Staff Software Engineer

Our Mission: Our mission is to multiply what matters: growth, retention, and efficiency. We envision a future where companies, teams and people reach their full potential. Our People: 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. Role Overview We’re looking for a Staff Software Engineer to serve as a technical pillar across our engineering teams. This role is ideal for a highly experienced backend engineer who thrives on solving hard problems, mentoring others, and guiding architecture across multiple domains. You’ll be a multiplier, operating independently, shaping technical direction, and partnering with engineers and product teams to raise the bar across the organization. You’ll work across squads to improve system performance, reliability, and scalability, while owning high-impact projects that support our Advertising platform. Whether it’s unblocking performance bottlenecks, leading design for new backend services, or reducing tech debt, your contributions will have a far-reaching impact. This is a high-impact role where you will not only write mission-critical code but also provide the AI-driven roadmap to help our team automate optimizations and anomaly detection within our data pipelines. Core Responsibilities Own and lead design for major backend systems across Ads, focusing on performance, scalability, and reliability. Serve as the subject matter expert for Python Django. You will optimize application performance, focusing on concurrency, memory management, and efficient integration with our data layer. Architect and optimize large scale data workflows for Ads. You will be expected to tune complex queries in Hive, Flink, or Trino to reduce latency and cost while maintaining data integrity. Actively profile our stack to identify bottlenecks. You should be comfortable moving between high-level architectural planning and low-level query optimization. Guide the engineering team in leveraging AI and Machine Learning for predictive analytics, automated QA of data streams, and enhancing our internal decision-making engines. Collaborate with multiple teams to address cross team concerns (e.g., shared libraries, infra patterns, tech debt, security) Tackle escalated production issues / incidents by providing quick remediations Raise the engineering bar through elite code review, technical RFCs and hands on guidance for senior and mid-level engineers. Work with EMs and PMs to shape technical roadmap and support long-term platform health. Technical Requirements 10+ years in backend engineering with a proven track record of scaling systems in Ad-Tech, Fintech or High-Scale SaaS. Deep expertise in building high concurrency, asynchronous services. You know how to scale Django beyond standard patterns. Strong experience with distributed systems (e.g. Flink, Spark, Hive or SingleStore). You are an expert at optimizing distributed joins and partitioned datasets. Advanced SQL skills; you can dissect an execution plan and optimize complex analytical queries for both performance and cloud cost. Experience managing “Sync vs Async” data flows and ensuring consistency across disparate data stores Experience with containerization technologies such as Docker and Kubernetes. Familiarity with CI/CD pipelines and modern DevOps practices. Strong communication skills with the ability to explain complex technical concepts to non-technical stakeholders is a must. Proven leadership experience, including mentoring engineers and leading technical initiatives. Ideal Candidat ... (truncated, view full listing at source)