Software Developer Java Backend

Nexgrid is hiring a mid-to-senior Software Developer to architect and build next-generation backend systems for advanced metering infrastructure (AMI) and smart grid deployments. You’ll work on large-scale, mission-critical Java applications that integrate AI/LLM capabilities, mobile platforms, and third-party systems’‘solving complex problems at the intersection of utility infrastructure and modern software innovation.

What You’ll Do

• Design and architect distributed Java backend services handling millions of data points and complex business logic across utility networks
• Integrate cutting-edge AI and large language models into real-world infrastructure systems
• Build scalable REST APIs and integration layers that power mobile apps and third-party ecosystem connections
• Collaborate with cross-functional teams to push the boundaries of what’s possible in smart grid technology
• Optimize and scale relational database systems to handle massive throughput and complex queries
• Drive technical decisions on emerging technologies and architectural patterns
• Write clean, maintainable code and mentor through code review
• Contribute to architecture that shapes the future of utility software

• 5+ years of professional software development experience
• Strong Java expertise (core language, OOP principles, enterprise patterns)
• Proven experience designing and optimizing relational databases at scale
• Experience building REST APIs or similar server-side interfaces
• Solid understanding of version control (Git) and CI/CD practices
• Bachelor’s degree in Computer Science, Engineering, or equivalent professional experience

Preferred Qualifications

• Mobile app development experience (iOS/Android, or mobile-accessible APIs)
• Experience integrating with AI/LLM services (OpenAI, Claude, or similar)
• Experience with distributed systems, microservices, or high-throughput architectures
• Familiarity with smart grid, IoT, or utility software domains
• SQL optimization and database performance tuning