Staff Software Engineer - Rules Platform

Location: Global

Team: General

About the Role

Join Wise's Rules Platform Team as a Staff Software Engineer and become a key technical voice in building the world's best rules engine for risk assessment. This team powers Wise's critical risk capabilities, and you'll lead complex backend initiatives, own core libraries used across teams, and design scalable services to handle growing demand. At an exciting time of platform growth, you'll shape architecture, optimize performance, and collaborate with Product, FinCrime, and engineering stakeholders to deliver reliable, high-impact solutions. You'll thrive in a collaborative environment, mentoring engineers, influencing technical decisions, and contributing to strategic roadmaps. With strong JVM expertise, Kafka, and SQL experience, you'll evolve our platform for reliability and scale. This role offers a chance to grow into technical leadership, tackling meaningful challenges in global money movement. Wise is a mission-driven company creating money without borders. Enjoy flexible global work, competitive pay (6900-8500 EUR monthly), RSUs, health benefits, and more while advancing our inclusive, innovative culture.

Key Responsibilities

• Drive complex initiatives: Lead the design and implementation of complex backend initiatives that form the foundation of our risk platform
• Own core components: Take ownership of maintaining and evolving the internal libraries and shared components consumed by multiple teams, ensuring they are robust, scalable, and well-documented
• Design for scale: Contribute directly to the architectural design and scaling of our risk assessment services, ensuring they meet high standards for performance, reliability, and data consistency
• Collaborate for impact: Work as a key technical partner with multiple stakeholders—including Product, FinCrime, and other engineering teams—to deliver robust, cross-functional solutions
• Lead and contribute to impactful, cross-functional engineering initiatives
• Drive critical system architecture and technical design decisions
• Ensure high service standards by monitoring and optimizing the system performance
• Actively participate in strategic planning, shaping the product roadmap and defining the future evolution of the platform

Required Qualifications

• Strong proficiency in JVM-based languages (e.g., Java, Kotlin)
• Proven experience maintaining internal libraries or shared components consumed by multiple teams
• Experience working with Kafka and SQL databases in complex backend systems where reliability and data consistency are critical
• Strong mentorship skills with a passion for supporting and leveling up junior engineers
• The ability to prioritize, evaluate tradeoffs, and make informed technical decisions, and comfort in leading technical discussions and architecture proposals
• Proactivity and a collaborative mindset, with experience working closely with Product Managers on decision-making

Preferred Qualifications

• Experience with the Spring framework
• Experience building or working with custom DSLs (Domain-Specific Languages)
• Background in the FinCrime domain, risk decisioning teams, or regulatory environments where auditability and traceability are important

Required Skills

• JVM-based languages (Java, Kotlin)
• Maintaining internal libraries/shared components
• Kafka
• SQL databases
• Backend systems design
• System performance monitoring and optimization
• Technical leadership and architecture
• Mentorship
• Cross-functional collaboration
• Tradeoff evaluation and decision-making

Benefits

• RSUs (stock options)
• Flexible working
• Parental leave
• Learning budget
• Paid sabbatical after 4 years
• Health insurance
• Company retreat
• Wise card

Wise is an equal opportunity employer committed to building a diverse workforce.