Software Engineer – DER & OEM

Note: Need someone with previous Solar or Energy or Car company who has DER and OEM experience.

Duties

• Seeking a Software Engineer to develop and maintain integrations with distributed energy resource (DER) manufacturers and technology providers.
• This role will build reliable, scalable, cloud-based software that connects to OEM APIs and collects, processes, validates, and monitors telemetry from batteries, solar systems, inverters, and other energy devices.
• The ideal candidate combines strong Java software engineering, API integration, event-driven architecture, and Azure cloud experience with practical knowledge of electrical power systems and DER technologies.

Key Responsibilities

• Design, develop, test, and maintain Java and Spring Boot services that integrate with OEM APIs for batteries, solar systems, inverters, meters, gateways, and related DER equipment.
• Collect and process telemetry such as power, energy, state of charge, voltage, current, operating status, alarms, and device connectivity.
• Normalize data from different OEMs into a consistent internal telemetry model.
• Design and maintain RESTful APIs and services for exchanging data with OEM platforms and internal systems.
• Handle API rate limits, pagination, retries, timeouts, token refresh, backfills, and intermittent OEM availability.
• Develop automated data-quality checks to identify missing, delayed, stale, duplicated, or invalid telemetry.
• Investigate discrepancies between OEM portals, APIs, meters, and internal systems.
• Understand and correctly interpret power flow across solar, battery, grid, load, and inverter components.
• Account for differences between AC-coupled and DC-coupled systems when interpreting device telemetry.
• Deploy, operate, and troubleshoot containerized applications using Docker and Kubernetes in Azure cloud environments.
• Build monitoring, logging, alerting, and operational dashboards for OEM integrations and telemetry-processing services.
• Use GitHub for source control, pull requests, code reviews, automated testing, and CI/CD workflows.
• Apply software engineering best practices, including object-oriented design, unit and integration testing, secure coding, and maintainable application architecture.

Required Qualifications

• Professional software development experience using Java and Spring Boot.
• Experience designing, developing, and integrating RESTful APIs and distributed services.
• Experience with event-streaming or messaging technologies such as Apache Kafka and Azure Event Hubs.
• Experience developing and deploying applications in Microsoft Azure.
• Hands-on experience with containerization and orchestration using Docker and Kubernetes.
• Experience using GitHub or similar Git-based platforms for source control, collaboration, and CI/CD.
• Knowledge of microservices, event-driven architectures, asynchronous processing, and distributed-system design principles.
• Experience with automated testing, application monitoring, logging, and production troubleshooting.
• Effective written and verbal communication skills, including the ability to document technical systems and collaborate across teams.
• Experienced in coding using AI agents such as Claude, Cursor or Codex.

Preferred Qualifications

• Experience integrating with OEM, IoT, energy-management, or device-telemetry platforms.
• Knowledge of distributed energy resources, including batteries, solar systems, inverters, meters, and gateways.
• Familiarity with Azure services used for application hosting, messaging, monitoring, security, and data processing.
• Experience with infrastructure automation, observability platforms, and cloud-native CI/CD practices.