Senior Backend Developer

Capital Pay Software Solutions Ltd

• Promoting world class payment solution systems to global audiences
• Capital Pay Software Solutions Ltd is advancing its capabilities by enhancing its Payment Aggregator Platform. 
• This strategic initiative is crucial to our international operations, designed for optimal flexibility and adaptability across diverse markets. We are seeking highly skilled and motivated professionals to strengthen our expert team. If you excel in a dynamic environment and are dedicated to developing secure and scalable FinTech solutions, we encourage you to connect with us. Join Capital Pay International in driving innovation in the global payment landscape.
• We are seeking a Senior Backend Developer with extensive experience in the FinTech industry, specifically in building secure and robust solutions. The ideal candidate will be a technical leader, capable of designing and implementing the core architecture of our payment aggregation platform.
   

Key Responsibilities:

• Lead the design and development of the core backend architecture, including the API gateway, transaction management layer, and merchant management layer.
• Select and implement appropriate technologies from our stack, which includes python, Node.js, or Jave for programming languages; Django, Express.js, or Spring Boot for frameworks; and PostgreSQL or MySQL for transactional date, with Redis for caching and session management.
• Design and implement robust security measures, including AES-256 encryption for sensitive data, TLS for secure communication, and OAuth/JWT for authentication and authorisation.
• Ensure the platform is compliant with PCI-DSS, GDPR, and other relevant data protection regulations.
• Integrate multiple payment gateways (Capital Pay, Stripe, Paypal, Barclaycard, Adyen, Worldpay) using provided SDKs/APIs.
• Implement advanced fraud detection and anti-mney laundering (AML) systems.
• Develop and maintain RESTful APIs for seamless communication with the frontend and external systems.
• Implement features for transaction tracking and status management (pending, completed, failed), refund and chargeback handling, and payment settlement (funds transfer to merchant accounts).
• Participate in architectural design discussions, code reviews, and technical mentoring.
• Contribute to the development of a developer-friendly API and comprehensive documentation.
• Set up and manage cloud infrastructure on AWS, Google Cloud, or Azure.
• Implement and manage continuous integration and continuous delivery (CI/CD) pipelines to automate software builds and deployments

We are looking for a candidate who:
• Has a proven track record of 6+ years in backend development, with significant experience in the FinTech or financial services sector.
• Possesses deep expertise in building scalable and secure backend services.
• Is proficient in at least one of the specified programming languages (Python, Node.js, Kotlin or Java) and their associated frameworks.
• Has a strong experience with database design and management, including both SQL (PostgreSQL or MySQL) and potentially NoSQL databases.
• Has hands-on experience with RESTful API design and microservices architecture.
• Demonstrates a strong understanding of security best practices and compliance standards like PCIDSS and GDPR.
• Has experience integrating with third-party APIs, particularly payment gateways.
• Has experience in NFC/RFID technology and Payment Networks integrations.
• Is adept at problem-solving, has excellent attnetion to detail, and can work effectively in a fast-paced,agile environment.
• Familiarity with serverless architecture is beneficial.
• Experience with messaging systems like RabbitMQ or Kafka is a plus.
• Experience implementing two-factor authentication (2FA) for user logins..
• Experience with performance optimisation for high-traffic scenarios and a large number of concurrent users.