Web Application Developer Job at Halian | Managed Services, Recruitment Agency & Contract Sta..., Bellevue, WA

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  • Halian | Managed Services, Recruitment Agency & Contract Sta...
  • Bellevue, WA

Job Description

Salary: $90,000 - 130,000 per year Requirements:

  • Strong experience developing modern web applications.
  • Proficiency in HTML, CSS, and JavaScript and/or TypeScript.
  • Experience with modern front-end frameworks, backend services, API development and integration, and cloud or hosted application deployment.
  • Hands-on experience with Generative AI, LLMs, and AI-powered application development.
  • Understanding of Agentic AI concepts, including tool calling, multi-step workflows, and external system integrations.
  • Experience turning prototypes or proof-of-concepts into production applications.
  • Knowledge of authentication and authorization, application security, and enterprise deployment practices.
  • Experience integrating enterprise APIs, databases, and systems.
  • Strong SDLC knowledge, including testing, version control, CI/CD, and deployment.
  • Excellent communication and stakeholder management skills.
  • Preferred: hands-on experience with Claude, OpenAI, or other enterprise LLM platforms; React, Next.js, or similar frameworks; secure enterprise application development; cloud hosting and deployment; AI agent frameworks and orchestration tools; rapid prototyping and iterative development; a product mindset and focus on user experience; and experience working with cross-functional business and technical teams.
  • The posting states that the role is limited to U.S. citizens and Green Card holders and is W2 only.
Responsibilities:
  • Work with business stakeholders to understand application goals, requirements, and AI-driven concepts.
  • Turn 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 using tools, multi-step reasoning, and external system integrations.
  • Review and improve AI-generated code for security, scalability, maintainability, and performance.
  • Partner with architects, developers, security and data teams, and business leaders to deliver business solutions.
  • Explain technical concepts, architecture decisions, risks, and recommendations to technical and non-technical stakeholders.
  • Track emerging AI technologies and recommend solutions to improve business outcomes.
Technologies:
  • Agentic AI
  • AI
  • API
  • Backend
  • CI/CD
  • Cloud
  • CSS
  • JavaScript
  • LLM
  • React
  • Security
  • TypeScript
  • Web

More:

We are seeking an experienced Web Application Developer with Agentic AI expertise to join a cutting-edge team building intelligent, enterprise-grade web applications. The role focuses on transforming AI-generated prototypes and concepts into secure, scalable, production-ready solutions using Generative AI, LLMs, and Agentic AI workflows. This is a 6+ month W2 contract based 100% onsite in Bellevue, Washington.

last updated 41 week of 2026

Job Tags

Full time, Contract work

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