Senior Product Engineer II

Wise; Greater London; On-site; GBP 111,000 - 145,000; Full time

Job summary

Wise in London seeks a Senior Backend Engineer II for the Partner Experience team. You will design and build backend microservices and RBAC for the partner portal, with SSO integration and enterprise-facing features.

You’ll collaborate across teams to ensure reliable, compliant, and scalable integrations for enterprise partners. You will work on new systems from scratch, focusing on maintainability, security, and performance while solving complex domain challenges in a fast-paced, global fintech

Qualifications

• Experience designing, building, and deploying backend microservices in Java and Spring Boot.
• Familiarity with domain-driven design, event-driven architecture, and microservices patterns.
• Experience designing RESTful APIs with OpenAPI/Swagger, OAuth2, and versioning strategies.
• Ability to design and maintain relational databases (MySQL, PostgreSQL), including indexing and data modelling.

Responsibilities

• Backend microservices for partner-facing features: fraud reporting, case management, RFI handling, audit logging, and transaction visibility.
• The permissions and role-based access control system that governs what partners can do in the portal.
• SSO (SAML 2.0) integration for enterprise partners, including identity mapping between partner systems and Wise.
• The communication layer services between Wise and partners, extending them to handle new case types and workflows.
• API design for partner-facing endpoints with emphasis on consistency and good documentation.
• Work with FinCrime, Compliance, and KYC teams to bring sanctions RFI workflows and fraud reporting into the portal.
• Technical discovery: mapping existing systems, evaluating dependencies, producing design documents that become the team's source of truth.
• Production support and debugging when live partner issues occur.

Skills

Java

Spring Boot

Domain-driven design

Event-driven architecture

Microservices patterns

RESTful APIs

OpenAPI

OAuth2

Documentation

Tools

MySQL

PostgreSQL

Kafka

SAML

SSO

Job description

• Compensation: GBP 111,000 - GBP 145,000 - yearly

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.

We're a small team that ships freuently and iterates on real partner feedback. Engineers own features from technical discovery and design through to production support. We work closely with our PM and designer to understand partner needs, and with adjacent teams (API Experience, Account Discovery, KYC, FinCrime) to pull their capabilities into the portal.

We investigate before we build. That means managing ambiguity, understanding the existing systems, APIs and dependencies before writing code. We keep process light: quick standups, focused 1:1s, and quarterly planning.

Job Description

Wise helps banks, software companies, and large enterprises use Wise's infrastructure to offer their customers cross-border payment products through our API. We're a cross-functional team across sales, implementation, product, engineering, compliance, and analytics, based in New York, London, and Singapore.

We're looking for a Senior Backend Engineer II to join our Partner Experience team in London.

The Partner Experience team builds and runs the systems that let enterprise partners go live faster and manage their day-to-day operations in one place.

We own the Partner Portal (used by many big banks to manage transfers, report fraud, handle compliance requests, and manage their teams) and the backend services behind partner onboarding, permissions, and communication.Most of what we build is new. There's no existing playbook for enterprise partner tooling at this scale, so you'll be designing systems from scratch more often than maintaining existing ones.

What will you be working on?:

• Backend microservices for partner-facing features: fraud reporting, case management, RFI handling, audit logging, and transaction visibility.
• The permissions and role-based access control system that governs what partners can do in the portal.
• SSO (SAML 2.0) integration for enterprise partners, including solving identity mapping between partner systems and Wise.
• The communication layer services between Wise and partners, extending them to handle new case types and workflows.
• API design for partner-facing endpoints. We care about consistency, documentation, and making them usable without hand-holding.
• Work with FinCrime, Compliance, and KYC teams to bring sanctions RFI workflows and fraud reporting into the portal.
• Technical discovery: mapping existing systems, evaluating dependencies, producing design documents that become the team's source of truth.
• Production support and debugging when live partner issues come up.

Qualifications

What do you need:

• Experience designing, building, and deploying backend microservices in Java and Spring Boot.
• Familiarity with domain-driven design, event-driven architecture, and microservices patterns. You think in terms of domain boundaries, aggregates, and service responsibilities.
• Experience designing and maintaining RESTful APIs commercially. Comfort with OpenAPI/Swagger, OAuth2, and versioning strategies.
• Ability to design and maintain relational databases (MySQL, PostgreSQL), including query performance, indexing, and data modelling.
• You enjoy mapping complex technical landscapes: understanding existing systems, dependencies, and constraints before proposing solutions. You write clear documentation of what you find.
• You deliver reliably and manage your own work without needing constant check-ins
• You work well with adjacent teams, unblock yourself when dependencies come up, and build relationships that go beyond PR reviews.
• You understand what large enterprise customers need from software: reliability, auditability, compliance, and security as design constraints, not bolt-ons.

Nice to have:

• Experience building enterprise portals, partner platforms, or B2B SaaS products.
• Understanding of payments systems and the complexities of cross-border money movement.
• Experience with identity and access management (SAML, SSO, SPIFFE, OAuth2).
• Familiarity with Kafka or other event streaming platforms.
• Experience in a platform team serving multiple internal or external consumers.
• Ability to explain technical decisions to non-technical people (product managers, partners, compliance teams).
• Interest in international finance, foreign exchange, or payments infrastructure.

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.

We believe teams are strongest when they are diverse, equitable and inclusive.