Principal Software Engineer Job at Collinson (London)

Principal Software Engineer

Collinson

Location:
United Kingdom , London

Category:
IT - Software Development

Contract Type:
Contract work

Salary:

Not provided

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Job Description:

At Collinson, we don’t just build technology — we power the experiences behind some of the world’s most recognised travel, financial services, and retail brands. Our solutions help global brands acquire, engage, and retain millions of customers worldwide. Our flagship product is Priority Pass, the world’s leading airport experiences programme, trusted by travellers across more than 170 countries. Key clients include Mastercard, American Express, Cathay Pacific, British Airways, LATAM, Flying Blue, Accor, EasyJet, HSBC, Chase, HDFC. Our mission is focused on doing good beyond profit, which for us means we seek out opportunities for our people to share in our success and that we give back to the communities and people within which we work. Never short of ambition, the success of our business is delivered through the diverse and talented team of over 2,200 global colleagues. We are now looking for a visionary Principal Engineer to help define the next generation of our platform.

Job Responsibility:

Defining the architectural vision for our API ecosystem
Leading the design and development of scalable, cloud-native distributed systems
Building high-throughput event-driven services using Kafka
Driving engineering excellence across security, observability, performance, and maintainability
Mentoring and coaching engineers and technical leaders across multiple squads
Collaborating closely with Product, Delivery, and Engineering leadership to shape strategic technical decisions
Championing modern development practices including TDD, CI/CD, Infrastructure as Code, and automated testing
Exploring and embedding AI-powered engineering capabilities into our workflows and platform

Requirements:

Proven experience architecting large-scale distributed systems in the cloud
Deep expertise in APIs, event-driven architectures, and containerised applications
Strong knowledge of AWS and modern DevOps practices
Experience leading engineering teams and influencing technical direction across squads
A passion for software craftsmanship, clean architecture, and scalable design
A mentoring mindset and a collaborative leadership style
Curiosity around AI and emerging engineering technologies
Experience with Salesforce or enterprise CRM ecosystems is a strong advantage.

Nice to have:

Experience with Salesforce or enterprise CRM ecosystems is a strong advantage.

What we offer:

Flexible and hybrid working options
Work from anywhere – 8 weeks a year
Generous parental leave and family-friendly policies
Career development, mentorship, and training
A supportive, inclusive culture with employee resource groups and diversity initiatives.

Additional Information:

Job Posted:
May 05, 2026

Work Type:

Hybrid work

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