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Hi, I'm PJ Pretorius, a full-stack software developer based in George, Western Cape, South Africa. I specialize in building scalable web applications and intelligent systems, with experience across front-end and back-end technologies, AI integration, and cloud services. I am passionate about delivering impactful solutions and collaborating with forward-thinking teams to drive innovation and enhance user experience. I thrive on solving complex problems, learning new tech, and delivering user-friendly, robust software that meets real-world needs. I value teamwork, clear communication, and continuous improvement as I contribute to successful product outcomes.…Hi, I'm PJ Pretorius, a full-stack software developer based in George, Western Cape, South Africa. I specialize in building scalable web applications and intelligent systems, with experience across front-end and back-end technologies, AI integration, and cloud services. I am passionate about delivering impactful solutions and collaborating with forward-thinking teams to drive innovation and enhance user experience. I thrive on solving complex problems, learning new tech, and delivering user-friendly, robust software that meets real-world needs. I value teamwork, clear communication, and continuous improvement as I contribute to successful product outcomes.

PJ Pretorius

Full Stack Developer, Web Developer, Back-End Developer, +4

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Hi, I'm PJ Pretorius, a full-stack software developer based in George, Western Cape, South Africa. I specialize in building scalable web applications and intelligent systems, with experience across front-end and back-end technologies, AI integration, and cloud services. I am passionate about delivering impactful solutions and collaborating with forward-thinking teams to drive innovation and enhance user experience. I thrive on solving complex problems, learning new tech, and delivering user-friendly, robust software that meets real-world needs. I value teamwork, clear communication, and continuous improvement as I contribute to successful product outcomes.…Hi, I'm PJ Pretorius, a full-stack software developer based in George, Western Cape, South Africa. I specialize in building scalable web applications and intelligent systems, with experience across front-end and back-end technologies, AI integration, and cloud services. I am passionate about delivering impactful solutions and collaborating with forward-thinking teams to drive innovation and enhance user experience. I thrive on solving complex problems, learning new tech, and delivering user-friendly, robust software that meets real-world needs. I value teamwork, clear communication, and continuous improvement as I contribute to successful product outcomes.

Available to hire

Hi, I’m PJ Pretorius, a full-stack software developer based in George, Western Cape, South Africa. I specialize in building scalable web applications and intelligent systems, with experience across front-end and back-end technologies, AI integration, and cloud services. I am passionate about delivering impactful solutions and collaborating with forward-thinking teams to drive innovation and enhance user experience.

I thrive on solving complex problems, learning new tech, and delivering user-friendly, robust software that meets real-world needs. I value teamwork, clear communication, and continuous improvement as I contribute to successful product outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Afrikaans

Fluent

English

Fluent

Dutch

Intermediate

Work Experience

Back end Systems Engineer at Tsolo Storage Systems Technologies

October 1, 2024 - Present

Architect and maintain petabyte-scale data ingestion infrastructure for the MeerKAT Radio Telescope, ensuring high-throughput, fault-tolerant transfers across federated systems in South Africa’s scientific ecosystem. Design and deploy internal APIs using FastAPI to automate and orchestrate data flows from source to storage, enabling real-time monitoring and operational scalability. Integrate and manage distributed storage backends using iRODS, Rucio, and Ceph-backed S3, supporting mission-critical datasets for astronomical research. Write and maintain robust backend Python services and shell scripts that perform scheduled ingest, replication, verification, and error handling across heterogeneous environments. Implement PostgreSQL-backed metadata services and job tracking systems, leveraging JSON for configuration, logging, inter-service communication. Troubleshoot low-level failures using log analysis, iRODS rules, and network packet inspection, contributing to infrastructure stabili

Full Stack Developer at Orilla Technologies

July 1, 2024 - October 1, 2024

Spearheaded the installation and maintenance of smart devices using SSH, ensuring seamless integration of PyTorch, CUDA, DeepStream, and TensorRT for AI-driven functionalities. Developed and deployed a Telegram Bot for managing AI-based human detection systems, incorporating AWS for enhanced reliability in detection processes. Engineered advanced scheduling features for detection systems, optimizing user experience through customization and real-time interaction. Collaborated with security firms to facilitate the deployment and training of AI-enabled devices, enhancing the safety and security of users.

