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Backend Engineer - FinTech

On-site Full-time

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Key ResponsibilitiesDesign and develop backend services for payment processing, invoicing, reconciliation, and advanced financial reporting. Create robust, auditable data pipelines that guarantee accuracy and traceability across all financial operations. Develop and maintain integrations with payment gateways, banking APIs, and financial data providers. Enforce data integrity standards, implementing patterns for idempotency, retry logic, and failure handling in financial workflows. Collaborate with compliance and product teams to translate regulatory requirements into effective technical implementations. Contribute to fraud detection systems, rate-limiting, and access control mechanisms to ensure secure transactions.

About the job

About the Company

Coretylynt is an innovative AI-powered trade platform revolutionizing industrial supply chains in infrastructure, energy, and construction materials. By linking verified suppliers across Asia, Europe, and the GCC region with local demand through a comprehensive integrated system, we are transforming the way materials are traded.

Our proprietary AI technology automates and digitizes the entire lifecycle of materials trade, covering procurement, pricing, inventory management, logistics, and embedded financing. This replaces traditional, manual processes with real-time orchestration, enabling buyers to receive instant quotes, ensure reliable availability, and predict delivery times through a unified operating system.

For suppliers, we offer precise forecasting and effective demand management while facilitating seamless integration into cross-border fulfillment networks. We collaborate with leading brands to manage both dropship and cross-dock fulfillment for large transactions, turning global supply chains into systematic, software-like workflows.

With backing from top-tier investors, we have achieved substantial growth, operating across six international markets and rapidly moving towards profitability. Our team of over 80 professionals, based in Berlin (our headquarters) and Asia, is dedicated to developing the world’s first industrial-grade AI operating system for materials, fundamentally redefining global trade in one of the most crucial sectors.

In the realm of FinTech, precision is paramount. As a Backend Engineer, you will be responsible for the backend infrastructure that underpins payments, financial data handling, reconciliation, and compliance-critical workflows, where accuracy and auditability are essential.

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

About Coretylynt

Coretylynt is at the forefront of transforming industrial supply chains with its cutting-edge AI-driven platform. With a focus on efficiency and precision, the company is dedicated to connecting suppliers and buyers while redefining global trade processes. Join us to be part of a visionary team that is shaping the future of FinTech and materials trade.

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