On-demand & field service software

On-Demand Service Platforms for Requests, Matching & Field Verification

We design orchestration systems that connect service requests with qualified providers, approvals, and proof-of-completion — without copying food-delivery kitchen states or salon-only booking flows.

Skill MatchingTrade License Verified
Field ExecutionBefore/After Photo Log
Parts TrackingVan Inventory Sync
Sign-off EscrowDigital Acceptance OTP
FIELD SERVICE DISPATCH & WORK ORDER ENGINE
Work OrderWO-8842-HVAC
Client EntityApex Tower Real Estate (Floor 14)
Trade CategoryCommercial HVAC Systems
Contract Value$2,450.00
Assigned TechMarcus Sterling (Lead Tech)
Trade CredentialEPA Universal + Master Mechanical
Work Order Execution LifecycleLive Status: Diagnostic Checklist Complete • Replacing Valve
01.VERIFIED

Intake & Telemetry

Chiller Pressure Sensor Alarm Verified

Field AuditSigned Off
02.VERIFIED

Skill-Match Dispatch

Marcus S. Matched (4.2mi distance)

Field AuditSigned Off
03.VERIFIED

On-Site Diagnosis

Faulty Expansion Valve Isolated

Field AuditSigned Off
04.ACTIVE

Field Execution

Refrigerant Recalibration in Progress

Field AuditIn Flight
05.PENDING

Customer Sign-Off

Digital Warranty Token Handoff

Field AuditQueued
Van Telematics: R-410A Refrigerant + Actuator Kit on board
• Change Order Approval Gate Ready

Service Request Matcher

The defining challenge of On-Demand is matching the right available provider to a service request. This requires filtering by strict rules—skills, radius, and schedule—not vague AI scores.

Inbound Queue3
Selected Job Profile

Plumbing - Emergency

Zone: Zone A (North)SLA: Immediate (< 1hr)
L2 CertificationEmergency GearAvailable Now
Job Origin
Alex R.2.1mi • ★ 4.9
Eligible
Sam T.1.5mi • ★ 4.7
busy
Jordan K.8.0mi • ★ 5.0
outside window

Provider Availability Matrix

Marketplaces die without supply visibility. The system must map provider schedules, active job durations, and transit blocks to surface true availability for incoming requests. We visualize provider availability over time to support assignment matching.

Active Roster
08:00
09:00
10:00
11:00
12:00
Sarah M.P-12
L3 Plumbing4.9
busySR-882
transitTo Zone B
available
available
offline
James K.P-14
HVAC Com4.8
available
busySR-911
busySR-911
transitTo Base
available
Alex R.P-19
L2 Plumbing4.6
transitTo Zone A
available
available
busySR-102
busySR-102
Jordan T.P-22
Electrical4.9
offline
offline
available
available
available
Available
Busy (On Job)
Transit

Deterministic Assignment

Dispatch is a series of hard constraints. We do not use opaque "AI confidence scores". An assignment is generated only when all criteria—availability, capability, and location—are deterministically met.

Constraint ResolutionAssignment Evaluation
Request SR-8842
Availability
Slot Matches 14:00 Window
Service Type
L3 HVAC Certified
Service Area
Within Downtown Sector
Assigned ProviderJ-14 (Confirmed)
Context: Commercial HVACNext: Field Execution Handoff
Technician Field App & Proof of Work

Field Execution Workspace & Work Order Audit Ledger

On-demand service fails when technician work is unverified. Our field platform enforces mandatory safety lockouts, digital checklists, serial number parts logging, and digital customer acceptance before funds release.

WORK ORDER WO-8842-HVAC5 OF 6 TASKS SIGNED
Isolate 480V 3-Phase Main Breaker & Lockout-Tagout (LOTO)safety
Signed: Marcus S. (Tech-104)
Timestamp14:15:02
Capture As-Found Thermal Imaging of Chiller Expansion Valvediagnostic
Signed: Marcus S. (Tech-104)
Timestamp14:22:18
Replace Seized Actuator Assembly with OEM Danfoss Partrepair
Signed: Marcus S. (Tech-104)
Timestamp14:48:50
Evacuate Lines & Recharge 14.5 lbs R-410A Refrigerantrepair
Signed: Marcus S. (Tech-104)
Timestamp15:10:12
30-Minute Continuous Pressure & Temperature Delta Run Testdiagnostic
Signed: Marcus S. (Tech-104)
Timestamp15:45:00
!
Client Facility Manager Digital Sign-off & Warranty Activationsignoff
Signed: Awaiting Client
TimestampPending Sign-off
LOTO Safety Lockout & EPA Logs Recorded in Tamper-Proof Audit

Request Ownership Transition

Service orchestration requires strict ownership boundaries. We map who creates the intent, who holds pricing authority, who executes the physical work, and who owns the final sign-off.

Customer

Creator / Approver
Service Intent, Time Preference, Quote Approval, Final Sign-off.
Request CreationWaitCompletion Approval

Platform Engine

Orchestrator
Matching Rules, Pricing Tables, SLA Timers, Dispute Escrow.
Request MatchingSettlement Engine

Provider

Executor
Availability, Offer Acceptance, Field Evidence, Scope Changes.
Offer ReceivedAcceptanceExecution Data Submission
Field Service Topology

Distributed Field Service & Work Order Orchestration Architecture

On-demand field services require offline-first mobile synchronization, rigorous safety checks, parts tracking, and cryptographic client sign-offs.

01. INTAKE & TRIAGE

Service Request & Diagnostic Surface

Structured work order intake, photo evidence upload, and trade classification

Commercial & Consumer Job Portal

GraphQL / REST

Multi-trade job wizard with address geocoding and urgent SLA flags.

Tech Stack
Next.jsTailwindGoogle Places API

Triage & Skill Tag Classification

Rule Engine / Microservice

Evaluates trade licenses (HVAC, Electrical, Plumbing) and safety requirements.

Tech Stack
FastAPIPostgreSQLTrade Taxonomy
02. ORCHESTRATION & DISPATCH

Skill-Matching & Schedule Engine

Geo-radius provider matching, parts van inventory check, and SLA clock tracking

Geo-Radius Matching Engine

Geospatial Index / Redis

Matches certified technicians within 10-mile radius with verified toolkits.

Tech Stack
Redis H3 GeohashGo Microservice

Van Inventory & Parts Ledger

EventBridge / Webhook

Real-time sync of parts stock inside mobile technician vans.

Tech Stack
KafkaDynamoDBInventory Sync
03. FIELD AUDIT & SETTLEMENT

Technician Mobile App & Escrow

LOTO safety checklist, before/after photo evidence, OTP signoff, and payout

Field Technician PWA / Mobile

Offline-First SQLite / TLS

Digital safety checklists, thermal photo capture, and customer signature canvas.

Tech Stack
React NativeWatermelonDBCamera SDK

Escrow & Warranty Ledger

ACID Ledger / Stripe Connect

Automated funds release upon client OTP sign-off with warranty bond holds.

Tech Stack
PostgreSQL ACIDStripe ConnectAudit Trail

On-Demand systems are won at the point where requests and availability meet.

We do not build generic directories. We engineer orchestration engines bound by strict spatial constraints, active schedule indexing, and service execution visibility.