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Dirk Coetsee

@dirkcoetsee

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Senior backend engineer at Codeo, building production Python and AWS systems, including LLM agents with guardrails.

South Africa

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What I'm looking for

I'm seeking a fully remote role from Ballito, South Africa.

At Codeo, I maintain and extend SPAR systems across TypeScript and C# codebases, delivering bug fixes, features and production support. At Trackbox, I architected and developed a cloud-first platform for safety and security products, with AWS Lambda and Fargate services and a Vue and TypeScript frontend.

At Emerge Mobile and iKhokha, I replaced ikhokha.com with a Django application, writing about 80% of its server-side code, and built the merchant reporting and settlement console. Through National Prepaid, I built a Python token-vending workflow and delivered production LLM tools with guardrails and staff review.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Codeo

Aug 2023 - Present (3 years 3 months)

Maintain and extend SPAR systems across TypeScript and C# codebases, delivering bug fixes, new features, and production support. Helped develop a targeted-marketing solution through to beta.

TypeScript C#Production Support Bug fixing Feature Development

Current

Lead Software Engineer and Architect

Current

Trackbox

Oct 2022 - Present (4 years 1 month)

Architect and principal developer replacing a legacy PHP application with a distributed, cloud-first platform. Built stateless services on AWS Lambda and Fargate with a Vue and TypeScript frontend.

AWS Lambda Fargate Vue.Js TypeScript EventBridge Azure Service Bus Firebase JWT Redis CI CD CloudFormation Blue Green Deployment

Contractor and Consultant

National Prepaid

Jan 2020 - Dec 2025 (5 years 11 months)

Built a cloud-to-local token-vending workflow and a production LLM phone agent. Automated monthly client-report emails, saving weeks of administrative work each month.

Python AWS Azure Serverless LLM Email Processing Automation

Consultant

IQ Business

Oct 2022 - Jul 2023 (9 months)

Served as software lead on an internal accounting project, principally developing the React and TypeScript frontend. Helped the team recover time to meet its deadline.

React TypeScript Frontend Development Leadership

Senior Developer and Software Manager

Emerge Mobile and iKhokha

Apr 2014 - Mar 2018 (3 years 11 months)

First software-specific hire responsible for software delivery, deployments, AWS DevOps, and server security. Replaced ikhokha.com with a Django application and built merchant reporting and settlement console.

Django Python AWS S3 Nginx Gunicorn PCI DSS Code Review Mentorship

.NET Technical Lead

SA Home Loans

Jan 2014 - Apr 2014 (3 months)

Developed C# REST services on Microsoft SQL Server through Dapper behind an AngularJS frontend. Combined hands-on work with code and design review, mentoring, and domain-driven design.

C#.NET SQL Server Dapper AngularJS REST Domain Driven Design Mentorship

Biometrics R&D Specialist

Net1

Apr 2012 - Dec 2013 (1 year 8 months)

Designed a C++ fingerprint-matching filter and co-developed its clustered implementation, averaging approximately 50 times the speed of the previous approach. Worked with multithreading, non-blocking I/O, and Linux.

C++Fingerprint Matching Multithreading Non Blocking I O Linux

Lecturer

University of KwaZulu-Natal

Jan 2008 - Mar 2012 (4 years 2 months)

Taught advanced engineering computing and electronic design, developed courses, and supervised design students. Built a C# and SQL timetabling tool with clash checking and Excel reports.

Teaching Course Development C#SQL Timetabling