Software Developer at OK Retail Group

July 1, 2022 - December 1, 2022

Developed a digital receipt management system integrated with accounting systems, reducing paper usage and supporting green initiatives. Automated receipt delivery and implemented a credit-based loyalty system, boosting customer retention and aligning with environmental goals. Designed a loyalty program within the digital receipt platform, enhancing customer engagement and promoting sustainable practices. Led the development of a delivery web app with real-time order tracking and AWS hosting, creating a new revenue stream and supporting franchise expansion.

Web Developer at NN Bus Service

January 1, 2022 - June 1, 2022

Led the development of 'smart-pages' for real estate, integrating live renders and dynamic content, which boosted user engagement and conversion rates. Implemented real-time property customization, enabling buyers to personalize and view finishes directly from the web interface, enhancing user experience. Maintained a digital receipt web app, seamlessly integrated into the e-commerce system, supporting sustainability goals and enhancing the company’s tech-forward image. These innovations accelerated sales cycles and reinforced the company’s brand presence in the competitive real estate market.

Software Developer at Silverstone Solutions

July 1, 2022 - December 1, 2022

Developed and maintained user interfaces on the CMS, utilizing Python to enhance the functionality and user interaction. Engineered a GeoLocation API that generated heatmaps for global ad campaign performance, enabling targeted marketing efforts. Integrated the Maps API with the Python-based CMS, successfully extracting and visualizing user coordinates to drive data-driven decision-making. Overcame technical challenges related to data extraction and visualization, delivering a robust solution that improved marketing accuracy.

Fullstack Engineer at Intellinexus

April 1, 2026 - Present

Engineering AI product features end-to-end across FastAPI/Python services and React front-ends for enterprise clients across financial services, retail and logistics. Delivering ML-driven workflows on Microsoft Azure with Snowflake as the analytical backbone, from data modelling through to production deployment. Designing PostgreSQL schemas and REST APIs for high-volume operational data and downstream BI. Collaborating with data and platform teams to ship production AI features behind clean, user-facing UX.

Founding Engineer & Director at Retail Solutions ZA

January 1, 2025 - Present

Co-founded a retail-tech company building a multi-tenant operations platform for South African grocery and franchise stores; own architecture, delivery, deployment and customer support. Designed and built a FastAPI + PostgreSQL + React/Vite monorepo that runs four production apps: InvoiceFlow, MerchCommand, ShelfSense, and SupervisorHub. Implemented strict multi-tenancy (store_id isolation across every model and query), JWT/role-based authentication, audit logging and an in-app activity log.

Backend Systems Engineer at Tsolo Storage Systems

October 1, 2024 - April 30, 2026

Architected and maintained petabyte-scale data ingestion infrastructure for the MeerKAT Radio Telescope, ensuring high-throughput, fault-tolerant transfers across federated systems in South Africa's scientific ecosystem. Designed and deployed internal APIs using FastAPI to automate data flows from source to storage, enabling real-time monitoring and operational scalability. Integrated and managed distributed storage backends using iRODS, Rucio, and Ceph-backed S3, supporting mission-critical datasets for astronomical research. Wrote and maintained robust backend Python services and shell scripts performing scheduled ingest, replication, verification, and error handling.

Full-Stack Developer at Orilla

July 1, 2024 - October 31, 2024

Software Developer at Silverstone Solutions

January 1, 2021 - December 31, 2022

Developed and maintained UI for a CMS, engineered a GeoLocation API that generated heatmaps for global ad campaign performance, and integrated Maps API with the Python-based CMS to visualize user coordinates for data-driven decision making.