Hire principal / staff Ruby on Rails developers

I excel at problem-solving, app design, and architecture. I like to develop user-friendly applications and follow new technologies.

Senior software engineer with over 10 years of experience as a remote freelancer. My educational background includes an MSc 2:1 in computer science and applied mathematics engineering from ENSEEIHT (Toulouse, France) in 2009. I then worked for 2 years as a frontend developer at a startup in London and transitioned to backend work in 2013. Specializing in web application development, I have undertaken projects for companies such as Carrefour, L'Oréal, Cocolis, Epicery, and Alerti. My work has encompassed backend development, data engineering, code and database performance improvement, e-commerce platform customization and logistics, payment system integration, API creation, crawlers, technical documentation, and testing. Passionate about data manipulation and rendering them to users and stakeholders in a more meaningful way, I am currently expanding my skills in AI/ML and neural networks through CNRS fidle formation to explore how I could apply and offer these services to my clients. Recent milestones and accomplishments include: Migrating the payment system from Adyen to Stripe for Epicery Migrating the frontend from Vue to Hotwire for Epicery Developing a geolocalized matching algorithm between carriers and packages for Cocolis Fields of expertise: E-commerce solutions with Solidus/Spree open-source framework Data processing and visualization with Business Intelligence tools for reporting Integration of payment system providers Integration of third-party APIs Database design and performance optimization Frontend performance optimization Crawling and scraping Technical audits Testing, documentation, CI/CD tools Experience with the following tools: Languages: Ruby, Typescript, JavaScript, Node.js, Ruby on Rails Platforms: AWS, Google Cloud Platform, Render, Heroku Frontend: React, Vue.js, Hotwire, Angular, HTML/CSS, Alpine.js, HTMX, Astro Payment providers: Stripe, Mangopay, Adyen, PayPal Data viz: Amazon QuickSight, Superset, Tableau Backend tools: Solidus open-source e-commerce solution, New Relic, Elasticsearch, PostgreSQL, Amazon S3, etc. CI/CD Tools: GitHub CI, CircleCI Fluent in French, English, and Spanish.

Hi, with 7+ years of experience as a Ruby on Rails and full stack developer, I excel in building dynamic and scalable web applications. My expertise spans across a range of JavaScript frameworks, including ReactJS, NextJS, NodeJS, NuxtJS, and VueJS. I combine my strong backend skills with modern frontend technologies to deliver seamless, high-performance solutions My journey started with a keen interest in technology and quickly evolved into working on complex projects. Recently, I led a team to build a scalable microservices-based application, which enhanced both user experience and performance. I’m also exploring serverless technologies, like AWS Lambda, to improve application efficiency. What makes me stand out is my ability to handle both frontend and backend development, solve tough problems, and create user-friendly solutions. My diverse skills and hands-on experience make me a strong addition to any development team. Let’s build something great together!

TLDR- I know Rails, let’s build together. I understand that the most important part of any project is getting it in front of users. I am the ultimate buy one get one free; a true full stack developer with years of experience working with Rails and React. Let’s leverage my skill set to get your idea from in your head to on the web. Skills Great knowledge of Ruby. Experienced Next/React user. Sidekiq expert. Domain Modeling. CSS (SCSS, StyleComponents, Tailwind, Bootstrap, Whatever is clever). API’s and Integrations are my jam. I am very familiar with the JavaScript ecosystem including modern React and the current rise of hypermedia on, over, or around the wire. From LiveView in Phoenix, to Hotwire and HTMX, I’ve hosted projects in each. Legacy Code I have experience working with large media organizations that managed many forms of media from digital to printed magazine. Magazine systems are archaic, and very brittle. I refactored America’s Test Kitchen’s subscription service, allowing for greater resilience and capture. I am currently working for an enterprise grade e-commerce platform. We leverage Rails (Sidekiq) and process ~billion jobs a day.

