Ajayi Samuel

Results-driven Senior Software Engineer with over 8 years of experience designing, developing, and maintaining enterprise-grade software solutions. Strong expertise in C#, ASP.NET Core, Web APIs, SQL Server, and distributed systems architecture. Proven track record of building scalable backend services, optimizing application performance, and delivering secure, high-availability business applications.

Experienced in mentoring developers, conducting code reviews, and implementing software engineering best practices using SOLID principles and design patterns.

Senior Software Engineer - Syssoft Consultant Limited - Lagos, Nigeria

(2022-09)

• Designed and developed enterprise applications using C#, ASP.NET Core, and SQL Server.
• Built scalable RESTful APIs supporting high-volume business transactions.
• Architected backend services following SOLID principles and Clean Architecture standards.
• Developed microservice-based solutions to improve system scalability and maintainability.
• Implemented secure authentication and authorization mechanisms using JWT and role-based access controls.
• Optimized SQL queries and application performance, reducing response times and improving user experience.
• Conducted code reviews and mentored junior developers on coding standards and best practices.
• Collaborated with project managers, business analysts, and QA teams to deliver high-quality software solutions.
• Supported cloud deployments using AWS infrastructure and Docker containers.

Backend Software Developer - Onyx Data System - Ikeja, Lagos

(2021-09 - 2022-08)

• Developed and maintained backend systems using C# and RESTful APIs.
• Designed and optimized relational database structures and SQL queries.
• Integrated third-party services and enterprise systems through secure APIs.
• Participated in system design discussions and technical architecture planning.
• Assisted in troubleshooting and resolving production issues.

Full Stack Developer - Mostmerit World Link - Ogun State, Nigeria

(2018-09)

• Built business management and web-based applications using .NET technologies.
• Developed reporting modules and administrative dashboards.
• Implemented API integrations and database management solutions.
• Maintained application security, reliability, and performance.

Bachelor of Science (B.Sc.) - Computer Science - Chukwuemeka Odumegwu Ojukwu University