RELX

Principal Software Engineer/Principal AI Engineer

RELX
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2 hours ago
Tokyo, JapanStaff+

Base Salary

$115k - $192k/yr

Responsibilities

  • Own technical execution for an embedded Innovation Squad from discovery through production.
  • Build, assess, harden, and deliver AI prototypes and proofs of concept for enterprise use.
  • Design and govern reusable agentic AI patterns covering orchestration, tool use, memory, retrieval, and production guardrails.
  • Integrate AI solutions with enterprise systems through APIs and data pipelines while meeting security, compliance, and data-residency standards.
  • Create reusable patterns, reference implementations, and starter kits for adoption across functions.
  • Finalize requirements, make architecture decisions, write specifications, fix complex bugs, and design complex data models.
  • Recommend infrastructure, hosting, data-residency approaches, and budgets.
  • Plan delivery, manage scope and dependencies, remove blockers, and drive validated outcomes to production.
  • Establish baselines and measure productivity, cost, and quality outcomes from pilot through scale.
  • Serve as the primary technical contact for external resources and mentor and elevate squad engineers.
  • Evaluate emerging technologies and maintain visibility of AI pilots to identify reuse opportunities and prevent duplication.

Requirements

  • 10+ years of software engineering experience with hands-on AI system design, build, or integration and a track record of taking enterprise AI prototypes to production.
  • Bachelor’s degree in Engineering or Computer Science, or equivalent experience; an advanced degree is preferred.
  • Experience with LLM orchestration, prompt engineering, context-window management, production guardrails, MCP, tool-augmented agents, and enterprise-scale RAG.
  • Experience integrating AI into enterprise systems through APIs and data pipelines with strong security, data-governance, and data-residency practices.
  • Experience with AWS, Azure, or GCP, including managed AI/ML services.
  • Experience with relational, columnar, and vector data stores and sound architectural principles.
  • Proficiency in Python, Java, TypeScript/JavaScript, SQL, and relevant AI SDKs.
  • Experience planning and sequencing work, managing scope and dependencies, influencing technical decisions, and communicating with senior stakeholders.
  • Budget awareness and experience partnering with managed services, external resources, or staff augmentation.
  • Ability to work effectively in ambiguity and prioritize shipping validated outcomes over perfect solutions.

Benefits

  • Comprehensive pension plan.
  • Generous vacation entitlement and option for sabbatical leave.
  • Maternity, paternity, adoption, and family care leave.
  • Personal Choice budget, employee discounts, internal communities and networks, recruitment introduction reward, and global Employee Assistance Program.
  • Shared parental leave, study assistance, wellbeing initiatives, and sabbaticals.
  • Flexible working hours and work/life-balance support.
  • U.S. National Base Pay Range: $115,400-$192,300, with geographic differentials potentially applying and eligibility for an annual incentive bonus.
  • Country-specific benefits are available.
RELX

About RELX

1,001-5,000 employees
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