Full Stack Software Intern Jobs in Austin, TX (NOW HIRING)

We are seeking a Senior Full-Stack Software Engineer to join our high-performance engineering organization as a full-time, hands‑on individual contributor. In this role, you will be embedded within a cross‑functional team owning critical segments of our consumer ecosystem.

Our engineering organization is structured so that each domain team owns its vertical stack end‑to‑end—from backend microservices and APIs through frontend and DevOps. We are looking for an engineer with genuine depth across all layers of the stack who can move seamlessly between backend logic and rich frontend experiences, contributing independently within their first few weeks.

Beyond technical skills, we want someone who is innovative, proactive, and self‑driven—an engineer who actively seeks out better tools, raises quality standards, and delivers without waiting for direction. We place a premium on self‑learners who challenge the status quo, take genuine pride in the reliability of what they ship, and comfortably navigate ambiguity in a fast‑paced environment.

1. New Constructions

   The Focus: Powering the leading builder listing platform in the US, empowering a diverse range of consumers to discover and customise their dream homes.

   What You’ll Work On: Building hyper‑customised web experiences for vibrant new communities, optimising high‑velocity frontends for substantial traffic and search engine optimisation (SEO), enhancing backend services, modernising infrastructure, expanding automated test suites, and engineering automated developer toolchains for instantaneous cloud service provisioning.

2. Mortgage & Financial Services

   The Focus: Building the digital future of home financing by creating seamless, secure, and transparent financial tools for buyers and lenders.

   What You’ll Work On: High‑traffic loan origination flows, real‑time rate and affordability calculators, secure lead capture systems, compliance‑aware data architecture, and deep integrations with third‑party lender partner APIs.

3. Rentals Post‑Lead & B2B Partnerships

   The Focus: Powering what happens after the lead — building the products and backend services that turn renter interest into completed applications and drive rental revenue for property managers and independent landlords.

   What You’ll Work On: Partner‑facing portals and promoted‑listing products, external partner integrations (application and listing providers), GraphQL services and backend infrastructure at scale, revenue‑diversification features, and the data pipelines behind partner performance and reporting.

• Product Delivery: Design, build, and maintain high‑traffic features and partner integrations across the full vertical stack (backend, APIs, frontend, infrastructure, databases).
• Engineering Excellence: Write well‑tested, production‑ready code. Own and enforce test automation standards (unit, integration, E2E) in line with an engineering‑owned quality model.
• Operational Ownership: Take full accountability for the operational quality, observability, and reliability of your services—including setting SLOs, monitoring, alerting, and incident response readiness.
• Data & Security: Ensure data integrity, secure engineering practices, and compliance‑aware design when handling sensitive consumer, financial, and high‑volume marketplace data.
• Modern Workflow Innovation: Leverage and champion the adoption of AI‑assisted development tools (e.g., Claude Code, Windsurf, Portkey, Gemini) to optimise development workflows.
• Leadership & Collaboration: Drive project delivery with strong personal ownership—managing scope, timelines, and cross‑functional dependencies. Communicate technical concepts clearly to non‑technical stakeholders to build trust quickly.

• Experience: 5+ years of professional software engineering experience building and scaling distributed systems and high‑traffic, consumer‑facing products.
• True Full‑Stack Capability: Proven depth across backend services, RESTful/GraphQL APIs, modern frontend frameworks (React or equivalent), and cloud/DevOps.
• Backend Expertise: Strong experience with Node.js and microservice architectures.
• Domain Background: Experience building search, marketplace, listing‑based, or financial services products (e.g., loan application flows, rate calculators, lender/partner API integrations).
• Operational Rigor: Direct ownership of production infrastructure, including observability, SLOs, and incident management.
• Execution: Strong project management skills to independently drive features from scoping through delivery in an agile, matrixed environment.
• Education: Bachelor’s degree in Computer Science or equivalent practical experience.
• AI Tools: Hands‑on experience integrating AI‑assisted development tools into daily workflow.
• Data Architecture: Familiarity with event‑driven architectures (e.g., Kafka, RabbitMQ, SQS/SNS) and data pipelines (e.g., Snowflake, S3, Aurora, reverse ETL).
• Cloud & DevOps: Experience deploying and operating services on AWS using Kubernetes and containerization.
• Advanced API Design: Familiarity with federated GraphQL architecture.
• Compliance Awareness: Understanding of financial data sensitivity and compliance considerations relevant to consumer financial products (e.g., RESPA, TILA awareness).
• Culture: Comfort working in a data‑ and metrics‑driven engineering culture aligned with performance KPIs.

• Inclusive and competitive medical, Rx, dental, and vision coverage.
• Family‑forming benefits.
• 13 paid holidays.
• Flexible time off.
• 8 hours of paid volunteer time off.
• Immediate eligibility into Company 401(k) plan with 3.5% company match.
• Tuition reimbursement program for degree and non‑degree programs.
• 1:1 personalized financial planning sessions.
• Student debt retirement savings match programme.
• Free snacks and refreshments in each office location.

Diversity is important to us, therefore Realtor.com® is an Equal Opportunity Employer regardless of age, color, national origin, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, marital status, status as a disabled veteran and/or veteran of the Vietnam Era or any other characteristic protected by federal, state or local law. In addition, Realtor.com® will provide reasonable accommodations for otherwise qualified disabled individuals.