Senior Ruby Developer Job Description for Backend Engineering Teams

The Senior Ruby Developer job description below outlines a senior engineering role responsible for designing, implementing and maintaining server-side applications. Candidates should be experienced Ruby developers who take ownership of code quality, system design and mentoring other engineers.

Senior Ruby Developer Job Profile

The Senior Ruby Developer is a senior technical contributor responsible for delivering robust, scalable backend solutions within a multidisciplinary team. This role involves contributing to architecture, leading complex features from design to production and ensuring high standards of code quality and operational reliability.

The purpose of the role is to translate product and business requirements into maintainable Ruby code, optimise system performance and support continuous improvement of development practices. The postholder will collaborate with product owners, engineers and stakeholders to align technical direction with organisational objectives.

Senior Ruby Developer Job Description

This role requires hands-on development of backend components, designing APIs and data models that support business use cases. The Senior Ruby Developer is expected to write clear, maintainable code, author comprehensive tests and lead code reviews to uphold best practices. They will own components through the full lifecycle including deployment and post-release monitoring.

In addition to individual contribution, the Senior Ruby Developer will provide technical leadership by mentoring colleagues, advising on architecture decisions and advocating for reliable delivery practices. The role operates within an agile delivery context and involves regular collaboration with product management, QA and operations to balance technical trade offs and delivery timelines.

Senior Ruby Developer: Duties and Responsibilities

• Design and implement server-side features and services using Ruby that meet functional requirements and non-functional constraints.
• Develop and maintain RESTful APIs and data access layers with attention to consistency and performance.
• Write clear, maintainable code and comprehensive automated tests to ensure long term reliability.
• Conduct and lead regular code reviews to enforce coding standards and promote knowledge sharing.
• Analyse and optimise application performance, addressing bottlenecks at the code and data layer.
• Troubleshoot and resolve production incidents, perform root cause analysis and implement corrective actions.
• Collaborate with product owners and stakeholders to refine requirements and estimate effort for delivery.
• Contribute to architectural decisions and system design, evaluating trade offs and scalability implications.
• Mentor and coach junior and mid-level engineers, providing constructive feedback and development guidance.
• Define and promote best practices for testing, code quality and maintainability across the engineering team.
• Prepare and maintain technical documentation for modules, APIs and operational procedures.
• Participate in release planning, deployment activities and post-release reviews to improve delivery processes.
• Ensure appropriate security and data protection considerations are applied in code and design.
• Contribute to estimating, prioritising and planning work to meet delivery objectives and timelines.

Senior Ruby Developer: Requirements and Qualifications

• Proven experience as a software developer with significant practical experience writing production Ruby code.
• Strong understanding of web application architecture, request lifecycle and server-side design patterns.
• Experience designing and consuming APIs and working with relational and non-relational data models.
• Solid testing mindset with experience in unit, integration and acceptance testing practices.
• Experience diagnosing and resolving performance and scalability issues in live systems.
• Familiarity with version control concepts and collaborative development workflows.
• Proven ability to mentor engineers and influence technical decisions across a team.
• Good communication skills with the ability to explain technical topics to non-technical stakeholders.
• Experience participating in system design and producing appropriate technical documentation.
• Strong problem solving and analytical skills with attention to detail and quality.
• Ability to prioritise work, balance technical debt and delivery goals and work under limited supervision.
• Experience working within iterative development practices and contributing to continuous improvement.