EMMANUEL EJEREJE UCHIVWOGHENE
Ughelli
Summary
Results-driven Backend and Full-Stack Developer with proven entrepreneurial success building and deploying SaaS solutions that solve real business problems. Creator of Smart Sales App, currently serving 5 companies and eliminating fraud through automated receipt generation and sales tracking. Expert in designing secure, scalable web applications using Spring Boot, Kotlin, and React. Demonstrated ability to understand business pain points and deliver production-ready systems that drive measurable impact including reduction in theft and fraudulent transactions.
Overview
3
3
years of professional experience
Work History
Full-Stack Developer & Software Entrepreneur
Smart Sales App - SaaS Product
Delta State, Nigeria
10.2025 - Current
- Founded and developed production SaaS application serving five active companies, automating record-keeping processes.
- Engineered automated receipt generation system, eliminating handwritten records and preventing price manipulation.
- Implemented tamper-proof digital receipts to address receipt fraud, sales falsification, and inventory theft.
- Built comprehensive backend using Spring Boot and Kotlin, incorporating JWT authentication and CSRF protection.
- Designed intuitive frontend interface with React and TypeScript for varied technical skill levels.
- Deployed application to Linux (Ubuntu) VPS with SSL certificates, ensuring production-grade performance.
- Implemented real-time sales tracking and inventory management, enabling rapid identification of discrepancies.
- Delivered measurable business impact with significant reduction in fraudulent transactions reported by clients.
Backend Developer
Independent Project
Delta State, Nigeria
08.2024 - Current
- Architected and developed a complete backend system for hotel management from concept to completion
- Built comprehensive backend infrastructure using Spring Boot, Kotlin, and Spring Security with JWT authentication
- Implemented complex business logic including room booking workflows, transaction handling, and payment processing
- Engineered secure authentication flows and authorization mechanisms to protect sensitive hotel and payment data
Backend Developer Intern
Ventis Inc.
01.2023 - 02.2024
- Completed intensive Ventis Backend Engineering Academy training prior to internship placement.
- Developed and maintained backend services with Spring Boot and Kotlin in a collaborative environment.
- Designed secure RESTful APIs featuring JWT authentication and role-based access control.
- Integrated PostgreSQL databases using JPA and Hibernate for optimized data management.
- Participated in agile development team, engaging in code reviews and adhering to deployment standards.
- Applied software engineering best practices, including clean code principles and SOLID design patterns.
Education
Backend Engineering Training - Java/Kotlin backend development, API design, database management, production deployment practices
Ventis Academy
Delta State, Nigeria02-2023
Bachelor's Degree - Biological Sciences
Niger Delta University
Bayelsa State, NigeriaFrontend Development Training - HTML5, CSS3, JavaScript, React framework
Code Badger Academy
Delta State, NigeriaSkills
- Spring Boot and Kotlin
- Java and Spring Security
- JWT authentication
- JPA and Hibernate
- RESTful API design
- React, TypeScript, and JavaScript
- HTML5 and CSS3
- PostgreSQL and MySQL
- CSRF protection
- Role-based access control
- Stateless session management
- Linux (Ubuntu) administration
- VPS deployment
- SSL/TLS configuration
- Nginx reverse proxy setup
- IntelliJ IDEA and Git proficiency
- GitHub collaboration
- Postman API testing
- VSCode development environment
Languages
- Kotlin
- Java
- TypeScript
- JavaScript
Hobbies and Interests
- Backend architecture
- API design
- Full-stack development
- Cloud infrastructure
- Security best practices
Availability
Immediate
Key Projects And Achievements
- Smart Sales App - Production SaaS Platform, Successfully launched and scaled SaaS product to 5 active business clients across multiple industries. Eliminated manual record-keeping vulnerabilities by implementing automated, tamper-proof digital receipt system. Reduced client fraud losses by preventing handwritten receipt manipulation and hidden sales that previously hurt businesses. Built multi-tenant architecture supporting concurrent businesses with isolated data and role-based permissions. Delivered quantifiable business value: clients identified and removed dishonest employees through transparent sales tracking.
- Hotel Management Backend System, Designed and developed a complete backend API system for hotel management operations. Implemented secure multi-role authentication supporting hotel owners, staff, and administrators. Built scalable transaction processing system with support for multiple payment methods.
- Enterprise-Grade API Development, Created RESTful APIs with comprehensive security measures including JWT tokens and CSRF protection. Designed database schemas optimized for complex relational data and transaction integrity. Implemented role-based access control ensuring proper authorization across different user types.
Timeline
Full-Stack Developer & Software Entrepreneur
Smart Sales App - SaaS Product
10.2025 - Current
Backend Developer
Independent Project
08.2024 - Current
Backend Developer Intern
Ventis Inc.
01.2023 - 02.2024
Backend Engineering Training - Java/Kotlin backend development, API design, database management, production deployment practices
Ventis Academy
Bachelor's Degree - Biological Sciences
Niger Delta University
Frontend Development Training - HTML5, CSS3, JavaScript, React framework
Code Badger Academy