Principal JavaScript Full-Stack AI Engineer (Onsite Bothell)

Cystems Logic; Bothell (WA); On-site; USD 150,000 - 190,000; Full time

Job summary

Cystems Logic is seeking a Principal AI - Software Engineer in Bothell, WA for a long-term contract. You will drive end-to-end AI-enabled software development, focusing on JavaScript full-stack delivery and AI integration.

Ideal candidates have 7+ years in full-stack roles, strong AI/ML expertise, and hands-on experience with cloud platforms and modern tooling. This onsite role requires local candidates and coding interviews at the client site.

Qualifications

• 7+ years in full-stack development including front-end, back-end, and DB tech.
• Bachelor’s degree in computer science or related field preferred.
• Proficiency in Python, JavaScript, Java, Next.js, Node.js, React.
• Strong GenAI/LLM experience with MCP, Vector DB, and RAG.
• Cloud exposure: GCP, Azure, AWS; OpenStack, Terraform, Ansible/Chef.
• Experience with LLM observability, analytics, and annotation tools.
• AI/ML development experience.
• Databases like Cassandra, MongoDB or similar.
• Microservices, REST APIs, caching experience.
• Docker and Kubernetes familiarity.
• Git, CI/CD tools (Jenkins, GitHub, Maven, Nexus, JFrog, Sonar).
• Unit testing with JUnit, Mockito/JMock, Selenium, Postman.
• Strong problem solving, communication, and leadership.
• Mentoring and technical leadership experience.
• Nice-to-have: DialogFlow, Vertex AI, GraphQL, BigQuery.

Responsibilities

• Lead full-stack AI software engineering efforts and design system architecture.
• Develop and maintain microservices and RESTful APIs.
• Mentor engineers and provide technical leadership across teams.
• Collaborate with cloud and AI teams, ensure scalable solutions.
• Participate in hands-on coding interviews at client location.

Skills

JavaScript

Python

Node.js

React.js

React Native

GenAI

LLM Models

Cloud (GCP/Azure/AWS)

Kubernetes

Docker

REST APIs

Unit Testing

Mentoring

Education

Bachelor’s degree in CS/SE

Tools

LangSmith

LangFuse

Streamlit

Arize

LangGraph

Vertex AI

Job description

Cystems Logic is seeking a Principal AI - Software Engineer in Bothell, WA for a long-term contract. You will drive end-to-end AI-enabled software development, focusing on JavaScript full-stack delivery and AI integration.

Ideal candidates have 7+ years in full-stack roles, strong AI/ML expertise, and hands-on experience with cloud platforms and modern tooling. This onsite role requires local candidates and coding interviews at the client site.