# Senior Java Software Engineer (Remote - Colombia) - CO121-DV > OKTO PAYMENTS · Colombia (Remote) · Full-time · Posted 2026-09-16 **Workplace:** remote **Department:** Technology ## Description OKTO PAYMENTS' continuous growth demands high-caliber candidates who embody professionalism, passion, and creativity. For those who join us, we offer significant career advancement, stimulating challenges, and a clear runway for growth. OKTO PAYMENTS is the next-generation Payment Service Provider - AI-native, precision-engineered, and relentlessly merchant-obsessed. Built for merchants operating in the most complex and demanding eCommerce sectors, our platform goes far beyond transaction processing. We solve for scale, compliance, and performance with one unshakable focus: delivering outcomes that power merchant growth. From payments and banking to treasury and settlement, we engineer the financial infrastructure that gives our partners a competitive edge. The result? Faster onboarding, smarter operations, and resilient, real-time performance. At OKTO PAYMENTS, we enable merchants to Play Differently, transforming payments from routine transactions into true differentiators that deliver personalized, frictionless experiences. Our AI-native innovation harnesses data and insight to power every decision, while our proprietary in-house engineering ensures precision and control. Combined with deep, trust-based relationships worldwide, we’re redefining what it means to build, scale, and win in complex digital commerce. **Summary **As a Senior Software Engineer, you will play a key role in designing, developing, and maintaining our next-generation payment platform. This position requires strong hands-on experience with distributed systems, Java-based microservices, and high-volume transaction processing. You will be responsible for building scalable, secure, and reliable software solutions while collaborating closely with product, infrastructure, security, and other engineering teams. ### **Key Responsibilities** ### **1\. Software Development** - Design, architect, and develop backend software solutions for high-volume payment processing. - Create and maintain high-quality, optimized code with robust unit tests and appropriate test coverage. - Develop scalable, secure, and reliable software solutions using Java and Spring technologies. - Contribute to the evolution of the payment platform and its underlying architecture. ### **2\. Software Architecture & Distributed Systems** - Lead the design and architecture of complex distributed systems that handle real-time financial transactions at scale. - Take a lead role in the transition to a microservices-based architecture for payments. - Design and implement solutions based on Event-Driven Software Design Patterns. - Ensure systems meet high standards of scalability, security, and reliability. ### **3\. Payments & Integrations** - Lead the integration of payment gateways, banks, card networks, and alternative payment methods. - Work with payment flows, settlement, reconciliation, and fraud detection mechanisms. - Contribute to the development of solutions supporting high-volume financial transactions. ### **4\. APIs & Security** - Design and develop secure and scalable RESTful APIs. - Implement and work with OAuth2 Security, JWT, and SSO mechanisms. - Ensure the security and reliability of payment-related services and integrations. ### **5\. AWS & Cloud** - Design and develop solutions using AWS cloud services. - Work with AWS services including IAM, EC2, S3, Lambda, RDS, DynamoDB, and API Gateway. - Collaborate with DevOps teams to optimize cloud-based solutions. ### **6\. Databases & Transaction Management** - Work with PostgreSQL, MySQL, and NoSQL databases. - Implement and optimize transaction management. - Perform database tuning to support high-volume transaction processing. - Contribute to high-availability strategies for critical payment systems. ### **7\. DevOps & Production Systems** - Collaborate with DevOps teams to optimize CI/CD pipelines. - Contribute to monitoring strategies for production systems. - Support the scalability, performance, and reliability of production environments. ### **8\. Technical Leadership & Collaboration** - Provide technical leadership and mentor junior developers. - Guide the team in best practices and efficient coding techniques. - Collaborate with cross-functional teams to deliver highly scalable and performant solutions. - Drive continuous improvement initiatives, identifying bottlenecks and optimizing the software development lifecycle. ### **9\. Technical Documentation** - Produce clear and concise technical requirements, design documents, and specifications. - Communicate complex technical concepts effectively with technical and business stakeholders. ## Requirements ### **The professional must be based in Colombia.** ### **Education & Experience** - Bachelor's or Master's degree in Computer Engineering or a related field. - 7 years of experience in backend software development. - Desirable: experience leading teams and architecting payment systems. - **Proven working experience in the FinTech/Payments industry.** **Java & Spring** - Deep knowledge of Java 11+. - Strong experience with Spring Boot. - Strong experience with Spring Cloud (Netflix OSS). - Strong experience with JPA ORM. **Software Architecture** - Strong understanding of distributed systems. - Extensive experience with Event-Driven Software Design Patterns. - Expertise in microservices architecture. - Experience architecting and designing complex systems. **Payments** - Strong understanding of payment flows. - Experience with settlement and reconciliation. - Knowledge of fraud detection mechanisms. - Experience integrating payment systems and financial institutions. **APIs & Security** - Expertise in designing secure RESTful APIs. - Strong knowledge of OAuth2 Security. - Experience with JWT and SSO mechanisms. **AWS** - Strong experience with AWS cloud services, including: - IAM - EC2 - S3 - Lambda - RDS - DynamoDB - API Gateway **Databases & Performance** - Hands-on experience with transaction management. - Experience with database tuning. - Experience with PostgreSQL, MySQL, or NoSQL stores. - Experience with high-availability strategies. - Experience working with high-volume transaction processing environments. **Version Control & Engineering Practices** - Advanced proficiency in Git for source control and versioning. - Strong understanding of software development and coding best practices. - Experience developing high-quality, optimized code with appropriate unit test coverage. **Languages** - Advanced English (mandatory), with the ability to participate in technical discussions and communicate complex technical concepts effectively. - Fluent or Native Spanish (mandatory), with the ability to communicate complex technical concepts effectively. Please submit your **CV/resumé in English**. ## Benefits - 💰 Competitive Compensation - 📈 Career Growth - 🎓 Continuous Learning - 🌱 Inclusive Environment - 🏠 Work-from-home - 🎂 Birthday leave ## Apply [Apply at OKTO PAYMENTS](https://apply.workable.com/oktopayments/j/5DCF945F3A/apply) --- Powered by [Workable](https://www.workable.com)