Remote Senior Software Engineer - Full-Stack Ruby on Rails

Senior Software Engineer - Platform

Location: Remote

About Monoline

Monoline is redefining the standalone personal umbrella insurance market with an unwavering focus on underwriting excellence, disciplined risk selection, and long-term profitability. Founded by proven entrepreneurs with a track record of successful ventures, Monoline is built on the principles of curiosity, innovation, and customer-centric solutions.

We believe in challenging the status quo, bringing fresh perspectives to a traditional industry, and designing intuitive, straightforward, and consistent products. Our philosophy is rooted in empathy – understanding customer needs to create truly helpful solutions. We lead with gratitude, valuing every detail and the relationships we build along the way.

Our Core Values Guide Everything We Do

• People First – We build meaningful relationships, treating our team, partners, and customers with respect and care.
• Positive Presence – We bring energy and optimism to every challenge, fostering a supportive and motivated team culture.
• Batteries Included – We take initiative, think independently, and execute at a high level without waiting for direction.
• Always Curious – We seek knowledge, challenge assumptions, and continuously refine our approach to be the best at what we do.
  
  

About The Role

We are seeking a talented and experienced Full Stack Software Engineer to join our remote team. In this role, you will play a pivotal part in developing and enhancing our platform, working closely with a team of dedicated professionals committed to delivering exceptional user experiences.

Key Responsibilities

• Design and develop Ruby on Rails applications that power our quoting and pricing system, and our underwriting risk assessment platform, with integrated AI capabilities for enhanced decision-making.
• Implement prompt engineering strategies and AI workflow orchestration using industry-standard AI evaluation tools like LangFuse and LangSmith to measure model performance and optimize outputs.
• Collaborate with cross-functional teams to architect full-stack solutions that integrate AI models, intelligent automation, and traditional backend services within a Rails environment.
• Contribute to our platform's core infrastructure, ensuring high performance, scalability, and responsiveness across AI and non-AI systems.
• Lead code reviews, testing, and documentation practices that maintain code quality and establish best practices for AI integration in production systems.
• Stay at the forefront of emerging AI technologies and evaluation frameworks to continuously enhance our platform's capabilities and underwriting accuracy.
  
  

Qualifications

• Proven experience as a Senior Software Engineer or similar role with demonstrated expertise in Ruby on Rails development and modern full-stack application architecture.
• Experience with PostgreSQL, Redis, and Docker for building scalable systems.
• Familiarity with cloud services such as AWS and Render.
• Strong understanding of authentication, encryption, and security best practices.
• Excellent problem-solving skills, attention to detail, and ability to think architecturally.
• Strong communication and collaboration abilities in a remote work environment.
• Experience designing and implementing prompt engineering strategies with understanding of how to measure and evaluate AI model outputs.
• Hands-on experience orchestrating AI workflows and integrating AI capabilities into Rails applications.
• Knowledge of building, configuring, and integrating third-party AI models and APIs into software systems.
  
  

Why Monoline

Join a founder-led company built on underwriting discipline and long-term profitability. This is a rare opportunity to shape core platform infrastructure and internal tooling from the ground up with real ownership over technical direction. Work alongside a small, high-impact team that values curiosity, clean engineering, and shipping things that matter. Be part of a company committed to becoming the industry leader in standalone personal umbrella insurance.

What We Offer

• Competitive salary paid in USD.
• Annual company performance bonus
• Stock options to share in the company's success.
• Flexible, fully remote work environment.
• Opportunity to be part of a dynamic, innovative team shaping the future of insurtech through AI-driven innovation.
  
  

Apply Now

If you’re passionate about building high-quality software and resilient infrastructure, and want to make a meaningful impact in the insurance industry, we’d love to hear from you. Apply today and become a part of Monoline’s exciting journey. Show more Show less