8th Light

Principal Software Engineer (Hybrid)

8th Light
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9 hours ago
London, United KingdomStaff+

Responsibilities

  • Drive platform engineering strategy and delivery across client engagements.
  • Design scalable, modular, maintainable systems and provide architecture guidance on scalability, security, reliability, performance, and observability.
  • Collaborate on ML lifecycle systems spanning data ingestion, preprocessing, model deployment, integration, and performance monitoring.
  • Advise clients and executives on architecture, platform evolution, technical roadmaps, and product or business outcomes.
  • Build trust with clients, lead technical deep-dives and strategy sessions, and communicate documented decisions and action items.
  • Coach client engineering teams, transfer knowledge, mentor colleagues, and improve engineering practices.
  • Lead modernisation, replatforming, and production delivery efforts across varied languages, frameworks, stacks, and industries.
  • Partner with account teams on opportunity identification, stakeholder relationships, pre-sales scope shaping, and planning.
  • Facilitate retrospectives, feedback conversations, workshops, and initiatives that improve team and project outcomes.
  • Identify and resolve blockers while balancing technical tradeoffs and delivery deadlines.

Requirements

  • Typically 10+ years of repeated success across a variety of software projects and consulting engagements.
  • Experience building and shipping production-grade platforms, reusable software foundations, infrastructure, tools, and workflows.
  • Experience taking AI and agentic systems from prototype to production, including infrastructure, authentication, and observability.
  • Experience leading software delivery with Java, C#/.NET, Python, TypeScript, JavaScript, React, Go, Ruby, Scala, R, and SQL, or comparable technologies.
  • Experience building or integrating AI/ML features such as recommendation engines, NLP, computer vision, predictive analytics, RAG pipelines, and agents.
  • Experience with modernisation, replatforming, architecture-level problem solving, and scalable system design.
  • Demonstrated ability to lead ambiguous initiatives, influence technical and non-technical stakeholders, and advise CTOs or executives.
  • Experience mentoring and coaching engineering teams, facilitating alignment, and improving team practices.
  • Strong understanding of testing strategies, observability, fault tolerance, secure engineering practices, and architectural tradeoffs.
  • Preferred experience with platform engineering, internal developer platforms, 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; consulting engagements generally do not require 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.
  • Opportunity to work with varied clients, mentor teams, lead workshops, and contribute to a collaborative learning culture.

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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