Senior Full Stack Engineer – Leading Direct Marketing Powerhouse We’re looking for a Senior Full Stack Engineer that will serve as a technical leader driving the evolution of our high-scale eCommerce and ad-tech platforms. This role combines deep technical expertise in payment systems, server-to-server integrations for tracking and conversions, and AI-driven development practices with the vision to lead and mentor our engineering team. You will architect and maintain mission-critical systems that manage 200+ simultaneous offers in a complex, configuration-driven environment, ensuring scalability, reliability, and performance across our Heroku-based infrastructure. • Hybrid position to our office located in Los Angeles, CA or open to remote. Role Details: Platform Architecture & Development • Design, develop, and scale full-stack applications supporting 200+ concurrent offers in a configuration-driven eCommerce environment on Heroku Services • Architect robust server-to-server integration solutions for customer event signals supporting tracking and conversions between ad platforms, analytics systems, and eCommerce infrastructure • Lead the modernization and synchronization of legacy codebases, establishing sustainable maintenance practices and technical debt reduction strategies Payment Systems & Integration • Own end-to-end payment processing architecture including credit card transactions, digital wallets (PayPal), and enterprise payment gateways (Cybersource) • Implement and maintain PCI-compliant payment flows with advanced fraud detection and tax calculation capabilities • Design fault-tolerant payment reconciliation systems that handle high-volume transactions with zero downtime Ad-Tech & Data Pipeline Engineering • Build and optimize customer event signal management systems for real-time ad attribution and conversion tracking • Develop sophisticated data collection pipelines capturing user interactions across web properties, video players, and checkout flows • Implement server-side tracking and conversion solutions for privacy-compliant marketing attribution across multiple ad platforms Technical Leadership & Innovation • Champion AI-assisted development practices, integrating AI agents and tools into daily engineering workflows • Mentor engineering team members, establishing coding standards and architectural best practices • Lead technical decision-making with precision, balancing immediate needs with long-term scalability • Drive adoption of modern development practices while managing technical debt in existing systems System Reliability & Performance • Ensure 99.9%+ uptime for critical eCommerce services handling high-traffic campaigns • Optimize Angular/Node.js/PostgreSQL stack performance for sub-second response times • Implement comprehensive monitoring, alerting, and self-healing systems • Lead incident response and post-mortem processes to continuously improve system reliability What We’re Looking For: Core Technical Stack • Expert-level proficiency in Angular (latest versions), Node.js, and PostgreSQL • Deep understanding of Heroku platform capabilities, limitations, and optimization strategies • Strong experience with RESTful APIs, GraphQL, and real-time data synchronization • Proficiency in SQL optimization, database design, and data modeling at scale eCommerce & Payment Expertise • Hands-on experience with payment gateway integrations (Stripe, PayPal, Cybersource, etc.) • Understanding of PCI compliance, tokenization, and secure payment processing • Experience with subscription management, dynamic pricing, and complex offer configurations • Knowledge of tax calculation services and international payment considerations Ad-Tech & Analytics • Expertise in server-side tracking implementations (Facebook Conversions API, Google Enhanced Conversions, TikTok Events API) • Understanding of attribution models, conversion tracking, and marketing analytics • Experience with event-driven architectures and real-time data streaming • Knowledge of privacy regulations (GDPR, CCPA) and their impact on tracking systems AI & Modern Development • Active practitioner of AI-assisted development using GitHub Copilot, ChatGPT, or similar tools • Experience implementing ML/AI features in production applications • Forward-thinking approach to leveraging AI for code generation, testing, and documentation • Commitment to staying current with AI development tools and best practices Leadership & Communication • Proven ability to communicate complex technical concepts to diverse stakeholders • Track record of mentoring developers and building high-performing teams • Self-driven with exceptional problem-solving and decision-making abilities • Experience leading technical initiatives from conception to production deployment Operational Excellence • Strong debugging and troubleshooting skills across distributed systems • Experience with CI/CD pipelines, automated testing, and deployment strategies • Understanding of cloud cost optimization and resource management • Commitment to documentation and knowledge sharing The base salary range is $112,600 - $150,200, plus dual bonus potential along with employee ownership.