Perk

SaaS

SeniorSoftwareEngineer-Billing(VAT&Invoicing)

Edinburgh, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Software Engineer - Billing (VAT & Invoicing) at Perk. Skills: Billing domain expertise, System architecture, Backend development, Frontend development, 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.

See how technical decisions move the needle for customers daily; Engineering excellence measured by reliability and simplicity of systems; Impact over effort: customers see results, not hours behind them; Invest energy where it counts most

Industry & Context.

SaaS
Problems you'll solve

Solve complex problems without unnecessary friction; Translate complex business goals into technical de-risks; Identify areas of investment; Manage technical debt; Resolve technical blockers

Eligibility Requirements

Based within commuting distance of Edinburgh hub, Relocation assistance available from anywhere in the world, Resume in English

What They're Looking For.

Must Have

Experience with Python, Experience with React, Knowledge of PostgreSQL, Experience with AWS (EC2, S3, Lambda), Experience with Terraform, Experience with Docker, Experience with Java, Experience with Spring Boot, Experience with Kafka, Experience with Redis, Experience with CI/CD optimizations, Experience with testing strategies, Experience with coding standards, Experience with state management, Experience with performance budgets, Experience with E2E/Cypress, Experience with API versioning, Experience with caching strategies, Experience with complex data migration plans, Experience with observability, Experience with SRE, Experience with defining SLOs, Experience with incident responses, Experience with blameless post-mortems, Experience with operational security, Experience with secrets hygiene, Experience with dependency risk management, Experience with AI-augmented workflows, Experience with agentic workflows, Experience with developing custom agentic skills, Experience with AI-powered code reviews

Nice to Have

Knowledge of Kubernetes, 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

Participate in understanding customer pains

Contribute to design documents

Migrating tax determination to a third-party integration

Rearchitecting invoice issuance for async processing at scale

Automating invoice collection into a fully self-serve service

Product-facing frontend work to improve the end-to-end billing experience

Shape the bigger picture and 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

Proactively manage technical debt

Coordinate multi-team deliverables

Resolve technical blockers across the organization

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; Communicate complex ideas across multiple teams; Proactively identify who needs to be involved; Drive alignment across the broader organisation; Coordinate cross-squad initiatives; Contribute to engineering guilds; Pair with architects on solution discovery; Work as one team; Team's success is your success

Communication Scope

Communicate complex ideas across multiple teams

Process & Methodology

De-risk ambiguous projects through spikes and prototyping, Manage incident responses

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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