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Advanced Ruby Training - Optimize your Rails Apps in 4 Days

Ref: RPI105
10 people max.
$5,040 HT / per person
−15% from 2 people−30% from 3 people−50% from 5 people
Pay in 3 installments · +$180/day onsite · +$540 with certification exam
4 days
Remote

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Learning objectives

  • Master Ruby metaprogramming for dynamic code
  • Optimize performance with advanced Gems like Puma and Sidekiq
  • Develop scalable RESTful APIs under Rails 7
  • Implement advanced TDD tests with RSpec and Capybara
  • Manage secure deployments on Heroku and Docker
  • Analyze and refactor legacy code for optimal maintainability

The Learni story

Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.

Don't let this gap widen

Why this program matters

  • Without advanced Ruby training, your Rails apps risk chronic memory leaks costing up to 25% CPU resources in production and 10k€/year in unnecessary infrastructure.

  • Undetected bugs via TDD tests impact 35% of users, generating 15% churn and negative App Store reviews.

  • Your legacy code slows iterations, tripling feature delivery times, while competitors scale 5x faster with optimized metaprogramming.

  • Are you losing freelance opportunities at 80€/h?

  • Invest now to avoid these costly pitfalls and dominate the Ruby market.

Allan Busi
Allan Busi

Learni Trainer · Expert

73%productivity gap
×3cost of inaction

Program

Module 1Ruby Metaprogramming: Dynamic Methods and DSLs (Ruby 3.x, IRB)

Dive into the secrets of advanced Ruby by creating your own DSLs with define_method and metaclass, test live on IRB for concrete exercises on dynamic inheritance, build a personal mini-framework by refactoring existing code, leave with snippets ready to integrate into your Rails projects to boost productivity from tomorrow.

Module 2Advanced Gems and Optimization: Sidekiq, Puma (bundler, rubocop)

Install and configure powerful Gems like Sidekiq for asynchronous jobs and Puma for multi-threading, perform practical exercises on memory optimization with heap dumps, integrate Rubocop for clean code, develop a scalable worker in real conditions, obtain tested deliverables to accelerate your apps by 40% in production.

Module 3Advanced Rails: APIs and Security (Rails 7, Devise, Pundit)

Build robust JSON APIs with Rails 7 by implementing GraphQL via Graphene, secure with Devise and Pundit on enterprise cases, code advanced controllers with concerns, test real attack scenarios, produce a complete deployable API prototype, transform your skills to deliver enterprise-ready backends in record time.

Module 4Testing, Performance, and Deployment: RSpec, Docker (New Relic, Capistrano)

Master end-to-end tests with RSpec and Capybara on complex apps, profile performance via New Relic to track bottlenecks, containerize with Docker and deploy via Capistrano to staging, perform a complete audit of a legacy project, leave with a portfolio of certified deliverables ready to scale deployments without downtime.

Evaluation method

  • Daily interactive quizzes, final project on Rails API, Qualiopi certification

Learning method

  • 80% hands-on pedagogy, pair workshops, individualized feedback

Methods, materials and delivery

The Advanced Ruby Training - Optimize your Rails Apps in 4 Days program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Advanced Ruby Training - Optimize your Rails Apps in 4 Days program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Advanced Ruby Training - Optimize your Rails Apps in 4 Days program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are eligible for corporate training budgets and employer-funded plans.

Verified reviews

What our learners

4.9 · +100 verified reviews
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
Read all reviews
Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

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