Charles Megafu

• Development of an application matching solution to account for real-time tracking of applications binary manifest installed across over 50 million devices within our multi-tenancy system

● Development of a security events fairness system that allows for proportionate threat data processing across all Lookout security detection products.

● Development of a risk analysis ingestion solution that intercepts threats and security-based reports from our intelligence system and determines the degree of impact

● Contribute and help refine the team's technical roadmap and ensure we stay laser-focused on the changing engineering technologies.

● Development of a back-office application to manage various tenants and their associated devices which provides visibility to historical threats data with reporting capability to give our customers insight into their overall exposure and frequency of breaches.

● Development of Zero-Trust access to private applications (ZTNA) in hybrid environments (public cloud and data center) from anywhere or devices not associated with a tenant's VPN. This application provides micro-segmentation which helps with stronger enterprise security in order to keep up with the 'Principal of least privilege' and prevents breaches due to lateral movements of malware from compromised devices

● Contributed to re-engineering how we think about data distribution using sharding and regionalization. Helped define a shard application logic to decongest tenants in our premium enterprise application.

● Standardized infrastructure setup using Terraform across all teams by creating a one-stop-shop solution that distributes ASGs to different environments using Spinnaker.

● Mentor senior and junior engineers through code reviews, pair programming, and knowledge sharing.

● Development of a National weather alerting (amber and weather) system that informs Canadians and Americans about amber, weather and environmental situations. This system is integrated with information from various weather providers (Environment Canada, Meteo Alarm and National Weather Service) and government sources (Ontario Provincial Police e.t.c)

● Development and maintenance of the company's core backend system powering the storm center application which informs Canadians of storm related hazards using Geographic Information System

● Development of forecast systems (Global Point Cast) that leverages on models developed by Meteorologists to predict the weather condition on hourly, short term, long term and daily bases.

● Development of a weather observation microservice that informs Canadians in real time about the current weather condition and temperature

● Successfully participated in the decommissioning of a monolith application called DataAccess into scalable microservices with 99.99% uptime

● Setup infrastructure (Standard Pipeline, Kubernetes and Spinnaker) to enable cross-platform teams seamlessly deploy applications in real time without manual intervention

● Setup reusable cloud-infrastructure templates using terraform to enable teams spin up cloud resources (AWS Fargate, AWS SQS, CloudFront, AWS Redshift, GCP PubSub e.t.c) without the hassle associated with manual intervention ● Setup monitoring systems (Grafana, Prometheus, ELK stack, Kiali and Jaeger) to ensure we get notified when problems arise within the 50th and 95th percentile of our traffic

● Technologies: GoLang, Java, JUnit for Test Driven Development, Jenkins, Spinnaker, Terraform, Cloudfront, GOA Framework, JVM, AWS SNS, AWS S3, AWS Fargate, AWS Lambda, AWS Cloudwatch, Google Kubernetes Engine, JFrog (Artifactory), Active MQ, Akka, Elasticsearch, Logstash, Kibana, Prometheus, Redis, Docker, Swagger, MongoDB, Cassandra, Postgres

● Built the Agency Banking Services API currently connected to by all the banks in Nigeria as well as agent managers. Leveraged on the amazing power of Reactive Java (Rx Java) to prevent process blocking; Apache Kafka for messaging; Microsoft SQL for storage; Spring Boot; Elasticsearch, Kibana and Logstash for aggregated logging; Redis for caching. Saw the great benefit of using Java 8 function libraries (Supplier, CompletableFuture and Consumer) while creating a thorough asynchronous API

● Successfully rewrote the EBillsPay platform (a payment collection platform for billers in Nigeria) from a monolith application to a highly specific and decoupled microservices with various data backend. I adopted the use of microservice architecture and aggregated logging system

● Led the team of five Engineers that successfully redesigned the NIBSS Instant Payment platform through improving its performance from handling 1.5 million transactions to over 11 million transactions daily

● Redesigned the Point of Sales terminal architecture that service card payments in Nigeria to leverage on Redis Pub-Sub for transactions processing. This increased customers confidence on the platform as wells increased the volume of transactions from 200,000 to over 500,000 daily (https://nibss-plc.com.ng/pos-live/)

● Designed and developed the QR Code Payment Service used by Payment Service Banks