Software Engineer, AI Platform

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Description

We're hiring a full-time Software Engineer, AI Platform to own the data platform, ETL pipelines, and agent infrastructure that everything else at the company runs on. This is the platform layer that makes Fluency's AI work reliable, observable, and usable in production. It moves data through LLMs, transforms agent outputs into structured downstream data, runs jobs reliably, and keeps the system fast, cheap, and observable as we scale. Because we're an early-stage company moving fast, we're looking for an engineer who can build the platform, keep it running, and make tradeoffs while priorities shift. This is an in-person role, 5 days a week in our office. The ability to balance reliability with iteration speed is essential. Key Responsibilities Own the data platform: Maintain and evolve the platform that powers every job across the company. Run the LLM ETL pipeline: Ingestion, transformation, enrichment, and storage of LLM-driven data. Build agent transformation infrastructure: The systems that take agent outputs and turn them into structured, queryable data downstream. Improve reliability, throughput, and cost of LLM-driven jobs in production. Build observability and tooling so the team can debug and iterate quickly. Partner with AI Engineers: Expose new capabilities through the platform and shape the interfaces they build on. Operate the system: Participate in on-call rotation and incident response. What We Are Looking For Strong Python engineering experience supporting production systems (FastAPI or similar) Experience building or maintaining production pipelines that handle non-trivial volume, retries, backfills, and failure recovery Hands-on experience with a data orchestrator (Dagster, Airflow, Prefect, or Temporal) and dbt or similar transformation tooling Comfort with PostgreSQL at scale: schema design, multi-schema setups, and migrations Comfort with AWS infrastructure (ECS, Lambda, SQS, Step Functions, RDS, S3) and IaC (Terraform / Terragrunt) Familiarity w

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