Developed a new Java based Quarkus application deployed as an AWS Lambda for centralizing a profile linking feature, integrating it with a worker provisioning service via GraphQL. He contributed to the core application that was built with Play framework, fixing bugs, and extending or creating new features, such as a dynamic user feature, based on attributed worker role. Contributed to the features of a data pipeline, for sending data to third parties, in real time, using Aurora Trigger, AWS Lambda, S3 bucket Continuous Integration: Added AWS Code Pipeline integration for new services Tools & Technologies: Java, Play framework, Postgres(AWS RDS), Quarkus, GraphQL, AWS Lambda, AWS CloudFormation, AWS CodeBuild, Typescript

As a lead software engineer, Toyin works primarily on a Human Manager Solution using Spring cloud, Angular, Oracle 11g, and at the same time leading a team of developers Achievements: Developed and implemented plans to ensure the stability of the application, which now has a positive reviews from increasing customers. This has helped the company in retaining customers and onboarding several others by recommendation. Redesigned some components in the backend to facilitate multi-country feature, this has projected to have new customer base in Ghana and Rwanda, with the posiibility of extending to all African countries. Designed an API integration service to enable third parties create customized front-end solution while integrating with the newly provisioned endpoints. This has massively increased the number of clients who want to implement their front-end. Made some suggeestions that improved the work process between the Development, Product and QA team, eliminating some bottlenecks in the previous process and optimizing delivery time of sprint tickets. Technology Stack: Java (Hibernate, JPA), Java, Oracle 11g, Mongo DB, Kafka, Redis, Spring boot, Angular, JavaScript (TypeScript, jQuery), Docker, HTML, CSS, Junit, Mockito

Enhancement of the E-payment application (FirstBills Pay) built for First Bank of Nigeria, with Spring boot, by improving application performance, fixing bugs and adding additional features. Adaption of the E-payment application to multi currency mode for deployment in Zaire and any prospective country with multi currency. Redesigning the monolithic payment application to a microservice architecture using spring cloud, and ensuring the models are rightly partitioned across business domains, also facilitating communication between services via message broker and rest template as required. Technology Stack: Java (Hibernate, JPA), Java, Oracle 11g, Mongo DB, Kafka, Redis, Spring boot, Angular, JavaScript (TypeScript, jQuery), Docker, HTML, CSS

Implementation of a payment collection application from merchants’ customers for Coronation Merchant Bank, with Spring framework and spring acl for Coronation Merchant Bank, Nigeria, this significantly increased income of the bank from their in-house products. Implementation of a middleware wrapped around NIBBS apis for SIM swap detection during mobile payment processing. Implemetation of an auto fee collection app, for scheduling automatic debit of customer account for different charges owned to the bank. This significantly reduced income lost by bank from customer charges. Technology Stack: Java (Hibernate, JPA), Oracle 11g, Postgres, Kafka, Redis, Spring boot, Angular, JavaScript (TypeScript, jQuery), Docker, HTML, CSS

Implementation of additional features and integration of biometric devices to a Java desktop based application for National Identity Enrollment Implementation of a web based app with Ninja framework and Postgres database for managing and monitoring activities of the Identity Enrollment desktop applications which are dispersed across the country and diaspora. Technology Stack: Java (Hibernate, JPA), Ninja Framework, Postgres, Redis, Angular, JavaScript (TypeScript, jQuery), Docker, HTML, CSS

Development of a Cash Transfer Application from Transfast API on Access bank Nigeria Plc platform with JSF 2.2, JEE webservices and EJB Development of an Admin Portal and customer onboarding service for a Payment app with Scala and Play Framework. Technology Stack: Java (Hibernate, JPA), JSF 2.2, EJB, Oracle 11g, Scala, Kafka, Lagom Framework, Spring boot, Play Framework, JavaScript (TypeScript, jQuery), HTML, CSS

Active participation in the design sessions of the development of an e-payment(Ebillspay) application with Spring boot via dynamic form generation and data validation via external apis. Revamp of an existing e-payment application, to facilitate reduction of merchant/products onboarding from days/weeks to minutes. Java (Hibernate, JPA, jaxb), MySQL 11g, ActiveMQ, Redis, Spring boot, Thymeleaf, JavaScript (jQuery), HTML, CSS

Test driven development of applications with MEAN stack, notably contributing to the development of Kaizen web application, an in-house application for staff’s performance tracking and continous improvement Technology Stack: Javascript, Nodejs, Express.js, Postgres, ActiveMQ, Redis, AWS SQS, HTML, CSS

Customization of Finacle(ver 10) core banking application with unix shell, oracle 11g, javascript, finacle script, and Java webservice technologies for a number of Nigerian banks. Technology Stack: Javascript, Oracle 11g, Unix, Java, Java webservice, Finacle scripting.

Development of a web based Selenium test with Junit and documentation of test scripts. Development of new and modification of existing modules of an Electronic Medical Records application built with JSF 2.0, Postgres and Primefaces 3.5 Technology Stack: Java, JSF 2.0., Postgres, Primefaces 3.5, HTML, CSS