Web Application Developer at Halian | Managed Services, Recruitment Agency & Contract Staffing Web Application Developer at Halian | Managed Services, Recruitment Agency & Contract Staffing in Mercer Island, Washington Posted in 15 days ago.

Type:

full-time Web Application Developer -

Agentic AI Location:

Bellevue, WA (100% Onsite) 6+ Month Contract US Citizen and Green Card holders Only - W2 Role About the Role We are seeking an experienced Web Application Developer with Agentic AI expertise to join a cutting-edge team focused on building intelligent, enterprise-grade web applications. This role will involve transforming AI-generated prototypes and concepts into secure, scalable, and production-ready solutions while leveraging Generative AI, LLMs, and Agentic AI workflows. The ideal candidate will be a strong full-stack developer with experience in modern web technologies, cloud environments, API integrations, and AI-powered applications. Key Responsibilities Collaborate with business stakeholders to understand application goals, requirements, and AI-driven concepts. Convert AI-generated prototypes and HTML artifacts into maintainable, enterprise-grade web applications. Design and develop modern front-end applications and supporting backend services. Build and integrate APIs, enterprise systems, databases, authentication services, and AI capabilities. Develop Agentic AI workflows involving tool usage, multi-step reasoning, and external system integrations. Review and enhance AI-generated code for security, scalability, maintainability, and performance. Partner with architects, developers, security teams, data teams, and business leaders to deliver business solutions. Communicate technical concepts, architecture decisions, risks, and recommendations to both technical and non-technical stakeholders. Stay current with emerging AI technologies and recommend innovative solutions that improve business outcomes. Required Skills Must Have Strong experience developing modern web applications Proficiency in:

HTML CSS

JavaScript and/or TypeScript Experience with modern front-end frameworks Experience developing and integrating APIs and backend services Experience deploying applications in cloud/hosted environments Hands-on experience with: Generative AI Large Language Models (LLMs) AI-powered application development Understanding of Agentic AI concepts: Tool calling Multi-step workflows External system integrations Experience converting prototypes or proof-of-concepts into production applications

Knowledge of:

Authentication & Authorization Application Security Enterprise deployment practices Experience integrating enterprise APIs, databases, and systems Strong SDLC knowledge: Testing Version Control CI/CD & Deployment Excellent communication and stakeholder management skills Preferred Qualifications Hands-on experience with Claude Experience with OpenAI and other enterprise LLM platforms React, Next.js, or similar frameworks Secure enterprise application development Cloud hosting and deployment experience AI agent frameworks and orchestration tools Rapid prototyping and iterative development Strong product mindset and focus on user experience Experience working with cross-functional business and technical teams