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What Is Hanami?

Hanami is a modern web framework for Ruby that prioritizes clean architecture, lightweight dependencies, and developer productivity. Unlike Rails' monolithic approach, Hanami enforces separation of concerns through its architecture, making codebases more maintainable and testable. Built on top of dry-rb libraries, Hanami provides type safety, validation, and functional programming patterns while remaining accessible to developers coming from Rails backgrounds.

Hanami's design philosophy centers on predictability and explicit code. It includes a lightweight router, form validation, and a modular structure that scales from small APIs to complex applications. The framework gained significant traction after its 2.0 release, which modernized the architecture while maintaining backward compatibility for many existing projects.

When Should You Hire Hanami Developers?

Hire Hanami developers when you need Ruby developers who understand modern web architecture and can build maintainable systems. Hanami is ideal for:

  • Microservices and APIs: Hanami's lightweight nature makes it perfect for building focused API services and microservices that need to be deployed independently.
  • Refactoring legacy Rails applications: Developers experienced with Hanami understand architectural improvements and can help modernize existing codebases.
  • Teams prioritizing code quality: Hanami developers are accustomed to explicit dependencies, strong typing, and comprehensive testing, which reduces bugs and improves maintainability.
  • Projects requiring clean separation of concerns: If your application demands clear boundaries between business logic, presentation, and data layers, Hanami's forced structure prevents architectural drift.
  • Startups building with modern practices: Teams wanting to establish good habits from day one benefit from Hanami's opinionated architecture.

What to Look For in Hanami Developers

Core Competencies: Look for developers with solid Ruby fundamentals and understanding of Object-Oriented Programming principles. They should be familiar with dry-rb libraries (dry-validation, dry-struct, dry-types) and how Hanami integrates these tools. Experience with Hanami 2.x is increasingly important as it represents the modern standard.

Architectural Thinking: Strong Hanami developers understand dependency injection, hexagonal architecture, and why separation of concerns matters. They can explain how Hanami's structure prevents common pitfalls in monolithic applications.

Testing Discipline: Candidates should demonstrate proficiency with RSpec or Minitest and understand how Hanami's architecture enables easy testing of isolated components. They should discuss testing strategies, test organization, and mutation testing familiarity.

Database Knowledge: Hanami uses ROM (Ruby Object Mapper) as its primary ORM. Developers should understand ROM's benefits over ActiveRecord, including immutability, composable queries, and explicit SQL generation.

Full-Stack Capabilities: While backend-focused, Hanami developers should have basic frontend knowledge (HTML, CSS, JavaScript) and understand how to integrate modern frontend frameworks with Hanami APIs.

Interview Questions for Hanami Developers

Behavioral Questions

  • Tell us about a time you refactored code to improve architecture. What was the original problem and how did Hanami's patterns help solve it?
  • Describe your approach to building a new service within an existing application. How do you decide what goes where?
  • Have you mentored developers transitioning from Rails to Hanami? What were the most difficult concepts to explain?
  • Tell us about a project where testing was critical to success. How did you structure your tests?

Technical Questions

  • Explain the difference between Hanami's architecture and Rails architecture. When would you choose Hanami over Rails?
  • How does Hanami's router differ from Rails' router? What are the implications for large applications?
  • Describe ROM's approach to database access. What are the advantages over ActiveRecord?
  • What is dependency injection in Hanami, and why is it important for testability?
  • How do you handle cross-cutting concerns (like authentication and logging) in Hanami without polluting your action logic?

Practical Scenarios

  • You're building an API endpoint that needs to validate input, fetch data from multiple sources, and return a formatted response. Walk through your implementation in Hanami.
  • Your application needs both web and API endpoints. How do you structure your actions and views to minimize duplication?
  • You're debugging a performance issue where database queries are slow. How would you identify the problem using Hanami?

