AWS Data Engineer

ON.energy is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers. Role Summary ON.energy is building the power infrastructure that makes the AI era possible. Our systems are deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. You’ll be the fourth engineer on a growing data team, helping scale our AWS-based data lakehouse and working primarily with industrial data sources and high-volume time-series data. No prior experience in the energy sector is required, we’ll support you in learning the domain. Key Responsibilities - Build and maintain scalable ETL/ELT pipelines for batch and real-time processing, including high-frequency time-series ingestion. - Evolve the Data Lakehouse — optimizing storage, performance, cost, and data consistency. - Manage orchestration workflows with complex dependencies and error handling. - Deliver production-ready, analytics-optimized datasets, engaging directly with end users to understand how they consume data. - Implement data governance, security controls, and audit policies across the AWS ecosystem. - Build monitoring, alerting, and data quality testing for platform reliability. Key Requirements - Bachelor’s degree in Computer Science, Computer Engineering, or a closely related discipline. - 3+ years of hands-on Data Engineering on AWS, with real exposure to modern data lakehouse architectures. - English at B2 or above. Daily work with English-speaking teams and written documentation. - Production experience with open table formats, preferably Apache Iceberg (table design, partitioning, schema evolution). Coming from Delta Lake or Hudi? We’ll support you in transitioning. - Core AWS data services: Glue, Athena, Lambda, and S3. - Designing and maintaining ETL/ELT pipelines for batch and streaming workloads. - Python (PySpark / Python Shell) and advanced SQL (window functions, CTEs, execution plan tuning). - Data modeling for analytical workloads in a lakehouse context — medallion architectures, incremental loads, deduplication, historical backfills. - Infrastructure as Code: Terraform or CloudFormation. Preferred Experience Step Functions · Kinesis · Lake Formation · DynamoDB · custom ETL with boto3, pyiceberg, pyarrow · CI/CD for Glue or Lambda · time-series and IoT/telemetry data at scale #LI-AD1 For US-based roles - What you’ll get: - Competitive salary + annual performance-based bonus eligibility - Medical, dental, and vision insurance - 401(k) with company match - Paid time off and company holidays For Mexico-based roles - What you’ll get: - Competitive salary + annual performance bonus eligibility - Christmas Bonus (Aguinaldo): 30 days - Major medical expenses and life insurance - Paid time off and holidays (per local policy) For all roles: - Professional development and growth opportunities - Opportunity to grow with a mission-driven team shaping the future of clean energy - Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation. - Benefits vary by role and location and are subject to change. Agency Notice: ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.