Full Stack Ruby on Rails Software Engineer

icortica Inc; Billerica (MA); On-site; USD 100,000 - 150,000; Full time

Benefits offered by this job

Health Care Plan (Medical & Dental)

Paid Time Off (Vacation & Public Holi

Job summary

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

Responsibilities include integrating with third-party systems, building full-stack apps with Rails and PostgreSQL, and collaborating with product and design teams to ship features end-to-end.

Qualifications

• 1-2+ years in a startup environment.
• 5+ years of professional Ruby on Rails experience.
• Strong PostgreSQL and relational database design knowledge.
• Experience with multi-tenant architectures and data privacy.
• Experience with background jobs and automated testing.
• Frontend fundamentals with HTML, CSS (Tailwind), JavaScript, and Hotwire.
• Experience using AI tools in development.

Responsibilities

• Develop integrations with third-party systems and our own API.
• Build full-stack applications with Rails, PostgreSQL, and modern front-end frameworks.
• Write high-quality, well-tested code.
• Optimize performance, scalability, and security.
• Collaborate with product and design teams to deliver features end-to-end.
• Participate in code reviews, architecture discussions, and engineering best practices.

Skills

Ruby on Rails

PostgreSQL

Frontend development

AI tools

API integrations

Testing

Security

Code reviews

Tools

Tailwind CSS

Hotwire

REST APIs

Git

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)