Selected work

Production systems we have built and run.

Engineering programmes across edge, media, cloud and delivery. Our own products, Casewelt and SialFlow, have their own pages.

Case studies Engineering

Case studies

Three programmes in detail

Security · Edge

Context: A public-facing estate served through a shared ingress layer, where every application depended on the same traffic path.
Problem: Traffic policy, TLS and health checking were handled per application, so a change in one place could take neighbours down with it.
Work: Designed and built a multi-node traffic layer with WAF policy, TLS termination and automated health checks, then moved applications onto it in stages.
Technology: Nginx, HAProxy, WAF rule sets, TLS.
Scope: Architecture, implementation, migration, operation.

Media

Context: A high-traffic video service delivering both live streams and an on-demand catalogue to a general audience.
Problem: Origin load and cache behaviour were the limiting factors during peaks, and playback issues were hard to attribute to a layer.
Work: Built the HLS delivery path with edge caching and CDN integration, and set cache and segment behaviour so origin traffic stayed bounded during live events.
Technology: Nginx, HLS, CDN, edge caching.
Scope: Architecture, implementation, operation.

Cloud

Context: An on-premises estate that had to keep running while workloads moved to public cloud.
Problem: A single cutover carried too much risk, and cloud spend was not visible until after the fact.
Work: Defined the target environments in Terraform and moved workloads in phases, so each stage could be verified and reversed before the next one started.
Technology: AWS, Azure, Terraform.
Scope: Architecture, implementation, migration.

Also delivered

Automated delivery from commit to production: container builds, testing, staged deployment and rollback on GitLab and Docker.

Monitoring, maintenance, patching and incident response across multi-site infrastructure, with documented runbooks and on-call cover.

API backend, administration tools and a hardened cloud deployment behind a CDN, where the missing piece was software rather than operations.

Next step

Send the stack, the problem and the constraint that shapes it.