Senior Full Stack Developer – AI/LLM Tools

Flippa.com; Great Falls Crossing (VA); On-site; USD 100,000 - 150,000; Full time

Job summary

A leading research and development lab in Virginia is seeking a Senior Full Stack Developer to create innovative internal tools leveraging AI and LLMs. This role involves full-stack development, collaboration with various teams, and contributing to the design of an AI platform to enhance research operations. The company offers competitive benefits including 401(K) matching, free healthcare, and unlimited paid time off.

Benefits

401(K) matching

Free healthcare plans

Free Food

Unlimited Paid Time Off

On-campus gym

Other benefits

Qualifications

• 7+ years of experience building full-stack applications.
• Strong experience in back-end development using Node.js, Python, or Java.
• Expertise in modern front-end frameworks (e.g., React, Angular, Vue).

Responsibilities

• Design and develop robust full-stack applications focused on research enablement.
• Integrate LLMs into production systems for document generation and semantic search.
• Collaborate with stakeholders to identify needs and deliver software solutions.

Skills

Back-end development

Front-end development

LLMs

Cloud environments

Communication

Tools

Node.js

Python

React

Job description

Senior Full Stack Developer – AI/LLM Tools

About Ofinno:
Ofinno is a leading research and development lab headquartered in Reston, Virginia, specializing in advancing communication and media standards. Our team’s innovative work has led to significant contributions to technologies such as 5G cellular, Wi-Fi, and media compression. Ofinno holds strategic partnerships and licensing agreements with several of the world’s leading technology companies that use such technologies. At Ofinno, we foster an environment of collaboration and excellence, where researchers can focus on delivering breakthroughs that shape the future of technology.

Position Overview:
We are looking for a Senior Full Stack Developer to lead the creation of next-generation internal tools that leverage Large Language Models (LLMs) and agentic frameworks to accelerate our research and intellectual property operations.
In this role, you will work across the full stack—designing and developing intelligent, scalable applications that integrate state-of-the-art AI into the workflows of researchers, patent attorneys, and licensing professionals. From helping generate and refine technical disclosures to enabling semantic search across internal databases, your work will directly support high-value innovation.
You will also play a strategic role in shaping our AI platform architecture and championing thoughtful, usable tools across the organization.

Key Responsibilities:
As a Senior Full Stack Developer – AI/LLM Tools, you will:

• Design and develop robust full-stack applications focused on research enablement and IP workflow optimization.
• Integrate LLMs into production systems for document generation, summarization, tagging, classification, semantic search, and agentic execution.
• Collaborate with research, IP, and executive stakeholders to identify needs, translate them into requirements, and deliver elegant software solutions.
• Contribute to the design and implementation of our internal AI agent platform, including vector search and retrieval pipelines.
• Build intuitive front-end interfaces using frameworks like React and scalable back-end services using Python or Node.js.
• Ensure reliability, performance, and usability through rigorous engineering practices.

Qualifications:

• 7+ years of experience building full-stack applications.
• Strong experience in back-end development using Node.js, Python, or Java.
• Expertise in modern front-end frameworks (e.g., React, Angular, Vue).
• Experience working with LLMs, AI agents, or RAG architectures.
• Experience designing, deploying, and scaling web apps in a cloud environment.
• Strong communication skills and the ability to translate technical capabilities into user value.
• Proven ability to take projects from concept to production independently or as a team lead.

What Else You Should Know:
Our people are ourbusiness.We know youhave tosee it to believe it, but here are some of the perks you can count on:

• 401(K) matching -- We help you plan and save for retirement with a 401(K) matching program that’s available on day one.
• Freehealthcare plans -- Ofinno covers full premiums for you are your family on select healthcare plans, including employer HSA contributions if applicable.
• Free Food -- Our kitchen is always fully stocked, including lunch, protein bars, fruit, sodas, coffee, and tea.
• Unlimited Paid Time Off -- Our lives are enriched by family time, vacations, and personal time. We offer unlimited paid time off and sick leave.
• On-campus gym -- Unwind, reduce stress and feel great – even when you’re at work.
• Other benefits, toolong to list -- Please discuss with our great People Ops team about additional benefits offered.

What Now?
What are you waiting for? We hope you will click on the link and forward your credentials to us today.All your information will be kept confidential according to EEO guidelines.