Senior Software Engineer - Billing (VAT & Invoicing)

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. 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 to learn more. ## Desired skills and experience

• Product Leadership: Translates complex business goals into technical roadmaps; de-risks ambiguous projects through spikes and prototyping. - scalable, evolvable systems and data models that account for performance, failure isolation, and long-term maintenance. - and engineering excellence, including CI/CD optimizations, testing strategies, and coding standards across the stack. - frontend architecture patterns, including state management, performance budgets, and comprehensive testing (e.g., E2E/Cypress). - sophisticated backend solutions involving API versioning, caching strategies, and complex data migration plans. - observability and SRE practices; defines SLOs, manages incident responses, and conducts blameless post-mortems. - operational security, including secrets hygiene and dependency risk management, to ensure a hardened production environment. - the engineering organization through active mentorship, leading design reviews, and influencing the product roadmap with technical data. - multi-team deliverables and aligns stakeholders to resolve technical blockers across the organization. - Experience with—or a strong interest in—modern AI-augmented workflows. This includes leveraging agentic workflows, developing custom agentic skills to extend AI capabilities, utilizing AI-powered code reviews...