Senior Backend Engineer (Python)

SplitMetrics SplitMetrics is a global software company offering an ecosystem of products and services that serve as a growth engine for top mobile-first businesses worldwide. Our ecosystem includes: - SplitMetrics Acquire, a platform for automating and optimizing Apple Ads. - SplitMetrics Agency, a full-service mobile marketing agency staffed by top experts. - SplitMetrics Optimize, an A/B testing platform recognized as the ASO Tool of the Year. - App Radar by SplitMetrics an ASO platform with advanced keyword and competitor insights. Why SplitMetrics? - For almost 10 years, we've been at the forefront of the mobile marketing industry, providing an ecosystem of market-leading technologies. - An Apple Ads Partner, SplitMetrics is the 1st company to build the Apple Ads management platform. - Working with top mobile companies and brands globally: Skyscanner, Glovo, Flo, Babbel, Wooga and many more. - Generating an impressive transaction volume, with over $1 billion in ad spend flowing through our ecosystem. - Integrated AI into our strategic approach since 2023. - Effectively collaborate across 20+ countries with a remote-first and supportive culture. We’re looking for a Senior Backend Engineer (Python) who will join our team. What will you do: - Design and build backend services in Python (FastMCP, FastAPI) - Implement MCP tool and agent-ready workflows (tool schemas, orchestration) - Build async pipelines using asyncio (concurrent I/O, task orchestration, background jobs) - Integrate with LLM services: prompt engineering, structured output parsing, token/cost management - Develop RAG pipelines: embeddings, vector search, retrieval strategies, chunking - Research and prototype new approaches: evaluate models, benchmark retrieval methods, experiment with agent architectures - Design experiments, track quality metrics, turn R&D findings into production features - Develop APIs for AI agents and internal dashboards - Ensure stability, observability, and cost-efficient inference