Looking for a job

Praise Aribisala

@praisearibisala

Backend Security Engineer at ApexLearn securing backend APIs; previously built a learning platform with 90+ secured REST endpoints.

Nigeria

Message

At ApexLearn, I secure backend applications and APIs by testing for vulnerabilities across authentication, authorization, and application logic. I also review pull requests for insecure patterns and help engineers remediate security issues.

At Mindcraft Coaching Foundation, I designed and built a production Learning Management System with 90+ secured REST endpoints and support for 10,000+ content and assessment records. I optimized database queries and API response handling, reducing average response time by approximately 40% under concurrent usage.

I’ve also built backend services for Mintwork’s NFT workflow platform and contributed to Agromall’s distributed services. In projects, I built a financial SaaS platform with third-party financial API integrations and an AI learning platform with a RAG pipeline using Gemini and Qdrant.

Experience

Work history, roles, and key accomplishments

Current

Backend Security Engineer

Current

ApexLearn

Securing backend applications and APIs, focusing on identifying and mitigating vulnerabilities across authentication, authorization, and application logic. Performing penetration testing and reviewing pull requests with a security focus.

NestJS PostgreSQL Docker Security Testing Penetration Testing API Security Authentication Authorization

Full-Stack Software Engineer

Mindcraft Coaching Foundation

Jun 2025 - Aug 2026 (1 year 2 months)

Designed and built a production Learning Management System using Next.js, Node.js, Express.js, and MongoDB, supporting 300+ active users. Built and secured 90+ RESTful API endpoints with JWT authentication, role-based authorization, CSRF mitigation, and input validation.

Next.js NodeJS ExpressJS MongoDB JWT RBAC CSRF Prevention Input Validation REST APIs Database Optimization

Backend Engineer Intern

VigiLearn

Aug 2025 - Oct 2025 (2 months)

Built backend education services using C#, ASP.NET Core, Entity Framework Core, and SQL Server. Designed RESTful APIs for authentication, authorization, and content delivery using Clean Architecture principles.

C#ASP.NET Core Entity Framework Core SQL Server REST APIs JWT RBAC Swagger OpenAPI

Software Engineer Intern

ALX Africa

Jul 2023 - Dec 2024 (1 year 5 months)

Completed intensive training in algorithms, data structures, system programming, operating systems, networking, and collaborative software engineering. Built low-level projects including a custom printf implementation and a Unix shell.

Algorithms Data Structures System Programming Operating System Networking Python Flask NodeJS Git

Backend Engineer

Agromall

Contributed to backend services within a distributed architecture spanning approximately 14 repositories. Maintained and extended services across a multi-service codebase, coordinating changes between interconnected backend components.

Distributed Systems Backend Services Microservices

Backend Engineer

Mintwork

Built backend services for a platform that aggregated NFT minting workflows from multiple external platforms. Developed Node.js services integrating external blockchain platforms and handling wallet interactions and mint-flow logic.

NodeJS REST APIs Blockchain Integrations Third Party APIs

Backend Engineer Intern

RiseVest

Gained hands-on backend engineering experience within a fintech and investment-product environment. Worked with backend development practices involving security, reliability, and data handling for financial applications.

Backend Development Security Reliability Data Handling

Education

Degrees, certifications, and relevant coursework

ALX Africa

Software Engineering Program, Software Engineering

2023 - 2024

Completed intensive training in algorithms, data structures, system programming, operating systems, networking, and collaborative software engineering.