Senior Full-Stack Engineer: AI Prototyping, Onsite NYC

Ontra, LLC; New York (NY); Hybrid; USD 140,000 - 200,000; Full time

Benefits offered by this job

Offsite retreats

Flexible time off

Parental leave

Retirement contributions

Phone stipend

Training & development

Medical insurance

Job summary

Ontra, LLC is seeking a Senior Software Engineer in New York. You will design innovative AI-powered features, build a web application with Ruby on Rails and React, and collaborate with cross-functional teams. The role emphasizes ownership and iterative delivery in a fast-paced environment.

You will work on-site in New York three days per week, with opportunities to shape product direction while solving ambiguous problems and delivering user-centered experiences.

Qualifications

• 5+ years as a full-stack software engineer with MVC frameworks (Rails, Flask, Spring).
• Proficiency with AI tools and building AI-driven features.
• Track record of end-to-end project delivery from concept to production.
• Ability to work independently or with one other engineer, owning outcomes.
• Iterative development with stakeholder feedback to continuously improve product.

Responsibilities

• Build AI-powered product features and apply AI tools in your workflow from prototyping to code review.
• Develop and scale a web application using Ruby on Rails and React from frontend to backend.
• Take ownership of project progress and drive decisions with minimal guidance.
• Continuously ship and improve code by incorporating stakeholder feedback quickly.
• Engage with stakeholders to understand needs and integrate feedback into development.
• Collaborate closely with cross-functional teammates to align on development strategies for the prototype.

Skills

Full-stack development

MVC frameworks

Ruby on Rails

Python Flask

React

AI tooling

Job description

Ontra, LLC is seeking a Senior Software Engineer in New York. You will design innovative AI-powered features, build a web application with Ruby on Rails and React, and collaborate with cross-functional teams. The role emphasizes ownership and iterative delivery in a fast-paced environment.

You will work on-site in New York three days per week, with opportunities to shape product direction while solving ambiguous problems and delivering user-centered experiences.