# OLUFEMI Banji-Ajayi OLUFEMI Banji-Ajayi is a remote worker on Himalayas, Senior Software Engineer at SS&C, based in Canada. Source: https://himalayas.app/@olufemibanji-ajayi ```text Senior software engineer focused on scalable backend systems and cloud architecture. ``` | Detail | Value | | --- | --- | | Availability | Open to opportunities | | Location | Canada | | Authorized to work in | Canada | | Job categories | Senior Software Engineer, Software Engineer, Backend Engineer, Cloud Engineer, Site Reliability Engineer, DevOps Engineer, Full Stack Engineer, Technical Lead, Software Architect, Machine Learning Engineer, Senior Software Developer, Senior Engineer, Senior C# .NET Software Engineer | | Skills | Java, Spring Boot, Spring MVC, Angular, React, TypeScript, NodeJS, NestJS, Python, PostgreSQL, Patroni, MySQL, MongoDB, DynamoDB, Redis, Hazelcast, Consul, Kong Gateway, Keycloak, Docker, Kubernetes, Jenkins, Ansible, Bamboo, Grafana, Prometheus, Loki, Hibernate, MyBatis, EC2, Git, Nginx, Microservices, CI CD, Tomcat, WildFly, RabbitMQ, Kafka, React Native, Junit, Selenium, BASH, Chai, Druid, Firebase, GraphQL, HAProxy, Java 8, Java EE, Jira, Kotlin, Linux, Mocha, Mockito, Navicat, Port, SQL, Splunk, Spring Security, Visual Studio, Visual Studio Code, Windows, XML, Etcd, Thyme Leaf | ## What I'm looking for ```text I seek challenging roles building highly available, distributed systems in cloud or private-cloud environments, with ownership of architecture, CI/CD, and production reliability. ``` ## About ```text I am a versatile senior software engineer with over 14 years in IT and more than 10 years of hands-on software development experience, currently working in Canada and pursuing studies in machine learning. I design, build, and deploy highly available, distributed systems that serve thousands to millions of users, with experience across authorization, document management, billing, payment, and web content systems. At SS&C I led the design and deployment of a Central Authorization Bridge serving millions of users, built a document management system, and created deployment scripts for Kong, Patroni, Redis/Sentinel, and Hazelcast in a private cloud. I have strong experience with Java/Spring Boot, Postgres (Patroni), Python, Kong Gateway, HashiCorp Vault, Keycloak, Redis, Hazelcast, Docker, Kubernetes, and CI/CD tooling. I deliver end-to-end features, take ownership of complex projects, and collaborate with stakeholders to translate requirements into production-ready services. I also have mobile and frontend experience (React, Angular, React Native) and have contributed to large-scale systems in South Africa, Nigeria, and Canada, with certifications in Oracle SQL and PMP. ``` ## Experience ### Senior Software Engineer (current) SS&C. Aug 2022 - Present ```text Designed, built and deployed a Central Authorization Bridge and related services for financial clients, improving availability for systems serving millions of users and delivering deployment automation for Patroni, Kong and Redis/Sentinel. ``` Skills: Java, Spring-Boot, Kong, Redis, Hazelcast, BASH ### Senior Software Engineer (current) Acuity Ads. Aug 2021 - Present ```text Developed and migrated features for an advertising system, implemented Pixel Health feature as sole developer, and rewrote APIs using strategy patterns to improve reliability and maintainability. ``` Skills: Java-8, Spring-Boot, MyBatis, Docker, MySQL, Spark, Code-Review ### Senior Software Engineer Irestify. Mar 2021 - Jul 2021 ```text Contributed backend and frontend features for the main Irestify application using NestJS and React, delivering production-ready functionality within a short contract. ``` Skills: NestJS, React, TypeScript, REST-APIs, Frontend, Unit-Testing ### Software Engineer Ovations Group Pty. Jul 2018 - Feb 2021 ```text Built web services and revenue-generating consumer platforms for telecom and financial clients, automated insurance processes with stored procedures, and deployed solutions to AWS serving millions of users. ``` Skills: S3, Java-EE, Spring-MVC, SOAP, Jenkins, EC2, API-Gateway, SQL-Server, MySQL ### Software Engineer Adroyte Pty. Jan 2015 - May 2018 ```text Developed microservices for prepaid/postpaid vending and payment integrations (IPAY), implemented CI pipelines, and built data-collection services for field operations. ``` Skills: Java-EE, Jenkins, MySQL, Bamboo, USSD-SMS-Integrations ### IT Personnel / Developer GIT Limited. Jun 2010 - Dec 2013 ```text Developed CRM database integrations and refactored components for an enterprise law reporting product, providing system support and enhancing application stability. ``` Skills: MySQL, Java-EE, Tomcat, JDBC ## Education ### University of South Africa Bachelor of Science, Computer Science ```text Bachelor of Science in Computer Science from the University of South Africa. ``` ## Tech stack - Splunk - Druid - Amazon EC2 - Kubernetes - Jenkins - React Native - Navicat - DB - Patroni - MySQL - Spring Boot - NestJS - Spring MVC - Redis - Visual Studio - Jira - Java 8 - Thymeleaf - Mocha - Chai - Java - Kotlin - Java EE - XML - HAProxy - Loki - RabbitMQ - Grafana - Prometheus - MyBatis - etcd - Linux - Windows - GraphQL - Firebase - Spring Security - Ansible - JUnit - Mockito - Visual Studio Code - Keycloak - NGINX - SQL - Kong Gateway - Port - Bash To contact OLUFEMI, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire). ## People also viewed - [Cedric Kagabo](https://himalayas.app/@cedrickagabo): Software Developer, YULCOM - [upma gupta](https://himalayas.app/@upmagupta): Senior Software Engineer, DataDynamics - [Amitosh Jain](https://himalayas.app/@amitosh): Senior Software Engineer, Old Dominion Freight Line - [Rey Loquinario](https://himalayas.app/@reyloquinario1): Senior Software Engineer, Nike - [Taiwo Oyewole](https://himalayas.app/@taiwooyewole): AI Software Engineer, Tetra Tech - [Ashokgupta Vecham](https://himalayas.app/@ashokguptavecham): Senior Software Developer, AirCanada - [Alhamza Aljamaly](https://himalayas.app/@alhamzaaljamaly): Senior Software Engineer, Just Eat Takeaway - [preston williams](https://himalayas.app/@Kingsley_Uwakwe): Senior Software Engineer, Ordibl & Aivira.ai - [Hamza Raja](https://himalayas.app/@hamzaraja): Senior Software Engineer, Iversoft - [Afeez Irekeola](https://himalayas.app/@afeezirekeola): Software Engineer, Solution Tek Inc