Backend Engineer – FinTech

Andercore

Backend Engineer responsible for developing financial systems for AI-driven fintech platform. Focus on payment processing, data integrity, and compliance in a hybrid work setting.

Posted 4/12/2026full-timeBerlin • 🇩🇪 GermanyMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

JavaPostgresSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

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.

Requirements

What you’ll need

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.

Benefits

Comp & perks

Diversity drives innovation, creativity, and collective strength.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaSpring BootPostgreSQLpayment processingdata pipelinesdata integrity standardsfraud detectionrate limitingaccess controltransactional systems

Soft Skills

ownership mindsetcalm under pressurestructured thinkingrigorous testing practices