Senior Full Stack Engineer

Summary

Join Faria Education Group as a Senior Full-Stack Engineer and play a key role in a cross-functional Squad, owning end-to-end delivery of product features with a focus on AI. You will contribute across the full stack, drive product decisions, mentor teammates, and influence architecture and engineering standards. This position requires extensive experience in Ruby on Rails and modern web technologies, as well as strong front-end development skills. You will be responsible for designing and implementing scalable features, collaborating with product and design teams, and driving technical decisions. The role also involves mentoring junior engineers and improving development workflows. Faria offers a competitive salary, comprehensive benefits, and opportunities for career development.

Requirements

• 5+ years of hands-on development experience with a focus on Ruby on Rails
• Deep expertise in backend development, performance optimization, and scalable service design
• Strong front-end development skills in JavaScript (ES6+), HTML5, CSS3, Bootstrap
• Experience with MySQL, Redis, Memcached, and modern caching strategies
• Strong with Background processing (DelayedJob, Sidekiq)
• Experience with ActionCable (Anycable) and SSE
• Experience with AWS services, S3 in particular
• Strong grasp of Git, GitHub workflows, and GitHub Actions for CI/CD
• Proven experience writing reliable tests using RSpec, Capybara, and Jest
• Experience using and enforcing static and security analysis tools (Rubocop, Brakeman)

Responsibilities

• Own the design and implementation of robust, scalable full-stack features using Ruby on Rails and modern web technologies
• Act as a product partner—collaborate with Product, Design, and stakeholders to shape features from problem to production
• Drive technical decisions within the team and contribute to system architecture and long-term planning
• Own large code areas and drive technical roadmaps, ensuring quality, performance, and maintainability
• Identify and resolve performance bottlenecks, architectural risks, and complex bugs
• Review code with an eye toward maintainability and long-term impact; promote engineering best practices
• Mentor and guide engineers through technical challenges, design discussions, and code reviews
• Improve development workflows, testing strategies, CI/CD pipelines, and observability
• Proactively surface technical debt and propose solutions

Preferred Qualifications

• Familiarity with Haml, ViewComponent, and optionally StimulusJS
• Monitoring tools like Airbrake, NewRelic, Sentry
• Exposure to AI/ML features or tools

Benefits

• Competitive salary and opportunities for career development (B2B)
• Comprehensive medical coverage by LuxMed
• We support work/life balance and offer generous Annual leave and Public Holidays
• Faria encourages team members to lead healthy lifestyles and provides recurring monthly Health and Wellness benefits
• We encourage continued education, so suggest ongoing professional development opportunities, and will help cover the cost of professional certifications
• Friendly atmosphere, group activities, and corporate events
• MacBook Pro or another laptop of your specification, peripherals, and displays included
• Small but cozy office in Krakow for your convenience or remote work in Poland