Principal Software Engineer
About The Position
We help the world’s biggest brands move from brief to fully personalized campaigns — in days, not months. Founded by Abhay Parasnis and backed by Microsoft, GV, Salesforce, Lightspeed, Madrona and Menlo, we’re building category-defining technology at the intersection of creativity and AI with real impact. Join us to help shape the future of enterprise marketing. As a Principal Engineer, you will: Solve complex architectural challenges to harness the power of LLMs and multimodal AI for scalable, enterprise-grade content generation. Lead cross-functional technical initiatives spanning multiple teams and product areas. Partner with enterprise customers to deeply understand their challenges and translate them into robust, high-impact solutions. Mentor and guide engineers across the organization, raising the bar for technical excellence. Advocate for best-in-class engineering practices, ensuring security, scalability, and maintainability across the platform. How You’ll Make an Impact Architectural Leadership: Define and evolve the architecture for AI-driven, multimodal content personalization. Evaluate and integrate cutting-edge AI technologies, optimizing for cost, latency, and output quality. Cross-Company Impact: Spearhead engineering initiatives that address critical business priorities. Translate complex enterprise customer requirements into practical, scalable solutions. Mentorship & Advocacy: Coach engineers in AI/ML systems, distributed architectures, and multimodal generation pipelines. Champion engineering best practices — from code quality to CI/CD, observability, and security. Execution Excellence: Contribute hands-on to code and design when needed. Ensure solutions meet enterprise-grade standards for security, reliability, and compliance. In your first 3 months, you will: Shape the architecture for the next generation of AI-driven, multimodal content solutions. Drive engineering excellence and raise the company-wide technical bar. Deliver solutions that directly address critical enterprise customer needs. Mentor engineers into senior technical leadership roles.
Requirements
- 10+ years in software engineering, with at least 3+ years in a principal/staff-level IC role.
- Master’s or PhD degree in Computer Science or a related field
- Proven experience architecting distributed systems, AI/ML platforms, or large-scale SaaS applications.
- Strong background in cloud-native architecture (AWS, GCP, Azure), containerization (Docker, Kubernetes), and modern API design.
- Track record of influencing technical direction across multiple teams.
- Excellent communication skills for both technical and non-technical stakeholders.
- Expertise in LLMs (prompt engineering, fine-tuning, inference) and multimodal AI (text, image, video, audio)
Responsibilities
- Solve complex architectural challenges to harness the power of LLMs and multimodal AI for scalable, enterprise-grade content generation.
- Lead cross-functional technical initiatives spanning multiple teams and product areas.
- Partner with enterprise customers to deeply understand their challenges and translate them into robust, high-impact solutions.
- Mentor and guide engineers across the organization, raising the bar for technical excellence.
- Advocate for best-in-class engineering practices, ensuring security, scalability, and maintainability across the platform.
- Define and evolve the architecture for AI-driven, multimodal content personalization.
- Evaluate and integrate cutting-edge AI technologies, optimizing for cost, latency, and output quality.
- Spearhead engineering initiatives that address critical business priorities.
- Translate complex enterprise customer requirements into practical, scalable solutions.
- Coach engineers in AI/ML systems, distributed architectures, and multimodal generation pipelines.
- Champion engineering best practices — from code quality to CI/CD, observability, and security.
- Contribute hands-on to code and design when needed.
- Ensure solutions meet enterprise-grade standards for security, reliability, and compliance.
Benefits
- Competitive compensation — including salary, equity, and 401(k)
- Full medical, dental, and vision insurance for you and your family
- HSA and FSA options to support your financial wellness
- Flexible time off — including parental leave
- Well-being programs — resources to support your mental and physical health
- Daily lunch & snacks
- Mentorship & impact — work closely with top AI leaders on products that ship
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What This Job Offers
Job Type
Full-time
Career Level
Principal
