Junior Backend Software Engineer
Python • Django • C# • ASP.NET Core • REST APIs • Secure Systems

I’m a Junior Backend Software Engineer with hands-on experience building secure, production-ready backend systems using Python/Django and C#/.NET.

My work focuses on:

• Designing clean, scalable RESTful APIs
• Implementing authentication & authorization (JWT, Refresh Tokens, RBAC)
• Building data-driven and NLP-powered backend services
• Working with relational databases and backend architecture best practices

I’ve built real-world backend systems across fintech, authentication, analytics, and marketplace platforms, with a strong emphasis on security, reliability, and maintainability.

Diploma in Information Technology
Richfield Graduate Institute of Technology — 2025

• Distinctions: Internet Programming, Information Systems, Business Communication
• Relevant Coursework: Data Structures & Algorithms, Databases, Operating Systems, Software Engineering, Networking

• Python
• C#
• SQL
• Java

• Django
• Django REST Framework
• ASP.NET Core (.NET 9)
• RESTful API design
• Authentication & Authorization (JWT, Refresh Tokens, RBAC)
• Swagger / OpenAPI
• PyTest (unit & integration testing)

• SQL Server
• PostgreSQL
• MySQL
• SQLite
• Entity Framework Core (EF Core)

• Docker
• Git & GitHub
• GitHub Actions (CI/CD)
• AWS (EC2, S3, RDS, ECS)
• Gunicorn
• Postman

• Pandas, NumPy
• Scikit-Learn
• TensorFlow / Keras
• spaCy
• Hugging Face Transformers

July 2025 – October 2025

• Designed 5+ relational backend models, improving data integrity and normalization
• Built 8+ RESTful APIs following real-world integration patterns
• Implemented role-based access control (RBAC) for secure authentication flows
• Participated in 10+ code reviews, improving maintainability and documentation

Django • Django REST Framework • NLP • Docker
🔗 https://github.com/Lesego-1/Customer-Dispute-Classification

• Built an NLP-powered backend service for classifying and summarizing bank customer complaints
• Predicts dispute escalation risk and generates automated summaries
• Designed REST APIs handling model inference, scoring, and response formatting
• Enabled data-driven prioritization of high-risk complaints
• Containerized for reproducible deployment

C# • ASP.NET Core (.NET 9) • SQL Server • JWT
🔗 https://github.com/Lesego-1/User-Authentication-API

• Developed a secure authentication API using ASP.NET Core
• Implemented:
  • JWT authentication
  • Refresh token rotation
  • Role-based authorization (Admin/User)
• Used Entity Framework Core with SQL Server
• Documented and tested endpoints using Swagger UI
• Applied industry-standard security practices

Django • REST APIs • Backend Architecture

• Led a 5-member team building a full-featured marketplace platform
• Designed backend systems for:
  • User authentication and RBAC
  • Listings, messaging, moderation, and admin tools
• Implemented search and filtering logic for improved discovery
• Achieved ~80% backend test coverage on critical functionality

Django • NLP • Backend Processing

• Built an ATS-style resume matching system using NLP
• Extracted and compared keywords between resumes and job descriptions
• Generated match scores and actionable feedback
• Designed secure server-side processing with no data persistence
• Fully deployable using Gunicorn

Python • NLP • Deep Learning

• Built an LSTM-based sentiment analysis system achieving 84% accuracy
• Implemented Aspect-Based Sentiment Analysis (ABSA) for fine-grained insights
• Automated extraction of product/service aspects and sentiment polarity
• Designed preprocessing pipelines for unstructured text data

Django • Machine Learning • Data Analysis

• Built an end-to-end backend system predicting term deposit subscriptions
• Trained Random Forest models achieving ~80% accuracy
• Implemented real-time prediction logic for user input
• Prepared data for analytical dashboards and reporting

• Advanced ASP.NET Core backend patterns
• Secure authentication & authorization systems
• Backend system design and scalability
• API performance optimization
• Production-ready NLP-backed services