Senior Software Engineer, 6sense

• You are a Software Engineer who thrives on solving complex, abstract problems and building scalable systems that power high-impact business functionality
• You have a strong intuition for designing flexible, performant data querying frameworks and can architect systems that transform abstract logic into optimized query plans across diverse database backends
• You are not afraid to dive deep into large codebases, work with intricate logic trees, or optimize SQL for billion-row tables
• You understand the art of abstraction—how to create services and SDKs that are both powerful and intuitive to use
• You have a collaborative mindset, a bias toward ownership, and the grit to deliver in high-scale environments
• You have good communication skills, a ‘can do’ entrepreneurial attitude, and a team-oriented mindset
• BS/MS in Computer Science or a related technical field
• 5+ years of backend engineering experience, ideally in data-intensive systems
• Strong foundation in data structures, algorithms, and software architecture
• Deep experience in writing complex, optimized SQL across distributed data stores
• Hands-on expertise in Python (preferred), with willingness or experience working in Java
• Familiarity with CI/CD tools like Jenkins or GitHub Actions and test automation strategies
• You are a system thinker who enjoys building platforms that empower other developers
• Familiarity with database internals and performance tradeoffs for engines like SingleStore, Trino, Hive, Spark, or Databricks
• Proven success in building systems that scale to billions or trillions of records
• Comfort working with dynamic schema modeling, ORMs, and custom DSLs
• Proficient in cloud services (AWS, GCP, or Azure), and containerized environments (Docker, Kubernetes)
• You can articulate complex logic clearly to both technical and non-technical audiences
• You take ownership and pride in your work, pushing toward elegant, maintainable solutions
• You’re curious, adaptable, and open to evolving with the framework as it grows in scope and complexity
• You value teaching and mentoring, and you’re capable of guiding others through architectural tradeoffs and best practices

Desirable

• Own and evolve a framework for turning dynamic, logic-driven filter sets (arranged in complex and/or trees) into performant query plans for multiple backends
• Translate filter trees with native object types, dynamic operators, parameters, and internal relationships into efficient queries for query engines such as SingleStore and Trino
• Ensure that heterogeneous filters (e.g., leads, accounts, activities) can be composed and executed to produce the correct unified output object type
• Design and develop reusable SDKs and microservices that empower other engineering teams to consume the query framework as a self-service platform
• Build scalable solutions that are robust to high cardinality, massive datasets (billions to trillions of rows), and distributed database architectures
• Identify optimization opportunities and contribute to the framework’s resilience, scalability, and developer usability
• Partner closely with teams building Segments, Sales Intelligence, Workflows, and Analytics to ensure your services meet broad, evolving needs
• Collaborate with Architects, Product Managers, and peer engineers to drive continuous improvements and architectural evolution