[Remote] Sr. Data & AI Application Engineer

Note: The job is a remote job and is open to candidates in USA. Affinity Solutions is the leading consumer purchase insights company, providing a comprehensive view of consumer spending through proprietary AI technology. They are seeking a Sr. Data & AI Application Engineer to drive the architecture and development of a unified platform for insights and audience building, utilizing large-scale data and AI.ResponsibilitiesLead 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 workflowsSkillsBS 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)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 analyticsBenefitsBenefits 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 visionCompany paid holidaysWellness time offOther wellness benefitsEmployee discountsEmployer paid life insuranceOption to enroll into an employer-matched 401K PlanUnlimited vacation days, available starting 90 days from your hire date as a team memberCompany OverviewAffinity Solutions offers technology, analytics, data processing, and business services for customers. It was founded in 2005, and is headquartered in New York, New York, USA, with a workforce of 51-200 employees. Its website is https://www.affinity.solutions.Company H1B SponsorshipAffinity Solutions has a track record of offering H1B sponsorships, with 4 in 2026, 11 in 2025, 22 in 2024, 6 in 2023, 6 in 2022, 9 in 2021, 4 in 2020. Please note that this does not guarantee sponsorship for this specific role.