> Markdown version of [/jobs/ext/4484615-software-engineer](https://www.wearedevelopers.com/jobs/ext/4484615-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - **Company:** GCX Corporation - **Location:** Petaluma, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Amazon S3, Code Review, Software Debugging, Linux, Django Web Framework, Github, Python (Programming Language), PostgreSQL, Apache Maven, MySQL, Node.Js, OAuth, Query Optimization, Openid Connect, Swagger, Software Engineering, Systems Integration, Openapi, ReactJS, Spring-boot, Backend, Build Management, Containerization, Codebase, Multiaccess Edge Computing, Restful APIs, Predix, Docker, Legacy Systems - **Published:** October 31, 2026 - **Apply:** https://www.juju.com/job/16_79d6ba36 ## About the Role * 7-15 years of software engineering experience * Must reside within a 50-mile radius of Petaluma, CA * Must be authorized to work in the United States * Strong experience building IoT or hardware-adjacent applications on Linux systems * Proficiency with: + Java (Spring Boot, REST APIs, Maven) + Python/Django + React (hooks, state management, component architecture) * Solid Linux systems experience (CLI, system-level debugging) * Experience with PostgreSQL (schema design, query optimization, migrations) and familiarity with MySQL * Hands-on experience with AWS services (ECS, S3, Lambda, Cognito) * Experience with Docker and containerized deployments * Familiarity with CI/CD pipelines (GitHub Actions or similar) * Strong understanding of REST API design and documentation (OpenAPI/Swagger) * Experience working across multiple layers of the stack, * Experience with AWS IoT (IoT Core, Greengrass, edge computing) * Additional backend experience (e.g., Node.js/Express) * Modern Java experience (Spring Boot 3.x, Java 17+ / 21) * Experience with IoT device provisioning, telemetry, or fleet management systems * Familiarity with time-series data systems (e.g., Timestream, Kinesis) * Knowledge of OAuth2 / OpenID Connect / Cognito * Experience migrating or consolidating legacy systems * Background working with inherited or contractor-built codebases * Experience in healthcare, medical devices, or regulated environments * Exposure to iOS/iPad application development ## Description * Design and implement Spring Boot REST APIs and React-based frontends * Create and enhance web-based admin interfaces for provisioning, monitoring, configuration, and analytics * Extend and maintain an existing Java/Jersey-based fleet management portal * Support and evolve a Python/Django IoT platform * Implement API proxy and composition patterns to integrate legacy and modern systems * Design and optimize PostgreSQL schemas, including hierarchical data models * Work with AWS cloud services, including IoT Core, Greengrass, ECS, S3, Lambda, and Cognito * Build and deploy containerized applications using Docker and CI/CD pipelines * Contribute to system integration design between embedded devices and cloud platforms * Troubleshoot and resolve complex production issues * Document technical designs, APIs, and operational processes * Collaborate on architecture, code reviews, and engineering best practices