Salary & Cost Guide: Hanami Developers in Latin America

Hanami developer salaries in Latin America (2026) typically range by experience level and country:

  • Junior Developers (0-2 years): $24,000–$36,000 annually. These developers have basic Hanami knowledge and are still learning architectural patterns.
  • Mid-Level Developers (3-6 years): $42,000–$65,000 annually. Experienced with Hanami 2.x, capable of building maintainable systems, comfortable mentoring junior developers.
  • Senior Developers (7+ years): $70,000–$110,000 annually. Expert architects, deep knowledge of both Hanami and Rails ecosystems, can design systems and lead technical decisions.

Argentina and Chile typically command premium rates within the region due to mature tech markets. Colombia and Mexico offer competitive talent at lower rates. Uruguay has the highest rates due to scarcity and high cost of living.

Why Hire Hanami Developers from Latin America?

Quality of Talent: Latin America has a strong Ruby and web development community. Brazilian, Argentine, and Mexican developers have deep expertise in modern frameworks and bring architectural thinking that goes beyond typical tutorial knowledge.

Cost Efficiency: Hiring Hanami developers from Latin America provides 40-60% cost savings compared to North American or European rates while maintaining senior-level expertise and English proficiency.

Time Zone Alignment: For US-based companies, LatAm developers offer excellent overlap with business hours, enabling real-time collaboration and faster iteration cycles.

Proven Track Record: Latin American developers contribute significantly to open-source projects, including Hanami itself. Many have experience with complex, production systems.

Cultural Fit: LatAm developers tend to be adaptable, collaborative, and motivated by long-term growth opportunities with international companies.

How South Matches You with Hanami Developers

South specializes in identifying Hanami developers across Latin America with the exact expertise your team needs. Our vetting process focuses on:

  • Architecture Understanding: We assess candidates' comprehension of Hanami's design philosophy and ability to explain why it matters.
  • Practical Coding Ability: Our technical assessments include real-world scenarios like building validated API endpoints and refactoring monolithic code.
  • Communication: All candidates are tested for clear English communication and ability to work in distributed teams.
  • Production Experience: We prioritize developers who've shipped Hanami code to production and understand scaling challenges.

South offers a 30-day replacement guarantee: if a matched developer isn't a fit, we replace them at no additional cost. No trial period required—hire with confidence.

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FAQ

How long does it take to find a Hanami developer?

South typically matches you with qualified Hanami developers within 3-5 business days, depending on specific requirements and seniority level.

Can I hire a Hanami developer for part-time or contract work?

Yes. South works with developers available for full-time, part-time, and contract arrangements. We match based on your specific needs.

What if the developer I hire doesn't work out?

South provides a 30-day replacement guarantee. If the match isn't right, we replace them at no cost. No trial period required.

Are Hanami developers more expensive than Rails developers?

Hanami developers may command slightly higher rates due to specialization, but the investment pays off through better architecture and lower maintenance costs over time.

Can a Hanami developer contribute to Rails codebases?

Absolutely. Hanami developers understand Rails deeply and can transition to Rails projects, bringing architectural improvements with them.

What's the difference between Hanami and other Ruby frameworks?

Hanami differs from Rails (monolithic, convention-heavy), Sinatra (minimal, no structure), and Roda (fast, functional). Hanami balances structure with flexibility and modern practices.

Do you have Hanami developers with DevOps or infrastructure experience?

Yes. Many of our Hanami developers have Docker, Kubernetes, and deployment pipeline experience, especially those working at scale.

How do I evaluate Hanami candidates?

Ask about architectural decisions in past projects, their understanding of dependency injection, and how they approach testing. South's vetted candidates are ready to discuss these topics confidently.

What's the learning curve for a Rails developer switching to Hanami?

Rails developers typically need 2-4 weeks to become productive in Hanami. The transition is easier than Rails-to-other-language shifts because the Ruby fundamentals remain the same.

Can Hanami handle high-traffic applications?

Yes. Hanami's lightweight design and explicit patterns enable efficient scaling. Many production systems handle millions of requests daily.

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