Senior AI Engineer (Backend-Focused)

Proxify; Ciudad de México; Presencial; MXN 1.208.563 - 1.553.867; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible withdrawal options

24 flex days off

Consistent 8-hour working days

Descripción de la vacante

Proxify is seeking a Senior AI Engineer to lead the development of next-generation autonomous systems. This backend-heavy full-stack role requires expertise in Agentic Development, mastery of the Claude ecosystem, and the ability to build AI-coding features. Candidates should be comfortable with frontend technologies like React/Vue and have an intermediate-advanced English level. Enjoy flexible work schedules, flexible pay, and opportunities at cutting-edge companies.

Formación

• Deep expertise in Agentic Development and multi-agent systems.
• Experience leveraging Claude's reasoning capabilities for complex logic.
• Hands-on experience in building scalable backend production environments.

Responsabilidades

• Design and deploy autonomous agents for Claude-based coding.
• Integrate AI reasoning into core business logic.
• Ensure safe and high-quality outputs through validation layers.

Conocimientos

Agentic Development

Claude 3/3.5 mastery

AI-coding features

API design

Intermediate-advanced English

Herramientas

React

Vue

Descripción del empleo

Talent has no borders. Proxify's mission is to connect top developers around the world with the opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast-track your independent career in the right direction.

Since our launch, Proxify's developers have successfully worked with 1200+ happy clients to build their products and growth features. 5000+ talented developers trust Proxify and its network to fulfill their dreams and objectives.

Proxify is shaped by a global network of supportive, talented developers interested in remote full-time jobs. Our Glassdoor (4.5/5) and Trustpilot (4.8/5) ratings reflect the trust developers place in us and our commitment to our members' success.

The Role

We are looking for a Senior AI Engineer to join one of our high-growth client teams to lead the development of next‑generation autonomous systems. This is a backend‑heavy full‑stack role where you will be responsible for more than just simple prompt engineering. You will be architecting Agentic Workflows—systems that can reason, use tools, and execute complex coding tasks autonomously.

The ideal candidate is a language‑agnostic engineer who is obsessed with the Claude ecosystem and has hands‑on experience building systems where AI agents interact with real‑world data and codebases. You will bridge the gap between advanced LLM capabilities and robust, scalable backend production environments.

What we are looking for

• Deep expertise in Agentic Development. You should be comfortable building multi‑agent systems, ReAct loops, and self‑correcting workflows.
• Mastery of the Claude 3/3.5 family. You understand how to leverage Claude's high reasoning capabilities and long context windows for complex logic.
• Experience building "AI‑coding" features—using LLMs to generate, refactor, and test code programmatically within an application.
• While backend‑heavy, you are comfortable building the necessary frontend components (React/Vue) to allow users to interact with AI agents seamlessly.
• Extensive experience giving LLMs "tools"—designing clean API interfaces that agents can call to perform actions in the physical or digital world.
• Intermediate‑advanced English level.

Nice‑to‑Have

• Experience with LangChain, LangGraph, or CrewAI.
• Knowledge of Vector Databases (Pinecone, Weaviate) and advanced RAG patterns.
• Familiarity with LLM Observability tools (LangSmith, Helicone) to debug agentic reasoning chains.
• Background in Software Engineering Fundamentals: You treat AI code like production code (CI/CD, Unit Testing, Version Control).

Responsibilities

• Design and deploy autonomous agents that can handle end‑to‑end tasks, specifically focusing on Claude‑based coding agents.
• Build the scalable "brains" of the application, ensuring that AI reasoning is integrated into the core business logic.
• Refine system prompts and multi‑shot examples to maximize Claude's reasoning performance.
• Implement guardrails and validation layers to ensure that agentic outputs are safe, predictable, and high‑quality.
• Work with Product and UX teams to define how "AI Agents" should feel and behave within the product interface.

What we offer

Get paid, not played

No more unreliable clients. Enjoy on‑time monthly payments with flexible withdrawal options.

Predictable project hours

Enjoy a harmonious work‑life balance with consistent 8‑hour working days with clients.

Flex days, so you can recharge

Enjoy up to 24 flex days off per year without losing pay, for full‑time positions found through Proxify.

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Compensation

Enjoy the same pay, every month with positions landed through Proxify.