Senior AI‑First Fullstack Architect for Agentic Systems

Poland and Eastern Europe; United States; Remote; USD 137,017 - 216,943; Full time

Job summary

Xebia is seeking a Principal Fullstack Architect (AI & Agentic Systems) to lead design and delivery of an AI-native underwriting platform. You will drive architectural decisions, mentor engineers, and work hands-on to scale MVP into production-grade software.

You will collaborate with backend Python, frontend React/TypeScript, and AI tooling, shape standards, and ensure security, observability, and scalability across fast-moving sprints.

Qualifications

• Experience designing scalable, enterprise-grade software.
• Proven ability to lead technical initiatives.
• Hands-on in software development with leadership.

Responsibilities

• Design, develop, and maintain core backend services using Python.
• Contribute to the architecture and technical direction of an AI-native underwriting platform.
• Act as a technical lead for AI-assisted software development within the engineering team.
• Build scalable, secure, observable, and production-ready software solutions.
• Collaborate with frontend engineers on integrations with React and TypeScript applications.
• Define and promote engineering standards, development workflows, and software quality practices.
• Leverage AI coding assistants to improve engineering velocity, code quality, and developer productivity.
• Contribute to system architecture, technical design, and platform evolution.
• Build internal engineering tooling and developer productivity solutions.
• Support technical decision-making while remaining highly hands-on in software development.
• Collaborate closely with product, engineering, and business stakeholders in an iterative product environment.
• Mentor team members through technical leadership, code reviews, and knowledge sharing.
• Help scale the platform from MVP to a robust enterprise-grade product.

Skills

TypeScript

React

Distributed architectures

Security best practices

Observability

AI-assisted development

Software engineering fundamentals

Technical leadership

Communication

Hands-on development

Tools

LangGraph

LangChain

Claude Code

Cursor

Copilot Workspace

Job description

Xebia is seeking a Principal Fullstack Architect (AI & Agentic Systems) to lead design and delivery of an AI-native underwriting platform. You will drive architectural decisions, mentor engineers, and work hands-on to scale MVP into production-grade software.

You will collaborate with backend Python, frontend React/TypeScript, and AI tooling, shape standards, and ensure security, observability, and scalability across fast-moving sprints.