AdTechTalent
Engineering2 months agoOn-site

The Trade Desk

Senior Software Engineer – Janus Platform

platform servicesinternal toolingdeveloper infrastructuredistributed systemshigh availabilitylow latencyreal-timeengineeringsoftware engineeringworkflowself-service tooling

Key details

Salary

Not specified

Employment type

Full-time

Seniority

Senior

Years experience

5-10

Location

London, United Kingdom

Full job description

The Trade Desk seeks a senior software engineer to own the design, development, and evolution of Janus, an internal feature release platform. Responsibilities include building self-service tooling, ensuring platform reliability at scale, collaborating with stakeholders to translate requirements into solutions, driving architectural decisions, and promoting engineering best practices. Candidates should have experience with platform services, internal tooling, or developer infrastructure, be skilled in distributed systems, comfortable with ambiguity, user-focused, self-driven, collaborative, and willing to take measured risks.

What you'll do

  • Own the design, development, and evolution of the Janus platform end-to-end, from frontend workflows to backend infrastructure
  • Build self-service tooling that empowers cross-functional teams to act independently and reduce bottlenecks in the feature launch process
  • Ensure platform reliability at scale: high availability, high-volume traffic handling, and near real-time config propagation across hundreds of integrated services
  • Collaborate closely with stakeholders across the company to translate loosely defined requirements into reliable, well-engineered solutions
  • Drive architectural decisions and set engineering quality standards for the team
  • Contribute to a culture of good engineering practices, code quality, and knowledge sharing

Requirements

  • Experienced building platform services, internal tooling, or developer infrastructure
  • Skilled in distributed systems with understanding of availability, consistency, and low-latency data propagation trade-offs
  • Comfortable navigating ambiguity and making progress with loosely defined requirements and multiple stakeholders
  • Thoughtful about user experience, able to craft workflows intuitive to non-technical users
  • Self-driven with ownership and ability to set direction without close oversight
  • Collaborative and actively helps teammates grow and succeed
  • Willing to take measured risks and advocate for decisions even when the path isn't fully clear

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