Gen AI Full Stack Engineer – Lead & Hands-on

Rohirrim; McLean (VA); Hybrid; USD 130,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

Onsite 3 days/week in McLean

Job summary

Rohirrim is seeking a Full Stack Engineer to mentor engineers, provide technical direction, and drive development of Gen AI-powered enterprise applications. The role splits ~50/50 backend/frontend with end-to-end ownership, from APIs and databases to polished UI, and close collaboration with senior engineers, PMs, and UI/UX designers.

Ideal candidates are hands-on, enjoy fast-paced product development, and want growth in AI/LLM app development within an enterprise SaaS context.

Qualifications

• 3+ years of professional experience as a Full Stack or Software Engineer.
• Hands-on experience with Nest.js/Node.js or a similar backend framework.
• Working knowledge of SQL, including writing queries and basic schema design.
• Familiarity with CI/CD tooling; Azure DevOps a plus.
• Interest in generative AI and eagerness to build LLM-powered features.
• Experience integrating with LLM providers/APIs (e.g., OpenAI, Anthropic, Azure OpenAI).
• Exposure to prompt engineering or retrieval-augmented generation (RAG).
• Experience with Angular specifically.
• Experience in enterprise SaaS, government, or aerospace/defense environments

Responsibilities

• Build and maintain backend services and APIs in Nest.js/Node.js with databases, LLMs, and external systems.
• Develop frontend features in Angular/TypeScript for intuitive UX.
• Implement generative AI features with LLM integrations and retrieval workflows.
• Write efficient SQL queries and help design database schemas for new features.
• Own features end-to-end from design to deployment, including testing and reviews.
• Contribute to system design discussions on AI capabilities in the platform.
• Collaborate with cross-functional teams to deliver secure, scalable AI solutions.

Skills

Nest.js/Node.js

SQL queries & schema design

Angular

Generative AI & LLM concepts

Enterprise SaaS/government/aerospace

Tools

Azure DevOps

Job description

Rohirrim is seeking a Full Stack Engineer to mentor engineers, provide technical direction, and drive development of Gen AI-powered enterprise applications. The role splits ~50/50 backend/frontend with end-to-end ownership, from APIs and databases to polished UI, and close collaboration with senior engineers, PMs, and UI/UX designers.

Ideal candidates are hands-on, enjoy fast-paced product development, and want growth in AI/LLM app development within an enterprise SaaS context.