8th Light

Principal Software Engineer (Hybrid)

8th Light
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9 hours ago
London, United KingdomStaff+

Responsibilities

  • Build trust with clients and lead platform engineering strategy and delivery across diverse engagements.
  • Architect scalable, maintainable, secure, reliable, observable, and high-performing systems.
  • Design and manage technical roadmaps while connecting long-term platform vision to delivered outcomes.
  • Collaborate across the full ML lifecycle, including data ingestion, preprocessing, model deployment, integration, and performance monitoring.
  • Advise client leaders on architecture, platform evolution, technology tradeoffs, and product and business outcomes.
  • Coach client engineering teams, transfer knowledge, mentor colleagues, and improve engineering practices.
  • Facilitate retrospectives, strategy sessions, technical deep-dives, feedback conversations, and stakeholder alignment.
  • Influence CTOs and executives and plan technical work across broader client organizations.
  • Partner with account teams on opportunity identification, stakeholder relationships, and pre-sales scope shaping.
  • Contribute to internal workshops, hiring processes, technical community activities, and company culture.

Requirements

  • Typically 10+ years of repeated success across a variety of software projects and consulting engagements.
  • Demonstrated ability to build and ship production-grade platforms, reusable software foundations, internal tools, infrastructure, and workflows.
  • Experience taking AI and agentic systems from prototype to production, including infrastructure, authentication, and observability.
  • Experience leading production software delivery across multiple languages, frameworks, stacks, ecosystems, and client industries.
  • Experience building or integrating AI/ML features such as recommendation engines, NLP, computer vision, predictive analytics, RAG pipelines, and agents.
  • Experience leading modernization and replatforming efforts and solving architecture-level challenges involving scalability, security, reliability, performance, maintainability, and observability.
  • Strong consulting, product-thinking, stakeholder-management, communication, mentorship, and technical leadership skills.
  • Preferred experience in platform engineering, data engineering, production agentic systems, DevSecOps, DevOps, MLOps, and infrastructure as code.
  • Preferred experience with Databricks, RAG pipelines, vector search, LangChain, LlamaIndex, CrewAI, AutoGen, and n8n.

Benefits

  • Hybrid London arrangement requiring at least one day per week in the Waterloo office, with consulting engagements generally not requiring travel.
  • Unlimited access to books, courses, and expert-led training through the O'Reilly learning platform.
  • Annual financial stipend and dedicated time for learning and development.
  • Coworking support for the global team.
  • 12 weeks of new parent leave for eligible employees.

Tech Stack

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8th Light

About 8th Light

51-200 employees

8th Light is an employee-owned software consultancy that provides product strategy, design, and engineering, with a focus on AI-enabled systems and platform modernization. It partners with enterprises in finance, education, retail, real estate, healthcare, and consumer markets through project-based engagements and embedded teams. Founded in 2006 and headquartered in Chicago, it is privately held with additional offices in London, Los Angeles, New York, and Austin.

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