8th Light

Principal Software Engineer (Hybrid)

8th Light
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1 day ago
London, United KingdomStaff+

Responsibilities

  • Build and lead delivery of reusable platforms, internal developer platforms, infrastructure, and production-grade software.
  • Lead platform strategy, architecture, modernization, replatforming, and scalable system design for client engagements.
  • Develop and integrate AI/ML and agentic systems across the ML lifecycle, including data ingestion, preprocessing, deployment, integration, and monitoring.
  • Advise clients on architecture, scalability, reliability, performance, security, observability, and platform evolution.
  • Coach client engineering teams, transfer knowledge, mentor colleagues, and improve engineering practices.
  • Facilitate retrospectives, strategy sessions, technical deep-dives, feedback conversations, and stakeholder alignment.
  • Design and manage high-level technical roadmaps and document architectural decisions and outcomes.
  • Influence client CTOs and executives while partnering with account teams on opportunity identification and pre-sales scope shaping.
  • Contribute to internal workshops, hiring processes, company culture, and the wider technology community.

Requirements

  • Typically 10+ years of repeated success across a variety of software projects and consulting engagements.
  • Demonstrated expertise leading ambiguous initiatives, architecting scalable solutions, and delivering production-grade platforms and software.
  • Experience with multiple language paradigms, stacks, ecosystems, and client industries.
  • Experience taking AI and agentic systems from prototype to production, including infrastructure, authentication, and observability.
  • Experience building or integrating AI/ML features such as recommendation engines, NLP, computer vision, predictive analytics, RAG pipelines, and agents.
  • Experience with modernization, replatforming, modular architecture, testing strategies, observability, fault tolerance, and secure engineering practices.
  • Strong stakeholder communication, consulting, technical leadership, mentorship, and product-thinking capabilities.
  • Preferred experience in platform engineering, data engineering with Databricks, production agentic systems, vector search, LangChain, LlamaIndex, CrewAI, AutoGen, n8n, DevSecOps, DevOps, MLOps, and infrastructure as code.

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

Categories

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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