Job Description
Role summary
At Xephyr we help organisations scale results, not headcount, with AI and automation across AI Readiness and AI Agents. We’re looking for a Senior or emerging Lead Data Scientist with strong AI consulting instincts to join our AI Readiness team. This is a hands-on, client-facing role for someone equally comfortable in a code editor or in front of a client executive.
You’ll act as a trusted technical advisor on client engagements, lead the delivery of AI Readiness projects, shape AI strategies and run GenAI proof-of-concepts through to production. You’ll own project and stakeholder management on engagements you lead, and play a player-coach role internally, mentoring mid and junior data scientists. There are no direct reports at this stage; the role is a clear stepping stone toward Lead.
Responsibilities and duties
Act as a trusted technical advisor to clients, including senior and C-suite stakeholders, across AI Readiness and delivery engagements.
Lead the delivery of AI Readiness Audits, helping clients assess their data, tooling, capability and governance posture.
Own end-to-end project and stakeholder management on engagements, including scoping, planning, timelines, risk and status reporting.
Own solution architecture for ML and Generative AI work, including model selection, tool choice and production readiness.
Design, build and deploy GenAI and ML solutions, including RAG, agentic systems, evaluation pipelines and guardrails alongside the engineering team.
Ensure solutions are production-ready with appropriate LLMOps and MLOps practices: monitoring, evaluation, cost and latency trade-offs.
Translate ambiguous client problems into scoped opportunities and contribute to estimates, proposals and statements of work.
Support the sales motion through discovery sessions, workshops and technical pitches.
Mentor mid and junior data scientists through code reviews, pairing, design reviews and knowledge sharing.
Feed insights, patterns and reusable components from client work back into Xephyr’s GenAI product roadmap.
Ideal candidate
5 to 10 years in data science, ML or applied AI, with a track record of shipping solutions into production.
Hands-on production GenAI experience: RAG, agents, tool use, evaluations and guardrails.
Fluent with the modern GenAI stack (e.g. LangGraph or equivalent, LlamaIndex, vector DBs such as pgvector/Pinecone/Weaviate, evals frameworks like Ragas, Braintrust or LangSmith).
Solid foundations in classical ML, statistics, experimental design and causal inference.
Strong Python and SQL; comfortable with Git, CI/CD, testing and at least one major cloud AI platform (Snowflake, Bedrock, Vertex, Azure AI Foundry or Databricks).
Working knowledge of modern data platforms, pipelines, warehousing, governance and quality.
Demonstrated success working directly with clients; consulting or professional services background is a strong plus.
Confident running engagements end-to-end, managing scope, timelines and stakeholder expectations.
Clear communicator who can translate complex concepts for both technical teams and senior business stakeholders.
Thrives in fast-moving environments with shifting priorities, evolving toolkits and volatile POCs.
Tertiary qualifications in computer science, engineering, mathematics, statistics, physics or a related quantitative discipline. Postgraduate study in ML, AI or data science is a plus but not required.
Nice to haves or eager to learn on the job
Experience working in a startup or scaleup technology business.
Exposure to retail, marketing analytics or customer data platforms.
Financial services industry experience.
Responsible AI literacy: familiarity with frameworks such as the EU AI Act, Australia’s AI Safety Standard or the NIST AI RMF.
Experience supporting pre-sales activity, including writing proposals and SOWs.
Public contributions: talks, blogs or open-source work.
Our culture and core values
We’re building a culture where smart, kind, driven people can do their best work. Our values guide everything we do: human progress, iterate quickly, further together, be dependable, and have fun. If that sounds like a team you want to help shape, we’d love to meet you.
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