Data Analyst
globalthoughtfocus
Responsibilities:
- Build, optimize, and operate production Apache Spark pipelines that generate attributed conversion and optimization feeds from large-scale impression and conversion data.
- Design and evolve data processing and models across modern data lake and warehouse technologies, orchestrated with a production workflow scheduler on AWS.
- Build and operate partner optimization feeds and integrations with external partners, including schemas, identity fields and unique IDs, file delivery, reconciliation, and SLAs.
- Build, change, and operate production REST APIs, including PHP APIs, delivering secure, backward-compatible changes end to end (implementation, validation, authorization, data access, documentation, automated testing, and production diagnostics).
- Trace and modify behavior across controllers, database queries, templates, JavaScript, and automated tests.
- Diagnose production failures, reconcile partner-facing data, execute backfills, and manage staged releases and rollbacks.
- Write and maintain unit and integration tests across pipelines, APIs, and feeds.
- 7+ years of professional software or data engineering experience.
- 4+ years building, optimizing, and maintaining production Apache Spark pipelines, with strong Java and Python skills across JVM Spark and PySpark.
- Advanced SQL, relational data modeling, and large-scale data processing experience, including production work with Snowflake, MySQL, and Iceberg.
- 3+ years operating AWS data workloads using S3 and Airflow (or equivalent production workflow orchestration); container orchestration and data-catalog experience a plus.
- 3+ years building, changing, and operating production REST APIs, including PHP APIs built with Symfony or a closely equivalent PHP MVC framework.
- Demonstrated proficiency using AI development tools to deliver production-quality work efficiently - including AI-assisted coding, code review, documentation, and investigation, working with agentic code harnesses, and spec-based (spec-driven) AI development - with the judgment to know when to rely on AI output and when not to.
- Ability to independently deliver secure, backward-compatible API changes, including implementation, validation, authorization, data access, documentation, automated testing, and production diagnostics.
- Experience implementing external provider or client integrations involving schemas, APIs, file delivery, identity fields, reconciliation, privacy-sensitive data, and SLAs.
- Production full-stack experience with PHP, Symfony (or a comparable framework), Doctrine, Twig (or another server-rendered template system), and JavaScript.
- Ability to trace and modify behavior across controllers, database queries, templates, JavaScript, and automated tests.
- Experience writing unit and integration tests for data pipelines, APIs, and web applications.
- Ability to diagnose production failures, reconcile data, execute backfills, manage staged releases and rollbacks, and support delivery commitments.
- Hands-on experience building and running big data systems, with a focus on performance, reliability, and data quality.
- Experience in ad tech or advertising measurement, such as attribution, conversions, audience and impression data, identity matching, or partner optimization feeds.
- Ability to ramp quickly and deliver with minimal onboarding in an existing, complex codebase.
- Direct experience building partner optimization or advertising feeds with external platforms (DSPs, publishers, or measurement partners).
- Experience with deterministic and probabilistic identity matching - unique IDs, device IDs, IP-based matching, and identity graphs.
- Familiarity with edge/log delivery infrastructure and pixel/impression tracking.
- Experience with data lake table formats and query engines at large scale.
- Experience with privacy and compliance-driven data workflows (deletion, opt-out, suppression, data retention).
- Comfort operating in uncharted territory - turning ambiguity into production systems without a detailed guide.
Vacancy posted 2 days ago
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