Software Engineer - Treasury

Posted Yesterday
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Tallinn, Harju maakond
Hybrid
Mid level
Fintech • Mobile • Payments • Software • Financial Services
Wise is one of the fastest growing fintechs in the world and we’re on a mission to make money without borders a new norm
The Role
Design and maintain resilient Java/Spring Boot microservices that automate global treasury operations: routing liquidity, handling banking constraints, ensuring immutable ledgers and data reconciliation, building REST APIs, and optimizing performance for high-throughput message-driven systems.
Summary Generated by Built In
Company Description

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 Description

The Challenge: The Logistics of Global Money

Moving £35+ billion every month requires a robust, high-availability engine. At Wise, our Back End engineers solve the complex logistics of money movement at scale:

  • Liquidity Routing Engines: Building the algorithms that determine, in real-time, the most cost-effective and fastest path for capital across 50+ currencies.

  • Asynchronous Orchestration: Managing the "moving window" of global banking hours and ensuring transactions are queued, retried, and settled across varying regional bank protocols.

  • Immutable Ledgers: Ensuring 100% data integrity and reconciliation for every penny moved, maintaining rigorous risk and audit controls in a high-throughput environment.

The Role

We are looking for a Back End Engineer who thrives on building resilient, distributed systems. In this role, you will be the architect of the services that power our global treasury operations. You will design mission-critical systems that automate the movement of massive volumes of money, ensuring our "plumbing" is invisible, fast, and fail-safe.

What You’ll Do

  • Architect Distributed Systems: Design and maintain scalable microservices (primarily in Java/Spring Boot) capable of handling billions in monthly volume with zero downtime.

  • Solve Global Logistics: Develop the logic that handles real-world constraints, such as bank-specific API quirks, holiday schedules, and regional settlement cut-offs.

  • Data Integrity & Reconciliation: Build and optimize the data infrastructure that ensures every movement of money is accounted for, creating a source of truth for our data-driven decision-making.

  • API Design & Integration: Build robust REST APIs that provide the Front End team with clean, performant access to complex financial data models.

  • Performance Engineering: Optimize database queries and message-driven architectures (Kafka/RabbitMQ) to ensure our systems scale alongside Wise’s rapid growth.

Qualifications

What You’ll Need

  • Back End Mastery: Deep expertise in Java (or similar JVM languages) and experience with Spring Boot or modern microservice frameworks.
  • Distributed Systems Knowledge: You understand event-driven architecture, concurrency, and how to build systems that stay consistent even when parts of the network fail.
  • The "Logistical" Mindset: You enjoy the challenge of modeling complex real-world rules—like banking regulations and currency volatility—into clean, maintainable code.
  • Database Fluency: Strong experience with SQL (PostgreSQL) and an understanding of how to manage high-stakes, transactional data with precision.
  • Operational Empathy: You build for observability. You care about logging, tracing, and monitoring because you know that in Treasury, "silent failures" are not an option.

Additional Information

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.

Top Skills

Java,Jvm,Spring Boot,Microservices,Rest Apis,Kafka,Rabbitmq,Postgresql,Sql,Logging,Tracing,Monitoring
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The Company
8,000 Employees
Year Founded: 2011

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.

Typical time on-site: Not Specified
Austin, TX
Brussels, BE
Hungary
Hyderabad, IN
Kuala Lumpur, MY
London, GB
New York, NY
São Paulo, BR
Singapore
Tallinn, EE
Tokyo, JP
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