Senior Backend Infrastructure Specialist

1 week ago

Hagonoy, Central Luzon, Philippines beBeeBackendDeveloper Full time $160,000 - $200,000
Job Summary

We're building a platform of autonomous AI agents for data collection, labeling, and intelligent analysis. We're looking for a Senior Backend Engineer to power this system.

You will architect and implement core services that interface with LangGraph-based workflows, manage data access from structured and unstructured sources, and support seamless orchestration between our AI layers and data infrastructure.

Detailed Responsibilities
  • Develop performant, production-grade backend APIs and services using AWS Lambda, EC2, and RDS.
  • Integrate structured and unstructured data access layers with LangGraph and LangSmith agents.
  • Architect retrieval pipelines using vector databases to enable semantic search for AI agents.
  • Coordinate with data engineers to support RAG workflows across a shared data lake.
  • Develop and maintain task routing, memory management, and agent orchestration logic.
  • Contribute to platform-level observability, metrics, logging, and diagnostics for agentic tasks.
Requirements
  • 4+ years of backend development experience, with strong programming skills (Python, Node.js).
  • Deep experience with serverless architectures, microservices, and AWS (Lambda, EC2, RDS).
  • Familiarity with LangGraph, LangChain, or equivalent AI orchestration frameworks.
  • Working knowledge of vector databases (Chroma, Pinecone) and semantic search.
  • Solid database and API design expertise, particularly with PostgreSQL.
  • Experience building scalable, low-latency backend systems for AI or data platforms.
About the Role

ActiveFence is a leading provider of security and safety solutions for online experiences. We safeguard more than 3 billion users, top foundation models, and the world's largest enterprises and tech platforms every day.

As a trusted ally to major technology firms and Fortune 500 brands that build user-generated and GenAI products, ActiveFence empowers security, AI, and policy teams with low-latency Real-Time Guardrails and a continuous Red Teaming program that pressure-tests systems with adversarial prompts and emerging threat techniques. Powered by deep threat intelligence, unmatched harmful-content detection, and coverage of 117+ languages, ActiveFence enables organizations to deliver engaging and trustworthy experiences at global scale while operating safely and responsibly across all threat landscapes.

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