Building the Future of Open FinancePayward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, general financial system.The teamPayward Services is an enterprise infrastructure platform that enables companies to seamlessly integrate trading, payments, funding, and digital asset services through a single unified system. It provides coordinated liquidity, custody, compliance, risk management, and settlement capabilities, reducing operational complexity for fintechs, banks, brokerages, and payment providers.As a Senior Software Engineer in Payward Services you'll build and scale the systems that make this platform work under the hood, from real-time coordination across services to the infrastructure enterprise partners depend on to move money and assets safely, at scale, every day. The opportunityDesign and implement robust Rust services and libraries that power trading, payments, and crypto experiences with a focus on reliability, performance, and user impact.Write reusable, testable, and highly efficient code that scales across teams and supports revenue-critical systems without compromising safety or security.Work alongside hundreds of experienced Rust engineers, contributing to a high-performance,



product-driven engineering culture.What you bring5+ years of software engineering experienceProficient in writing network services or asynchronous code in RustHave a security-first mindset during system design to ensure robustnessDemonstrate the ability to autonomously debug issues across the stack (OS, network, application)Apply a solid understanding of distributed systems and technologies, including RPC protocols, Kafka, and Event-Driven Systems, to design scalable solutionsCollaborate effectively with product teams to gather requirements and constraints for designing appropriate systemsTake complete end-to-end ownership of systems and librariesProvide mentorship to other engineers while contributing to defining the technical cultureNice to havesExperience building B2B focused products, ideally in the fintech or crypto spaceUnless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis.Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution.We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.As an equal opportunity employer, we don't tolerate discrimination or harassment of any kind, whether based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status, or any other protected characteristic as outlined by federal, state, or local laws.Czech Republic;

📌 Senior Software Engineer, Services (Madrid)
🏢 Kraken
📍 Madrid