Gontse Sebolai.

Experience.

1. Freelance Software Developer

   Dev404 Labs (Self-employed)2024 – Present

   Delivering web applications for South African brands, non-profits and small businesses. Managing the project lifecycle from requirements gathering through implementation, handover and release coordination.

   • Built and delivered client work across React, Next.js, and static site stacks
   • Managed client relationships, timelines, and iterative feedback cycles
   • Integrated payment and database-backed workflows using Paystack and Supabase

2. Academic Project Developer

   Varsity College2022 – 2026

   Developed full-stack applications across web and mobile platforms as part of the Web and Application Development programme, following structured methodologies and industry best practices.

   • Built ASP.NET Core applications with role-based access control and audit logging
   • Developed a Python Entelect GP hackathon solver with validation, scoring and deterministic optimisation checks
   • Contributed to native Android applications using Kotlin and Jetpack Compose within academic team projects
   • Worked in Agile academic teams with peer code reviews and sprint retrospectives

Technical skills.

• Languages

  C# · TypeScript · JavaScript · Python · Kotlin · Java · SQL · HTML · CSS

• Frameworks & Architecture

  ASP.NET Core · Spring Boot · FastAPI · React · Angular · Next.js (App Router) · Jetpack Compose

• Databases

  SQL · PostgreSQL · SQL Server · SQLite · Entity Framework Core · Room · Relational Schema Design

• Platforms & Delivery

  Docker · GitHub Actions · Terraform · Kafka · Azure · Supabase · Git

• Development Practices

  SDLC · Agile · REST APIs · CI/CD · Event-Driven Systems · Observability · Algorithmic Problem Solving

• Testing & Quality

  xUnit · JUnit · Testcontainers · pytest · Playwright · Vitest · Ruff · mypy · ESLint