Senior Full-Stack Software Engineer at Particle41

<h1><span style="font-size: 14pt;"><strong>The Opportunity</strong></span></h1> <p>We’re looking for a Senior Full-Stack Engineer who can take ownership of the codebase and infrastructure. This isn’t just a “build what you’re told” role—you’ll be the primary technical driver of the platform, making architecture decisions, shipping features end-to-end, and ensuring our systems run reliably in production. You’ll work directly with the founder and have real autonomy to shape the product’s technical direction.</p> <h1><span style="font-size: 14pt;"><strong>Our Tech Stack</strong></span></h1> <table style="width: 34.684685%; height: 348px;"> <thead> <tr style="height: 47px;"> <th style="width: 14.7778%; height: 47px;"> <p><strong>Layer</strong></p> </th> <th style="width: 80.615869%; height: 47px;"> <p><strong>Technologies</strong></p> </th> </tr> <tr style="height: 66px;"> <th style="width: 14.7778%; height: 66px;"> <p><strong>Backend</strong></p> </th> <th style="width: 80.615869%; height: 66px;"> <p>Java 8, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Gradle</p> </th> </tr> <tr style="height: 47px;"> <th style="width: 14.7778%; height: 47px;"> <p><strong>Frontend</strong></p> </th> <th style="width: 80.615869%; height: 47px;"> <p>Angular 7, TypeScript, Angular Material, RxJS, Webpack</p> </th> </tr> <tr style="height: 47px;"> <th style="width: 14.7778%; height: 47px;"> <p><strong>Database</strong></p> </th> <th style="width: 80.615869%; height: 47px;"> <p>PostgreSQL with JPA/Hibernate, Liquibase migrations</p> </th> </tr> </thead> <tbody> <tr style="height: 47px;"> <td style="width: 14.7778%; height: 47px;"> <p><strong>Infrastructure</strong></p> </td> <td style="width: 80.615869%; height: 47px; text-align: center;"> <p><strong>AWS (EC2, RDS, S3, CloudFront), Docker</strong></p> </td> </tr> <tr style="height: 47px;"> <td style="width: 14.7778%; height: 47px;"> <p><strong>Framework</strong></p> </td> <td style="width: 80.615869%; height: 47px; text-align: center;"> <p><strong>JHipster (project scaffolding and conventions)</strong></p> </td> </tr> <tr style="height: 47px;"> <td style="width: 14.7778%; height: 47px;"> <p><strong>Monitoring</strong></p> </td> <td style="width: 80.615869%; height: 47px; text-align: center;"> <p><strong>Bugsnag (error tracking)</strong></p> </td> </tr> </tbody> </table> <h1><span style="font-size: 14pt;"><strong>What You’ll Do</strong></span></h1> <ul> <li>Own the full application lifecycle—backend APIs, frontend UI, database schema, CI/CD pipelines, and production infrastructure on AWS</li> <li>Design, develop, and ship new features across the Java/Spring Boot backend and Angular frontend</li> <li>Manage and optimize our PostgreSQL database, including schema migrations (Liquibase), query performance tuning, and data integrity</li> <li>Maintain and improve AWS infrastructure: EC2, RDS, S3, CloudFront, and related services</li> <li>Collaborate directly with the founder to translate business requirements into technical solutions</li> <li>Improve code quality through testing, code reviews, refactoring, and documentation</li> <li>Troubleshoot and resolve production issues quickly and thoroughly</li> <li>Evaluate and adopt modern tools, frameworks, and practices to keep the platform competitive</li> <li>Leverage AI-powered development tools (e.g., Claude, GitHub Copilot) to accelerate delivery and improve code quality</li> </ul> <h1><span style="font-size: 14pt;"><strong>What We’re Looking For</strong></span></h1> <h2><span style="font-size: 14pt;"><strong>Required</strong></span></h2> <ul> <li>5–8+ years of professional software development experience</li> <li>Strong proficiency in Java and the Spring Boot ecosystem (Spring MVC, Spring Data JPA, Spring Security)</li> <li>Solid front-end skills with Angular (TypeScript, RxJS, component architecture)</li> <li>Deep experience with PostgreSQL or similar relational databases—schema design, migrations, query optimization</li> <li>Hands-on experience with AWS services (EC2, RDS, S3, CloudFront, IAM) or comparable cloud platforms</li> <li>Comfortable working across the entire stack and owning infrastructure alongside application code</li> <li>Strong English communication skills (written and verbal) for daily collaboration</li> <li>Self-directed and proactive—you take initiative, flag issues early, and don’t wait to be told what to do</li> <li>Available during US business hours (Central Time preferred, but flexible within the Americas)</li> </ul> <h2><span style="font-size: 14pt;"><strong>Nice to Have</strong></span></h2> <ul> <li>Experience with JHipster-generated applications</li> <li>Familiarity with Liquibase for database change management</li> <li>Experience with Docker, CI/CD pipelines (GitHub Actions, Jenkins, or similar)</li> <li>Background in marketplace platforms, subscription billing, or scheduling systems</li> <li>Exposure to mapping/GIS tools (Google Maps API, geospatial queries)</li> <li>Interest in or experience with AI-assisted development workflows</li> </ul>