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@olufemibanji-ajayi
Senior software engineer focused on scalable backend systems and cloud architecture.
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.
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Work history, roles, and key accomplishments
SS&C
Aug 2022 - Present (3 years 3 months)
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.
Acuity Ads
Aug 2021 - Present (4 years 3 months)
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.
Irestify
Mar 2021 - Jul 2021 (4 months)
Contributed backend and frontend features for the main Irestify application using NestJS and React, delivering production-ready functionality within a short contract.
Ovations Group Pty
Jul 2018 - Feb 2021 (2 years 7 months)
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.
Degrees, certifications, and relevant coursework
Bachelor of Science, Computer Science
Bachelor of Science in Computer Science from the University of South Africa.
Software and tools used professionally
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
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