About this opportunity
Three Pillars Recruiting lists this Senior Software Engineer - Backend, Data Products - MarTech/AdTech opportunity in san francisco, California. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Senior Software Engineer - Backend, Data Products
As a Senior Software Engineer on Backend, Data Products, you build the product itself - the composable, self-correcting pipeline capabilities customers actually use. You develop Reactors (the Observe / Match / Act / Compose primitives at the heart of the platform), the connectors and tooling that bring messy real-world data in, the validation that keeps it trustworthy, and the backend/GraphQL surface that exposes it. This is applied backend engineering: turning a hard product vision into resilient, shippable features.
What You’ll Do
Build and extend Reactors — the Observe / Match / Act / Compose primitives that make pipelines composable and self-correcting.
Develop connectors, ingestion, and transformation tooling for diverse, messy marketing data sources, including schema evolution.
Build data validation and quality into the pipeline (e.g., Great Expectations-style contracts) so correctness is enforced, not hoped for.
Design and ship the backend / GraphQL surface that exposes pipeline capabilities to internal teams and customers.
Orchestrate multi-step pipeline work with workflow engines (Temporal) and event-driven dispatch (NATS/JetStream).
Collaborate in a sprint-based cycle with product and science to turn analytical workloads into production features.
What Will Help You Succeed
Engineering fundamentals
5+ years writing production software, with deep Python (3.10+, async/await, type hints; pandas, SQLAlchemy, Pydantic).
Built resilient, observable ETL/ELT pipelines that ingest, transform, and validate data at scale.
API/backend design: GraphQL and/or REST contracts, versioning, and ergonomics other engineers actually enjoy using.
PostgreSQL depth - schema design, query optimization; comfortable with both ORM and raw SQL.
Systems & tooling
Event-driven and workflow-orchestrated systems (Temporal, NATS / Kafka, or similar).
Data validation / quality frameworks, and a habit of designing for correctness and debuggability.
Nice to have
Plugin / extension development (Apache NiFi or similar) and fluency with AI coding assistants as part of your workflow.
Performance-sensitive work in a systems language (Rust, C++) - graph / lineage modeling; connector ecosystems.
The Role Is Right For You If
You like turning a hard product vision into clean, composable systems others build on.
You build and ship alongside the team, and you treat pipeline correctness as a feature.
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Worksite address
san francisco, CA, 94199, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.