Backend Engineer - FinTech

Department: Platform Development

Location: Berlin

Employment Type: FullTime

About the Company

The AI-driven trade platform transforming industrial supply in infrastructure, energy, and construction materials. It connects vetted suppliers across Asia, Europe, and the GCC region with local demand through a single integrated platform.

Its proprietary AI stack digitizes and automates the full lifecycle of materials trade – from procurement and pricing to inventory, logistics, and embedded financing – replacing thousands of manual, relationship-driven processes with real-time orchestration.

Buyers gain instant quotes, reliable availability, and predictable delivery through a unified operating system. Suppliers benefit from accurate forecasting, disciplined demand management, and seamless integration into cross-border fulfillment networks. The company partners with leading brands to run both dropship and cross-dock fulfillment motions for large-scale transactions, turning global supply chains into predictable, repeatable, software-like workflows.

The company has scaled to triple-digit-million GMV, operates across six international markets, and is rapidly expanding toward profitability. With a team of 80+ people across Berlin (HQ) and Asia, it is building the world’s first industrial-grade AI operating system for materials – redefining how global trade works in one of the world’s largest and most essential industries.

The company is backed by top-tier investors as well as global institutional banking partners, having recently closed its $40m series B - Atomico, Project A, and Invent Capital with institutional backing from Commerzbank and KfW.

Financial systems demand a different level of precision. You will work on the backend infrastructure that handles payments, financial data, reconciliation, and compliance-critical workflows — systems where correctness and auditability are non-negotiable.

Tech Stack: Java 21 (Spring Boot 3), Python, PostgreSQL, AWS, Kinesis, Terraform, GitHub Actions, TypeScript.

What you will do

• Design and implement backend services for payment processing, invoicing, reconciliation, and smart financial reporting.

• Build robust, auditable data pipelines that ensure accuracy and traceability across all financial operations.

• Develop and maintain integrations with payment gateways, banking APIs, and financial data providers.

• Enforce data integrity standards and implement patterns for idempotency, retry logic, and failure handling in financial flows.

• Collaborate with compliance and product teams to translate regulatory requirements into technical implementation.

• Contribute to fraud detection logic, rate limiting, and access control mechanisms that protect financial operations.

• Own incidents end-to-end — investigate, resolve, and drive post-mortems to improve system reliability.

Who you are

• 5-7+ years of backend engineering experience, with meaningful exposure to FinTech, payments, or financial data systems.

• Strong proficiency in Java (Spring Boot) with a deep understanding of transactional systems and data consistency.

• Solid experience with PostgreSQL, including schema design, indexing, and query optimization for financial data.

• Experience integrating with payment processors (Stripe, Adyen, or similar) or open banking APIs.

• High ownership mindset — you care about correctness as much as you care about delivery speed.

• Calm under pressure, structured in your thinking, and rigorous in your testing practices.

We are an equal-opportunity employer and welcome applicants from all backgrounds, regardless of race, ethnicity, gender identity or expression, sexual orientation, religion, age, disability, or any other characteristic. We believe that diversity drives innovation, creativity, and collective strength.