Senior Fullstack Developer, Fullscript

• 5+ years of software development experience with a strong focus on backend and fullstack systems
• Proficiency in Ruby or another modern backend language (Go, Python, TypeScript, etc.)
• Experience building APIs, services, or ingestion systems that handle data at scale
• Strong SQL skills and comfort with data modeling, query optimization, and schema design
• Familiarity with event-driven architectures and tools such as Snowflake, Kafka, Rudderstack, Segment, or similar technologies
• Experience building reusable libraries, packages, or SDKs intended for other developers
• Comfort collaborating across disciplines (engineering, analytics, product, marketing, etc) and bringing clarity to complex problems
• Ability to work independently in an async-friendly environment with clear direction but minimal supervision
• A low-ego, team-first mindset. You communicate well, listen well, and don’t create friction

Desirable

• We’re hiring a Senior Fullstack Developer to join this team
• You’ll work in our profile and audience lane, where customer, product, and marketing data come together to power personalization and insight across the platform
• This role is a fit for someone who loves creating well-designed systems, building reusable tooling, and partnering closely with technical and non-technical teams to ship solutions that last
• You’ll write production-grade backend and fullstack code, shape foundational architecture, and build the packages and SDKs other engineers rely on
• You’ll operate with autonomy, collaborate across domains, and bring clarity, curiosity, and good judgment to a space that grows more important every quarter
• This is a hands-on engineering role, not a pure data role
• You’ll work deeply across backend services, developer tooling, event-driven systems, and the infrastructure that moves and shapes data at scale
• Design and build backend services that support event ingestion, identity stitching, profile creation, and downstream activation
• Develop SDKs, packages, and reusable components. As well as publish them internally or externally to support instrumentation, governance, and developer experience
• Build internal tools and fullstack workflow surfaces that help teams understand, use, and trust the data flowing through their systems
• Improve data flows end-to-end for correctness, performance, and scalability
• Collaborate with PMs, analysts, marketers, and engineers across multiple teams to define requirements and shape solutions
• Validate pipelines and event streams, identify issues, and drive resolution
• Work with senior engineers on architectural initiatives around storage, lineage, schema design, and event modeling
• Write clear, maintainable, well-tested code (and contribute to the patterns and standards that keep our systems healthy)