Remote Senior Full-Stack Engineer for AI-Driven SaaS

Simulations Plus; Northern (KY); Hybrid; USD 90,000 - 110,000; Full time

Benefits offered by this job

Fully remote work

Flexible schedules

Annual bonus

Health coverage

Job summary

Simulations Plus is seeking a Senior Full-Stack Engineer to join a lean, high-velocity team delivering web/SaaS and AI-powered features. You will ship back-end, front-end, and LLM-integrated surfaces across a small department with a strong emphasis on practical AI integration and robust data flows.

The role focuses on building scalable APIs, UI and data wiring, and collaborating with an AI lead to embed intelligent capabilities into our platform.

Qualifications

• 3+ years of professional software engineering experience with shipped full-stack work
• Experience with document or NoSQL databases such as MongoDB
• Comfort building and consuming REST APIs and JSON contracts
• Genuine interest in agents, MCP, and applied AI and the drive to build real expertise
• Fluency using AI coding tools (Claude, Cursor, Copilot) in daily workflow

Responsibilities

• Feature Delivery Across the Stack
• Own features end-to-end across Node.js/Express backends and React/Tailwind frontends
• Build the APIs, UI, and data flows behind real customer-facing functionality
• Contribute to data, auth, and service patterns the platform builds on
• AI Feature Integration and integrate LLM-powered functionality into product surfaces
• Wire frontends to LLM and MCP endpoints; handle streaming, errors, and degraded states
• Contribute to evals, fixtures, and tooling that support the AI side of the team
• Bring full-stack range to a team that values flexibility across backend, frontend, and AI
• Contribute to code reviews, documentation, and team engineering practices
• Apply AI coding tools in daily engineering workflow

Skills

Full-stack development

REST APIs

AI tooling

MongoDB

AI coding tools

Education

Bachelor's degree in CS or related

Tools

AWS

CI/CD

Job description

Simulations Plus is seeking a Senior Full-Stack Engineer to join a lean, high-velocity team delivering web/SaaS and AI-powered features. You will ship back-end, front-end, and LLM-integrated surfaces across a small department with a strong emphasis on practical AI integration and robust data flows.

The role focuses on building scalable APIs, UI and data wiring, and collaborating with an AI lead to embed intelligent capabilities into our platform.