My values are collaboration, empathy, and work ethic. I've been working in Ruby on Rails for 10 years, and have seen a variety of different industries and different products. I focus on delivering quality products on-time and under budget. Reach out to discuss your needs!

I'm a senior software developer with about 15 years of extensive hands-on experience and a demonstrated ability to deliver high-quality results. I have expertise in multiple cutting-edge web application frameworks, specifically, Ruby on Rails and Node JS. I also have good hands in frontend Javascript frameworks React JS and Angular JS. I've recently worked with the RightInbox, a high-ranking Productivity application / Google Chrome Extension with a 4.7 rating on the Chrome Store and a feature by Google, was a project where I started as a developer and grew to become the Engineering Manager. During my time on the project, I used my advanced knowledge of Node JS to enhance the product's functionality, increase its user base, and ensure its smooth operation. Simultaneously I developed the ZoomShift platform, a scheduling software built on Ruby on Rails. Here, my role was about active development however more focused on strategic technological choices and project delivery. Zoomshift is well-regarded for its efficiency and was even utilized during the US elections to manage the shifts of volunteers. I've worked with FindEmails, which finds and verifies emails while you are on LinkedIn or browsing the web with the FindEmails Chrome Extension. Skills:- - Solutions - Optimization and Performance - Scalability - Architecture - Ruby on Rails - NodeJS - ExpressJS - ReactJS - AngularJS - Bootstrap - SQL, PostgreSQL, NoSQL, DynamoDB, MongoDB, MariaDB, MySQL, Redis - Stimulus - Integration of all levels of APIs - Selenium, RSpec, Mocha, Mini Test, Chai.JS, Sinon.JS - Digital Ocean - Heroku - Render - Action Cable and Web Sockets - JavaScript, jQuery, jQuery UI, CoffeeScript, TypeScript - HTML5, HAML, Slim - CSS, SCSS - GCP, AWS, Heroku - EC2, S3 - Puma, NGINX, Capistrano - Elastic Search, Algolia - GIT - CI/CD - Jira - Trello - Asana

Great at refactoring, audit and developing of legacy apps as well as building apps from scratch with modern Ruby and Rails. Focused primarily on back-end, having an understanding of front-end as well. A fan of DRY, DSLs, Rails Engines and Active Record. Not a big fan of SPA, micro-services as well as extensive front-end development or DevOps chores. Can bring your decade old outdated MVP back to life step by step without rewriting it from scratch or hiring a new team. Normally you have two choices: 1) a legacy team considering their creation to be great as it is or 2) a new one telling you that the app should be thrown in the trash and replaced with a brand new one using their hyping shiny tools. Able to learn your legacy app in days — without a documentation or help of former developers if abandoned. Can learn your favorite frameworks on my own and jump in fast. Can use a lot of secondary languages for audit or bug-fixing on an occasional basis. Audit Refactoring Optimization Code review Application architecture Team leading Mentoring Experienced in working with international fully remote teams. English: C1 Spanish: A2

Hi, If you’re looking for someone who can hit the ground running, dive deep into challenges, and come up with creative solutions, then you’ve found your match. Located in Santa Clara, CA. The key features of my experience: · BS and MS in Computer Science. · 8+ years of experience in on . · 5+ years of experience in & – React, Node, Angular & Vue. · Proficient in , AI/ML & Data Analytics. · Competent in platforms (, GCP, Heroku, Datica, Docker, Kubernetes), databases (PostgreSQL, MySQL, and MongoDB) and version control (Git). · Project Management Tools: Jira, Confluence, GitHub, GitLab & Bitbucket. · Testing Tools: Selenium, Jenkins & Cypress. LinkedIn – https://www.linkedin.com/in/s%C3%A5m-a%C3%BAstin-619a2b320/ GitHub - https://github.com/usmanasif Some of my best work: Intellirent - https://www.myintellirent.com SaplingHR - https://www.saplinghr.com Concert - https://www.concertfinance.com Trakstar - https://www.trakstar.com Movr - https://www.movewithmovr.com/ I have led more than 10 projects from conception to deployment, and have mentored 20+ junior developers in the process. I have diverse experience working with various industries including health-tech, , education, e-commerce, ERP & SaaS. I’m excited to get to know you more and proceed with the next steps in the hiring process. Have a great day! Sam

