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Contract Ruby Rails Jobs (NOW HIRING)

Judge Group, Inc.

Sr Ruby on Rails Engineer

Dallas, TX · On-site

$145K - $165K/yr

Write tests focused on observable behavior and real business contracts rather than internal implementation details. What We're Looking For Required Qualifications & Skills * Ruby on Rails Expertise:

CEDENT

Ruby on Rails Software Engineer

$40 - $60/hr

We are looking for one more contract Software Engineer to support this team. * The work would be ... Looking for a backend focused Senior Software Engineer (10+ years) with expertise in Ruby on Rail ...

StrongMind

Principal Engineer (Ruby) - REMOTE

... contracts, and integration patterns to keep the cost of future changes low. - Sit on the ... Stay Hands-On - Spend meaningful time in the Ruby/Rails codebase, especially on critical paths ...

StrongMind

Principal Engineer (Ruby) - REMOTE

... contracts, and integration patterns to keep the cost of future changes low. - Sit on the ... Stay Hands-On - Spend meaningful time in the Ruby/Rails codebase, especially on critical paths ...

Scout ET

Ruby Developer

Richfield, MN · On-site

Contract 6+ Month on C2C Interview Mode: Phone + F2F (On-site interview required after a phone ... Experienced Ruby Ninja - Writing ruby without the need of Rails or ActiveSupport dependencies. 2.5+ ...

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How much do contract ruby rails jobs pay per year?

As of Aug 11, 2026, the average yearly pay for contract ruby rails in the United States is $122,113.00, according to ZipRecruiter salary data. Most workers in this role earn between $102,500.00 and $140,500.00 per year, depending on experience, location, and employer.

What is the difference between Contract Ruby Rails vs Contract Java Developer?

AspectContract Ruby RailsContract Java Developer
Required CredentialsProficiency in Ruby, Rails framework, SQL, GitProficiency in Java, Spring framework, SQL, Git
Work EnvironmentStartups, tech companies, web development projectsEnterprises, financial institutions, large-scale applications
Employer & Industry UsageWeb app development, SaaS platformsBackend systems, enterprise solutions
Search & Comparison IntentOften compared for web development rolesCompared for enterprise backend projects

Contract Ruby Rails and Contract Java Developer roles share similarities in requiring programming expertise, version control, and work in tech environments. However, Ruby Rails focuses on web development with Ruby, while Java emphasizes enterprise backend solutions. Both are in high demand but serve different project types and industries.

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Contract Ruby Rails jobs near you
Infographic showing various Contract Ruby Rails job openings in the United States as of August 2026, with employment types broken down into 3% As Needed, 83% Full Time, 10% Part Time, 3% Contract, and 1% Nights. Highlights an 89% Physical, 2% Hybrid, and 9% Remote job distribution, with an average salary of $122,113 per year, or $58.7 per hour.

Sr Ruby on Rails Engineer

Judge Group, Inc.

Dallas, TX • On-site

$145K - $165K/yr

Other

Posted 13 days ago

Job description

Location: Dallas, TX Salary: $145,000.00 USD Annually - $165,000.00 USD Annually Description: Our client is currently seeking a Sr Ruby on Rails Engineer
We are seeking a Senior Rails Engineer to help lead both the modernization of our current B2B/B2C eCommerce platform and the evolution of how our engineering organization builds software.
Our core application is undergoing a strategic platform modernization: systematically retiring legacy PHP services into a modern, Rails-centered architecture using the Strangler Fig pattern. At the same time, we are actively building an AI-enabled software factory-changing how our team turns business intent into safe, maintainable, production-ready software.
In this role, AI acts as a key accelerator for research, generation, and execution, but core engineering judgment, architectural integrity, and production safety remain fully human responsibilities. Leadership here is demonstrated through end-to-end ownership, technical influence, mentoring, and rigorous judgment.
Key Responsibilities
1. Platform Modernization (40%)
  • Strangler Fig Execution: Lead the incremental, reversible retirement of legacy PHP capabilities into Ruby on Rails without relying on high-risk, "big-bang" migrations.
  • End-to-End Capability Ownership: Trace legacy capabilities across all touchpoints-server-rendered or React UIs, API boundaries, business logic, persistence layers, background queues, permissions, and operational dependencies.
  • Behavior Preservation: Maintain strict parity with existing systems during migrations, ensuring any deliberate behavior changes are identified, approved, and thoroughly tested.
  • Legacy Cleanup: Ensure full migration completion by safely removing obsolete entry points, feature flags, dead code, and temporary bridges after Rails becomes authoritative.
2. Software Factory & AI Engineering (30%)
  • Agentic Workflow Leadership: Direct specialized AI developer agents across discovery, implementation, testing, documentation, and QA handoffs.
  • Adversarial Review: Critically evaluate AI-generated code for semantic parity gaps, missed edge cases, security risks, performance bottlenecks, and weak test coverage.
  • Factory Optimization: Help design and refine our AI workflows-defining clear agent roles, acceptance criteria, automated guardrails, evidence capture, and QA controls.
  • Standardization: Turn lessons learned, QA findings, and edge-case corrections into reusable prompt architectures, automated linters, and team engineering standards.
3. eCommerce Product & Platform Development (20%)
  • Core Commerce Features: Design and implement capabilities across complex domain areas, including product catalogs, search, dynamic pricing, quoting, order processing, and ERP integrations.
  • Extension & Plugin Architecture: Contribute to a governed plugin/extension architecture that allows internal and external teams to build extensions safely without compromising the core platform.
  • Domain Discovery: Collaborate directly with product managers and business stakeholders to uncover hidden domain rules, resolve ambiguity, and translate business needs into testable requirements.
4. Engineering Excellence (10%)
  • Operational Safety: Improve shared CI/CD pipelines, automated testing, deployment safety controls, feature flagging, and production observability.
  • Agile Execution: Actively participate in 1-week Scrum sprints (planning, standups, reviews, and retrospectives).
  • Behavioral Testing: Write tests focused on observable behavior and real business contracts rather than internal implementation details.
What We're Looking For
Required Qualifications & Skills
  • Ruby on Rails Expertise: Deep, production-scale experience building, debugging, refactoring, and scaling Rails applications.
  • Legacy Modernization Experience: Proven track record of incrementally replacing legacy codebases or monoliths while maintaining continuous delivery.
  • eCommerce / Complex Domain Depth: Experience handling complex transaction flows, product catalogs, pricing/tax rules, inventory management, or enterprise integrations.
  • Full-Stack Ownership: Ability to own a feature end-to-end-from frontend rendering and API contracts to Rails logic, database queries, background jobs, and operational deployment.
  • Data & Systems Architecture: Strong relational database design skills (PostgreSQL/MySQL), state machine management, caching, message queues, and async background processing.
  • AI Tooling & Critical Evaluation: Practical experience directing AI coding agents, with a clear ability to spot confidently wrong outputs, hallucinated logic, or unsafe state changes.
  • Pragmatic Testing & Safety: Strong focus on automated testing, feature flags, canary rollouts, and rollback readiness.
Preferred Qualifications
  • Experience integrating Rails applications with enterprise ERP systems (e.g., NetSuite, SAP, or similar).
  • Modern frontend development experience with React.
  • Deep understanding of B2B/B2C commerce flows (e.g., custom price books, tiered quoting, complex shipping/tax workflows).
  • Familiarity with structured AI agent frameworks or orchestration workflows (e.g., LangGraph, CrewAI, AutoGen, or custom agent systems).
  • Experience designing multi-tenant or governed plugin architectures.

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