Perk
SaaS
SeniorSoftwareEngineer-Billing(VAT&Invoicing)
Neural analysis suggests this role is
optimal for Senior candidates.
“Senior Software Engineer - Billing (VAT & Invoicing) at Perk. Skills: Billing domain ownership, System architecture, AI-driven development, Mentorship, Cross-functional leadership. Own the problem and the solution. Take responsibility for the entire lifecycle of a feature”
What You'll Achieve.
Deliver a 7-star experience; Impactful work for customers; Reliability and simplicity of systems; Achieve company goals; Deliver impact; Invest energy where it counts most; Raise the bar for everyone around you
Industry & Context.
Solve complex problems without unnecessary friction; Architect scalable, evolvable systems and data models that account for performance, failure isolation, and long-term maintenance; Define and uphold engineering excellence; Establish frontend architecture patterns; Engineer sophisticated backend solutions; Lead observability and SRE; Oversee operational security; Level up the engineering organization
Based within commuting distance of London hub, Relocation assistance available from anywhere in the world for certain roles, Resume in English, Updated portfolio and/or resume submission
What They're Looking For.
Must Have
Experience with Python, Familiarity with React, Knowledge of PostgreSQL, Experience with AWS (EC2, S3, Lambda), Experience with Terraform, Experience with Docker, Strong Java background, Experience with Spring Boot, Familiarity with Kafka, Familiarity with Redis, Experience with modern AI-augmented workflows, Experience with agentic workflows, Experience developing custom agentic skills, Experience utilizing AI-powered code reviews
Nice to Have
Kubernetes a plus, Experience with AI tools in coding interviews
What You'll Do.
Own the problem and the solution
Take responsibility for the entire lifecycle of a feature
Understand customer pains
Contribute to design documents
Refine what to build and why
Contribute to squad's quarterly goals and long-term vision
Architect for today and tomorrow
Write design documents
Guardian of team's technical direction
Spotting areas of investment
Proactively managing technical debt
Ensure focus on impactful work
Coordinate multi-team deliverables
Resolve technical blockers
Support less experienced colleagues
Provide thoughtful feedback during reviews
Model great engineering
Help Engineering Managers understand team's technical growth needs
Lift the overall engineering standard
How You'll Work.
Team & Collaboration
Join a cross-functional squad; Have a genuine say in what gets built; Operate comfortably beyond immediate team; Communicate complex ideas across multiple teams; Proactively identify who needs to be involved; Drive alignment across the broader organisation; Coordinate a cross-squad initiative; Contribute to engineering guilds; Pairing with architects on solution discovery; Work as one team
Communication Scope
Communicate complex ideas across multiple teams
Process & Methodology
De-risk ambiguous projects through spikes and prototyping
Full Job Description
About Us Perk (formerly TravelPerk) is the intelligent platform for travel and spend management. Built to tackle the time-consuming, manual work that gets in the way of real work, our tools automate everything from travel bookings to expenses, invoice processing, and more. By eliminating this shadow work that wastes hours, erodes morale, and saps innovation, we’re on a mission to power real work, with real impact. We’re trusted by more than 10,000 companies worldwide, including Wise, On Running, Breitling, and Fabletics, and we’re tackling the 7 hours of lost productivity per employee each week, a $1.7 trillion problem http://www.perk.com/shadow-work-report. Founded in 2015, Perk has grown into a global company of more than 1,800 people across 12 offices globally, with headquarters in London and Boston. We combine innovation, control, and simplicity to transform how businesses work and how people feel at work. At Perk, we’re driven by our values, like being an owner, delivering a 7-star experience, and working as one team. We value curiosity, purpose, and mindset, not just knowledge, to unlock the power in your potential. Our talent team brings together leading minds from the travel and SaaS industries, representing over 70 countries. If you’re excited about having a real impact and shaping how millions of people experience work, we’d love you on the team. Visit www.perk.com http://www.perk.com to learn more. BILLING TEAM The billing team owns tax determination, invoice issuance, invoice collection, and deferred payments. Right now the team is in the middle of some of its most significant technical work: migrating tax determination to a third-party integration, rearchitecting invoice issuance for async processing at scale, and automating a previously manual invoice collection process into a fully self-serve service, with AI at its core. There's also a growing stream of product-facing, frontend work as we look to improve the end-to-end billing experience. If you want
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