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EV Charging/Field Operations Tools
S3 Sustain · Field Operations

Field Operations Tools

We build the software that keeps your chargers running in the field. Remote diagnostics, mobile technician apps, predictive maintenance, spare parts tracking, and commissioning tools designed for operations teams who manage real charging networks.

What We Deliver Icon

What We Deliver

Core capabilities

Remote Diagnostics

Real-time error code analysis pulled from OCPP StatusNotification and DiagnosticsStatusNotification messages. Component health monitoring, firmware log retrieval, and remote reboot capabilities that resolve issues before dispatching a technician.

Error CodesHealth MonitoringFirmware LogsRemote Reboot

Field Technician App

Mobile-first diagnostic tools built for technicians on site. Guided troubleshooting workflows, repair checklists, photo documentation, and direct access to charger diagnostics over local Bluetooth or the CSMS backend.

Mobile AppTroubleshootingChecklistsBluetooth

Predictive Maintenance

Failure pattern recognition using historical error data, component lifecycle tracking based on usage cycles, and proactive alerts that flag chargers likely to fail before they go offline.

Pattern RecognitionLifecycleProactive AlertsAnalytics

Inventory and Spare Parts

Parts tracking tied to charger models and serial numbers, warranty management with expiration alerts, complete service history per charger, and reorder automation for frequently consumed components.

Parts TrackingWarrantyService HistoryReorder

SLA and Ticket Management

Automated ticket creation from charger faults, escalation workflows based on severity and downtime duration, response time tracking against SLA targets, and reporting dashboards for operations managers.

TicketsEscalationSLA TrackingReporting

Commissioning Tools

Charger onboarding workflows that walk technicians through network configuration, OCPP endpoint setup, functional testing, and site validation. Configuration templates that standardize deployment across all sites.

OnboardingConfig TemplatesValidationSite Setup
Engineering Flow Icon

Engineering Flow

How we execute

01Requirements > Operations Team InterviewsPlan
02Mobile App Architecture > UX DesignDesign
03Backend Integration > OCPP DiagnosticsBuild
04Diagnostic Engine > Fault ClassificationBuild
05Alert System > Escalation WorkflowsBuild
06Testing > Field Technician ValidationTest
07Rollout > Team TrainingValidate
08Iteration > Feedback-Driven ImprovementsOperate
Tech Stack Icon

Tech Stack

Tools & technologies

React Native

Cross-platform mobile app for field technicians on iOS and Android.

iOSAndroidExpo

Node.js

Backend services for ticket management, diagnostics, and integrations.

ExpressREST APIWebSocket

PostgreSQL

Service history, inventory, and ticket data with full audit trails.

Audit LogsRelationsSearch

OCPP Diagnostics

Leveraging OCPP diagnostic messages for remote charger health checks.

GetDiagnosticsStatusNotificationTriggers

Push Notifications

Real-time alerts to technicians and operations managers on fault events.

FCMAPNsPriority

Grafana

Operations dashboards for fleet health, SLA compliance, and uptime.

DashboardsAlertsReports

PagerDuty Integration

Escalation management for critical charger failures and SLA breaches.

EscalationOn-CallIncidents

Barcode / QR Scanning

Quick charger and part identification in the field via camera scanning.

QR CodeBarcodeAsset ID

Offline Support

Local data caching for technicians working in areas with limited connectivity.

SQLiteSyncQueue

Ready to improve your field operations?

We build tools that reduce truck rolls and keep your chargers online. Let us walk you through what we have shipped.