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# Senior Software Engineer

- **Company:** The Smart
- **Location:** Cincinnati, OH, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Application Programming Interfaces (APIs), HTML5, Bootstrap (Software), Cascading Style Sheets (CSS), Code Review, Relational Databases, Software Debugging, ECMAScript, JQuery, PostgreSQL, MySQL, Ruby on Rails, Ruby, Software Engineering, Systems Integration, Web Applications, Cloud Platform System, ReactJS, Rspec, Backend, Git, Templating, Codebase, Restful APIs
- **Published:** October 28, 2026
- **Apply:** https://www.thejobnetwork.com/job/b74e001e-ff84-465e-865c-5c0e616b8832/senior-software-engineer

## About the Role

* 5+ years of professional software development experience with Ruby, preferably Ruby on Rails
 * Strong experience with server-rendered web applications (ERB or similar templating)
 * Solid hands-on skills in JavaScript (ES5/ES6), jQuery, HTML5, CSS, and Bootstrap
 * Demonstrated ability to work productively in legacy codebases and deliver under tight timelines
 * Experience with relational databases and SQL (PostgreSQL, MySQL, or similar)
 * Proficiency with Git and collaborative development workflows
 * Experience integrating with REST APIs and upstream or back-end services
 * Strong communication skills and comfort working with cross-functional teams

Preferred Qualifications

 * Experience with React, or with migrating legacy front ends to a modern JavaScript framework
 * Experience with Ruby testing frameworks such as RSpec or Minitest
 * Experience building multi-step, form-driven, customer-facing web applications
 * Background in financial services, healthcare, or another regulated industry
 * Familiarity with CI/CD pipelines and cloud environments

## Description

Our client is looking for an experienced Ruby developer to enhance and extend a customer-facing web application. The application is built entirely in Ruby, with server-rendered HTML views, plain JavaScript, jQuery, and Bootstrap. The client's long-term goal is to re-platform the application in React. For now, the priority is delivering meaningful enhancements to the current application before year-end. You'll work in an established codebase, partner with upstream infrastructure teams, and ship improvements quickly and safely.

What You'll Do

 * Design, build, and deliver enhancements to an existing Ruby-based web application
 * Develop and maintain server-rendered views (ERB/HTML) styled with Bootstrap
 * Write and refactor front-end behavior in plain JavaScript and jQuery
 * Navigate, debug, and improve a mature legacy codebase with minimal ramp-up time
 * Coordinate with upstream infrastructure and integration teams on dependencies, APIs, and deployments
 * Write clean, testable, well-documented code, and take part in code reviews
 * Troubleshoot production issues and keep the application stable while changes ship
 * Identify opportunities that set the application up for a future migration to React