Note: The job is a remote job and is open to candidates in USA. PlayOn Sports is looking for a Senior Software Engineer to develop AI-powered, data-driven services and features for web experiences used by millions of high school sports fans. This role involves strong backend delivery ownership and hands-on work on data, APIs, and LLM integrations to enhance sports data accessibility and performance.

Responsibilities

• Ship AI-powered, data-driven features and experiences grounded in PlayOn’s data
• Build, maintain, and improve APIs and backend services
• Design and evolve data schemas and APIs that make our sports data accessible to both application code and LLM-driven features
• Drive technical decisions for the features you ship, and contribute to performance and operational health across the application
• Establish eval and observability practices for AI features so regressions are caught in CI rather than by users
• Develop modern backend services using C# .NET, Python, SQL, AWS, and Snowflake
• Build LLM-powered features against PlayOn’s data, connecting models to Postgres, Snowflake, and internal APIs via retrieval, tool use, and semantic search
• Model and evolve data schemas so they serve both traditional APIs and AI-driven access patterns
• Own features end-to-end: architecture and design, implementation, testing, observability, and operational readiness
• Plan and execute backend migrations, platform upgrades, and modernization initiatives with minimal risk
• Optimize and monitor PostgreSQL workloads, including query performance, indexing, and database health trends
• Define and maintain eval suites for production AI features (retrieval quality, answer accuracy, and regression detection) wired into CI

Skills

• 5+ years of professional software engineering experience, including backend web application development
• Experience building production features backed by LLMs, such as RAG, semantic/vector search, or tool use / function calling
• Hands-on experience with cloud data warehouses (Snowflake or similar)
• Strong expertise in C# .NET, Python, SQL, REST API design, and data modeling
• Working knowledge of AWS for deploying and operating backend services
• Experience building eval frameworks for AI systems, including golden sets, LLM-as-judge, and regression detection, applied to production AI features and/or agentic dev workflows
• Solid PostgreSQL experience, including schema design, query tuning, and modeling data for both transactional and analytical/AI access patterns
• Experience with CI/CD pipelines, automated testing, and Git/GitHub workflows
• Ability to work effectively in a collaborative, agile, team-oriented environment
• Bachelor's in Computer Science or equivalent experience preferred
• Frontend development experience
• Proficiency with load testing, observability, and reliability engineering practices
• Experience working on high-traffic public-facing websites
• Experience with vector databases or vector search
• Experience exposing data and tools to LLMs via function calling, MCP, or agent frameworks
• Knowledge of or interest in sports, sports management, and statistics

Benefits

• Multiple medical insurance plans to choose from
• Dental, vision life and disability insurance
• Employee Emergency Fund
• Company equity (stock options)
• Open PTO policy
• 401K plan with company match
• Hybrid/flexible work environment
• Must be a full-time employee to participate in the company’s employee health benefit plan; Part-time employees and interns are not eligible to participate

Company Overview