Staff Software Engineer - Data

6sense's mission is to multiply what matters: growth, retention, and efficiency.  We envision a future where companies, teams and people reach their full potential.

People are the heart and soul of 6sense. We serve with passion and purpose. We live by our Being 6sense values of Win as One Team, Stay Curious, Do The Right Thing, Own the Outcome, and Create Belonging.  Every 6sensor plays a part in defining the future of our industry-leading technology.  6sense is a place where difference-makers roll up their sleeves, take risks, act with integrity, and measure success by the value we create for our customers.  We want 6sense to be the best chapter of your career. 

This is a senior individual contributor role for engineers who enjoy owning complex systems end‑to‑end, influencing technical direction across teams, and solving problems where correctness, scale, and reliability really matter. You’ll work on problems that don’t have obvious answers and your decisions will shape how data flows through 6sense for years to come.

• Design, build, and evolve high‑throughput batch and streaming data pipelines that process billions of records.
• Own core datasets that power product features, analytics, and ML systems.
• Build systems that handle enrichment, deduplication, identity resolution, and confidence scoring at scale.

• Define long‑term architecture for foundational data platforms.
• Lead complex, multi‑quarter initiatives such as platform migrations, major refactors, and new data foundations.
• Balance data correctness, freshness, cost, and performance in real‑world production systems.

• Own SLAs/SLOs for data freshness, accuracy, and completeness.
• Design data quality frameworks, reconciliation mechanisms, and observability for critical pipelines.
• Lead root‑cause analysis and long term fixes for production issues.

• Partner with Product, Analytics, Data Science, Platform, and GTM teams to translate business needs into scalable data solutions.
• Act as a technical point of contact for third party data integrations and vendors.

• Mentor senior engineers and influence technical standards across the org.
• Lead by example in design reviews, operational ownership, and incident response.
• Help shape engineering best practices around scalability, reliability, and maintainability.
• Leverage generative AI and AI coding tools to accelerate developer productivity, engineering workflows, and automation of repetitive tasks

• 10+ years of experience building backend or data intensive systems.
• Proven ownership of mission critical data platforms in production.
• Experience operating at Senior or Staff engineer scope.
• Understanding of AI-native software development practices, including automated code generation, AI-driven testing, and human-in-the-loop review systems
• Proven ability to adopt and drive modern engineering paradigms, particularly integrating AI into development workflows to improve productivity, quality, and delivery speed

• Strong programming skills in Python and SQL.
• Deep experience with big‑data and streaming systems such as Spark, Kafka, Flink, Hive, Trino/Presto.
• Solid understanding of distributed systems, data consistency, and fault tolerance.
• Hands‑on experience with AWS based data infrastructure.

• Comfortable working in ambiguity and making high impact technical decisions.
• Strong intuition for data modeling, system design, and long term maintainability.
• Ability to influence teams without formal authority.

• Experience using AI tools (e.g., Copilot, ChatGPT, Cursor) to improve productivity in design, coding, and debugging.
• Strong judgment on validating correctness and performance.

• Experience with company or people data, identity graphs, or enrichment pipelines.
• Exposure to data privacy, compliance, or governance at scale.
• Experience supporting AI/ML driven product features.

The systems you build will directly impact:

• Product accuracy and customer trust
• GTM targeting and revenue outcomes
• The scalability of 6sense’s AI‑driven platform

• Own and evolve large scale, business critical data platforms that power 6sense’s AI‑driven products.