Senior Java API Engineer (contract)

Mindgrub Technologies is an award-winning agency whose mission is to drive efficiency, growth, and ROI through AI and digital innovation. We leverage a deep understanding of technology and growth strategy to deliver multi-channel solutions for enterprise clients, with a focus on the energy and utilities sectors.

We are seeking a Senior Java API Engineer to support and enhance a REST-based API platform that powers native iOS and Android mobile applications. This role focuses on maintaining and improving backend services built using Java and the Micronaut framework within an Azure-hosted environment while collaborating closely with cross-functional engineering teams. Successful candidates will demonstrate solid backend engineering skills, sound technical judgment, and the ability to work independently in a fast-paced consulting environment. This position plays a critical role in ensuring the reliability, scalability, and continued evolution of client-facing mobile application services. 

• →Maintain and enhance Java-based REST APIs that support native mobile applications across iOS and Android platforms
• →Develop new backend features and integrations while ensuring system reliability, scalability, and performance
• →Troubleshoot and resolve production issues across application, API, and infrastructure layers
• →Collaborate with mobile developers, QA engineers, project managers, and client stakeholders to deliver technical solutions aligned with business requirements
• →Participate in architecture and technical design discussions related to backend services and API development
• →Monitor application health, identify performance bottlenecks, and implement improvements to optimize system stability
• →Develop new backend features and integrations using Java and the Micronaut framework while ensuring system reliability, scalability, and performance
• →Collaborate with client engineering teams to support integrations involving Micronaut-based backend services and enterprise middleware platforms
• →Contribute to CI/CD processes, deployment activities, and operational best practices within an Azure-hosted environment
• →Participate in on-call support rotations and assist with incident response and root cause analysis as needed
• →Write clean, maintainable, and well-documented code following established engineering standards and best practices
• →Conduct code reviews and provide technical mentorship to other developers on the team
• →Collaborate with client engineering teams to support integrations involving custom middleware platforms and backend services
• →Stay informed on emerging backend engineering trends, security practices, and API development standards

• Must be a U.S. citizen and currently based in the United States, and authorized to work in the U.S. without sponsorship
• Ideal working hours are 11am - 8pm EDT (includes a one-hour lunch break), however starting between 9am - 12pm EDT will also be considered
• Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or a related technical field, or equivalent professional experience
• 5+ years of professional software engineering experience with a focus on Java backend development
• Experience developing and maintaining RESTful APIs in enterprise or production environments
• Experience working with cloud-hosted applications, preferably within Microsoft Azure environments
• Sound understanding of backend application architecture, API security, authentication, and integration patterns
• Experience troubleshooting and supporting distributed applications in production environments
• Familiarity with CI/CD pipelines, source control systems, and modern software delivery practices
• Experience collaborating with cross-functional teams in Agile or iterative development environments
• Experience working with the Micronaut framework or similar modern Java frameworks such as Spring Boot
• Must be comfortable working in environments where the use of AI-assisted coding tools may be restricted due to client security or compliance requirements
• Ability to communicate effectively with both technical and non-technical stakeholders
• Ability to work independently while managing multiple priorities in a consulting or client-services environment
• Experience supporting mobile application backend services is strongly preferred
• Experience mentoring developers and participating in technical design discussions is preferred
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