Proof Tech Stack

Identity verification, notarization, and fraud prevention for digital transactions

Software Development Boston, MA 201–500 employees Privately Held

Proof operates a trust and verification platform across identity, notarization, and fraud prevention, serving over 7,000 businesses. The stack spans mobile-first (iOS, Android, Swift, Kotlin, Jetpack Compose, SwiftUI) and backend infrastructure (Rails, PostgreSQL, Redis, AWS, GCP, Azure), with emerging crypto payment work visible in active projects—suggesting a push into blockchain-based settlement rails. Minimal recent hiring (5 roles, none posted in 30 days) with leadership concentrated in product and engineering indicates focus on deepening existing capabilities rather than scaling.

Tech Stack 24 technologies

Core StackKotlin Swift GraphQL React TypeScript Jetpack Compose SwiftUI Ruby on Rails PostgreSQL Redis AWS Salesforce Slack Go Android iOS Apollo UIKit NFC Public Key Infrastructure Google Workspace GCP Azure

What Proof Is Building

◆Challenges

Integrating compliance into crypto payments
Stablecoin rails value
Travel rule compliance
Reducing churn
Streamlining workflows
Adoption gaps
Scaling platform infrastructure
Performance bottlenecks

▲Active Projects

Build 0 to 1 crypto payment products
Technical integrations for crypto payments
Proof mobile applications
Proof sdks for android and ios
Mobile experiences
Restful api development
Backend services

Hiring Activity

Minimal5 roles · 0 in 30d

Department

Engineering

Sales

Product

Seniority

Senior

Director

Mid

Notable leadership hires: Product Director

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About Proof

Proof builds a platform for verifying identities, executing notarized agreements, and preventing fraud in high-stakes transactions. The company serves real estate, automotive, finance, and HR sectors—industries where transaction friction and compliance risk are material costs. Product surfaces include mobile applications and SDKs for Android and iOS, a REST API layer, and backend services running on PostgreSQL and Redis. The company operates from Boston with 201–500 employees and is privately held. Current engineering effort includes building crypto payment products and integrating compliance controls into those rails, reflecting expansion into blockchain-based settlement.

HeadquartersBoston, MA

Company Size201–500 employees

Hiring MarketsUnited States

Frequently Asked Questions

What platforms does Proof support?

Proof offers iOS and Android mobile applications, REST APIs, and SDKs for both platforms. Mobile UI is built with SwiftUI, UIKit (iOS) and Jetpack Compose, Kotlin (Android).

What is Proof's tech stack?

Backend: Ruby on Rails, PostgreSQL, Redis, AWS, GCP, Azure. Mobile: Swift, Kotlin, SwiftUI, Jetpack Compose. Integration: GraphQL, React, TypeScript. Enterprise tools: Salesforce, Slack, Google Workspace.