Senior Software Engineer, Platform

Qualified is the Agentic Marketing Platform for B2B companies. With Piper the AI SDR Agent, Qualified offers a whole new way to grow inbound pipeline. Piper operates across both the website and email, working to engage website visitors, capture leads, and convert buyers into pipeline around the clock. Hundreds of the world’s leading brands—including Crunchbase, Asana, Box, and Grubhub—choose Qualified to increase lead conversions, generate more meetings, and improve efficiency within their inbound pipeline motion.

Join our Platform Engineering Team at Qualified as a Senior Platform Engineer and play a pivotal role in constructing and maintaining the critical systems that form the backbone of our operations. Our team is responsible for developing scalable, high-performance backend systems foundational to our product's functionality. Your goal will be to ensure these systems are robust, secure, and capable of supporting complex, real-time interactions with our customers, while maintaining high standards of reliability and performance.

This is a technical role with high impact where you will drive the evolution of our engineering practices and architectural standards. You will provide technical guidance and mentor other developers to foster a culture of excellence within the organization. Beyond code, you will collaborate with cross-functional partners to ideate and execute platform initiatives that solve complex problems. Earning customer trust is paramount;

therefore, you will focus on delivering business-critical solutions that directly contribute to our customers' success and ROI.

• Construct and maintain the critical systems that form the backbone of our operations.

• Develop and maintain scalable, high-performance backend systems foundational to our product's functionality.

• Continuously improve system performance, identify bottlenecks, and deploy optimizations for smooth operation at scale.

• Support and scale highly-available, highly-trafficked services essential for our customers' time-sensitive, business-critical needs.

• Evaluate new technologies and introduce new subsystems as the footprint and complexity of our product grows.

• Uphold high standards of quality through best practices in coding, testing, deployment, and proactive system health monitoring.

• Mentor other engineers, help build our team's culture, and set standards for engineering excellence.

• Embrace a culture of flexibility and efficiency, moving fast to capture the huge opportunity before us.

• Expert-level proficiency in AI-assisted software development (e.g., Claude, Cursor, etc); you are capable of leveraging these tools to significantly accelerate your output from day one.

• 5+ years of experience in professional full-stack or backend software development.

• Proficiency in programming languages such as Ruby on Rails, Python, or Go.

• Proven experience working with backend programming languages and familiarity with SQL, RDBMS (Postgre
  
  SQL preferred), and data warehousing solutions.

• Experience with deploying and monitoring code on cloud platforms such as AWS, Google Cloud, or Azure.

• Strong software engineering practices (e.g. coding, unit testing, code reviews, design documentation).

• Strong debugging skills and experience solving complex technical problems.

• Experience in leading large-scale projects while guiding and mentoring other developers.

• A commitment to quality, demonstrated by rigorous testing and code review practices.

• B.S. or higher in Computer Science (or equivalent work experience).

• Foundational Impact:
  You'll be a key member of our product team, helping to shape the future of our platform by integrating cutting‑edge AI technologies.

• High‑Growth Environment:
  Join us at a pivotal stage where you can establish best practices that will scale with our rapid growth and expansion.

• Cutting-Edge AI:
  Work on unique challenges related to AI‑driven products and help define the future of B2B applications.

• Close Leadership
  
  Collaboration:
  
  Partner with leadership to ensure AI is integrated into our strategic decision‑making.

• Career Growth:
  Lead and grow as a key member of the product team with…