Hire senior freelance Ruby on Rails developers in United States

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7 years experience | Rails & React | Senior Full Stack Software Engineer

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Hi! I'm Liz 👋🏼 I'm about as full-stack 🥞 as they come. I started as a QA and automation engineer and now I'm a senior full-stack engineer focusing on Rails and React. Early on as a QA I worked on projects from writing SQL scripts to check data, to automation engineering, to React Native applications, and even helping implement Kafka instances and a team transition to Kubernetes. Then I moved on to development, mostly focusing on Rails / React stacks. I also am very comfortable working in Python. Now I've been a full stack developer for a few years, always carrying my QA mindset with me. I love exploring the ins and outs of a problem, and figuring out where I can pick it apart and expose weaknesses. I'm really great at building relationships with stakeholders, establishing trust and cooperation so that we can all move forward with a project in a very pragmatic way. Pairing with coworkers is always very enjoyable for me. I like the collaboration, but I really value the mentorship the most. Teaching juniors git has become a mainstay for me, as well as coaching them to maintain a calm mindset while debugging, encouraging them to move through issues in a systematic way. And of course I always fit in robust testing, showing folks how to create test suites and pipeline automation that will improve their workflow. Let's talk about how I can contribute to your team and stack 🙌🏻

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Rescuing old codebases, delivering MVPs and products to startups and Fortune 500s

New profile

I am an experienced full-stack engineer with over 20 years building robust software architectures, including 13 years of delivering B2B, and B2C software using Ruby on Rails. Throughout my career, I've worked at both startups and large enterprises, which has given me broad experience building and implementing solutions from the ground up. I am passionate about Ruby and Rails and find the most joy and fulfillment in projects utilizing this stack. My core competencies in Rails include: Designing and implementing scalable, maintainable Rails web apps, APIs, and back-end systems Expertise in Rails MVC patterns, RESTful conventions, TDD, debugging, optimization Leading Agile processes from user stories to production - standups, sprints, code reviews Integrating third-party services like payments, analytics, APIs (Strava, Fitbit, Garmin HealthAPI, payment processors, etc.) Championing best practices like SOLID principles, design patterns, security Writing clean, well-tested, modular Rails code In addition to my Rails skills, I bring strong adaptability, communication, and leadership skills to the engineering roles. My other skills include: Disciplines: Fullstack/backend web development, devops/SRE/networking, distributed systems, engineering management, IOT Languages: Ruby, Javascript, SQL, Python, Rust, Go, Shell, C Frameworks: Ruby On Rails (API/Fullstack with Hotwire), RSpec, Minitest, Svelte, TailwindCSS, Bootstrap DevOps: Linux, Docker, Kubernetes, Ansible, Pulumi, Terraform, Chef, Github Actions, Gitlab Runners, Jenkins DataStores: PostgreSQL, MySQL, Redis, Oracle, ELK, Loki/Grafana, DynamoDB, S3 (AWS/MinIO) Cloud: AWS, Azure, GCP, MAAS, Heroky, fly.io

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Creative, Design Engineer, Pragmatic, Agnostic, Chill

Hi, As a ruby on rails developer I know what it takes to build a webapp from the ground up. To verify my experience, please check my github azeemh, and sign up for my free platform, Zedtopia. By seeing my open source code and reference projects you can see how I code in simple contexts. Going to see my work live on the web will better show you what I have built and what I am capable of coding in more complex and fully featured applications. Should we interview and agree to mutual NDA, I can also explain to you how I coded any features of interest and screen share as I walk you thru the source code, line by line. I have 2 apps live in production. Zedtopia is a socioeconomic network with democratic voting and social commerce. At this point, it's a full fledged product beyond mvp, migrated from ruby 2.7.6 & rails 5, to ruby 3.2 and rails 7, with a postgresql db. See https://www.zedtopia.com. Unlimit3d is an MVP 3d printing blockchain app, currently adding printing verification and purchase, with API partners, however users can currently sign up, upload, and share their files. Unlimit3d uses rails 7, ruby 3.2 and postgresql. See https://www.unlimit3d.com. I also helped to code connect.berniesanders.com for the 2015-2016 election cycle, which served over 200k simultaneous logged in users at any given time. Finally my personal website is found at http://www.azeemhussein.com, with my resume available at www.azeemhussein.com/resume. There you can see my designs, some cool interactive software exhibits, whitepapers, and more... 

