Senior Lead Software Engineer, Marketing and Messaging Experimentation

• Serve as a technical innovator and cross-functional architect, partnering with data science, product, and engineering teams to design resilient, system-level architectures for enterprise-wide experimentation, audience segmentation, and customer journey orchestration.
• Architect and scale high-performance systems and engines across experimentation, audience segmentation, and journey decisioning to optimize message effectiveness and analyze customer responsiveness leveraging advanced ML models and personalization techniques.
• Integrate cutting-edge AI, agentic workflows, and distributed streaming architectures to power fast, scalable journey orchestration, automated creative testing, and targeted segment delivery across products, messages, and channels.
• Mentor and guide software engineers while cultivating a culture of technical excellence, continuous experimentation, and hands-on innovation with emerging tech stacks.

• Bachelor’s Degree
• At least 6 years of experience in software engineering (Internship experience does not apply)
• At least 1 year experience with cloud computing (AWS, Microsoft Azure, Google Cloud), * Master’s Degree
• 9+ years of experience in at least one of the following: Python, Java, Go, SQL, etc
• 4+ years of experience with AWS, GCP, Azure, or another cloud service
• 4+ years of experience in open source frameworks
• 4+ years of experience with distributed streaming technologies (e.g., Apache Kafka)
• 4+ years of people management experience, or mentoring talented engineers
• 2+ years of experience in Agile practices
• Proficiency in system architecture, system design, and large-scale, low-latency applications
• Experience leveraging interactive AI tooling to accelerate productivity, utilizing capabilities beyond basic code completion.
• Hands-on experience with Agentic AI workflows/automation, integrating Machine Learning models or AI-driven systems. Experience building or scaling experimentation platforms and A/B, MAB testing frameworks.

Capital One will consider sponsoring a new qualified applicant for employment authorization for this position.

The minimum and maximum full-time annual salaries for this role are listed below, by location. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked.

Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being. Learn more at the Capital One Careers website (https://www.capitalonecareers.com/benefits) . Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level., Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).