Senior Infrastructure Engineer — AI-Forward Platform

Cogent; New York, San Francisco (NY, CA); On-site; USD 100,000 - 300,000; Full time

Job summary

Cogent is hiring a Senior+ Infrastructure Engineer to build a secure, reliable, cost-effective foundation for running Cogent's products and services. You’ll join a small Core Platform pod and work hands-on across our data platform, security systems, and platform layer used by our agents to build and ship the product.

This is an early-stage, high-ownership role for an engineer who can operate across many stakeholders and has built core infrastructure at startup scale.

Qualifications

• 5-7 years of software engineering with deep core infrastructure expertise.
• Hands-on AWS experience.
• Experience with Clickhouse Cloud at the serving layer.
• Real depth in Spark and micro-batching.
• Track record driving large-scale projects across stakeholders.
• Experience building in an AI-forward capacity with agentic coding fundamentals.
• Startup or early-stage background (up to ~200 people).

Responsibilities

• Build and optimize our data platform, focusing on storage-level optimizations for Clickhouse and Postgres.
• Make our product deployable on-prem to onboard large customers and land seven-figure accounts.
• Harden our security systems.
• Build an agent-first infra and platform layer for the product and its agents.
• Drive large-scale infrastructure projects end-to-end across multiple stakeholders.

Skills

5-7 years experience

AWS hands-on

Clickhouse Cloud

Spark

Agentic coding

Startup background

Tools

Clickhouse Cloud

Spark

Envoy/Istio

Hashicorp Vault

Job description

Cogent is hiring a Senior+ Infrastructure Engineer to build a secure, reliable, cost-effective foundation for running Cogent's products and services. You’ll join a small Core Platform pod and work hands-on across our data platform, security systems, and platform layer used by our agents to build and ship the product.

This is an early-stage, high-ownership role for an engineer who can operate across many stakeholders and has built core infrastructure at startup scale.