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, Architecting scalable systems, AI-augmented development, Mentorship. Owning the entire lifecycle of a feature. Understanding customer pains”
What You'll Achieve.
Reliability and simplicity of the systems you build to power a global platform; Impact over effort: customers see results, not the hours behind them; Investing energy where it counts most; Delivering a 7-star experience; Making us a great place to work
Industry & Context.
Solving complex problems without unnecessary friction; De-risks ambiguous projects through spikes and prototyping; Proactively managing technical debt
Must be based within commuting distance of Barcelona hub, Relocation assistance available for certain roles, Resume to be submitted in English
What They're Looking For.
Must Have
Experience with AI-augmented workflows, Experience with agentic workflows, Experience developing custom agentic skills to extend AI capabilities, Experience utilizing AI-powered code reviews
Nice to Have
Interest in modern AI-augmented workflows
What You'll Do.
Owning the entire lifecycle of a feature
Understanding customer pains
Contributing to design documents
Migrating tax determination to a third-party integration
Rearchitecting invoice issuance for async processing at scale
Automating invoice collection process
Improving end-to-end billing experience
Defining and upholding engineering excellence
Establishing frontend architecture patterns
Engineering sophisticated backend solutions
Leading observability and SRE
Managing incident responses
Conducting blameless post-mortems
Overseeing operational security
Managing dependency risk
Shaping the bigger picture
Refining what to build and why
Contributing to quarterly goals and long-term vision
Architecting for today and tomorrow
Writing design documents
Guardian of team's technical direction
Spotting areas of investment
Proactively managing technical debt
Leading cross-squad initiatives
Contributing to engineering guilds
Pairing with architects on solution discovery
Supporting less experienced colleagues
Providing thoughtful feedback during reviews
Modelling great engineering
Helping Engineering Managers understand team's technical growth needs
How You'll Work.
Team & Collaboration
Joining a cross-functional squad; Having a genuine say in what gets built; Working as one team; Communicating complex ideas across multiple teams; Proactively identifying who needs to be involved; Driving alignment across the broader organisation; Coordinating multi-team deliverables; Aligning stakeholders to resolve technical blockers across the organization
Communication Scope
Communicating complex ideas across multiple teams
Process & Methodology
Translates complex business goals into technical de-risks 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
Applying for this Senior Software Engineer - Billing (VAT & Invoicing) role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
How to Apply on Ashby
- Ashby is a fast modern ATS — most applications take under 3 minutes.
- The resume parser is strong; verify parsed experience dates and job titles.
- Custom screening questions are often scored algorithmically — answer completely.
- Location field affects geo-based screening; use your actual metro area.
ANONYMOUS · UNFILTERED
What do employees actually say about Perk?
Real rants from real employees. Read before you apply.