Sr. Data & AI Application Engineer

Affinity Solutions (Affinity) is the leading consumer purchase insights company. We provide a complete view of U.S. and U.K. consumer spending, across and between brands, via exclusive access to fully permissioned data from over 100 million consumers. Our proprietary AI technology, Comet™, transforms these purchase signals into actionable insights for business and marketing leaders to drive optimal outcomes and build lasting customer relationships. Visit www.affinitysolutions.com to discover how we’re shaping the future of consumer purchase insights.About Your Role:We are hiring a Sr. Data & AI Application Engineer to drive the architecture and development of a unified platform for Insights, Audience Building, and Measurement powered by large-scale data and AI. This is a hands-on leadership role where you will own system design decisions and build production-grade applications that integrate with modern data platforms and third-party SaaS tools.Your Responsibilities:Lead front-end architecture and development using React and Next.js (Node.js)Design and implement enterprise-grade systems integrating with third-party platforms (e.g., Snowflake, ThoughtSpot)Build and manage data pipelines, Snowflake clean rooms, and semantic layersDevelop AI-powered applications, including chatbots, MCP integrations, and API-connected toolsSupport audience modeling workflows including model training, scoring, calibration, and enrichmentBuild measurement frameworks and embedded BI dashboards (e.g., ThoughtSpot)Execute custom analytics requests: segmentation, overlap analysis, behavioral profiling, and ad hoc data pullsPrototype R&D initiatives in privacy-preserving technologies and AI agent orchestrationEstablish engineering standards, contribute to code quality, and guide architectural decisionsManage development processes using Git/Bitbucket and JIRA branching workflowsYour Qualifications:BS or MS in Computer Science, Data Science, or Information Systems6–8 years of proven experience architecting and shipping an enterprise-level application with a polished UI and dependencies on embedded/third-party SaaS services3–6 years experience with Node.js, Next.js, and ReactStrong SQL expertise including CTEs, window functions, and complex aggregations3–6 years of Python experience (data processing, scripting, APIs, OOP)Experience with cloud data platforms (Snowflake, BigQuery, or Redshift)At least 3 years building REST APIs and data pipelinesFamiliarity with authentication/SSO systems (e.g., AWS Cognito)Preferred:Experience with GenAI developer tools (e.g., Copilot, Cursor, Claude Code) or agent frameworksHands-on experience with Snowflake Cortex, Snowpark, or StreamlitFamiliarity with LLM APIs (OpenAI, Anthropic Claude) and prompt patternsExperience with ML models (classification, feature engineering, calibration techniques)Knowledge of data privacy frameworks (clean rooms, differential privacy, PETs)Experience with Slack Bolt, AWS EC2, and deploying Python servicesFamiliarity with MCP servers or AI agent orchestrationExperience analyzing large-scale datasets (100M+ rows)Background in AdTech, MarTech, audience segmentation, or marketing analyticsTech Stack:Snowflake, Snowpark, Snowflake Cortex, Streamlit, Python, SQL, ThoughtSpot, Next.js, React, Node.js, AWS Cognito, Claude API, MCP, Slack Bolt, AWS EC2, Bitbucket, JIRA, GenAI toolsSalary Range: $165,000 – $180,000Office Hours: 9am – 5:30pmBenefits for full-time employees of Affinity Solutions begin on the first of the month following your date of hire with a generous employer contribution for medical, dental, and vision. In addition to company paid holidays, wellness time off, other wellness benefits, and employee discounts, you will also get employer paid life insurance and have the option to enroll into an employer-matched 401K Plan. We strongly encourage work/life balance by providing unlimited vacation days, available starting 90 days from your hire date as a team member.