Company Overview

The organisation operates within the financial technology industry, developing digital payment solutions and infrastructure that enable businesses and financial institutions to process electronic transactions. Its technology environment focuses on secure payment connectivity, transaction processing, financial data exchange, and reliable integration between banking systems and third-party payment providers.

Role Summary

The Payment Gateway Integration Developer will be responsible for developing, integrating, and maintaining software components that connect digital financial platforms with payment gateways, banking networks, merchant systems, and external financial service providers.

The position requires practical software development experience and an understanding of payment processing workflows, transaction authentication, API communication, and financial system interoperability. The successful candidate will contribute to building reliable integration services that support card payments, bank transfers, merchant settlements, and other electronic payment methods.

Working remotely from Estonia, the developer will collaborate with backend engineers, product specialists, payment operations teams, and security professionals to deliver scalable integration solutions.

Key Responsibilities

• Design, develop, and maintain payment gateway integrations connecting fintech platforms with external payment service providers.

• Build and maintain RESTful APIs for transaction initiation, payment confirmation, refunds, and settlement notifications.

• Implement secure communication between merchant platforms, banking infrastructure, and payment processing services.

• Develop integration modules supporting card payments, account-to-account transfers, and alternative electronic payment methods.

• Implement webhook processing and asynchronous transaction notification mechanisms.

• Troubleshoot payment failures, API communication errors, transaction inconsistencies, and integration performance issues.

• Collaborate with backend developers to improve transaction processing reliability and system interoperability.

• Implement appropriate authentication, encryption, and access control mechanisms for payment-related services.

• Write automated tests covering payment workflows, API responses, and integration reliability.

• Maintain technical documentation describing integration endpoints, authentication requirements, and transaction processes.

• Participate in code reviews and contribute to continuous improvements in software architecture.

• Investigate production issues and support the implementation of corrective technical solutions.

Requirements and Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or equivalent practical experience.

• Demonstrable experience in backend development and third-party API integrations.

• Proficiency in at least one backend language, such as Java, Python, PHP, C#, or Node.js.

• Strong understanding of REST APIs, JSON, HTTP protocols, and webhook architecture.

• Familiarity with payment gateways, merchant acquiring, transaction processing, or digital banking systems.

• Knowledge of relational databases such as PostgreSQL or MySQL.

• Understanding of secure authentication methods, API keys, OAuth 2.0, and encryption principles.

• Experience with Git, automated testing, and software debugging.

• Strong analytical and problem-solving abilities.

• Good communication skills and the ability to collaborate with distributed engineering teams.

Benefits

• Fully remote working opportunity within Estonia.

• Opportunity to develop technology supporting modern digital payment infrastructure.

• Exposure to international payment integrations and financial technology systems.

• Collaborative software engineering environment.

• Professional development opportunities in payment technology and API engineering.

• Flexible remote working structure and opportunities to contribute to technical innovation.

Application Instructions

Interested candidates should submit an updated CV highlighting their software development experience, API integration projects, and familiarity with payment processing technologies. Applications should include relevant technical experience, programming languages, and examples of financial technology or integration projects where applicable.

Are you interested in this position?

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

#JobsHubEstonia #GlobalRecruitment
#CareerOpportunities #HiringNow
#JobSeekersNetwork #EstoniaJobs
#RecruitmentServices #EmploymentPortal.