Engineers, based in Sierra Leone
RIAH SL Limited works on networks, Linux servers, software testing and deployment, RapidPro SMS, Monime payments and DHIS2.
How we work
We design for limited bandwidth and unreliable power, and we hand over systems your own team can run after we leave.
Network and application consultancy
Architecture reviews, application testing and production deployments.
Messaging and payment integration
Automated SMS through RapidPro, connected to mobile money through Monime.
Networks and servers
Networks with backup links, and hardened Linux servers that stay up.
Public health informatics
DHIS2 set up for each programme, and the data-collection tablets that feed it.
How a project runs
- 01
Audit
We map what you run today and find where it fails.
- 02
Design
Network, servers, integrations and security, planned before anything is bought.
- 03
Test
Code review, load and acceptance testing in your real conditions.
- 04
Deploy
A staged go-live, hardened servers and handover documents.
- 05
Support
Monitoring, licence renewals and someone to call when it breaks.
Who we work for
Most of our clients work with unreliable power and patchy connections, so that is what we design for.
Health programmes
Field data that reaches DHIS2 on time, and SMS alerts that reach health workers.
- DHIS2
- RapidPro SMS
- Tablet management
Banks & fintech
Mobile money that settles, receipts by SMS, and networks locked down.
- Monime
- Firewalls
- Code review
Ministries & agencies
Networks audited and secured, and servers that keep public services online.
- Network audits
- Firewalls
- Linux servers
Hotels & venues
Wi-Fi across the whole property, TV in every room, and internet that fails over.
- Campus Wi-Fi
- Waka TV
- Starlink + fibre
From the cable to the code
We handle the network, the servers, the integrations and the licences ourselves, so you have one team to call when something stops working.
Internet and networks that stay up
Network consultancy & infrastructure
Audits, topology design, multi-WAN with Starlink and fibre, Ubiquiti campus Wi-Fi and firewall security.
Bulk SMS joined to mobile money
RapidPro SMS & Monime payments
Automated SMS workflows in RapidPro, joined to Monime for mobile money collection, disbursement and receipts.
Software checked before it goes live
Application review, testing & deployment
Code and security review, automated and acceptance testing, and production deployment you can repeat.
Servers and databases you can rely on
Linux & open-source cloud systems
Hardened Ubuntu and Debian servers, PostgreSQL with PostGIS, and Cacti monitoring of the whole estate.
Health data systems that report on time
DHIS2 & health technology
DHIS2 metadata and tracker design, analytics dashboards, and the tablets and middleware that feed them.
Software and licences, supplied and installed
Enterprise software licensing
We supply, install and renew Zoho products, next-generation firewall licences and Waka TV.
Tell us what needs fixing.
A few lines is enough. We reply with questions or a proposed scope.