Posh
Senior Software Engineer, Backend (AI)
New York City · Senior
Sponsorship not specifiedDetected 130 days ago
TypeScriptPythonJavaNode.jsBackend DevelopmentFull-Stack DevelopmentAWSGCPAzureCloud PlatformsTerraformMachine LearningData EngineeringLLMsMLOpsLangGraph
About the role
- This is a backend systems and infrastructure role.
Responsibilities
- Design and Scale Backend Services: Build and maintain scalable backend services and APIs that power AI-driven features, writing production code primarily in Java, and Python.
- Own Cloud Infrastructure: Define, deploy, and manage AI infrastructure using Terraform on a major cloud platform (AWS). Scale container-based solutions while ensuring reliability and performance.
- Build Evaluation Pipelines: Create robust frameworks to evaluate AI system quality and continuously improve model performance.
- Optimize for Cost, Latency, and Performance: Make pragmatic, business-aware decisions about the tradeoffs between model quality, response time, and infrastructure cost when working with managed AI services.
- Integrate Across the Stack: Collaborate with core engineering by occasionally working in TypeScript (Node.js) to connect AI features into Posh's main application.
- Support Agent Architecture: Build the backend systems and data flows that power our multi-step, autonomous AI workflows, ensuring they are reliable, observable, and scalable.
- Familiarity with agentic frameworks (LangGraph, CrewAI, Strands) or multi-agent system design.
- Build and maintain scalable backend services and APIs that power AI-driven features, writing production code primarily in Java, and Python.
- Collaborate with core engineering by occasionally working in TypeScript (Node.js) to connect AI features into Posh's main application.
- Posh enables anyone to build an IRL community based on shared interests, while connecting consumers with the communities of people just like them.
Requirements
- 3 to 6+ years of backend or full-stack engineering experience, with a track record of shipping high-quality, scalable systems in fast-paced environments.
- Deep expertise in Python and its ecosystem for web services and data processing.
- Strong experience with Infrastructure as Code (Terraform), a major cloud platform (GCP, AWS, or Azure), and deploying containerized applications.
- Comfort operating in a 0→1 environment where you'll help define new patterns and practices for AI-native product development.
- Experience with managed AI services (Vertex AI, AWS Bedrock, etc.), working with LLMs in production, or building evaluation frameworks (RAGAs, LangSmith, DeepEval).
- Background in MLOps, data engineering, or experience at consumer, marketplace, or event-driven platforms.
Skills
- Scale container-based solutions while ensuring reliability and performance.
Compensation
- This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.
Benefits
- We are all social creatures, but the dominant "social" companies today have evolved into digital loneliness machines, driving isolation, anxiety, and mental health challenges around the world.
- Please let us know if you need assistance or accommodation due to a disability
Company info
- At Posh, we're not building infrastructure for others.
This listing is sourced directly from Posh's careers page and normalized into a canonical job model.