[Remote] Sr. Software Engineer - Mixed Portfolio Foundation

Note: The job is a remote job and is open to candidates in USA. AppFolio is a technology leader in the real estate industry, focused on delivering innovation that empowers customers. They are seeking a Full Stack Senior Software Engineer to join the Mixed Portfolio Foundation team, responsible for building foundational architecture and data models for various property types, while driving new capabilities and enhancing existing solutions.ResponsibilitiesBuild a deep understanding of our existing mixed portfolio segments, including affordable housing and student housing, enabling you and your team to truly own the foundations of these segmentsMaintain our ongoing business segments, including Community Association, Commercial, NYC and etcDevelop scalable, robust, and simple web-based solutions to solve complex business problems - this will involve some combination of leveraging our existing technology, refactoring, integrating with partners, or starting from scratch when it makes senseHelp mentor and guide other software engineersImplement new features and optimize existing ones to drive maximum performanceWork closely with and incorporate feedback from other engineering team members, QA, product owners, and designers. Enthusiastically participate in a high-performing, empowered team with high levels of mutual trust and respect. Along with the team, you will take ownership of your problem space, reflecting on and growing from our failures and celebrating our successesWork in a truly agile fashion to turn a massive, unruly problem into thinly sliced deliverables and execute quickly against them while limiting work in progressResearch, share, and recommend new technologies and trendsHold a high bar of engineering excellence and always look for ways to raise it. Adopt our engineering best practices, provide and receive in-depth code reviews, and participate in healthy debate as a team. Evangelize your own expertise and experience among your teammates and the rest of the organizationPrioritize quality. Thoughtful test coverage is a given and any escalations from external stakeholders like our onboarding or customer care teams are handled and resolved swiftly. Use test-driven development, code reviews, and continuous integration to deliver high-quality software and rapidly fix bugs as they come upSkills5+ years of experience developing web-based applications, preferably in a SaaS environmentExtensive experience designing complex data models that fit into business and compliance requirementsExtensive experience developing web applications, preferably in an agile SaaS environmentYou've successfully driven architectural improvements to enhance scalability, flexibility, or performance — and know how to advocate for technical changes that benefit the broader platformProven experience working across all levels of the development stackStrong familiarity with the technologies we use, like Ruby on Rails, React, MySQL, AWS, SOAStrong familiarity with Agile software development processes: Scrum or KanbanStrong familiarity with Test-Driven-DevelopmentCreativity and proactivity - an ability to solve complex problems without a roadmapYou love to learn about and use new tech, but understand the value of continuing to leverage existing technology when it gets the job doneYou care about the long-term maintainability of the codebase and advocate for refactoring and code cleanlinessYou can identify and resolve code-smells through sensible refactoringYou bring your A-game to daily standup competitions — because nothing tastes better than victory (especially when it comes with a free team lunch)Experience working across all levels of the development stackExperience with some areas of our tech like Ruby on Rails, React, MySQL, AWS, SOAFamiliarity with Agile software development processes: Scrum or KanbanFamiliarity with Test-Driven-DevelopmentBenefitsRegular full-time employees are eligible for benefits - see here.We enable a culture of high performance, where delivering results is recognized by opportunities for growth and compelling total rewards.We partner with you to realize your potential by investing in you from the start.We're cultivating a team of big thinkers through coaching and mentorship with our best-in-class leaders, and giving you the time and tools to develop your skills.We excel at hybrid work by fostering an environment that feels flexible, personal and connected, no matter where we are.We create space to fuel innovation and collaboration, and we come together to celebrate, connect, and succeed.Company OverviewAppFolio is a cloud business management solutions provider for the real estate industry. It was founded in 2006, and is headquartered in Goleta, California, USA, with a workforce of 1001-5000 employees. Its website is https://www.appfolio.com.Company H1B SponsorshipAppFolio has a track record of offering H1B sponsorships, with 7 in 2026, 18 in 2025, 24 in 2024, 22 in 2023, 34 in 2022, 51 in 2021, 35 in 2020. Please note that this does not guarantee sponsorship for this specific role.