Senior Ruby on Rails Engineer - APIs & Full-Stack (Austin)

Quantum Technologies. LLC; Austin (TX); On-site; USD 83,000 - 103,000; Full time

Job summary

Quantum Technologies. LLC in Austin, TX is seeking a Senior Ruby on Rails Engineer to design, develop, test, and scale web applications.

You will work on both frontend GUI and backend services, design and maintain RESTful APIs, and optimize database queries in PostgreSQL and MySQL. The ideal candidate has 6+ years in software engineering, strong Rails expertise, and experience with AWS, CI/CD tools like CircleCI/Jenkins, and GenAI integration into development workflows.

Qualifications

• 6+ years of experience in Senior Software Engineering.
• Strong hands-on experience with Ruby on Rails.
• Design, develop, test, and implement large-scale web applications.
• Work on both frontend GUI and backend application development.
• Design, develop, and maintain APIs and system interfaces.
• Hands-on experience with REST, RPC, JSON, ProtoBuf, and XML.
• Strong database design and query experience with PostgreSQL and MySQL.
• Troubleshoot application performance, response time, capacity, and system issues.
• Ensure application data quality, integrity, and consistency.
• Collaborate with business teams, technology teams, and external vendors.
• Maintain technical documentation for developed applications.
• Knowledge of integrating GenAI into software development workflows.
• Preferred experience with RSpec, MiniTest, CircleCI, Jenkins, DevOps, and AWS.
• Knowledge of GoLang, Java, C++, Rust, Erlang, or similar programming languages is preferred.

Responsibilities

• Design, develop, test, and maintain large-scale web applications.
• Build and maintain RESTful APIs and system interfaces.
• Develop both frontend GUI and backend services.
• Troubleshoot performance, latency, capacity, and reliability issues.
• Collaborate with cross-functional teams and external vendors.
• Maintain comprehensive technical documentation.

Skills

Ruby on Rails

REST

RPC

JSON

ProtoBuf

XML

PostgreSQL

MySQL

Go

Java

C++

Rust

Erlang

GenAI

AWS

CircleCI

Jenkins

DevOps

Tools

RSpec

MiniTest

CircleCI

Jenkins

DevOps

AWS

Job description

Quantum Technologies. LLC in Austin, TX is seeking a Senior Ruby on Rails Engineer to design, develop, test, and scale web applications.

You will work on both frontend GUI and backend services, design and maintain RESTful APIs, and optimize database queries in PostgreSQL and MySQL. The ideal candidate has 6+ years in software engineering, strong Rails expertise, and experience with AWS, CI/CD tools like CircleCI/Jenkins, and GenAI integration into development workflows.