Senior Frontend Engineer - Billing

📋 Description

• • 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.
• • Every day, tens of millions of dollars in bookings flow through systems the Billing team owns — and we're investing in the customer-facing side of that for the first time.
• • We're building out the billing experience: the pages our customers use to directly interact with billing — invoices, payments, tax details, and more. Working closely with our product designer and PM, you'll own this frontend experience end-to-end, from design handoff through to shipped, polished product.
• • You'll be joining a team in the middle of significant technical change more broadly — re-platforming core billing flows to fault-tolerant, event-driven systems, scaling AI-driven invoice processing, and building out a tax engine used across trains, hotels, flights, and cars.
• • 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.
• • 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.
• • 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.
• • As a Senior Frontend Engineer, you'll shape the bigger picture, architect for today and tomorrow, lead across boundaries, and raise the bar for everyone around you.
• • You'll contribute to your squad's quarterly goals and long-term vision alongside your Product Manager and Engineering Manager.
• • You'll become a guardian of your team's technical quality; spotting areas of investment, proactively managing technical debt, and making sure we don't let 'busy work' crowd out the work that truly matters.
• • You'll communicate complex ideas across multiple teams, proactively identify who needs to be involved, and drive alignment across the broader organisation.
• • You'll support less experienced colleagues through direct mentorship, thoughtful feedback during reviews, and by modelling what great engineering looks like in practice.
• • You'll help Engineering Managers understand where the team needs to grow technically, and you'll use spaces like guild meetings, design doc reviews, and pairing sessions to lift the overall standard.
• • You'll establish frontend architecture patterns, including state management, performance budgets, accessibility, and comprehensive testing.
• • You'll lead observability and frontend performance monitoring; defines SLOs where relevant, manages incident responses, and conducts blameless post-mortems.
• • You'll oversee frontend security practices, including secrets hygiene, dependency risk management, and secure handling of sensitive billing/payment data in the UI.
• • You'll coordinate multi-team deliverables and align stakeholders to resolve technical blockers across the organization.
• • You'll experience with — or a strong interest in — modern AI-augmented workflows, including leveraging agentic workflows, developing custom agentic skills to extend AI capabilities, utilizing AI-powered code reviews...
• • At Perk, we take an IRL-first approach to work, where our team works together in-person 3 days a week. As such, this role requires you to be based within commuting distance of our hubs.
• • We fundamentally believe in the value of meeting in real life to improve connectivity, productivity, creativity and ultimately making us a great place to work.
• • For certain roles, we can help with relocation from anywhere in the world, English is the official language at the office. Please submit your resume in English if you choose to apply. Do not forget to submit an updated portfolio and/or resume.
• • Perk is a global company with a diverse customer base, and we want to make sure the people behind our product reflect that. We’re an equal opportunity employer, which means you’re welcome at Perk regardless of how you look, where you’re from, or anything else that makes you, well, you.
• • Protect Yourself from Recruitment Scams
• • All official communication from Perk will always come from email addresses ending in @perk.com or @externalperk.com, our verified social media channels, or recruiters listed on our official LinkedIn page.
• • We will never ask you to pay for equipment, training, or fees, request sensitive personal information such as bank details early in the process, or communicate through unofficial apps like WhatsApp, Telegram, or Signal.
• • If you receive a message claiming to be from Perk that seems suspicious, please do not respond. Forward it to security [at] perk .com, and we will confirm whether it is legitimate.
• • #LI-Hybrid