Full Stack Ruby on Rails Software Engineer

icortica Inc; Billerica (MA); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health Care Plan

Paid Time Off

Job summary

icortica Inc seeks a Full Stack Ruby on Rails Engineer to build scalable applications and leverage AI in development and product features. You will work across the stack—from backend services and APIs to front-end interfaces—to deliver data-driven insights and workflow automation.

Responsibilities include integration work, full stack development with Rails and PostgreSQL, and a strong emphasis on code quality, performance, and security.

Qualifications

• 1-2+ years in a startup environment.
• 5+ years professional experience with Ruby on Rails.
• Solid PostgreSQL and relational database design knowledge.
• Understanding of multi-tenant architectures and data privacy/security best practices.
• Experience with background job processing and automated testing.
• Front-end experience with HTML, CSS (Tailwind), JavaScript, and Hotwire (Stimulus and Turbo).
• Demonstrated experience using AI tools (Cursor, Codex, Claude Code) in development.
• Experience building reliable integrations with third-party APIs.

Responsibilities

• Develop integrations with third-party systems and our API.
• Build and maintain full stack web apps with Ruby on Rails, PostgreSQL, and modern front-end tech.
• Write high-quality, well-tested code.
• Optimize performance, scalability, and security of applications.
• Collaborate with product and design to deliver features end-to-end.
• Contribute to code reviews, architecture discussions, and engineering best practices.

Skills

Ruby on Rails

PostgreSQL

Multi-tenant architectures

Background job processing

Automated testing

HTML/CSS/JavaScript

Tailwind

Hotwire (Stimulus and Turbo)

AI tools in development

API integrations

Startup experience

Tools

Ruby on Rails

PostgreSQL

Tailwind

Hotwire

Stimulus

Turbo

Cursor

Codex

Claude Code

3rd party APIs

Job description

We are seeking a Full Stack Ruby on Rails Engineer who is skilled at building scalable applications and comfortable leveraging AI in both development workflows and product features. You will work across the stack, from backend services and APIs to front-end interfaces, helping us deliver data-driven insights and workflow automation.

Responsibilities

• Primary focus on developing integrations with third-party systems and our own API
• Build and maintain full stack web applications with Ruby on Rails, PostgreSQL, and modern front-end frameworks
• Write high-quality, well-tested code
• Optimize application performance, scalability, and security
• Collaborate with product and design teams to deliver features end-to-end
• Contribute to code reviews, architecture discussions, and engineering best practices

• 1-2+ years in a startup environment
• Strong proficiency with Ruby on Rails (5+ years professional experience preferred)
• Solid understanding of PostgreSQL and relational database design
• Knowledge of multi-tenant architectures and data privacy/security best practices
• Experience with background job processing and automated testing
• Front-end experience with HTML, CSS (Tailwind), JavaScript, and Hotwire (Stimulus and Turbo).
• Demonstrated experience using AI tools (Cursor, Codex, Claude Code) in the development process
• Experience with crafting fault tolerant, resilient, and observable integrations with 3rd party API’s

• Health Care Plan (Medical & Dental)
• Paid Time Off (Vacation & Public Holidays)