Case studies

Systems delivered into real-world operations.

These three are our flagship deliveries, one each in elderly care, aviation and enterprise services. What they share is that all of them have been running in real conditions for years: an alert a community worker receives in the middle of the night, an app an inspector uses on an airport apron with no signal. Here you will find the context, the key points of each solution and where each one now stands; full case material is available on request under NDA.

Elderly Care Platform Airport Asset Inspection System Enterprise E-signature System

Elderly care system interface illustration

Elderly care Dedicated team

Elderly Care Platform

Wearables, in-home sensors, emergency call buttons, community workers and family members closed into one loop: when something is wrong at home, someone picks it up, someone visits, and the whole case can be traced afterwards.

A home-care platform built for the district civil affairs authority of a city in East China and its subdistricts. Community workers previously covered elderly residents living alone through phone calls and home visits; a fall or a long spell of inactivity came to light only when a neighbour or a relative happened to look in. The hard part was never the hardware but who answers the alert: mixed device brands, false alarms that erode trust, missed alarms that become liabilities, and families who want visibility without open access to health data.

District-wide pilot

Deployed across subdistricts by one district civil affairs authority

One file each

Every resident living alone or of advanced age

No alert waits

A first-response SLA for every alert; overdue alerts go to the duty officer

Highlights

A unified device layer abstracts wristbands, fall detection, door sensors, utility-usage sensors and call buttons; a new brand needs only one adapter.
A rules engine with behavioural baselines judges on multiple signals, so no single signal raises an alert on its own; what reaches a community worker is usually a visit worth making, not a twitchy sensor.
A mobile app for community workers queues alerts by priority with one-tap calling, visit check-in, photos and case notes, all logged.
A WeChat mini-program shows families a masked health summary and care records with urgent alerts pushed in real time; service records moved online and export monthly for subsidy accounting and performance review.

Tech stack

GoMQTT / IoTKafkaTimescaleDBReactFlutterWeChat Mini Program

Ask about this case See dedicated teams

Aviation Dedicated team Modernisation · in progress

Airport Asset Inspection System

A long-running airport facilities and asset maintenance system made faster and easier to use, without losing a single day of inspections and repairs. The mobile app has been rebuilt in Flutter and is live; the web application is being migrated module by module.

The client is the facilities maintenance department of an international airport group. Its existing system covers equipment and location master data, inspection checklists, preventive and corrective maintenance, toolbox-meeting job assignment, ad-hoc inspections, operations reporting and incident reporting, used daily by airport staff, contractors and field technicians. Years of change had left it slow and dated, with technicians tapping through too many steps to finish one checklist on a phone. The constraints: no downtime, no business rule lost, and a markedly better experience on weak connections in the field.

Business modules mapped before any code changed

Location levels, coding rules preserved as-is

Phases: mobile delivered, web in progress

Highlights

Map first, then build: a full code and business analysis produced 10 domains, more than 30 business rules and every key workflow as an agreed rebuild baseline.
The mobile app was rewritten in Flutter and is live: job assignment, work-order execution, checklist capture with threshold validation, ad-hoc inspection evidence, QR lookup and push notifications, tuned for weak connections.
Performance work on high-traffic endpoints, asynchronous reports and bulk imports, and caching of the location tree and equipment catalogue made opening a list or a report at peak time noticeably faster.
The web application is being replaced module by module, with old and new running side by side on the same data and permissions; the data model, approval chains, verification sign-off and audit trail are all preserved while screens are redesigned around technicians and managers.

Tech stack

.NETFlutterKafkaAzureFirebaseSentry

Ask about this case See dedicated teams

Enterprise Project delivery

Enterprise E-signature System

A compliant e-seal and approval-workflow engine integrated with OA, HR and contract systems, turning internal sealing from a walk between floors into a few taps on a phone.

An internal e-signature system for a group company in the Yangtze River Delta and its subsidiaries across several cities. Sealing used to be entirely offline: paper request forms signed level by level, stamped by administration, contracts posted to headquarters and back over a week, seal ledgers kept by hand. The system had to carry legal effect under China's Electronic Signature Law, support the group's tiered authorisation, and integrate with the existing OA, HR and contract systems.

Multi-city rollout

Head office and out-of-town subsidiaries on one sealing workflow

Fully online

Request, approval and sealing, with no paper form

In daily use

Now the main route for sealing across the group

Highlights

Digital certificates from a third-party CA combined with trusted timestamps give every document a complete evidence chain of signer identity, time and document digest, available on demand to legal and audit.
A visual workflow engine lets administrators configure approval paths and sealing rights by document type, amount band and company, with parallel, joint, added and conditional approvals, without code changes.
Single sign-on with OA, organisation sync with HR and two-way integration with the contract system: contracts start where they always did, and signed files and evidence packs are written back automatically.
Full seal lifecycle management and mobile approval: creation, authorisation, freezing and revocation are all logged, and executives approve in bulk on their phones after identity verification.

Tech stack

Java / Spring BootVue 3MySQLCA certificatesTrusted timestampsPDF sealingOA / HR integration

Ask about this case See project delivery

See something close to what you need?

Under an NDA we can walk you through any of these in full, including the architecture, the trade-offs we made along the way and the mistakes we learned from.