About the Company

Modulr is a rapidly growing fintech company focused on powering businesses with embedded payments. Operating across the UK and Europe, Modulr provides an industry-leading API platform that enables organizations—from SMEs to large enterprises—to seamlessly pay-in, collect, and disburse funds.

Deeply integrated into the global payments ecosystem, Modulr connects to major payment schemes such as Faster Payments, SEPA, SWIFT, and Open Banking. Backed by leading investors and with a strong global presence, Modulr is redefining how businesses manage payments through scalable, cloud-native solutions.

Introduction

Modulr is looking for a Software Engineer to design and build the next generation of its event-driven payments platform. This role offers the opportunity to work on high-scale distributed systems within a fast-paced, collaborative fintech environment.

You will be part of an autonomous squad, contributing across the full software development lifecycle—from architecture design to production deployment—while solving complex engineering challenges in real-world financial systems.

Key Responsibilities

Technical Development

Design and develop backend services using Java (17+) or similar object-oriented languages.
Build scalable microservices and event-driven systems in a cloud-native environment.
Create well-structured RESTful APIs and maintain clean service contracts.
Work with relational databases such as PostgreSQL and contribute to data modeling.

Execution & Problem Solving

Develop solutions addressing concurrency, fault tolerance, retries, and high availability.
Optimize system performance, reduce latency, and resolve bottlenecks.
Ensure strong observability using logs, metrics, and tracing tools.
Debug and troubleshoot complex distributed system issues.

Quality & DevOps

Write automated tests using frameworks like JUnit, Mockito, or Cucumber.
Participate in code reviews and promote high engineering standards.
Work with tools such as Docker, Kubernetes, CI/CD pipelines, and AWS services.
Contribute to internal frameworks, shared libraries, and best practices.

Growth & Collaboration

Collaborate in agile squads and participate in planning and design discussions.
Work across teams to deliver solutions spanning multiple systems.
Document architectures, best practices, and technical decisions.
Continuously learn and contribute to team and platform improvements.

Required Qualifications

Strong experience in Java or another object-oriented programming language.
Solid understanding of OOP, design patterns, and distributed systems.
Experience building and operating microservices in production.
Knowledge of concurrency, system performance, and scalability.
Experience with REST APIs and backend service development.
Strong problem-solving and analytical skills.
Excellent communication and teamwork abilities.

Preferred Qualifications

Experience with cloud platforms such as AWS.
Familiarity with Docker, Kubernetes, and CI/CD pipelines.
Experience working with event-driven architectures.
Knowledge of payment systems or fintech domain.

Why Join Us / Benefits

At Modulr, you will work in a high-growth fintech environment where innovation, ownership, and collaboration are at the core. You’ll have the opportunity to solve complex problems while building scalable systems that power real-world financial transactions.

Work on cutting-edge payment infrastructure and distributed systems.
Collaborative and fast-paced engineering culture.
High ownership with opportunities to influence architecture and design.
Continuous learning and career growth in a global fintech company.