OneApp · 5 hours ago
Back-End Software Engineer
United States
Full-time
Remote
Mid, Senior Level
$125K/yr - $130K/yr
5+ years expOneApp 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. As a Backend Software Engineer at OneApp, you will design and scale the systems that power our platform, ensuring they are secure, scalable, and reliable while collaborating closely with product and frontend engineering teams.
AppsOnline PortalsReal Estate
Responsibilities
Design, build, and maintain scalable backend services and APIs using TypeScript/Node.js and our React-based frontend
Manage and optimize our MySQL databases with a focus on complex query optimization and performance tuning
Collaborate with product and frontend teams to translate business needs into technical solutions
Own the evolution and maintenance of our legacy Java/Spring platform while driving modernization efforts
Ensure data integrity and system observability across backend services
Integrate and maintain connections to third-party APIs, ensuring reliability and proper error handling
Implement secure authentication and authorization using JWT, OAuth, and other modern auth patterns
Lead contractor teams and coordinate distributed engineering efforts across multiple work streams
Build and maintain Docker containerized applications with strict adherence to CI/CD pipelines using GitHub Actions
Write comprehensive tests using Jest for backend services and support Selenium - based frontend testing
Conduct load testing and performance analysis to ensure systems can handle production scale
Respond to and resolve production incidents, including participating in on-call rotation as needed
Ensure data integrity, system observability, and monitoring across all backend services
Participate in code reviews and contribute to shared engineering standards and documentation
Mentor and support junior and mid-level engineers through collaboration and feedback
Contribute to technical direction as OneApp continues to scale
Qualification
Required
5+ years of backend engineering experience in a production environment
Strong proficiency in TypeScript/Node.js for modern backend development or ability to learn quickly
Experience with Java/Spring and managing legacy systems
Deep knowledge of MySQL including complex queries, indexing, and performance optimization
Proven ability to design and implement RESTful APIs and integrate third-party services
Strong understanding of authentication and authorization (JWT, OAuth 2.0, session management)
Expertise in Docker containerization and CI/CD pipelines (GitHub Actions preferred)
Experience with testing frameworks (Jest or similar) and test automation strategies
Hands-on experience with load testing tools and methodologies (JMeter, k6, Artillery, etc.)
Track record of handling production incidents and on-call responsibilities
Solid understanding of system design, scalable architecture, and distributed systems
Experience leading or coordinating contractor teams and distributed engineering efforts
Strong communication skills with an emphasis on clarity, documentation, and cross-functional collaboration
Preferred
Experience in fintech, proptech, or other regulated environments
Exposure to event-driven or service-oriented architectures
Experience improving or modernizing legacy systems
Experience with AWS services (RDS, EC2, ECS, Lambda, etc.)
Familiarity with monitoring and observability tools (CloudWatch, Datadog, New Relic)
Prior experience mentoring or providing technical guidance
Benefits
Medical, Dental and Vision Benefits
401K Plan
Unlimited PTO
Company
OneApp
OneApp offsets economic housing setbacks with modern, innovative solutions and a goal to house 1M people by 2032.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Nat Parker
Chief Operating Officer
Company data provided by crunchbase