ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already 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. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.
We are looking for a highly hands-on and self-driven Senior Data Engineer to join our team. You will work alongside 2 Data Engineers and 1 Data Analyst, playing a critical role in elevating the technical quality of our processes and scaling our AWS-based data infrastructure.
Requirements (5–8+ years of experience)- AWS Expertise: Deep experience with services such as Glue, Athena, Step Functions, Lambda, and Kinesis
- Modern Table Formats: Hands-on experience with Apache Iceberg (required)
- Programming & Data: Advanced proficiency in Python (PySpark / Python Shell) and SQL (window functions, CTEs, performance tuning)
- Data Engineering Practices: Strong experience with ETL/ELT tools and data modeling (Dimensional/Kimball)
- Reporting Enablement: Experience preparing data for BI tools and operational reporting
- Databases: Experience with both NoSQL (e.g., DynamoDB) and relational databases
- Infrastructure as Code: Experience with Terraform or AWS CloudFormation
- Autonomy: Proven ability to deliver and troubleshoot complex data systems independently
- Bachelor’s degree in Computer Science, Engineering, Information Systems, or a related technical field from an accredited university in LATAM (e.g., Argentina, Chile, México, or equivalent) is required
Soft Skills
- Strong ownership mindset with the ability to work independently and drive outcomes
- Pragmatic decision-maker, balancing technical excellence with cost and efficiency
- Excellent problem-solving and analytical skills
- Clear communicator, able to translate business needs into technical solutions
- Collaborative team player who can mentor and influence without authority
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.
- Accommodations: If you need an accommodation during the application process, email [email protected]
- Benefits vary by role and location and are subject to change.
Top Skills
What We Do
ON.energy is building the backbone of energy and AI infrastructure, powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets. Its track record spans industrial, manufacturing, infrastructure, transportation, and grid-scale storage. With patented technology and proprietary software, ON.energy develops projects worldwide that set new benchmarks for resilience.