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Rails developer with 20+ years experience

I've been obsessed with making stuff for the web since middle school and have been fascinated by dynamically typed languages for as long as I can remember. I started using rails for small school projects back when it was version 0.9. Shortly afterwards, I would have my first chance to use it professionally. As a solo dev, I wrote a full stack customer portal for a small IT company that allowed them to expand across the country while keeping a small staff. During that job, I had to deal with the quirks of FastCGI, the state of ruby 1.6 async network IO, and even had to build my own job queue with EventMachine. That application was the lifeblood of the company as I expanded and updated it through to Rails 5. Later in my career, I joined a scrappy startup as one of their earlier domestic engineering hires. I was brought on as BE lead to work on their massive monolith Rails app serving jsonapi to Ember and React SPAs. They had broken tests, minimal coverage, and lots of sporadic customer issues. I pushed us towards some practices that let us fix our suite, have higher code quality, and fewer incidents. We made all of these improvements while I was closely working with the product team and the front end developers so we could release a constant stream of well scoped features. We expanded and quickly rolled out a whole new product line during COVID. During that time, I got to manage a small team and work on a product that at peak saw 2 million requests per second. I think of software development as a craft. There's nothing like building things that have a huge positive impact on people and doing it with a lot of care and quality.

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Backend Ruby Developer

Intro When I turned 30, I switched careers and learned the basics of web development at Le Wagon, a programming bootcamp which was created in Paris (🇫🇷 France) and now has many locations around the world. I really enjoyed what I've learned there, especially the Ruby programming language and working with Git. This solidified my belief that I wished to become a proper developer, with a focus on the backend side. 🇫🇷1st experience (2017-2022): epicery My first work experience was at epicery, a french startup created in late 2015 that provides an online marketplace to independent food shops (greengrocers, butchers, fishmongers, etc.). I first started as an intern, and then was hired as a full-time employee 6 months later. I spent a total of 5 and a half years at the company. During that experience, I've learned a lot under the mentorship of the CTO, who was himself heavily invested in the codebase during the first few years of the company as our tech team was quite small at the time (less than 5 developers). Here are some of the technologies or 3rd party services I got familiar with: the SQL language (PostgresSQL in particular), which I had the opportunity to work with on a regular basis – not just through the ActiveRecord ORM – when implementing views using the scenic gem or writing queries in the GUI of a dashboarding/BI tool (metabase) the Solidus e-commerce framework, which provides a comprehensive collection of gems to cover both the core business logic and the various "frontends" (API, admin, store frontend) various 3rd party APIs from vendors such as Adyen (payment processing), Mailchimp (email / marketing automation), Brevo (formerly Sendinblue; email/sms automation) As our team grew to reach 12+ developers, my role became multifaceted: quick prototyping of new API integrations performance investigations to fix N+1 queries reported by the APM (Appsignal); I also learned how to track down inefficient Ruby code using flame graphs for cases where database optimisations were not enough release and deployment management mentoring new team members when they needed guidance as I had the most experience with the codebase and the Git workflow (rebasing) 🇨🇭2nd experience (2023-present): Gold Avenue I relocated to Switzerland in January 2023 after having found an opportunity at Gold Avenue, an e-commerce website whose goal is to disrupt the European precious metals market by aiming at providing a superior user experience compared to the usual industry standards, as well as offering differentiating features such as the secure storage of our customer's assets. The tech stack I'm working with is very similar to that of epicery. The main challenge I've encountered in this new position is that my coworkers are more senior on average compared to my former colleagues, meaning I needed to adjust my reviewing skills in order to keep up with denser diffs and/or more pull requests to review.

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