I am a seasoned software engineer and architect with 25+ years of experience in the industry. I have a passion for software design and am driven by my love of technology. Over the course of my career, I have honed my skills in both frontend and backend development and have worked with a variety of technologies and platforms, including Ruby on Rails, React, AWS, NodeJS, Postgres, MySQL, and more. My expertise in agile software development and DevOps has resulted in a proven track record of delivering successful projects. I am an advocate for Test Driven Development (TDD), the Minimal Viable Product (MVP) approach, and pair programming. These practices have not only helped me build high-quality software solutions, but have also served as a means of mentoring and leading teams. I have also made significant contributions to cost-saving measures, such as reducing AWS spend by 60% through optimization, autoscaling, and scaling services only when required. I have also helped improve code quality through unit testing, peer reviews, and implementing CI/CD pipelines. In my roles, I have worked closely with clients, stakeholders, and cross-functional teams to understand requirements and deliver scalable software solutions. My experience in iterative and full lifecycle development for Internet, commercial, distributed, and n-tier solutions has allowed me to play a vital role in the completion and launch of many successful projects. Overall, I am a highly motivated and skilled software engineer and architect, with a passion for great software design and a proven track record of delivering successful projects.

Seasoned code wrangler with over a decade in Ruby on Rails and a past life as a social worker and policy researcher. I've got a knack for translating geek speak for humans and wrangling stakeholder needs into delighted users and maintainable code. Somehow, most days, I still like my IDE. Looking to land in a place where code meets impact. Full stack developer that has spent over a decade in the Ruby/Rails ecosystem. I lean ops -> backend, but I can get in there and wrangle JS components and CSS if need be. I often wear at least a little bit of a product manager hat, have been a team lead on large projects, and I even try to remember to write documentation and technical briefs. I'm longwinded in slack, shy in person, didactic and friendly in code reviews, and occasionally down a rabbithole. Loves: Wrangling weird bugs and annoying APIs, refactoring, clear code (for the humans) and good tests (for the robots), figuring out the best places to deliver maximum impact and shipping quickly, teaching myself new things, compassionate communication and collaboration with multiple stockholders, making weird things happen in the CI pipeline Special superpowers: T-shaped generalist that still geeks out on learning new things, sniffing out something that isn't a problem yet but definitely will be (and I don't mean premature optimization), care a lot about readable code. Worked as a social worker for a decade, there's more soft skills than people might think in getting software out the door. Not so loves: JS in general, jerks, arrogance, watching junior developers not get the support they need and thinking it is their fault, refreshing staging for an hour wondering why my debugger isn't getting hit. -- Have worked in startups at all stages of their life cycle as both an introverted grumpy solo developer and team leader, helped make product decisions, mentored other developers, deleted prod a few times, etc. I chafe a bit at schedules, but occasionally I'll figure out a big that would have been a big problem in the future at 3am and just fix it. Love fixing those things. I can meeting during normal human hours though. -- Open to short and long term contracts and FTE for the right fit. Prefer chill flat organizations where everyone likes and respects each other and just gets stuff done. I've shipped features faster at those organizations than any that were focused on relentless hustle. -- Tell me why you believe in your tech and I'll tell you about one of my weird side projects like a Led Zeppelin button or a confessional that floats in the air. -- Have PhD level statistics classes buried in my brain somewhere, know my way around python and some data analysis, have built ETL pipelines - if it has to be done, I'll try to figure out a way to get it done. And the longer you hang around this world, you realize the most important programming language is being able to talk to people in kind and useful ways. -- Senior enough to know that sometimes it's the code you don't write that solves the problem ;) Junior enough to still get excited every time I make LEDs blink with magic words.