Full Stack Developer

2 weeks ago

Washington, DC, United States ASCENDING LLC Full time

Full-Stack Developer (AI Integration)
Direct Hire
Washington DC - Hybrid role (2-3 days onsite)

About the Role
Our client is expanding their AI offerings and needs a full - stack developer who can design, build, and integrate AI components into customers' existing platforms. You'll work across the stack-C#/.NET services, modern JavaScript front ends, and data integrations-while delivering production - grade AI features, including customized, agentic AI workflows that call tools, route tasks, and operate safely at scale.

What You'll Do

  • Design, build, and integrate AI features into customer platforms (web apps, CRMs, ERPs, support systems, custom tools)
  • Develop and maintain C#/.NET APIs and services that orchestrate LLMs, tools, and data sources
  • Implement agentic AI patterns (tool/function calling, routing/planning, memory, multi - step workflows) for real business use cases
  • Build front-end experiences in React and/or Angular for prompt UIs, chat/agent consoles, and admin tooling
  • Ship robust data integrations (REST/GraphQL/webhooks), including ETL/ELT for RAG pipelines and system-to-system sync
  • Implement secure authentication/authorization, audit trails, rate limiting, cost controls, and observability
  • Produce clear documentation, deployment guides, and client - facing enablement; partner with delivery and customer teams

Required Qualifications
  • Professional full - stack experience building production systems with C#/.NET (5+ years preferred)
  • Recent, paid professional experience delivering agentic AI solutions (not side projects), e.g.:
    • Tool/function calling, orchestration, task planning, retries, grounding, and memory
    • Integrations with LLM APIs (e.g., Azure OpenAI/OpenAI/Anthropic/Vertex) in production
  • Hands-on front-end development with modern JS libraries (React and/or Angular)
  • Strong API design/integration background (REST/GraphQL, webhooks, OAuth/OIDC)
  • Data integration experience: building pipelines, transforming/normalizing data, and connecting heterogeneous systems
  • Experience building customized AI agents tailored to business workflows and integrating them into existing apps
  • Solid software engineering practices: testing, CI/CD, versioning, code reviews, secure coding, documentation

Nice to Have
  • Python development experience (for AI tooling, data pipelines, or SDKs)
  • Understanding of AI models and tradeoffs (context length, token costs, latency, safety, evals)
  • Experience with AI frameworks and components: Semantic Kernel, LangChain, function calling, vector search (e.g., Azure AI Search, Pinecone, Redis, pgvector)
  • RAG patterns (indexing, chunking, embeddings, metadata), prompt engineering, evaluation frameworks
  • Cloud experience (Azure preferred; AWS/GCP welcome), containers (Docker), and basic DevOps
ll qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.

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