Senior Ruby on Rails Developer

Sur; São Paulo; Presencial; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A leading technology company in São Paulo is seeking a Senior Ruby on Rails Developer to work on their production Rails application. The role involves designing and maintaining features, building APIs, and ensuring system reliability. Candidates should have senior-level experience with Ruby on Rails and a strong grasp of asynchronous processing and document-oriented databases. A C1 level of English is required. This position offers an opportunity to contribute significantly to both code health and production operations.

Qualificações

• C1 English or equivalent.
• Hands-on experience with production Ruby on Rails applications.
• Strong background in background job systems.
• Experience with document-oriented data models.
• Experience building external APIs with authentication.
• Strong testing discipline.

Responsabilidades

• Design, build, and maintain features in a modern Rails codebase.
• Own background and asynchronous workflows.
• Model, query, and optimize data in a document-oriented datastore.
• Build and maintain HTTP APIs and third-party integrations.
• Diagnose and resolve production issues.
• Improve system reliability and performance.
• Contribute to long-term code health.

Conhecimentos

Senior-level Ruby on Rails experience

Background job systems

Document-oriented data modeling

External-facing API design

Automated testing

C1 English

Descrição da oferta de emprego

As a Senior Ruby on Rails Developer you will work on a production Rails application that includes customer-facing features, internal systems, and external integrations. This role owns work end-to-end, from design and implementation through testing, performance, and production readiness.

Responsibilities:

• Design, build, and maintain features in a modern Rails codebase.
• Own background and asynchronous workflows including retries, idempotency, throughput, and observability.
• Model, query, and optimize data in a document-oriented datastore environment.
• Build and maintain HTTP APIs and third-party integrations including webhooks, authentication, billing, and notifications.
• Diagnose and resolve production issues in collaboration with product and support.
• Improve system reliability, performance, and operational safety.
• Contribute to long-term code health through refactoring, testing improvements, security practices, and thoughtful code review.

Technical Stack:

• Ruby and Rails 8.x for backend and API development.
• Redis-backed background job systems.
• Document-oriented datastores and search or indexing systems.
• HTTP APIs, OAuth and OpenID-based authentication, and webhook-driven integrations.
• Hotwire, Turbo, Stimulus-style JavaScript, and modern asset tooling such as esbuild and Tailwind-style CSS.
• Observability tooling including APM, error tracking, logging, metrics, and rate limiting.
• Comprehensive automated testing across unit, integration, and system layers.

Requirements

• C1 English or equivalent
• Senior-level, hands-on experience building and operating production Ruby on Rails applications.
• Strong background in background job systems and asynchronous processing with real-world operational concerns.
• Experience designing and querying document-oriented data models with attention to indexing and performance.
• Experience building external-facing APIs with authentication, authorization, and rate limiting.
• Strong testing discipline and experience diagnosing flaky or non-deterministic tests.
• Security-minded approach to application design and production operations.

Preferred Qualifications

• Experience working with high-growth startups.
• Experience building products using LLMs or LLM-based agents. Ideally,