IoT Engineering
Connected products from silicon to cloud — device, connectivity, platform and analytics engineered as one system.
- IEC 62443-4-2
- ETSI EN 303 645
- CE / UKCA
- ISO 9001:2015
End-to-end IoT engineering for industrial and commercial products: device hardware and firmware, connectivity design, device management at fleet scale, and the cloud platform that turns telemetry into decisions. One accountable team from sensor to dashboard, with security engineered in from the silicon up.
What this service covers
Connected device engineering
Sensor selection, low-power hardware design, and firmware for constrained devices — battery budgets measured in years, not marketing claims. Secure boot, encrypted storage and hardware root of trust where the threat model requires it.
Connectivity & protocol design
The right transport for the deployment, chosen on physics and economics: BLE, LoRaWAN, NB-IoT/LTE-M, Wi-Fi, wired industrial buses. Gateway design for brownfield sites where the equipment predates the internet.
Device management & OTA
Fleet provisioning, certificate lifecycle, remote diagnostics and staged over-the-air updates with rollback — the operational machinery that separates a connected product from a support liability.
IoT cloud platform & analytics
Ingestion, digital-twin state, alerting and analytics on AWS or Azure IoT stacks — built for the data volumes a real fleet produces, with dashboards for operations teams and APIs for your product.
Industrial IoT & retrofit
Condition monitoring and asset tracking retrofitted onto existing industrial equipment — energy metering, vibration, temperature — bridging legacy PLCs and serial protocols into modern platforms without disturbing the control layer.
From pilot to fleet
The numbering below maps to actual engagement stages — each stage has an entry criterion, a deliverable and a decision point.
- Stage 01
Feasibility & architecture
Use-case economics, connectivity trade study, power budget and security context — an architecture you can cost before committing to tooling and certification spend.
- Stage 02
Prototype & field trial
Working hardware and a thin platform slice deployed with real users on real assets. Field data — connectivity dropouts, battery drain, enclosure failures — feeds the production design.
- Stage 03
Productisation
Design for manufacture, regulatory certification (CE/UKCA, radio type approval), device management at scale, and platform hardening for production data volumes.
- Stage 04
Fleet operations
Staged rollout, OTA cadence, monitoring and a defined vulnerability-response process — either handed to your team or run as sustained engineering by Crest.
What you walk away with
- A certified, manufacturable connected device with a costed bill of materials
- A device-management capability: provisioning, OTA updates, certificate lifecycle
- A telemetry platform with dashboards and APIs your product roadmap builds on
- Fleet unit economics you can defend in front of a CFO
Discuss a iot engineering engagement
Tell us where you are — a tender requirement, a gap assessment finding, a product that needs building — and we'll respond with a concrete view on scope, approach and effort.