Senior Full-Stack Engineer — AI-Driven, Onsite NYC

Ontra; Concord (CA); On-site; USD 150,000 - 190,000; Full time

Benefits offered by this job

Twice yearly team offsites

Paid flexible time off

Paid parental leave and benefits

Employer-supported retirement benefits

Monthly phone and internet reimburse

Learning and development resources

Medical, dental, and vision insurance

Job summary

Ontra is seeking a Senior Software Engineer to design and implement AI-powered features for a web-based product. You will work across frontend and backend with Ruby on Rails and React, delivering iterative improvements and shipping production-ready code.

The role requires 5+ years in full-stack development and experience with MVC frameworks, AI tooling, and collaborative cross-functional work. On-site in New York three days a week is expected.

Qualifications

• 5+ years as a full-stack engineer with MVC frameworks.
• Proficiency in Ruby on Rails or Python/Flask or Java/Spring and React.
• Experience with AI features and LLMs is desirable.
• Ability to work independently or with a small team.
• Strong problem-solving and ownership.

Responsibilities

• Build AI-powered features from prototype to production.
• Develop and scale a web-based application from frontend to backend using Rails and React.
• Take ownership of project progress and make decisions independently.
• Continuously ship and improve code with stakeholder feedback.

Skills

Ruby on Rails

Python Flask

Java Spring

AI tools

Education

Bachelor's degree in CS or related field

Tools

React

PostgreSQL

AWS

Job description

Ontra is seeking a Senior Software Engineer to design and implement AI-powered features for a web-based product. You will work across frontend and backend with Ruby on Rails and React, delivering iterative improvements and shipping production-ready code.

The role requires 5+ years in full-stack development and experience with MVC frameworks, AI tooling, and collaborative cross-functional work. On-site in New York three days a week is expected.