Senior Full-Stack Engineer - Build Lasting SaaS with AI

Kingfisher Recruiting; North Carolina; On-site; USD 120,000 - 180,000; Full time

Job summary

Kingfisher Recruiting is partnering with a mission-driven SaaS company to hire a Senior Software Engineer who enjoys building products, solving complex problems, and having a real voice in technical decisions. You’ll help develop new technology from the ground up and have a lasting impact over years to come.

You will work with Ruby on Rails, React/TypeScript, and PostgreSQL on AWS, applying modern AI-assisted tooling to accelerate development and delivery.

Qualifications

• 5+ years of professional software engineering experience, ideally SaaS or web-based products.
• Strong hands-on experience with Ruby on Rails, React/TypeScript, and PostgreSQL.
• Working knowledge of AWS and cloud-based application development.
• Experience owning software features from design through production.
• Experience with automated testing, CI/CD, and modern software engineering practices.
• Practical experience using AI coding tools such as Claude Code, GitHub Copilot, Codex, or similar technologies.

Responsibilities

• Build and own new product features from initial design through testing and deployment.
• Develop full-stack SaaS applications using Ruby on Rails, React/TypeScript, and PostgreSQL.
• Shape technical design decisions, application architecture, APIs, and database structures.
• Leverage AI-assisted development tools to accelerate coding, testing, debugging, and productivity.
• Collaborate with a Principal Engineer to evolve AI-driven engineering practices.
• Mentor other engineers through code reviews and technical guidance.
• Own production performance, quality, scalability, and continuous improvement.

Skills

Mentoring

Problem solving

Independent work

Tools

Ruby on Rails

React/TypeScript

PostgreSQL

AWS

CI/CD

Claude Code

GitHub Copilot

Codex

Job description

Kingfisher Recruiting is partnering with a mission-driven SaaS company to hire a Senior Software Engineer who enjoys building products, solving complex problems, and having a real voice in technical decisions. You’ll help develop new technology from the ground up and have a lasting impact over years to come.

You will work with Ruby on Rails, React/TypeScript, and PostgreSQL on AWS, applying modern AI-assisted tooling to accelerate development and delivery.