Raji Olatubosun Joshua

About me

Backend and cloud-focused engineer building production systems with Python, FastAPI, Docker, and AWS. I work across the full backend lifecycle: designing APIs, containerizing services, and deploying to cloud infrastructure.

Focused on writing clear, maintainable code paired with solid infrastructure fundamentals. Currently deepening skills in DevOps, DevSecOps, and platform engineering.

Featured Projects

Real-world security automation and cloud infrastructure projects.

Python

FastAPI PostgreSQL Docker Compose Pydantic

Todo API

RESTful Backend

Built a RESTful Todo API using FastAPI and PostgreSQL with strict Pydantic data validation to prevent injection attacks. Orchestrated with Docker Compose for seamless networking.

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Python REST API SQLAlchemy Docker

Notes API

Backend Development

A RESTful Notes API built with Python for creating, reading, updating, and deleting notes. Features SQLAlchemy ORM and containerized deployment.

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AWS Cloud

Python Boto3 AWS Lambda Terraform

S3 Auto-Remediation Bot

Serverless Security Automation

Designed a serverless security system using AWS EventBridge and Lambda to detect insecure public S3 buckets in real-time. Automated remediation reduces exposure time to under 2 seconds.

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Python Docker AWS IAM CI/CD

IAM Security Audit Tool

Automated Compliance Scanning

Python script to audit AWS IAM users for security gaps like missing MFA, stale access keys, and permissive policies. Integrated into CI/CD for weekly compliance reports.

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Security

Nmap Wireshark OPNsense tcpdump

Network Security

Firewall & Traffic Analysis

Configured OPNsense firewall for restrictive filtering. Conducted vulnerability assessments using Nmap and analyzed network traffic with Wireshark and tcpdump to detect malicious activity.

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NIST Framework Incident Analysis Security Reports

Incident Response & Handling

Security Incident Management

Rapidly identified security incidents using advanced monitoring techniques. Analyzed incident reports using the NIST Cybersecurity Framework to determine scope and impact.

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nping3 iptables netstat DDoS Mitigation

DoS SYN Flood Attack Simulation

Attack Detection & Mitigation

Simulated SYN flood attacks using nping3, detected excessive SYN-RECV connections with netstat, and implemented iptables firewall rules to block malicious traffic and mitigate the attack.

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