Full Stack Software Engineer Intern Jobs in Buffalo, NY

As a Senior Software Engineer II, you will join a world-class engineering team operating the only end-to-end platform in the real estate industry. We are building a high-caliber talent pool of Senior Engineers to lead technical initiatives across several key domain areas. For these roles, we are seeking versatile Full-stack Engineers and have openings tailored for both frontend-leaning and backend-leaning specializations.

Our Key Domains & Focus Areas

Based on your background and interests, you will have the opportunity to align with one of our specialized domains:

• Agent Client Tools - Buy Side: Crafting collaborative, client-facing interfaces and agent tools that guide buyers through every step of the journey, from initial home search to close.
• CRM - Comms: Designing and scaling the communication engines (email, text, and notifications) that enable real-time, personalized interaction between agents and their clients at scale.
• CRM - Contacts: Architecting the high-performance, foundational data models, relationship graphs, and contact-management interfaces that serve as the single source of truth for millions of client records.
• Compass Integrated Services (CIS): At the core of driving our next phase of growth and platform evolution, building the technology and operations that power our strategic partner services; including Title & Escrow, Home Warranty, Mortgage, and Insurance. This team empowers agents and clients across a broad national footprint to seamlessly manage the entire transaction journey through a standardized, "one-click" workflow.

What You Will Do

• End-to-End Design & Build: Architect, build, and maintain high-performance, distributed, event-driven microservices and cloud infrastructure, while ensuring seamless integration with modern, intuitive frontend interfaces.
• Drive Technical Delivery: Independently define, decompose, and lead the delivery of complex technical projects and subsystems across the entire stack.
• Incorporate Intelligent Automation: Build and operationalize modern software patterns, including integrating AI models, data pipelines, and telemetry systems to automate workflows.
• Champion Engineering Excellence: Perform rigorous code and design reviews, write high-quality automated tests (unit, integration, and end-to-end), and continuously leave codebases cleaner and more performant than you found them.
• Own Your Domain: Act as a subject matter expert, creating clear technical documentation (architecture diagrams, runbooks, and specs) and owning your services and applications throughout their entire lifecycle.
• Collaborate & Mentor: Work closely with cross-functional stakeholders to balance requirements, resolve systemic bottlenecks, and actively mentor peers to level up the engineering team.

What We Look For

• Education: BS in Computer Science, Software Engineering, or equivalent practical experience.
• Experience: 5+ years of professional software development experience, with a proven track record of delivering complex technical projects autonomously. (Candidates with 3+ years of exceptional, fast-tracked execution are also encouraged to apply).
• Fullstack Capabilities (Frontend or Backend Leaning):
• For Backend-Leaning Candidates: Strong proficiency in backend languages such as Go or Java, with a passion for API design, distributed systems, and backend data architecture.
• For Frontend-Leaning Candidates: Deep expertise in modern frontend frameworks (e.g., React), UI/UX execution, and browser performance, paired with a solid understanding of backend APIs and integrations.
• Professional experience with Python is a major plus (highly valued for data pipelines and AI/LLM workflows).
• Experience with Kafka is a plus.
• System Architecture: Solid hands-on experience designing and operating cloud-based microservices architectures on major cloud infrastructure (AWS preferred, GCP, or Azure).
• Modern SDLC Practices: Strong familiarity with continuous integration/continuous delivery (CI/CD) pipelines, containerization, and Agile/Scrum methodologies.
• Domain Expertise (Area Dependent):
• Experience building high-throughput user workflow tools, transactional systems, dynamic user interfaces, or SaaS products.
• Communication: Excellent verbal and written communication skills with a strong sense of technical empathy for your end-users (whether they are real estate agents or fellow developers).

Compensation: The base pay range for this position is $176,800-$196,100 annually; however, base pay offered may vary depending on job-related knowledge, skills, and experience. Bonuses and restricted stock units may be provided as part of the compensation package, in addition to a full range of benefits. Base pay is based on market location. Minimum wage for the position will always be met.