Ruby on Rails Software Engineer

Qualis1 Inc.; Austin (TX); On-site; USD 96,000 - 152,000; Full time

Job summary

Qualis1 Inc. in the United States is seeking a Senior Ruby on Rails Software Engineer for a long-term contract to design and build large-scale web applications, spanning front-end GUI and back-end services. You will work across teams to deliver reliable APIs and performant systems.

The role emphasizes API design, DevOps, CI pipelines, and integrating GenAI into development workflows. Onsite positions are in Austin, TX and Sunnyvale/Sacramento, CA with collaboration across locations.

Qualifications

• 6+ years in a senior software engineering role.
• 6+ years of the Ruby on Rails framework and Ruby as a core language.
• 6+ years of API design and interface technologies (JSON, ProtoBuf, REST, RPC, XML, etc.).
• Knowledge of integrating GenAI into development workflows.

Responsibilities

• Design, code, test, and implement large-scale web applications and components across the full stack (front-end GUI and backend).
• Troubleshoot and resolve issues around performance, response times, capacity, and system limitations.
• Collaborate with internal business partners, internal technology resources, and external vendors; maintain applications and ensure data quality, integrity, and consistency.
• Create and maintain documentation for the applications you build.

Skills

Ruby on Rails

API design

Full-stack development

DevOps & CI/CD

AWS

Tools

CircleCI

Jenkins

AWS

Job description

Position: Ruby on Rails Software Engineer

Location: Austin, TX/Sunnyvale, CA/Sacramento, CA – Onsite

Type of Hire: Long Term Contract

Job Description:

• We are seeking a Senior Software Engineer responsible for the development and design of web applications and components across both front-end (GUI) and backend.
• You will design, code, test, and implement websites and applications for internal or external use, and troubleshoot issues around performance, response times, capacity, and system limitations.
• You’ll collaborate with internal business partners, internal technology resources (database, system, networking), and external vendors, and ensure data quality, integrity, and consistency across the organization.

Responsibilities:

• Design, code, test, and implement large-scale web applications and components across the full stack (front-end GUI and backend).
• Troubleshoot and resolve issues around performance, response times, capacity, and system limitations.
• Collaborate with internal business partners, internal technology resources, and external vendors; maintain applications and ensure data quality, integrity, and consistency.
• Create and maintain documentation for the applications you build.

Preferred Qualifications:

• Testing, CI, and DevOps - working knowledge of integrated testing frameworks (RSpec, Mini Test), CI suites (CircleCI, Jenkins), and DevOps and AWS infrastructure.
• Golang and Java - expert knowledge of Golang, Java, or a similar compiled, high- concurrency, lower-level language (Erlang, C++, Rust, etc.).
• Analytical, Problem Solving, and Communication Skills - excellent analytical, problem- solving, and communication skills, including cross-functional collaboration and relationship building.

Minimum Qualifications:

• 6+ years in a senior software engineering role.
• 6+ years of the Ruby on Rails framework and Ruby as a core language.
• 6+ years of API design and interface technologies (JSON, ProtoBuf, REST, RPC, XML, etc.).

Knowledge of integrating GenAI into development workflows.