Senior Backend Engineer (Payments)

About us

Your Contribution to Our Growth

What You’ll Do

• Design, develop, and maintain scalable, high-availability backend services and APIs using Node.js and TypeScript, Java, and JavaScript.
• Collaborate closely with product, infrastructure, and operations teams to deliver robust payment workflows and integrations.
• Work on core components of our Payments product, including external PSP connectivity, routing logic, and transaction reconciliation.
• Contribute to architectural discussions to ensure scalability, fault tolerance, and system security.
• Implement best practices for coding, testing, and deployment in a cloud-native environment.
• Lead and participate in code reviews, ensuring high-quality standards and knowledge sharing across the team.
• Mentor junior developers and contribute to continuous improvement initiatives.
• Stay current with emerging technologies and trends in payments and backend systems.

We’d Love to See

• Bachelor’s degree in Computer Science or related field, or equivalent experience.
• 5+ years of experience in backend development in production environments.
• Strong proficiency with Node.js, TypeScript, Java, and Javascript.
• 3+ years of hands-on experience with Java (preferably with Spring Boot).
• 3+ years of experience with messaging systems such as Kafka, RabbitMQ, or EventHub.
• Experience in designing and building RESTful APIs and event-driven systems.
• Solid understanding of software design principles, data structures, and algorithms.
• Experience with SQL and NoSQL databases.
• Familiarity with containerization (Docker, Kubernetes) and cloud environments.
• Strong debugging, problem-solving, and performance optimization skills.
• Prior experience in Payments or Fintech domains — particularly with external PSP integrations, FX, or settlement systems.
• Familiarity with AWS services and DevOps tooling.
• Experience working in a regulated financial environment.
• Exposure to real-time data processing and distributed systems design.
• These are not strict requirements to thrive in this role.
• We believe that people can learn and understand technologies if they are willing.
• We encourage you to still apply if some of the requirements are missing or lacking.
• At our offices you will find a group of people that embrace diversity and value performance over pedigree.
• Every day we draw value from the diverse experiences of our team whose backgrounds include top financial institutions, tech companies and untraditional backgrounds.
• Our success comes from identifying exceptional people and providing them with the platform to reach their true potential.
• Aquanow is an Equal Opportunity Employer.
• We are committed to providing equal employment opportunity to all qualified persons without regard to race, color, creed, religion, sex, age, national origin, citizenship status, disability, qualified veteran status, marital status, gender identity or any other unlawful criterion or circumstance.