Senior Backend Engineer, Payments

<p><strong>SENIOR BACKEND ENGINEER, PAYMENTS</strong></p><p><em>Stockholm · On-Site · Full-Time · Immediate Start</em></p><p> </p><p><strong>Who We Are</strong></p><p> </p><p>We are a well-funded, early-stage technology company on a mission to fundamentally redefine the way the world searches, discovers, and transacts, built on a philosophy that puts the user first at every step.</p><p> </p><p>The user is not simply a means of transaction. They are a valued participant whose data works for them, not against them, enriching their world and their own experience within it, with them retaining full control.</p><p> </p><p>Our mission is underpinned by proprietary, patent-pending technology built on a novel engine and system.</p><p> </p><p><strong>The Problem You Will Be Solving</strong></p><p> </p><p>The internet was built to inform the many, not to serve the individual. Platforms optimize for engagement, extraction, and consumption at global scale. AI has made this model even more efficient, with the user still largely remaining the input, not the full beneficiary.</p><p> </p><p>The problem is not information. The world has never had more. The problem is that people give away a lifetime of data without receiving the personalized experience it should enable.</p><p> </p><p>People should not have to search. They should simply find.</p><p> </p><p><strong>Who You Are</strong></p><p> </p><p>•       Highly talented and motivated to build products with people, for people</p><p>•       You thrive in zero-to-one environments and find genuine satisfaction in creating from scratch</p><p>•       A fast-paced thinker with a relentless desire to learn, improve, and raise the standard around you</p><p>•       Able to inspire, elevate, and collaborate; you make the people around you better</p><p>•       A great communicator; you express complex ideas with clarity, precision, and confidence across all levels of the organization</p><p>•       Able to transform ideas into working systems and technical milestones with light speed and precision</p><p>•       Highly ambitious and action-driven; you thrive under pressure and find genuine energy in working at the edge of what is considered possible</p><p>•       Capable of designing and building production-grade systems in a fourth of the time most experienced and “sane” professionals would consider possible</p><p> </p><p><strong>What You Will Do</strong></p><p> </p><p>•       Design and build payment orchestration infrastructure with intelligent routing, retry logic, and reconciliation across multiple external and in-house providers </p><p>•       Build robust transactional architecture that manages complex end-to-end flows from initiation to confirmed state with comprehensive failure handling </p><p>•       Integrate with third-party commerce and service APIs through clean abstractions that shield the rest of the platform from integration complexity </p><p>•       Build digital wallet and balance management systems with high standards for accuracy, transaction history, and regulatory auditability </p><p>•       Design and build enterprise billing and accounting systems that produce correct outputs at scale with strong audit trails for internal and external compliance </p><p>Build foundational data models and event logs that ensure the entire transaction layer is fully replayable, auditable, and recoverable from any failure state</p>