01Software & Solution Architecture
Application, platform, API, messaging, deployment, and data architecture grounded in actual operational constraints.
- Architecture direction
- Design reviews
- Technology evaluation
Software Architecture • Technical Leadership • Production Engineering
Complex systems.
Clear direction.
CodeSlingers helps organizations design, modernize, integrate, and stabilize software platforms that must perform in the real world.
Senior architectural judgement backed by hands-on engineering across distributed systems, industrial and mining environments, data platforms, on-premise infrastructure, and production operations.
- 18+ yearsFounder experience
- Architecture → OperationsFull production lifecycle
- Industrial / MiningReal operating constraints
01 / What we do
Senior technical capability where the stakes and constraints are real.
Focused consulting for difficult decisions, complicated integrations, established platforms, and systems that cannot be treated like greenfield demos.
01
02System Integration
Clear boundaries and dependable flows across equipment, services, APIs, message brokers, databases, and enterprise systems.
- Integration planning
- Event-driven systems
- API and messaging design
03Industrial & On-Premise Platforms
Platforms designed for mine networks, restricted infrastructure, offline operation, local deployment, and operational support.
- Industrial / OT environments
- Disconnected operation
- Containerized platforms
04Data Architecture & Analytics
Transactional and analytical data flows spanning operational stores, events, ETL, warehousing, BI, and real-time dashboards.
- High-volume event data
- Data pipelines
- Business Intelligence
05Legacy Modernization
Pragmatic evolution of established systems while preserving compatibility, operational continuity, and valuable domain knowledge.
- Modernization roadmaps
- Incremental migration
- Framework evolution
06Production Engineering
Diagnosis and remediation across application code, data stores, Linux, containers, messaging, networks, and deployment architecture.
- Complex troubleshooting
- Performance analysis
- Production readiness
07AI-Enabled Systems
Practical LLM, vector-search, and local AI integration where it improves a sound application or analytics architecture.
- Local / on-premise AI
- LLM integration
- AI-assisted BI
02 / The CodeSlingers difference
Architecture that survives contact with production.
The value is not a longer technology list. It is the ability to connect architecture decisions to the way software is built, deployed, supported, diagnosed, and evolved.
Meet the experience behind CodeSlingers →Hands-on by design
Architecture stays close to code, data, infrastructure, deployment, and production feedback.
Real-world constraints
Reliability, connectivity, existing deployments, supportability, and offline operation shape the design.
Technology with purpose
Tools are selected for the problem and operating model—not novelty or fashion.
Delivery-aware decisions
Maintainability, production readiness, team capability, and long-term ownership remain part of the architecture.
03 / Problems we navigate
The difficult work usually happens between the boxes.
Real-time industrial tracking
Personnel, beacon/tag, equipment, and operational events moving across distributed services into usable operational views.
High-volume event processing
Ingestion, transformation, storage, and query strategies for sustained volumes of operational event data.
Restricted and disconnected environments
Deployment and update strategies for bandwidth-constrained, controlled, and offline industrial infrastructure.
Cross-boundary production failures
Tracing problems across applications, data stores, messaging, containers, operating systems, and networks.
04 / How we engage
From uncertain terrain to an executable route.
Engagements are shaped around the problem: a focused review, a technical roadmap, architecture leadership, integration planning, troubleshooting, or hands-on delivery.
- 01Understand the terrain
Clarify business intent, system boundaries, operating conditions, dependencies, and failure modes.
- 02Choose the route
Define pragmatic architecture decisions, trade-offs, responsibilities, and an incremental delivery path.
- 03Build with the team
Support implementation through technical leadership, reviews, standards, mentoring, and direct engineering.
- 04Prove it in production
Validate deployment, observability, operability, performance, support readiness, and production feedback.
05 / Founder CV
Founder · Software Architect · Technical Lead
Stephan Coertzen
More than 18 years across software engineering, architecture, technical leadership, system integration, data platforms, industrial software, and production operations.
Currently Technical Lead at A&R Group Engineering, leading a development team and shaping software used in mining environments. The experience behind CodeSlingers spans architecture decisions, implementation, code review, engineering standards, deployment, and difficult production fault-finding.
