Junior Full-Stack Developer

Overview

We're looking for a motivated Junior Full-Stack Developer with a solid grounding in Python, React, and API integration to join a fast-growing PropTech startup. Our client is a production-grade SaaS platform revolutionising how construction professionals manage pricing and tenders.

By leveraging advanced computational logic and AI, the platform transforms a 5-day manual process into minutes. This is a hands-on engineering role where you will work across the full stack, contribute to real features used by real clients, and grow quickly under the guidance of an experienced lead developer.

NB! Applicants must reside in and be citizens of South Africa.

Tasks include:

• Python Backend Development: Build and maintain RESTful API endpoints using Python and Flask, contributing to business logic for BOQ processing and user management.

• API Integration: Assist in integrating third-party and AI-driven APIs, including working with the Anthropic Claude API that powers the platform’s computational pricing engine.

• Frontend Development: Develop and maintain responsive user interfaces using React, ensuring a polished experience across devices.

• Data Processing: Contribute to document processing pipelines handling PDF, Excel, and Word files for BOQ uploads and report exports.

• Database Work: Write clean queries and support schema work using SQLAlchemy and PostgreSQL under senior guidance.

• Code Quality: Write tested, well-documented code and participate in code reviews and sprint planning.

• DevOps Contribution: Support CI/CD workflows, containerisation, and deployment tasks as you grow into the role.

Technical Requirements:

The "Must-Haves"

• Python Proficiency: Solid working knowledge of Python 3.10+, ideally applied in a professional or project context.

• Integration Experience: Demonstrated ability to integrate third-party APIs — AI or LLM API experience is a strong advantage.

• React: Functional components, hooks, and basic state management. Ability to build and extend responsive UIs.

The Full Stack

• Backend: Flask (or similar framework). Understanding of REST API design, authentication, and session management.

• Data Tools: Familiarity with Pandas and NumPy for data manipulation.

• Databases: Working knowledge of PostgreSQL and SQLAlchemy ORM.

• Document Processing: Exposure to libraries such as ReportLab, openpyxl, python-docx, or PDF parsing tools is a plus.

• DevOps: Basic Git workflows, some exposure to Docker and Linux environments.

Experience Level

• 1–2 years of professional experience, or strong portfolio/project evidence of full-stack development.

• Exposure to a production SaaS environment or startup context is an advantage, not a requirement.

Competencies:

• Ownership: You take responsibility for what you build and see tasks through to completion.

• Problem Solving: You break down unfamiliar problems and ask the right questions rather than guessing.

• Communication: You articulate blockers and progress clearly, in writing and in conversation.

• Curiosity: You are actively learning, stay current with emerging tools, and are drawn to AI-driven development.

• Adaptability: You are comfortable wearing multiple hats in a small, fast-moving team.

What’s in it for you:

• Competitive Package: Market-related salary.

• Remote-First Culture: Fully remote/hybrid flexibility within South Africa.

• Real Impact: Your code ships to active users solving genuine problems in the construction industry.

• AI Exposure: Hands-on experience building with LLM-driven workflows and modern AI APIs.

• Growth Path: Work directly with a lead developer and founding team, with clear scope to grow as the business scales.