Principal Fullstack Engineer at FlightStory | England, GB | Rezi

Principal Fullstack Engineer at FlightStory

Principal Fullstack Engineer

FlightStory · England, GB

1 months ago

Principal Fullstack Engineer

FlightStory · England, GB

2 months ago
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About the Role

The most senior individual contributor engineering seat at Steven.com. You set the technical bar for the whole engineering team, own architecture for the ITO's hardest and highest-stakes systems, and make the calls that don't have a committee to hide behind. Reporting to the CITO and partnering closely with the VP of Engineering & Applied AI, you own technical depth while they own execution and people. This is a founding team role where your contributions in year one will shape the product for years to come.

Responsibilities

  • Own the architecture of Steven.com's most complex systems, from design through production and long-term evolution.
  • Set the engineering standards, patterns, and abstractions the rest of the team builds on.
  • Architect the AI-native core of the product: LLM-powered workflows, intelligent pipelines, and agentic systems.
  • Make the final call on high-stakes design decisions and catch systemic risk before it becomes debt or downtime.
  • Mentor senior and junior engineers, raise the bar through code review and architectural conversation.
  • Turn ambiguous product bets into concrete technical plans with clear tradeoffs, working directly with CITO, VP Eng, and Product.

Requirements

  • Track record of designing and shipping complex, large-scale distributed systems in production.
  • Deep full-stack proficiency.
  • Real experience architecting AI/ML systems, LLM applications, or intelligent pipelines at production scale.
  • Comfortable reasoning across multiple levels of abstraction, from API design to infrastructure to product.
  • Sharp written communication and documentation skills.
  • Founding engineer, staff engineer, or technical lead at a startup or high-growth company.
  • CS or ML research background with production research experience.
  • Published research, open source work, conference talks, or other visible engineering community contribution.

Skills

  • TypeScript
  • React
  • Node.js
  • Python
  • Google Cloud/AWS
  • AI/ML systems
  • LLM applications
  • Intelligent pipelines

Location

  • LONDON

Work Type

  • Full-time

Experience Level

  • Principal Engineer
  • Senior Engineer
  • Staff Engineer
  • Technical Lead

Education Level

  • CS or ML research background

About the Company

  • Steven.com is building the operating system for the creator economy, forecast to pass a trillion dollars by the early 2030's.
  • This industry is currently held back by fragmented tools and a lack of professional infrastructure.
  • Steven.com is the unlock. We are the end-to-end Operating System designed to scale what is irreplaceably human.
  • We have built proprietary technology and obsessed teams to identify and scale the highest-potential creators across our core pillars: Creator Media, Creator Community, Creator Products.
  • Powered by Creator Tech & Intelligence: A proprietary data and technology suite that fuels smarter decisions and drives innovation across the entire flywheel.
  • Steven.com's Innovation and Technology Organisation (ITO) is building proprietary AI infrastructure, developing consumer and enterprise digital products, and creating the data and intelligence layer that drives smarter decisions across the business.
  • Each pillar feeds the next, creating a flywheel that compounds over time and bets on human creation at its core.