Senior Platform Engineer - AI-Powered Infra (Remote)

Cello; United States; Remote; USD 120,000 - 190,000; Full time

Job summary

Cello is a US-based, remote-first AI infrastructure company building APIs, attribution models, MCP integration, and AI-based recommendations for SaaS products. Engineers work across frontend widgets, backend infrastructure, and data pipelines in a fast-paced, no-wall environment.

The team ships code against modern stacks (NestJS, PostgreSQL, Terraform) and focuses on scalable, reliable systems while embracing the latest AI innovations.

Qualifications

• Experience building systems at real scale: high traffic, large user base, high availability
• Deep AWS expertise across compute, messaging, storage, networking, and observability
• Strong experience with Infrastructure as Code (Terraform or similar)
• Solid distributed systems thinking: ordering guarantees, idempotency, retries, at-least-once delivery, partial failure recovery
• Experience running PostgreSQL in production - configuration, connection pooling, migrations, performance, backup and restore
• Enough application-layer literacy to read TypeScript/Node.js (NestJS) code
• You know when \"good enough\" is right - and when to invest in quality
• You are a strong problem solver - you can break down complex, ambiguous problems and ship pragmatic solutions
• You contribute ideas and challenge assumptions, not just execute
• You’re genuinely curious about the product itself - you want to understand what we’re building and why
• You live at the bleeding edge of agentic coding. Claude Code, Cursor, multi-agent setups, MCP servers, whatever ships next, you’re using it
• That said, you know how code and systems actually work. You can debug, reason about architecture, and carry your weight in a codebase without an AI assistant
• Strong work ethic - you take ownership, ship what you commit to, and don’t need to be chased

Responsibilities

• Manage AWS infrastructure - architecture, reliability, security, and cost
• Design and maintain CI/CD pipelines that let engineers ship confidently and fast
• Collaborate with stakeholders—no walls, no ticket factory
• Decide where to lean, balancing speed and foundation
• Real influence on architecture and product direction, not just coding tickets
• Help us adopt the latest AI improvements to speed up how we build and ship

Skills

Communication skills

Scale systems

AWS expertise

Infrastructure as Code

Distributed systems thinking

PostgreSQL production

TypeScript/Node.js literacy

Quality mindset

Problem solving

Generating ideas

Curiosity about product

Agentic coding

Code/system understanding

Ownership

Tools

Terraform

OpenTelemetry

SQS

Kafka

Job description

Cello is a US-based, remote-first AI infrastructure company building APIs, attribution models, MCP integration, and AI-based recommendations for SaaS products. Engineers work across frontend widgets, backend infrastructure, and data pipelines in a fast-paced, no-wall environment.

The team ships code against modern stacks (NestJS, PostgreSQL, Terraform) and focuses on scalable, reliable systems while embracing the latest AI innovations.