Hologram is hiring a Data Engineer III

Aquia Inc., supporting onX, is hiring a Data Engineer III to build the next-generation data foundation powering growth. You'll design, build, and scale the lakehouse architecture that underpins analytics, machine learning, and AI. Your work will modernize the data ecosystem, making it discoverable, reliable, governed, and ready for self-service and intelligent automation.

What You'll Do

• Design, implement, and evolve the Iceberg-based lakehouse architecture to balance scalability, cost, and performance.
• Establish data layer standards (Raw, Curated, Certified) that drive consistency, traceability, and reusability across domains.
• Define and implement metadata-first and semantic layer architectures making data understandable, trusted, and ready for self-service analytics.
• Partner with BI and business stakeholders to ensure domain models and certified metrics are clearly defined and aligned to business language.
• Build and maintain scalable, reliable ingestion and transformation pipelines using GCP tools (Spark, Dataflow, Pub/Sub, BigQuery, Dataplex, Cloud Composer).
• Develop batch and streaming frameworks with schema enforcement, partitioning, and lineage capture.
• Use configuration-driven, reusable frameworks to scale ingestion, curation, and publishing across domains.
• Apply data quality checks and contracts at every layer to ensure consistency, auditability, and trust.
• Collaborate with Data Science to integrate feature stores, model registries, and model monitoring into the platform.
• Build and maintain standardized orchestration and observability patterns for both data and ML pipelines, ensuring SLA, latency, and cost visibility.
• Develop reusable microservices that support model training, deployment, and scoring within a governed, observable MLOps framework.
• Implement self-healing patterns to minimize MTTR and ensure production reliability.
• Automate governance via metadata-driven access controls (row/column permissions, sensitivity tagging, lineage tracking).
• Define and maintain the semantic layer that bridges the technical data platform and business self-service, enabling analysts and AI systems to explore data confidently.
• Use GCP Dataplex as the unifying layer for data discovery, lineage, and access management, serving as the first step in evolving our metadata fabric.
• Extend metadata models so datasets, pipelines, and models become interconnected, explainable, and machine-readable.
• Champion the use of metadata and semantics as the control plane for quality, cost, and performance, empowering teams to self-serve trusted data.
• Partner with BI, Product, and Marketing to align on key business metrics, certified definitions, and self-service models.
• Work closely with infrastructure and security teams to embed privacy, cost management, and compliance into every layer of the stack.
• Mentor peers by documenting patterns, reviewing code, and promoting best practices.
• Participate in KTLO (Keep the Lights On) to ensure stability as modernization continues.

What We're Looking For

• Bachelor’s degree in Computer Science or equivalent work experience.
• Five (5) or more years of professional software development experience focused on web client development.
• Permanent US work authorization is a condition of employment.
• Deep experience designing and building pipelines using GCP (Spark, Dataflow, Pub/Sub, BigQuery, Composer, Dataplex, Cloud Storage).
• Strong programming skills in Python and SQL.
• Expertise in data modeling, schema evolution, and optimization for both batch and streaming systems.
• Hands-on experience with Apache Iceberg or similar table formats (Delta, Hudi).
• Knowledge of MLOps frameworks (feature store, model registry, monitoring) and integration with data pipelines.
• Experience implementing or supporting a semantic layer for governed self-service analytics.
• Familiarity with event-driven architectures and near-real-time data processing patterns.
• Understanding of data governance, quality, and compliance principles.
• Proficiency with orchestration, observability, and CI/CD practices for data workloads.
• Proven ability to design system architecture, lead cross-functional data initiatives, and mentor other engineers.
• You think in systems and reusable patterns, not one-off pipelines.
• You see metadata and semantics as strategic assets, not technical overhead.

Nice to Have

• Familiarity with Java or Scala is a plus.

Technical Stack

• GCP: Spark, Dataflow, Pub/Sub, BigQuery, Dataplex, Cloud Composer
• Languages: Python, SQL, Java, Scala
• Table Formats: Apache Iceberg, Delta, Hudi

Benefits & Compensation

• Compensation: $125,000 to $145,000 + equity: grant of common share options with a vesting schedule.
• Competitive salaries, annual bonuses, equity, and opportunities for growth.
• Comprehensive health benefits including a no-monthly-cost medical plan.
• Parental leave plan of 5 or 13 weeks fully paid.
• 401k matching at 100% for the first 3% you save and 50% from 3-5%.
• Company-wide outdoor adventures and amazing outdoor industry perks.
• Annual “Get Out, Get Active” funds to fuel your active lifestyle in and outside of the gym.
• Flexible time away package that includes PTO, STO, VTO, quiet weeks, and floating holidays.

Work Mode

This is a hybrid role based in Bozeman, Montana, United States.

At onX, we believe that unique perspectives make us stronger. By bringing together people with different experiences, ideas, and viewpoints, we fuel innovation. We are proud to be an equal opportunity employer and are committed to fairness not only in hiring, but also in development, compensation, and promotion.