Full Stack Agentic Developer
Charles River Associates3 months ago
Base Salary
$160k - $230k/yr
Responsibilities
- Build and evolve React product surfaces for authentication, session setup, workspace navigation, file review, streaming agent activity, results review, and administration.
- Develop reusable components and Express/TypeScript APIs supporting session orchestration, file management, workspaces, usage tracking, and product capabilities.
- Implement real-time server-sent event experiences that render agent output, tool activity, plans, progress, costs, file changes, warnings, and workflow states.
- Manage streaming lifecycle, retries, cancellation, cooperative stop, resumption, error recovery, and user feedback for long-running workflows.
- Improve the custom multi-turn agent runtime, including model-provider messaging, streaming response parsing, tool execution, result observation, and iteration in isolated containers.
- Develop proprietary tools, schemas, permission boundaries, workspace access patterns, validation, and reusable tool-extension patterns.
- Integrate OpenAI, Anthropic, and other model providers while maintaining prompt, context, token, usage, caching, summarization, and model-selection systems.
- Own session, file, and workspace lifecycles including uploads, previews, downloads, remote execution, interruption, resumption, review, cleanup, and teardown.
- Implement enterprise security, authentication, authorization, privacy, reliability, structured logging, tracing, transcript capture, metrics, tests, and debugging tools.
- Collaborate with product, domain, backend, infrastructure, and security stakeholders while contributing technical notes, estimates, sprint planning, and development improvements.
Requirements
- Bachelor’s degree in Software Engineering, Engineering, or another relevant discipline with programming or technology experience; an advanced degree is desirable.
- 6+ years of professional software engineering experience with hands-on ownership across frontend, backend, and production product systems.
- Strong TypeScript experience across React frontend development and Node.js/Express API development.
- Experience building complex component-driven React applications with interconnected views, real-time updates, and robust error handling.
- Experience with server-sent events, WebSockets, streaming APIs, or similar event-driven interfaces.
- Experience building LLM-powered agentic systems with tools, multi-turn workflows, state management, and error recovery.
- Experience with LLM tool or function calling, tool schema design, streaming tool input/output, and provider-specific implementations.
- Strong prompt engineering skills for structured, multi-step workflows involving policies, methodology, roles, and tool usage.
- Comfort working in Python for agent tools, data processing, automation, evaluation, and analytical-library integrations.
- Understanding of browser authentication, JWT lifecycle, token refresh, CORS, secure cookies, role-based access, and frontend/backend security boundaries.
- Familiarity with PostgreSQL, schema design, queries, migrations, and data access patterns.
- Experience with Docker or Linux-based execution environments, isolation, filesystem access, dependency management, and runtime troubleshooting.
- Preferred experience includes custom agent frameworks and runtimes, orchestration loops, tool-extension systems, evaluation harnesses, OpenAI and Anthropic APIs, file-heavy applications, rich incremental React content, sandboxed compute, Azure services, Docker, GitHub Actions, cloud observability, headless browser automation, document generation, data analysis, visualization, file conversion, R, LaTeX, and workflow automation.
- Familiarity with responsible AI, model evaluation, transcript review, quality controls, AI governance, and enterprise AI adoption is preferred.
Benefits
- 100 hours of training annually through formal and informal programs, including technical training, presentation skills, internal seminars, mentoring, and performance coaching.
- Comprehensive benefits package including medical, dental, vision, 401(k) with employer match, life and disability insurance, paid time off, paid parental leave, wellness programs, employee assistance resources, and commuter benefits.
- In-house immigration support for foreign nationals and international business travelers.
- Typically works in the office 3 to 4 days per week, with possible travel to another CRA office or client meetings; specific days are coordinated with the practice or team.
Tech Stack
Categories
About Charles River Associates
Charles River Associates provides economic, financial, and management consulting to corporations, law firms, and government agencies, with deep practices in antitrust, life sciences, energy, and forensic services. The firm sells fee-based expert analysis and testimony in litigation and regulatory matters and advises on strategy and valuation. Founded in 1965 and headquartered in Boston, it is a public company listed on NASDAQ with offices across North America, Europe, and Asia.