I'm a developer who specializes in building scalable backend systems with Spring Boot and cloud-native technologies from Nigeria. I’m Segun Kasim, a Java backend developer with over 3 years of experience architecting and implementing microservices, cloud integrations, and performance-critical systems for the fintech and agri-tech sectors. I thrive in high-impact environments where speed, security, and scalability are critical. My expertise spans Spring Boot, PostgreSQL, AWS, Docker, and CI/CD pipelines, and I have a strong passion for developer productivity—reflected in my integration of AI tools like GitHub Copilot to cut dev time and reduce bugs. What sets me apart is my AI-first mindset and ability to bridge backend engineering with real-world impact. I’ve led engineering teams, migrated entire platforms to the cloud, and worked across domains including payments, agency banking, and data-driven agriculture solutions. I’m not just building systems—I’m building for scale, reliability, and user success. --- Employment and project experience Lead Developer – Paysure Technologies Ltd _July 2022 – Present_ - Built and managed scalable Spring Boot microservices handling thousands of users. - Migrated platform to AWS (Lambda, ECS, RDS), reducing infra cost by 25%. - Boosted dev speed by 30% by integrating GitHub Copilot and optimizing pipelines. Backend Developer (Contract) – Pullus Africa _August 2021 – July 2022_ - Built poultry/agri-tech backend used by 5,000+ users. - Implemented inventory and geolocation systems, improving logistics and profit.…I'm a developer who specializes in building scalable backend systems with Spring Boot and cloud-native technologies from Nigeria. I’m Segun Kasim, a Java backend developer with over 3 years of experience architecting and implementing microservices, cloud integrations, and performance-critical systems for the fintech and agri-tech sectors. I thrive in high-impact environments where speed, security, and scalability are critical. My expertise spans Spring Boot, PostgreSQL, AWS, Docker, and CI/CD pipelines, and I have a strong passion for developer productivity—reflected in my integration of AI tools like GitHub Copilot to cut dev time and reduce bugs. What sets me apart is my AI-first mindset and ability to bridge backend engineering with real-world impact. I’ve led engineering teams, migrated entire platforms to the cloud, and worked across domains including payments, agency banking, and data-driven agriculture solutions. I’m not just building systems—I’m building for scale, reliability, and user success. --- Employment and project experience Lead Developer – Paysure Technologies Ltd _July 2022 – Present_ - Built and managed scalable Spring Boot microservices handling thousands of users. - Migrated platform to AWS (Lambda, ECS, RDS), reducing infra cost by 25%. - Boosted dev speed by 30% by integrating GitHub Copilot and optimizing pipelines. Backend Developer (Contract) – Pullus Africa _August 2021 – July 2022_ - Built poultry/agri-tech backend used by 5,000+ users. - Implemented inventory and geolocation systems, improving logistics and profit.WWWW…