echoloc
Get started
echoloc/ Companies/ DOOR

DOOR Tech Stack

Building intelligence platform combining hardware, software, and access control

IT Services and IT Consulting St Louis, Missouri 201–500 employees Founded 2014 Public Company
door.com LinkedIn

DOOR (formerly Latch) operates a building intelligence system spanning iOS/Android apps, embedded hardware (Bluetooth Low Energy, watchOS), and backend services on AWS. The tech stack reveals a mobile-first, device-centric architecture: native Swift and Kotlin codebases, gRPC and Protocol Buffers for service communication, Kafka for event streaming, and PostgreSQL + MongoDB for persistence. Current hiring is heavily skewed toward finance and senior roles, with active projects addressing billing automation and collections operations—a signal that revenue operations and cash-flow management are scaling pain points.

Tech Stack 35 technologies

Core StackSwift SwiftUI Kotlin Jetpack Compose Java gRPC Kafka PostgreSQL MongoDB Redis AWS Terraform OpenTelemetry AWS Lambda AWS RDS CloudFront Lockbox iOS async/await Bluetooth Low Energy watchOS Android RxJava Spring Boot AWS SQS AWS SNS OpenAPI Protocol Buffers IAM AWS KMS+5 more

What DOOR Is Building

◆Challenges

  • Reducing overhead
  • Billing discrepancies
  • Billing issues
  • Reducing delinquency
  • Scaling collections operations
  • Improving collections visibility
  • Renewal process delays
  • Protecting asset value
  • Run more efficiently
  • Grow revenue

▲Active Projects

  • Ios-based smart access platform
  • Improve accounting processes and automation
  • Process improvement and automation initiatives
  • Device installation wizard
  • Access management flows
  • Support monthly close processes

Hiring Activity

Accelerating10 roles · 9 in 30d

Department

Finance
5
Engineering
3
Ops
1
Sales
1

Seniority

Senior
5
Junior
2
Director
1
Manager
1
Mid
1
Company intelligence

Find more companies like DOOR by tech stack, pain points and active projects

Get started free

About DOOR

DOOR provides building intelligence to residential and purpose-built community operators. The platform integrates smart access hardware, mobile applications for residents and staff, and cloud-hosted operational software. The system manages access control, device provisioning, and building automation across multi-unit portfolios. Founded in 2014 and headquartered in St. Louis, DOOR serves property owners, operators, and residents seeking to reduce operational overhead and improve living experiences. Current hiring spans the United States, Uruguay, and Peru.

HeadquartersSt Louis, Missouri
Company Size201–500 employees
Founded2014
Hiring MarketsUnited States, Uruguay, Peru

Frequently Asked Questions

What is DOOR's tech stack?

DOOR uses native mobile (Swift/SwiftUI on iOS, Kotlin/Jetpack Compose on Android), Bluetooth Low Energy for device communication, and a backend built on Spring Boot, gRPC, Kafka, PostgreSQL, MongoDB, and AWS services including Lambda, RDS, SQS, and KMS.

What is DOOR working on?

Current projects include an iOS-based smart access platform, device installation workflows, access management flows, and process automation focused on accounting, billing, and collections operations—reflecting priorities around reducing overhead and improving revenue operations.

How this profile is built

DOOR's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.