# AfterQuery - Senior Infrastructure Engineer, Applied AI at deCircle

> Onsite · United States · Senior · DevOps / SRE / Infra · open. Source: https://alderhq.app/jobs/recruitee%3Adecircletalentpartner%3A2780695 (read 2026-11-08).

## Facts (observed)

- Company: [deCircle](https://alderhq.app/companies/decircle)
- Location text: San Francisco, California, United States
- Where it can be done from (inferred): Onsite · United States (evidence: "Location: San Francisco, California, United States")
- Posted: 2026-10-12 (27 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-07
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://talent.makerdao.network/o/afterquery-senior-infrastructure-engineer-applied-ai
- Skills listed (inferred): JavaScript, Node.js, Python, Redis, Kafka, Elasticsearch, AWS, GCP, Kubernetes, Distributed systems

## Pay and sponsorship

- Posted pay: $300k–$450k per year (from the description)
- Market band for similar posted roles (SF Bay Area, n 114): p25 $189k, median $210k, p75 $230k

## Description (the employer's text)

AfterQuery: novel datasets and data infrastructure for frontier AI labs (85 people, $34M raised, SF).

Comp: $250K-$350K base (OTE $300K-$450K (bonus up to $100K)) + competitive equity. Location: On-site 5 days, FiDi SF. Visa: Visa transfers (OPT, H1B).

### Responsibilities

Design/build core shared infra for data generation, HITL systems and eval pipelines

Own foundational systems for scale and reliability

Provide platform/services to vertical eng teams

Architect distributed systems for large-scale, high-throughput workloads

Set eng best practices; mentor the junior team

Tech stack: Node.js, Python, Kubernetes, Kafka, Redis, Elasticsearch, AWS, GCP

Source: https://www.paraform.com/share/afterquery/cmox601tw00110dlkapdfla2j

### Requirements

6-10 yrs platform infrastructure with full-stack capability

Scalable, reliable, high-throughput systems track record

Node.js, Python, Kubernetes, Kafka, Redis, Elasticsearch, AWS/GCP

Mentoring; HITL data or high-growth startup a plus

On-site 5 days FiDi SF

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/recruitee%3Adecircletalentpartner%3A2780695 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.