Maintenance and sustaining engineering

Launch is the beginning, not the end. After a connected device ships, firmware needs updates, components go obsolete, security requirements tighten and new markets open. Haltian’s maintenance and sustaining engineering keeps your product reliable, secure and sellable for as long as it is on the market. There is no end gate. 

40+

Countries with customers

200+

Products taken to market

25+

Years of device experience

Haltian engineer doing sustaining engineering and maintenance work on a circuit board under a microscope
Product development phases: Idea, Technical concept, Productization, Maintenance & Support. Current phase: Maintenance & Support.

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Sustaining engineering

Field issues reproduced, root-caused and fixed at the source, plus stability improvements.


When you need it:
Field issues or a defect backlog.

Release & update management

Firmware and configuration updates, including over-the-air (OTA), with version control, release notes and rollback.

When you need it:
Field issues or a defect backlog.

Monitoring and incident handling

Device behavior monitored, incidents triaged and hotfixes applied. 


When you need it:
A fleet in the field that has to stay up. 

Security and compliance

Vulnerabilities patched, security mechanisms maintained and compliance kept current, including the Cyber Resilience Act.

When you need it:
A new vulnerability or a changed requirement. 

Lifecycle and component management 

Obsolescence managed before it becomes an emergency, and component changes re-qualified.  

When you need it:
An end-of-life notice from a supplier. 

Type approval management  


Approvals maintained and extended into new markets. 


When you need it:
A new market or a changed regulation. 

Documentation and technical support 

Documentation kept current, and support for your team and field teams. 

When you need it:
Your team needs answers from the engineers. 

Next-version development 


The next product version, or applications around a device already in the field. 


When you need it:
Field data points to a better product.

Why choose Haltian for maintenance

The team that built it
keeps it

When we designed your product, the engineers who built it are the ones who maintain it, so no design history is lost.

Updateability designed in


In the products we design, signed updates and rollback protection are part of the architecture, not added later.

Type approvals as a repeatable service

We manage approvals for your target markets and work with an established test partner network.

Predictable cost


The service is priced as an agreed scope, so maintenance costs are predictable rather than open-ended.

Talk to our specialists

Jari Arvola, Custom Solutions Specialist at Haltian

Jari Arvola

jari.arvola@haltian.com

Jarno Leskelä, Custom Solutions Specialist at Haltian

Jarno Leskelä

jarno.leskela@haltian.com

Frequently asked questions

Sustaining engineering is the engineering work that keeps a product reliable, secure and sellable after launch: fixing field issues, managing component changes, updating firmware and maintaining type approvals. At Haltian, when we designed your product, the engineers who built it are the ones who maintain it, so no design history is lost. You can take the full lifecycle package or only the modules you need, from security and Cyber Resilience Act compliance to next-version development.

If you sell a connected product in the EU, the Cyber Resilience Act requires you to handle vulnerabilities, report actively exploited ones and provide security updates for a defined support period. Reporting obligations have applied since 11 September 2026 and the rest of the regulation applies from 11 December 2027. We handle the engineering side: vulnerability management, security patching, and update delivery.

Yes. Sustaining engineering shows what the next generation should do better. Field data, defect trends and component changes feed straight into its concept study. 

The scope is agreed with you, so pricing is predictable rather than open-ended. 

You do. All intellectual property created in the work belongs to you.

Productization ends with the product in mass production and a handover package. From there, maintenance and support begin.