Software Engineer - Payin Platform

Posted 7 Hours Ago
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Tallinn, Harju maakond, EST
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
Build and improve the Payin Platform powering money entering Wise: design reliable, scalable APIs and services for payment methods, ensure system correctness, participate in code review, and deliver end-to-end solutions for high-volume payment processing.
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 Payin Platform team owns the layer that powers money entering Wise. We abstract payment methods such as ACH, Apple Pay, Open Banking, and Bank Transfer into shared services and APIs, so product teams build on one reliable platform instead of solving the same problems again and again. We handle high-volume transactions at scale, where correctness and reliability are non-negotiable.

As part of the team, you will build and improve the platform capabilities that many other Wise domains rely on, such as payment sessions and payment-method abstractions. You will contribute to shaping how we solve problems, help move work forward towards clear, shippable milestones, and design clean, well-documented APIs for payment processing. Across everything you touch you will care about system correctness and reliability, and you will take an active part in code review, giving and receiving constructive feedback.

 

Qualifications

Technical Excellence

  • 3+ years of experience with Java or other JVM-based languages, and hands-on experience with the Spring framework.

  • A track record of writing clean, maintainable code and a strong belief in best practices like code reviews, open feedback, and continuous improvement.

  • Familiarity with backend development, including databases (SQL/NoSQL), synchronous/asynchronous communication, and distributed systems.  

  • Experience with web development technologies such as REST APIs, microservices, and CI/CD pipelines.  

  • The ability to design technical solutions that balance latency, throughput, adaptability and scalability.

  • A passion for learning new technologies, tools, and patterns to solve problems effectively.
     

Product Mindset

  • A customer-first approach — you prioritize work that solves real customer pain points and use data to drive decisions.  

  • The ability to take ownership of problems, propose solutions, and drive projects end-to-end to deliver measurable impact.  

  • A knack for identifying opportunities to deliver value faster and providing constructive feedback on product and design decisions.  
     

 Collaboration

  • Strong communication skills — you can break down complex technical concepts for non-technical audiences and collaborate effectively across teams.  

  • A proactive mindset — you take initiative to improve our codebase, architecture, and processes.  

  • A passion for knowledge sharing — you enjoy fostering a culture of learning within the team.

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.

Skills Required

  • 3+ years of experience with Java or other JVM-based languages
  • Hands-on experience with the Spring framework
  • Track record of writing clean, maintainable code and participating in code reviews
  • Familiarity with backend development including databases (SQL/NoSQL)
  • Experience with synchronous and asynchronous communication patterns
  • Experience designing and operating distributed systems
  • Experience with web development technologies such as REST APIs and microservices
  • Experience with CI/CD pipelines
  • Ability to design technical solutions balancing latency, throughput, adaptability and scalability
  • Customer-first product mindset, ownership, strong communication and collaboration skills

What the Team is Saying

Surendra
Smrithi
Pavan
Jennifer
Lindsay
Lauren

Wise Compensation & Benefits Highlights

  • Equity Value & Accessibility Equity is granted to all employees via time‑based RSUs/stock awards, aligning staff with company performance. This broad accessibility makes ownership a core part of total rewards.
  • Leave & Time Off Breadth Policies include a global minimum of 33–36 paid days off and a paid six‑week sabbatical after four years with a cash stipend. The sabbatical is positioned as a standard milestone benefit in addition to annual leave.
  • Parental & Family Support Wise commits to a minimum of 18 weeks’ fully paid parental leave for birth or adoption across many offices. Eligibility rules and tenure may apply by location while maintaining a companywide minimum standard.

Wise Insights

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The Company
9,000 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: Flexible
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