About OneApp: OneApp is a mission-driven company that increases access to rental housing by removing financial and systemic barriers for renters while reducing risk for property managers. We're building market-based solutions to unlock housing opportunities at scale, with a bold 10-year goal to help 1 million people gain access to housing. Role Overview: We are seeking a Full Stack Engineer who can quickly contribute in a hands-on environment while continuing to grow with the organization.

In this role, you will take ownership of improving platform stability, reliability, and performance, working independently to support a critical production system. As you become more deeply integrated with the platform and business, you will also contribute to ongoing system enhancements and full stack feature development across the product. In addition, you will play a key role in transitioning technical ownership of our OneApp platform and bringing it in-house by managing the production of the platform that directly supports and drives our business operations with a primary focus on platform ownership, stabilization, and reliability and a secondary focus on full stack application and feature development.

Details: Details: Job Title : Back-End Software Engineer - Portland Metro Location : Remote Salary : $125,000-$155,000 annually Reports to : Principal Engineer Work Hours : Full Time, Hours Monday-Friday 9:00am-5:00pm (your local time) Develop a strong working knowledge of the existing Java/Spring backend, React frontend, and supporting platform architecture. Own and troubleshoot production issues independently, working across the full stack to identify root causes and implement reliable solutions. Maintain and improve the stability, reliability, and performance of critical business workflows.

Execute deployments through existing CI/CD pipelines and support improvements to release quality and consistency. Troubleshoot deployment, environment, integration, and production-related issues during business hours. Build, maintain, and enhance full stack features across the backend, frontend, APIs, database, and third-party integrations.

Work within an existing codebase while making thoughtful improvements to structure, maintainability, and test coverage. Document system behavior, dependencies, technical gaps, and completed work to support team knowledge sharing. Help reduce reliance on external vendors by progressively taking ownership of day-to-day platform changes and support.

Requirements

, manage risks, and deliver reliable solutions. Communicate clearly and proactively regarding progress, blockers, risks, and technical decisions.

Required Qualifications

5+ years of software engineering experience working in production environments. Strong hands-on experience with Java and the Spring ecosystem, including Spring Boot, Spring MVC, and Spring Data. Proven ability to work within and stabilize complex or legacy production codebases.

Demonstrated ability to work independently, take ownership of deliverables, and drive work to completion. Strong understanding of MySQL, including query optimization, indexing, and data integrity principles. Experience executing, troubleshooting, and supporting application deployments end to end.

Working knowledge of RESTful API design, development, and third-party system integrations. Experience with Git-based development workflows and CI/CD pipelines. Experience writing and maintaining automated tests using frameworks such as JUnit, Jest, or similar tools.

Preferred Qualifications

js. Familiarity with AWS services such as EC2, RDS, and S3. Experience improving deployment processes, release management, or CI/CD automation.

Background working in fintech, proptech, or other regulated industries. Experience with monitoring and observability tools such as Datadog, CloudWatch, or similar platforms.

Full Stack Developer - Portland Metro