John-Daniel Ikechukwu
@john-danielikechukwu
I build secure, scalable Java backend platforms for fintech, commerce, IoT, and Web3.
NigeriaWhat I'm looking for
At Semicolon Africa Labs, I architected ClyraFi, a multi-tenant Wallet-as-a-Service platform supporting secure transactions, reconciliation, and escrow workflows. I reduced API failure rates by 60% through distributed-service redesign, stronger integration testing, and Test-Driven Development.
I'm building high-concurrency commerce services for Chop n Chop, including consistent inventory allocation and payment workflows. I've also delivered RFID event-processing systems with sub-100 ms processing, Kubernetes node configurations, REST integrations, and Rust smart contracts for decentralized applications.
Experience
Work history, roles, and key accomplishments
Backend Engineer
Chop n Chop
Jan 2026 - Present (7 months)
Designed and implemented backend services for a high-concurrency commerce platform using Java, Spring Boot, PostgreSQL, and Redis. Built RESTful APIs for order processing, inventory management, and payment workflows with a focus on consistency and scalability.
Backend Engineer
Semicolon Africa Labs
Jan 2025 - Dec 2026 (1 year 11 months)
Architected and developed a multi-tenant Wallet-as-a-Service platform using Java, Spring Boot, PostgreSQL, and Redis, supporting secure transaction processing, automated reconciliation, and escrow workflows. Reduced API failure rates by 60% by redesigning distributed services, strengthening integration testing, and introducing Test-Driven Development (TDD).
Backend & Hardware Integration Engineer
Semicolon Africa Labs
Built a real-time RFID attendance platform integrating ESP32 devices with Java Spring Boot backend services alongside a team of four engineers. Developed resilient event-processing pipelines with complete auditability and sub-100 ms processing.
Education
Degrees, certifications, and relevant coursework
University of the People
Bachelor of Science, Computer Science
Pursuing a Bachelor of Science in Computer Science.
Semicolon Africa
Certificate, Software Engineering
2024 - 2025
Completed an intensive software engineering program focused on backend development and system design.
Henley Business School
Diploma, Business Administration and Management
Earned a Diploma in Business Administration and Management.
Tech stack
Software and tools used professionally
Availability
Location
NigeriaAuthorized to work in
Job categories
Skills
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