App Development
Native and cross-platform mobile apps that are fast, polished and built to scale with your business.
// Software · ICT · Cybersecurity
We engineer high-tech software & secure business systems.
Grünex builds modern apps, websites, ICT infrastructure and end-to-end digital solutions — backed by penetration testing, managed cybersecurity and ISO 27001 certification. Engineered in South Africa for clients anywhere.
0% custom-built
0/7 secure systems
0° solutions
What we do
End-to-end engineering, under one roof.
From the first line of code to a hardened production system, Grunex delivers the full stack of modern technology services.
Websites & Web Apps
High-performance websites, portals and SaaS platforms with modern design and clean engineering.
ICT Systems
Networks, cloud infrastructure and IT systems designed, deployed and managed for reliability.
Cybersecurity & ISO 27001
Penetration testing, managed security and ISO 27001 certification support. See all →
AI & Automation
Intelligent tools, integrations and workflow automation that remove busywork and unlock data.
Business Solutions
End-to-end digital transformation — strategy, build and support tailored to how you operate.
Cybersecurity & Compliance
Defend, monitor and get ISO 27001 certified.
Grünex secures your business end-to-end — a managed Security Operations capability that protects, monitors, detects, responds and recovers, built on internationally recognised frameworks and delivered by a certified team.
Penetration Testing
Ethical, real-world attack simulations on your apps, networks and infrastructure — vulnerabilities found, prioritised and closed before attackers exploit them.
Managed Cybersecurity (SOC)
Fully managed, around-the-clock Security Operations: continuous monitoring, threat detection & hunting, and rapid incident response — your dedicated SOC-as-a-service.
ISO 27001 Training
Practical, accredited ISO/IEC 27001 ISMS training and security-awareness programmes that turn your team into your strongest line of defence.
GAP Assessments
A clear-eyed audit of your posture against ISO/IEC 27001 Annex A — we map exactly where you are and what's needed to close every gap.
ISO 27001 Certification Support
Hands-on guidance through the full journey — ISMS design, policies, controls and audit readiness — until your organisation is certified.
Hardening & Incident Response
System hardening, firewall management and structured incident response (ISO/IEC 27035, NIST SP 800-61) to contain, recover from and learn from threats.
Prevent
Detect
Respond
Recover
Comply
Improve
Managed Security Operations — SOC-as-a-Service
We operate as an extension of your IT team — continuously protecting, monitoring, detecting, responding to and recovering from cyber threats across your network, endpoints, cloud and users.
- 24/7 security monitoring & SIEM event correlation
- Threat detection & hunting — MITRE ATT&CK mapped
- Firewall, network & perimeter security management
- Vulnerability management + penetration testing
- Incident response — ISO/IEC 27035 & NIST SP 800-61
- Endpoint & email security — anti-phishing, EDR, anti-BEC
- Backup & disaster recovery — 3-2-1-1-0, immutable copies
- Security governance, advisory, metrics & reporting
Aligned to
ISO/IEC 27001
27002
27035
NIST CSF
NIST SP 800-61
CIS Controls v8
OWASP
ITIL
Delivered by a certified security team — CISM · ISO/IEC 27001 Lead Auditor · PECB Lead Cloud Security Manager · Fortinet NSE · MSc Cyber Security & Digital Forensics.
Need to get certified, monitored or stress-tested?
Full cybersecurity services →
Talk to our security team →
How we deliver
Solutions built around your business, not the other way around.
We start with your goals, map the technology to fit, and engineer systems that are secure by design and ready for growth.
- Discovery & technical strategy
- Secure, scalable architecture
- Modern UI/UX and clean code
- Cloud deployment & ongoing support
Our products
We build & run our own software — like CompanyAdmin & Koranta.
Grünex doesn't only build for clients. We launch and operate our own platforms — proof of what we can ship.
CompanyAdmin — run your tendering business like a pro
The all-in-one platform for SME tendering companies in South Africa, Botswana & the SADC region. Never miss a deadline, price imports correctly, and bill like a professional.
- Tender deadlines, site visits & bid-validity reminders
- Quotes, pro-forma & tax invoices, credit/delivery notes — with QR sharing
- Import & local pricing calculator (FOB, freight, customs, VAT → landed cost)
- AI tender letters, licence-renewal alerts & live financials
Secure online payment via Paystack · card, bank, USSD & more.
Koranta — Botswana's online Advertiser
A modern online classifieds and advertising platform for Botswana — the digital alternative to the weekly print Advertiser. Cheaper, faster, always-on.
- Post an ad in 2 minutes — no sign-up needed
- Reaches buyers across Botswana, 24/7
- Featured & Urgent promotions, paid securely
- Direct WhatsApp & call leads — no commission on sales
Our process
A clear path from idea to launch.
01
Discover
We learn your goals, users and constraints to define the right solution.
02
Design
Architecture, UX and security planned before a single line ships.
03
Build
Agile engineering with clean code, reviews and continuous delivery.
04
Secure & Support
Hardening, monitoring and ongoing support keep you running.
Why Grunex
Engineering partners you can build a business on.
We combine modern technology with disciplined delivery and a security-first mindset — so what we build lasts.
Security-firstEvery system hardened by design.
Modern stackLatest, proven technologies.
End-to-endStrategy, build and support.
Local & agileSouth African team, global standards.
Let's build
Have a project in mind? Let's make it real.
Tell us about your idea and we'll get back to you with the next steps.
- 📍 330 Surrey Avenue, Ferndale, Randburg, Gauteng 2194, South Africa
- ✉ grunex2025@outlook.com
- ◆ Grünex (Pty) Ltd · Reg 2025/552829/07