Company Overview

The organisation operates in the fintech technology sector, developing digital financial infrastructure that enables secure communication between banking platforms, payment service providers, financial applications, and external technology systems. Its engineering environment prioritises scalable architecture, reliable integrations, secure data exchange, and efficient financial transaction processing.

Role Summary

The Fintech API Integration Engineer will design, implement, and maintain API integrations connecting digital financial products with banking infrastructure, payment gateways, third-party service providers, and financial data platforms.

This position requires a combination of software engineering expertise and an understanding of financial technology workflows. The successful candidate will contribute to the development of reliable integration services, troubleshoot connectivity issues, and ensure that financial data moves securely and accurately between interconnected systems.

Working remotely from Estonia, the engineer will collaborate with backend developers, product specialists, infrastructure engineers, and external technical partners to deliver dependable integration solutions.

Key Responsibilities

• Design, develop, and maintain RESTful APIs supporting fintech applications and digital financial services.

• Build integrations with banking systems, payment gateways, financial data providers, and third-party platforms.

• Implement secure authentication and authorisation mechanisms for API communication.

• Develop services for payment initiation, transaction status updates, account information retrieval, and settlement notifications.

• Troubleshoot API failures, connectivity issues, data inconsistencies, and integration errors.

• Implement webhook services and event-driven communication between financial systems.

• Work with JSON, XML, and other structured data formats used in financial integrations.

• Apply encryption, access control, and secure coding practices to protect financial information.

• Develop automated integration tests and maintain technical documentation.

• Monitor API performance, response times, availability, and error rates.

• Collaborate with engineering teams to improve integration architecture and system reliability.

• Support technical investigations involving payment failures and external service disruptions.

Requirements and Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related technical discipline.

• At least three years of experience in API development, software integration, or backend engineering.

• Strong programming experience with Python, Java, JavaScript, or similar backend technologies.

• Practical experience designing and consuming REST APIs.

• Knowledge of authentication standards, including OAuth 2.0 and token-based authentication.

• Understanding of SQL databases, data structures, and backend application architecture.

• Familiarity with payment gateways, banking APIs, or open banking integrations.

• Experience with Git, automated testing, and API documentation tools.

• Understanding of secure software development and financial data protection.

• Strong troubleshooting, problem-solving, and technical communication skills.

Benefits

• Fully remote working arrangement within Estonia.

• Competitive employment package reflecting technical expertise.

• Opportunity to work on real-world financial infrastructure and integration projects.

• Access to modern engineering tools and development technologies.

• Continuous technical learning and professional development.

• Collaborative environment involving experienced fintech and software engineering professionals.

• Opportunity to contribute to scalable digital banking and payment solutions.

Application Instructions

Interested applicants should submit an updated CV highlighting their API engineering experience, backend development capabilities, and previous integration projects. Candidates are encouraged to outline their experience with banking APIs, payment technologies, authentication frameworks, and secure financial data exchange.

Are you interested in this position?

Apply by clicking on the “Apply Now” Button below!

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