Senior Full-Stack Engineer - Shape Scalable SaaS with AI

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

Job summary

KingRecruitingServices collaborates with a mission-driven SaaS company to recruit a Senior Software Engineer for full-stack development. You will own features from design to production, influence architectural decisions, and contribute to AI-enhanced engineering practices.

You will build with Ruby on Rails, React/TypeScript, and PostgreSQL on AWS, while mentoring peers and shaping the technology roadmap for long-term impact.

Qualifications

• 5+ years of professional software engineering experience, preferably 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.
• Strong problem-solving skills and the ability to work independently while collaborating with a team.
• Experience mentoring or providing technical guidance to other engineers.

Responsibilities

• Build and own new product features from initial design and development through testing, deployment, and ongoing enhancements.
• Develop full-stack SaaS applications using Ruby on Rails, React/TypeScript, and PostgreSQL.
• Help 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 establish and evolve AI-driven engineering practices.
• Mentor other engineers through code reviews, technical guidance, and knowledge sharing.
• Take ownership of production performance, quality, scalability, and continuous improvement.

Skills

Mentoring

Code reviews

Independent work

Tools

Ruby on Rails

React/TypeScript

PostgreSQL

AWS

CI/CD

Claude Code

GitHub Copilot

Codex

Job description

KingRecruitingServices collaborates with a mission-driven SaaS company to recruit a Senior Software Engineer for full-stack development. You will own features from design to production, influence architectural decisions, and contribute to AI-enhanced engineering practices.

You will build with Ruby on Rails, React/TypeScript, and PostgreSQL on AWS, while mentoring peers and shaping the technology roadmap for long-term impact.