Senior Platform Infra Engineer - Scale Core Data Pipelines

davidjoseph-co; San Francisco (CA); On-site; USD 250,000 - 350,000; Full time

Benefits offered by this job

Competitive equity

Job summary

AfterQuery is seeking a Senior Software Engineer, Infrastructure/Platform to design and build the core infrastructure powering data generation, evaluation, and agentic systems. The role offers broad ownership and direct collaboration with the founding team in a highly technical environment.

You will architect and develop shared infrastructure, build scalable systems for large datasets, and create reusable APIs for engineers and researchers to move quickly and reliably.

Qualifications

• 5+ years building and owning production distributed systems.
• Strong backend proficiency in Python and/or JavaScript (Node.js/Next.js).
• Cloud infrastructure experience in GCP or AWS.
• Message queues and event‑driven systems (Kafka, RabbitMQ, Pub/Sub).
• High‑throughput data pipelines and asynchronous processing.
• System scalability, performance, and reliability ownership.
• Shared infrastructure, APIs, and internal platform development.
• Observability, monitoring, and fault tolerance design.
• Long‑term architecture ownership across data pipelines, compute and storage.
• Cross‑functional collaboration with engineering and research teams.

Responsibilities

• Architect and develop the shared infrastructure powering data generation platforms, human-in-the-loop systems, and evaluation pipelines
• Build systems capable of processing large-scale datasets and high-throughput workloads with strong reliability guarantees
• Create reusable infrastructure and APIs that let product engineers and researchers build quickly and reliably on top of core systems
• Design systems with strong observability, monitoring, and fault tolerance for production workloads at scale
• Help define long‑term system architecture across data pipelines, compute infrastructure, task orchestration, and storage systems
• Work closely with engineers and researchers to support new AI experimentation workflows and platform capabilities
• Define standards for system design, deployment, reliability, and infrastructure operations

Skills

Distributed systems

Backend development

Cloud experience

Data pipelines

Observability

APIs

Cross-functional collaboration

Architecture ownership

Education

Undergraduate degree

Tools

Kafka

RabbitMQ

Pub/Sub

GCP

AWS

Job description

AfterQuery is seeking a Senior Software Engineer, Infrastructure/Platform to design and build the core infrastructure powering data generation, evaluation, and agentic systems. The role offers broad ownership and direct collaboration with the founding team in a highly technical environment.

You will architect and develop shared infrastructure, build scalable systems for large datasets, and create reusable APIs for engineers and researchers to move quickly and reliably.