Senior Software Engineer (Full-Stack, Frontend)
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Requirements
• 5+ years of experience building and shipping production software, with meaningful experience across both frontend and backend systems • Strong frontend expertise using React and modern TypeScript-based workflows, with a proven ability to build complex, maintainable user interfaces • Solid backend experience designing APIs and services (e.g., Python-based frameworks like FastAPI or Django), with an understanding of data modeling and system reliability • Excellent written and verbal communication skills, and comfort collaborating in a remote, cross-functional environment • This role is a great fit if • You’re motivated by real operational impact, not just greenfield abstractions - your work will be used daily in high-stakes, HOA-driven operational workflows • You enjoy owning problems end-to-end, from understanding messy inputs to delivering clean, scalable solutions • You value close collaboration with product managers, operators, and business partners, and believe the best software comes from deep context • You’re excited to help shape systems and patterns that will scale as the HOA product line and team grow • Not a great fit if • You prefer working exclusively on frontend or backend with little interest in the full system • You’re looking for narrowly scoped tasks with limited stakeholder interaction • You’re uncomfortable operating in problem spaces that start ambiguous and require iteration, judgment, and collaboration to clarify • Languages: Python, TypeScript • Backend: FastAPI, Django • Frontend: React • Data: Airflow, dbt, Snowflake, PostgreSQL • Infra: AWS, Terraform • Tooling: GitHub Actions • Mainstay Built on Trust
Responsibilities
• Design, build, and ship end-to-end product features across frontend and backend systems that power HOA intelligence, compliance, and management workflows • Lead the development of complex, data-heavy user interfaces that help operators understand, act on, and automate HOA-related decisions • Build and evolve backend services and APIs that integrate with internal systems, third-party vendors, and large-scale data pipelines • Partner closely with Product, Operations, and other Business stakeholders to deeply understand real-world pain points and translate them into durable software solutions • Influence technical direction through pragmatic system design, thoughtful tradeoffs, and mentorship of other engineers
Benefits
• Zone 1Estimated Base Salary $197,600 – $232,500 • Offers Equity • Zone 2Estimated Base Salary $177,840 – $209,250 • Offers Equity • Zone 3Estimated Base Salary $158,080 – $186,000 • Offers Equity • Upload your resume here to autofill key application fields. • Drop your resume here! • Parsing your resume. Autofilling key fields... • Please Note: we have set up limits for applications for this role. It is in the engineering group. The following limits apply to applications for all jobs within this group: • Candidates may not apply more than 2 times in any 60 day span for any job in the engineering Group. • or drag and drop here • Please provide your personal details so we can get to know you better and stay in touch throughout the hiring process. This includes your full name, contact information, and any other relevant details. • Mainstay Employee • Job Board (Linkedin/Indeed/Other) • leave blank if not applicable • We're only hiring in the United States • Decline to self-identify • Hispanic or Latino - A person of Cuban, Mexican, Puerto Rican, South or Central American, or other Spanish culture or origin regardless of race. • Hispanic or Latino • White (Not Hispanic or Latino) - A person having origins in any of the original peoples of Europe, the Middle East, or North Africa. • White • Black or African American (Not Hispanic or Latino) - A person having origins in any of the black racial groups of Africa. • Black or African American • Native Hawaiian or Other Pacific Islander (Not Hispanic or Latino) - A person having origins in any of the peoples of Hawaii, Guam, Samoa, or other Pacific Islands. • Native Hawaiian or Other Pacific Islander • Asian (Not Hispanic or Latino) - A person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian Subcontinent, including, for example, Cambodia, China, India, Japan, Korea, Malaysia, Pakistan, the Philippine Islands, Thailand, and Vietnam. • Asian • American Indian or Alaska Native (Not Hispanic or Latino) - A person having origins in any of the original peoples of North and South America (including Central America), and who maintain tribal affiliation or community attachment. • American Indian or Alaska Native • Two or More Races (Not Hispanic or Latino) - All persons who identify with more than one of the above five races. • Two or More Races • Hispanic or Latino • White (Not Hispanic or Latino) • Black or African American (Not Hispanic or Latino) • Native Hawaiian or Other Pacific Islander (Not Hispanic or Latino) • Asian (Not Hispanic or Latino) • American Indian or Alaska Native (Not Hispanic or Latino) • Two or More Races (Not Hispanic or Latino) • I identify as one or more of the classifications of protected veteran listed above • I am not a protected veteran