Wise is a global technology company, building the best way to move and manage the world’s money.
Min fees. Max ease. Full speed.
Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money.
As part of our team, you will be helping us create an entirely new network for the world's money.
For everyone, everywhere.
More about our mission and what we offer.
Job DescriptionWe're looking for a Senior Backend Engineer to join our Rules Platform team (Risk & Control Tooling) in Tallinn.
The team builds and maintains the shared infrastructure that enables teams across Wise — including Fraud, AML and KYC — to create, execute and manage risk assessments and controls.
Our goal is to make risk assessments fast, reliable, scalable and easy to integrate, while ensuring that the systems protecting our customers remain consistent and maintainable as Wise grows.
You'll work on complex backend challenges involving distributed systems, shared Engineering components (internal libraries), data consistency and platform reliability, with the opportunity to influence technical decisions and help shape the future of the platform.
What you'll be working on
- Building and evolving our Rules Platform, developing reliable, scalable backend services and reusable internal libraries used by multiple Engineering teams.
- Driving technical design and architecture decisions for complex distributed systems where performance, reliability and data consistency are critical.
- Improving platform performance and reliability, monitoring service-level objectives (SLOs), identifying bottlenecks and driving improvements.
- Collaborating across teams, working closely with Product Managers and Engineers to understand their needs, prioritise improvements and make the platform easier to use and extend.
- Taking ownership of meaningful Engineering initiatives, from identifying problems and evaluating trade-offs through to implementation and delivery.
- Supporting Engineering excellence, contributing to technical discussions, code reviews and mentoring other engineers.
What you'll bring
- Strong hands-on experience(around 5 years) with JVM-based languages, such as Java or Kotlin, and building complex backend systems.
- Experience with Kafka, SQL databases and distributed systems, particularly where reliability and data consistency matter.
- Experience building or maintaining internal libraries, shared components or reusable Engineering solutions consumed by multiple teams.
- Confidence in system design and technical decision-making, including evaluating trade-offs and proposing architectural improvements.
- A strong product mindset, with the ability to understand the needs of internal users and work closely with Product Managers.
- Experience mentoring other Engineers and contributing to Engineering best practices.
- Strong communication skills and the ability to collaborate across teams and explain technical decisions clearly.
Nice to have
- Experience with Spring / Spring Boot and build tooling.
- Experience in FinTech, FinCrime or risk-related systems.
- Familiarity with regulated environments where auditability, traceability and governance are important.
You don't need to tick every box. We're interested in Engineers who enjoy solving complex problems, take ownership of their work and are motivated to learn and grow.
Additional InformationWhat we offer you
- 💶Salary range: 5750 - 7083.33 EUR gross/monthly
- 🚀 RSUs in a growing company
- Hybrid working in Tallinn, Estonia (with relocation and visa sponsorship support, if needed)
- 💪 A robust annual self-development budget for your professional growth
- 🌿 3 fully paid ‘me days’ per year to help you manage life
- 📈 Opportunities to grow your technical expertise, mentor others and progress along our Engineering Career Map.
Interested? Find out more:
- 👀 How we work – a practical guide
- ❤️Our values
- 💻 The Wise Tech Stack, 2025 edition
- And also check out our Engineering blog
For everyone, everywhere. We're people building money without borders — without judgement or prejudice, too. We believe teams are strongest when they are diverse, equitable and inclusive.
We're proud to have a truly international team, and we celebrate our differences.
Inclusive teams help us live our values and make sure every Wiser feels respected, empowered to contribute towards our mission and able to progress in their careers.
If you want to find out more about what it's like to work at Wise visit Wise.Jobs.
Keep up to date with life at Wise by following us on LinkedIn and Instagram.
Skills Required
- Around five years of hands-on experience with JVM-based languages such as Java or Kotlin
- Experience building complex backend systems
- Experience with Kafka
- Experience with SQL databases
- Experience with distributed systems, especially reliability and data consistency
- Experience building or maintaining internal libraries, shared components, or reusable engineering solutions
- System design and technical decision-making experience
- Ability to understand internal user needs and collaborate with Product Managers
- Experience mentoring engineers and contributing to engineering best practices
- Strong communication and cross-team collaboration skills
- Experience with Spring or Spring Boot and build tooling
- Experience in fintech, financial crime, or risk-related systems
- Familiarity with regulated environments involving auditability, traceability, and governance
Wise Compensation & Benefits Highlights
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Equity Value & Accessibility — Share-based compensation is a standard element of pay and is presented as a meaningful part of total rewards. RSU grants accompany offers in many roles, adding long-term value beyond base salary.
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Leave & Time Off Breadth — Paid time off is presented as generous in multiple locations, with US policies listing high PTO totals. Time away from work sits alongside office perks as a core strength of the overall package.
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Healthcare Strength — Health insurance is emphasized in benefits materials and is regarded as a solid component of total rewards. Medical, dental, and vision coverage are commonly included and viewed positively.
Wise Insights
What We Do
Wise is a global technology company, building the best way to move and manage the world's money. With Wise Account and Wise Business, people and businesses can hold 40 currencies, move money between countries and spend money abroad. Large companies and banks use Wise technology too; an entirely new network for the world's money. Launched in 2011, Wise is one of the world’s fastest growing, profitable tech companies. In fiscal year 2025, Wise supported around 15.6 million people and businesses, processing over $185 billion in cross-border transactions and saving customers around $2.6 billion.
Why Work With Us
We’re truly global in who we are, how we work, and how we build. Everything we do is centred around creating a world of money that’s fast, easy, fair. And open to all. Everyone who works here owns a piece of Wise, from the work they do, to the stock they hold.
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Wise Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
We expect new joiners in the office most days to build connections and learn from colleagues for their first six months. After that, most Wisers split their working week between the office and home, typically coming in at least 12 times a month.
