Software Engineer - Financial Platform

About the role

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. As a Software Engineer on the Financial Platform team, you'll help build the systems that ensure Perk's financial data is accurate, traceable, and audit-ready. You'll work on expanding the platform to support increasingly complex financial flows, with a focus on building reliable reconciliation and reporting systems that operate automatically and at scale. Rather than applying short-term fixes, you'll design and implement durable solutions that improve the integrity and transparency of our financial infrastructure. You'll also help translate and untangle complex business logic across our ERP integrations, ensuring every transaction moving through Perk is correctly represented across systems. Through thoughtful engineering practices, strong ownership, and a focus on auditability, you'll contribute to a codebase that gives Finance and the broader business confidence in the numbers behind the platform. Are you a Software Engineer Who Thrives on Real Ownership? At Perk, we know that we feel most fulfilled when we can own the problem and the solution. This means taking responsibility for the entire lifecycle of a feature, from being part in understanding what our customers pains are with our product team, design documents, coding to deployment, and measuring impact. You will see how your technical decisions move the needle for our customers daily. We prioritize autonomy and pragmatism, giving you the space to solve complex problems without unnecessary friction. Engineering excellence here is measured by the reliability and simplicity of the systems you build to power a global platform. How we work At Perk, we believe the best work happens when great people come together in small teams, with a shared sense of purpose. You'll join a cross-functional squad where you have real ownership of a piece of Perk's domains, a genuine say in what gets built, and the autonomy to make it happen. Each team to decide how to contribute to Perk's company goals. We care about impact, and we trust our people to deliver it. AI at Perk AI is embedded in how we work and what we build. On the engineering side, it spans the whole workflow: our Notion, Jira, GitHub and Slack are AI-connected so you get up to speed fast, and day-to-day it helps with specifying features, writing and reviewing code, and automated AI PR review on every pull request. When something goes wrong in production, AI surfaces context across systems quickly. We also embrace agentic coding, using AI as an active collaborator, not just a prompt-by-prompt co-pilot. We expect candidates to use AI tools in our coding interviews. The bar is understanding your code and owning what you produce. That reflects how we work every day. Some Examples of What Engineers at Perk do! Help travellers find and book the perfect trip by working on the systems that search across dozens of airlines, hotel chains, train operators, and car rental companies all at once. You'd help make sure results come back fast, prices are accurate, and the whole booking experience feels as easy as shopping online. Take the pain out of expenses and invoicing by building the tools that automatically generate invoices, handle VAT, and process expense reports for thousands of companies. You'd help finance teams stop chasing receipts and start trusting that everything adds up, without the manual work. Make payments seamless and reliable by working on the systems that handle how companies pay for travel; across different currencies, payment methods, and billing setups. You'd help ensure every transaction is smooth, accurate, and scales as the business gr

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