Ndohnwi
Declan

Problem

A scaling web application was hosted on a single server with no redundancy, automated backups, or cost controls; one hardware failure away from complete outage.

Solution

Designed a multi-AZ AWS architecture using EC2 Auto Scaling Groups, Application Load Balancer, RDS Multi-AZ, S3 for static assets, and CloudFront for global edge delivery. IaC via Terraform for repeatable deployments.

Outcome

99.95% uptime achieved. Infrastructure costs reduced 35% vs. legacy approach. Recovery time objective reduced from hours to under 5 minutes.

Problem

An SME operating in financial services had no documented security posture, undefined incident response procedures, and uncontrolled user access privileges across critical systems.

Solution

Conducted a full security audit aligned to NIST CSF and CIS Controls. Implemented IAM role restructuring, MFA enforcement, network segmentation, and a documented incident response playbook.

Outcome

Critical attack surface reduced by 60%. Organization passed subsequent compliance review. Zero security incidents in the 12 months following implementation.

Problem

A service business was spending 20+ hours weekly on manual report generation, client communication drafts, and data entry across disconnected SaaS tools.

Solution

Built an n8n-based automation layer integrating LLM APIs for content generation, webhook triggers for real-time data sync, and a custom Python middleware for business logic processing.

Outcome

Manual workload reduced by 18 hours per week. Turnaround on client deliverables cut from 48 hours to under 2 hours. System runs unattended with zero manual intervention.

Problem

A 50-seat call centre was running on aging PSTN hardware with high per-minute costs, no call recording, and no centralized management of routing or extensions.

Solution

Deployed Asterisk-based PBX with SIP trunking for international DIDs, configured IVR flows, call queues, and agent reporting. Implemented fail-over routing with QoS policies on network layer.

Outcome

Telephony costs reduced by 55%. Call recording and compliance logging enabled. System handles peak loads of 120 concurrent calls without degradation.

Problem

A commercial property needed centralized control over HVAC, lighting, access control, and CCTV, all running on separate, incompatible systems with no unified management interface.

Solution

Designed a Home Assistant-based integration layer connecting Z-Wave, Zigbee, and IP-based devices. Built custom automation scripts for scheduled and event-driven control, with a remote management dashboard.

Outcome

Operational costs reduced 28% through scheduling and energy management. All building systems visible and controllable from a single pane. Remote incident response time cut from 2 hours to under 10 minutes.

Problem

A logistics company was managing operations across spreadsheets and WhatsApp threads: no audit trail, no reporting, and no integration between billing, dispatch, and client management.

Solution

Built a role-based PHP web application with MySQL, covering client management, job dispatch, invoice generation, payment tracking, and management reporting with export functionality.

Outcome

Full operational visibility achieved. Invoice processing time dropped from 45 minutes to under 3 minutes. Management reporting that previously took a week now runs in seconds.