- Current role
- Technical Lead, A&R Group Engineering
- Location
- Potchefstroom, South Africa
- Availability
- Appropriate remote opportunities
- Notice period
- 1 calendar month
Profile
Architecture and leadership profile
Hands-on software architect and technical leader working across distributed and event-driven systems, industrial/OT platforms, application and platform architecture, data architecture, Business Intelligence, integration, and legacy modernization.
Production experience includes Linux environments, containers, CI/CD, on-premise and offline infrastructure, observability, performance investigation, failure analysis, deployment strategy, and operational support.
Career
Professional experience
Software EngineerSenior EngineerTeam LeadArchitectureTechnical Lead
Current role · Industrial software leadership
Technical Lead
A&R Group Engineering · Potchefstroom, South Africa
Joined as IT Manager before moving into the Technical Lead role in 2023. Lead architecture and engineering across software platforms supporting mining operations.
- Lead a five-developer team through architecture decisions, implementation planning, code review, mentoring, engineering standards, and production readiness.
- Shape lamproom, proximity-awareness, personnel-tracking, and related operational software used in mining environments.
- Plan distributed and event-driven integrations across tracking equipment, mine systems, APIs, messaging, data platforms, and dashboards.
- Design data and BI capabilities for operational reporting, high-volume event data, and real-time visibility.
- Support containerized Linux and on-premise deployments, including restricted or disconnected environments and production troubleshooting.
- Guide practical local AI and AI-assisted BI integration using Ollama, LangChain, and vector databases.
Architecture & implementation: JavaScript, Node.js, Java, MySQL, MongoDB, ClickHouse, SQL Server, MQTT, Docker, Linux, Bash, data pipelines, BI, and local AI integration.
Senior engineering
Senior Software Engineer / Full Stack Developer
Master Drilling · Fochville, South Africa
- Developed a major ERP/CMS framework using Node.js, AngularJS, and MongoDB.
- Built custom Business Intelligence tools and dashboards and worked with RPA and machine-learning capabilities.
- Integrated Microsoft Dynamics AX, SharePoint, web, mobile, and data services.
Architecture & team leadership
Senior Software Engineer / Full Stack Developer
Simulated Training Solutions · Lynnwood, South Africa
- Combined software development, R&D, architecture, development-team leadership, and project responsibility.
- Designed the overall application framework and a cross-platform Web Interface Kit.
- Led development work for tablet projects and a Learning Management System, and contributed to mine training-related software initiatives.
Foundation in engineering & architecture
Senior Software Engineer / Full Stack Developer
Fourier Approach Pty Ltd · Centurion, Gauteng
- Progressed through software engineering, architecture, R&D, and team leadership within a five-person software team.
- Designed and built the Fourier Application Framework and workflow, monitoring, incident-management, and business-process solutions.
- Worked with C#, SQL Server, TIBCO Staffware, IBM Process Server, DataPower, and enterprise service bus technologies.
Toolkit
Technical capabilities
Architecture & Integration
Distributed Systems · Event-Driven Architecture · REST APIs · Messaging · MQTT · ETL · Legacy Modernization
Languages & Engineering
JavaScript · Node.js · Java · C# / .NET · Python · SQL · Bash · Web Technologies
Data Platforms
MongoDB · MySQL · SQL Server · ClickHouse · Data Modelling · Warehousing · Vector Databases
Infrastructure & Operations
Docker · Linux · CI/CD · Git · Networking · Reverse Proxies · On-Premise and Offline Deployment
AI & Analytics
Business Intelligence · Real-Time Dashboards · LLM Integration · Ollama · LangChain · Vector Search · Local AI
Technical Leadership
Architecture Decisions · Code Reviews · Engineering Standards · Mentoring · Production Readiness · Technical Roadmaps
Education
Academic foundation & training
Honours BSc. IT
Potchefstroom University
BSc. IT
Potchefstroom University
IBM Process Server Training
IBM
TIBCO Workflow Diploma
TIBCO
06 / Make contact
Bring the difficult system problem.
CodeSlingers is available for focused architecture reviews, integration and modernization planning, industrial platform consulting, production troubleshooting, and hands-on technical leadership.