Senior Software Engineer

About the role

About the role

The Lean Store team owns some of Lean's most revenue-critical and compliance-sensitive infrastructure — from payouts and billing to the regulatory ledger underpinning ADGM and SwiftX growth. As a Senior Software Engineer on this squad, you'll take full ownership of core systems, drive delivery on committed integrations, and ensure the reliability of infrastructure that processes millions in transactions. This is a hands-on execution role for an engineer who thrives on owning domains end-to-end.

About Lean

Lean is the leading financial infrastructure provider in the Middle East. We power some of the region's largest companies with APIs that enable payments, account verification, financial data access, and other critical financial infrastructure.

What started as the region's pioneering Open Banking platform and quickly became the de facto leader in account aggregation and payment initiation in the region is now becoming something bigger: a multi-product infrastructure company powering payments, data, and lending across MENA.

We've processed billions of dollars in transactions. We're trusted by 350+ clients — from Binance and Careem to Etisalat — and backed by General Catalyst, Sequoia, and Shorooq. Our $67.5M Series B was just the beginning. We're expanding into new markets, opening offices, acquiring businesses, and building capabilities that didn't exist here before.

What you'll own

- Build and maintain core ledger functionality that underpins Lean's SwiftX compliance use case and regulatory requirements for ADGM scaling

- Own the billing system end-to-end — its reliability, maintenance, and ongoing evolution

- Deliver on the Mal integration, a strategically committed new integration with direct revenue implications

- Cover ongoing payouts infrastructure — incident response, client features, and DC-related work — ensuring SLA adherence on a live revenue stream

- Drive stability, performance, and scalability improvements proactively across the squad's domain

- Give design-level code reviews, contribute to refinement, and write clear technical specifications

What we're looking for

Must-have:

- Strong backend engineering in Java, Spring Boot, JPA/Hibernate, microservices, and REST APIs

- Production experience with Kafka for event-driven systems

- Data layer proficiency: PostgreSQL and Redis

- Familiarity with build and delivery tooling: Maven, Docker, Jenkins

- Observability mindset: Prometheus and Grafana in production environments

- Experience with AI-assisted engineering tooling (e.g. Claude) in day-to-day work

- Ability to own a domain independently — handle most backlog items without direction, drive design decisions, and contribute to tech specs

- Writes high-quality, secure, fully tested code with solid monitoring and alerting