Software Engineer - Data Flywheel

perplexityLondon, UK, United Kingdom$210k – $385k+ Equity1w ago

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Requirements

Software engineering experience shipping production systems: Minimum of 3+ years.
Strong proficiency in Python and SQL with the ability to write maintainable code for production use.
Experience with big data systems including distributed compute (e.g., Hadoop, Spark) and large-scale storage solutions like Amazon S3 or Google Cloud Storage.
Solid fundamentals in data modeling, system design, debugging of distributed systems, monitoring tools such as Prometheus/Grafana, lineage tracking with Apache Atlas or similar technologies, and implementing quality checks for downstream consumers' reliance on the results (e.g., using TensorFlow Extended).
Experience working within AWS ecosystems like Databricks or utilizing other lakehouse tools such as Delta Lake to manage data pipelines effectively.
Familiarity with agentic coding workflows and AI-assisted development tools for faster iteration (e.g., GitHub Copilot, Tabnine).
Data engineering background including experience in building, orchestrating, and managing data warehousing solutions using technologies like Apache Airflow or Prefect.
Experience with LLM/VLM interfaces such as the Hugging Face Transformers library for tokenization and structured formats (e.g., TensorFlow Datasets).
Familiarity with multimodal payloads, which may involve experience working with audio, video, or other non-textual data inputs in conjunction with LLMs/VLMs.
Experience supporting customer-facing products at scale (e.g., deploying microservices on Kubernetes).

Build the systems and pipelines that enable Search, Product, and other teams to independently access and utilize reliable eval verdicts without bottlenecks.
Take ownership of the "evals-to-product" loop, autonomously determining the best way to turn raw signals into durable datasets that power decision-making across the company.
Build a robust simulator pipeline capable of replaying user interactions with the product in formats legible to LLMs and VLMs, reflecting product changes as they are shipped.
Maintain data trust by implementing monitoring, lineage, and quality checks, ensuring downstream consumers can rely on the results implicitly.
Operate in a small, high-impact team where your work directly shapes how Perplexity measures and improves Answer Quality.

$210K – $385K • Offers Equity
Full-time U.S. employees enjoy a comprehensive benefits program including equity, health, dental, vision, retirement, fitness, commuter and dependent care accounts, and more.
Full-time employees outside the U.S. enjoy a comprehensive benefits program tailored to their region of residence.
USD salary ranges apply only to U.S.-based positions. International salaries are set based on the local market. Final offer amounts are determined by multiple factors, including experience and expertise, and may vary from the amounts listed above.
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