Senior Ruby on Rails Engineer - GenAI & API

Valiant Technologies LLC; Austin (TX); On-site; USD 140,000 - 190,000; Full time

Job summary

Valiant Technologies LLC in Austin, TX seeks a senior software engineer to design, build, and scale full‑stack web applications. You will work with Ruby on Rails and Ruby, shape APIs, and optimize data stores while collaborating across business, database, and platform teams.

Experience integrating GenAI into development workflows is a plus. The role requires strong communication, problem‑solving, and a drive to deliver robust, high‑performance software in a fast‑paced environment.

Qualifications

• 6+ years of senior software engineering experience.
• 6+ years of hands-on experience with Ruby on Rails and Ruby.
• 6+ years of experience in API design and interface technologies, including JSON, ProtoBuf, REST, RPC, and XML.
• Knowledge of integrating GenAI into development workflows.

Responsibilities

• Design, develop, test, and implement large-scale web applications and full-stack components across front-end GUI and backend.
• Build and maintain web applications using Ruby on Rails and Ruby as core technologies.
• Design and develop APIs and interface technologies, including JSON, ProtoBuf, REST, RPC, and XML.
• Design, develop, and optimize databases using PostgreSQL, MySQL, and related database technologies.
• Troubleshoot and resolve application issues related to performance, response times, capacity, and system limitations.
• Ensure data quality, integrity, and consistency across applications.
• Collaborate with business partners, database, system and networking teams, and external vendors.
• Create and maintain technical documentation for developed applications.
• Integrate GenAI into software development workflows.

Skills

Senior software engineering

Ruby on Rails

API design

GenAI integration

Tools

RSpec

MiniTest

CircleCI

Jenkins

AWS

GoLang

Java

Erlang

C++

Rust

Job description

Valiant Technologies LLC in Austin, TX seeks a senior software engineer to design, build, and scale full‑stack web applications. You will work with Ruby on Rails and Ruby, shape APIs, and optimize data stores while collaborating across business, database, and platform teams.

Experience integrating GenAI into development workflows is a plus. The role requires strong communication, problem‑solving, and a drive to deliver robust, high‑performance software in a fast‑paced environment.