Senior Software Engineer — Build the Travel API at Scale

United States Digital Space LLC; Greater London; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Equity

Private Healthcare

Travel allowance

Sabbatical programme

Office in Shoreditch

Job summary

Duffel in London is hiring a Senior Software Engineer to shape the product and the team building it. This hands-on role focuses on building a world-class API for travel, collaborating across squads, and shipping scalable software in a hybrid setup near Shoreditch.

You'll design systems, mentor teammates, and balance technical ambition with business impact. We offer equity, private healthcare, a travel allowance, sabbatical options, and an office in Shoreditch for regular team socials.

Qualifications

• Experience designing APIs at scale.
• Ability to turn loosely-defined problems into clear technical plans.
• Strong systems thinking and impact awareness.

Responsibilities

• Owns API design and implementation for travel platform.
• Shapes technical decisions across teams and sets quality standards.
• Mentors engineers and helps others reach high performance.

Skills

API design

Distributed systems

Production code

Mentoring

Communication

Tools

Elixir

Phoenix

Kubernetes

Google Cloud Platform

Job description

Duffel in London is hiring a Senior Software Engineer to shape the product and the team building it. This hands-on role focuses on building a world-class API for travel, collaborating across squads, and shipping scalable software in a hybrid setup near Shoreditch.

You'll design systems, mentor teammates, and balance technical ambition with business impact. We offer equity, private healthcare, a travel allowance, sabbatical options, and an office in Shoreditch for regular team socials.