someone who can architect scalable solutions, lead teams, and drive innovation, I would love to connect!

I’m a Rails developer with over 12 years of experience in software development, including 10+ years working hands-on with Ruby on Rails. Along the way, I’ve built all kinds of applications—automation tools, ERPs, inventory management systems, insurtech platforms, social media apps, and even AI-integrated solutions. I’ve always focused on creating large-scale, high-performance apps that can handle thousands of concurrent records without breaking a sweat. I’ve worked with both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases, making sure they’re set up for speed and scalability. On the backend, I’m well-versed in Sidekiq and RabbitMQ for background processing, and on the frontend, I use tools like Hotwire, Turbo, and Stimulus to make apps fast and interactive. When it comes to deployment, I’ve got plenty of experience with Google Cloud, AWS, and Fly.io, which lets me build infrastructure that’s as reliable as it is scalable. The recent apps I've developed have included AI integration with OpenAI and Anthropic APIs. At present, I'm also setting up an internal LLM for speeding up software development. What makes me stand out? I code fast. Really fast. I’m great at taking an idea from zero to a fully functioning app in just days, without cutting corners on quality. Having worked in Asia and Europe, I’ve learned how to adapt to different clients and challenges, which helps me deliver exactly what’s needed, every time. Recently, I co-founded my own software consulting firm, where I get to use my skills and experience to help businesses grow and succeed. Outside of coding, I’m passionate about dogs, I love solving crosswords, and I’m a bit of a political nerd. These hobbies keep my mind sharp and my creativity flowing, which is probably why I enjoy tackling complex coding challenges. I know Ruby and Rails inside out, and I thrive on turning big ideas into reality—quickly and efficiently. If you need someone who can hit the ground running and deliver results, I’m your developer.

The first programming book I read was "Learn Ruby the Hard Way" by Zed Shaw. That, coupled with an interest in graphic design seemed like a gateway into a very enjoyable career where I could be logical and creative! Shortly after, I joined a bootcamp in 2016. I've worked with quite a few frameworks and libraries since 2016. Here's what I've learned: - Ruby is super fun, Rails is not dead, convention-over-configuration is my preference whenever possible. - JavaScript is cool but the front-end world can be exhausting; too much reinventing the wheel and forgetting about web fundamentals. - I enjoy CSS a lot. - Hotwire and Stimulus are a very cool approach to efficiently providing a user with a SPA-like experience - I'm proficient in React but like to keep it simple, sustainable, composable. I strive to find the appropriate balance of simplicity and complexity in order to: - meet the project needs - be considerate of fellow developers who will need to read, understand, work with the code I write - enable Junior devs to step into the codebase and understand/mimic/extend the codebase. Unique Traits: - Trilingual (English, Spanish, French) - Education background (I can mentor Junior devs) Positive Traits: - Passionate about good quality - Tenacious Personal focus: - I've been focused on diving deeper into the Rails ecosystem and my aim is to find a role with a company using Rails + Hotwire, or Rails + React. - Docker NOTE: The link "Website" link in my bio is Github. I'm currently redoing some portfolio projects.

I’m Ruby/RoR engineer obsessed with databases and automation. For 12 years I devote myself to the IT industry as (formerly) a technical writer, then a software engineer (10 years), incl. being a business owner and tech lead (since 2018). • I’m deeply familiar with Ruby and/or Ruby on Rails. Since 2014 I’ve been working on and building (incl. from scratch) a dozen of apps from huge monoliths to small apps, full-stack or API-only apps, and worked with versions 3.2–7.0 of Rails and 1.9–3.2 of Ruby; • Besides Ruby/Rails (and Sinatra, and Cuba), my strong points are Oracle & PL/SQL and PostgreSQL (incl. writing and tuning complex SQL queries), Shell scripting (from Bash with grep/sed/awk to Perl/Python/C), and User testing (Watir, Cypress); • I also have a several-year experience with JavaScript as well as React and Vue and I’m capable of talking with the frontend people in the same language as well as doing not-so-complex things; • I speak and write English fluently; • I worked in both enterprise- and startup environments; • I’m unbelievably initiative and enterprising and never-sitting-on-my-hands. I consider myself a well-equipped T-shaped engineer, and I’m tool agnostic and not constraining myself only with Ruby or Rails. For me tools are just tools to build products and work on challenges. Besides, since I treat product development as a single whole, I prefer to be not just a coder and executor, and not in a specific area, but my real power (and, inseparably, passion) is in a diversified approach to the product, that is, diving in the product/business realm, bringing and brainstorming new (or good old) ideas with stakeholders, implementing them on different levels, rethinking processes (of whatever it could be—product itself or development team), increasing the database (and not only) performance, doing/setting up/improving deploys, gathering use cases, breaking them down into test cases and then implementing e2e tests, trying to preserve any knowledge for the current and potential team members by writing structured docs, etc. I do love seeing a big picture and working on various levels of responsibility and parts of the product besides just typing the code, which is still basically the major part of my work. More details on the above or other things we can surely discuss tête-à-tête :)