Backend Software Developer | AWS Certified Cloud Practitioner

Backend Development with PHP, Laravel and Node.js
Expertise in building large database-driven ERP systems using PHP 8+, Laravel (Eloquent, Migrations, Controllers), Node.js and Express. Development of REST APIs, Webhooks, Authentication and Authorization for secure and scalable backend solutions.

Database Design and Query Optimization
Proficiency in MySQL/MariaDB, PostgreSQL and AWS RDS. Design and optimization of complex database queries, achieving significant performance improvements such as reducing query refresh time from 45 seconds to 3 seconds with a 70% cost saving.

Cloud and DevOps with AWS
Hands-on experience with AWS EC2 Ubuntu, VPC, IAM, S3, Git and Linux Server environments. Deployment of live banking systems on AWS EC2 with high STK success rates and cost-optimized RDS configurations.

Fintech Integration with MPESA Daraja API
Integration of Safaricom MPESA Daraja API including STK Push, Callback URL handling and secure storage of payment callbacks in RDS, enabling live payment flows within ERP systems.

Data Analytics and Business Intelligence with Power BI
Use of Power BI Desktop via native MySQL connector and DAX measures for reporting and analytics, including calculation of total transaction volumes, success rates and active member counts.

Version Control and Deployment with Git
Consistent use of Git for source control and deployment workflows across platforms such as Render and Vercel, supporting collaborative and production-grade software delivery.

Redis, Queues, Cron Jobs and Background Jobs
Knowledge of Redis concepts, queue management, cron jobs and background job processing to support asynchronous and scalable application architectures.

JSON and Third-Party API Integrations
Experience working with JSON data formats and integrating third-party services and APIs, including payment gateways and external data sources, into backend systems.