SignBulb: The Enterprise eSignature Platform Built for Compliance and Scale

Perigeon partnered with Valcare to build SignBulb, a secure and scalable eSignature SaaS powered by .NET, Flutter, and Azure, ensuring HIPAA, SOC2, and ISO 27001 compliance from architecture to production.

SignBulb From Valcare’s Vision→to Perigeon’s Engineering

A cloud-native, containerized, mobile-first eSignature SaaS product engineered entirely by Perigeon for Valcare Systems

Project Objectives

Deliver intuitive, mobile-friendly UX with Figma-to-HTML implementation

Ensure full compliance with HIPAA, SOC 2, ISO 27001, and the eSign Act

Deliver intuitive, mobile-friendly UX with Figma-to-HTML implementation

Create a scalable, API-ready architecture for future roadmap items

Outsource the entire product lifecycle—from concept to go-live

Key Challenges

Compliance-Centric Build

The project demanded strict adherence to healthcare and data protection regulations, including HIPAA, SOC 2, and ISO 27001, right from Phase 1.

Mobile & Web Parity

Ensuring a consistent and seamless user experience across both mobile and web platforms was essential to meet user expectations.

Tight Timeline

Phase 1 had to be completed, tested, and launched within a tight 12-week timeline, including User Acceptance Testing (UAT).

Workflow Flexibility

The platform needed to support varied workflows across healthcare, human resources, and legal departments, requiring high flexibility in design and functionality.

Product Ownership

With development and deployment being outsourced, full product ownership and control had to be maintained externally, which introduced additional coordination challenges.

Perigeon's Role as Product Outsourcing Partner

As a full-cycle product development partner, Perigeon Software managed everything from architecture to release:

Frontend (Web): Razor views, HTML5, Bootstrap, integrated from Figma designs
Mobile App: Developed in Flutter for cross-platform support (iOS & Android)
Backend: .NET REST APIs with OAuth-based secure access
Cloud: Azure App Services, Azure SQL, Azure Blob for encrypted document storage
Cloud & DevOps: Azure App Services, Blob Storage, Azure SQL, CI/CD pipeline
Scheduler API: Built for automated document expiration and status tracking

Mobile Experience Highlights

Dashboard for pending, signed, and expired documents
One-click mobile signing with biometric verification (where supported)
Push notifications for document reminders
Offline draft support with background sync
Consistent UX with web platform

Security and Compliance

AES-256 encryption at rest, TLS 1.2 for data in transit
eSign Act-compliant signature process with full audit trails
HIPAA safeguards: session timeouts, activity logs, access control
SOC 2-aligned security policies and ISO 27001-based information governance
Role-based access and tamper-proof audit logging

Agile Product Outsourcing

6-member agile squad (Frontend, Mobile, Backend, QA, DevOps, PM)
Bi-weekly sprint reviews and UAT with Valcare leadership
Jira-managed sprint cycle and GitHub CI workflows
Azure Monitor and Application Insights for diagnostics

Results & Business Impact

Web + Mobile Launch

Successfully launched Phase 1 across both web and mobile platforms within the 12-week deadline.

Compliance Success

Achieved full compliance with HIPAA, SOC 2, and ISO 27001 standards, ensuring data security and regulatory alignment.

Early Adoption

Over 500 users were onboarded within the first month post-launch, indicating strong initial adoption and market fit.

User Experience

Received a 4.8/5 average rating across App Store and web platforms, reflecting high user satisfaction and effective UX design.

Ready for Phase 2

Laid a strong foundation for upcoming development phases with scalable components like API integrations, workflow engine, and white-labeling options.

Let’s build your next SaaS product—securely, across platforms, and at scale.

Product Origin & Vision

SignBulB was the brain-child idea of Valcare Systems leadership — a bold vision to build a global, secure, scalable eSignature SaaS platform to eliminate manual signing friction in digital workflows.

When Valcare came to Perigeon:

They had no in-house technical or software engineering team

There was no legacy codebase
or platform

There was only a product idea and ambition

Perigeon supported them as an end-to-end product engineering and outsourcing partner, providing architecture, cloud infrastructure, development, deployment, security, monitoring, Agile discipline, payments, mobile apps, and QA orchestration.

SignBulB Product Capabilities (Engineered by Perigeon)

Web App eSignature

A secure, scalable eSignature platform designed to manage end-to-end signing workflows with precision, efficiency, and full compliance across multi-tenant, cloud-native environments.

Envelope creation with lifecycle tracking

Real-time status and audit visibility

Secure access with encrypted storage

Mobile eSign Experience

A seamless on-the-go signing solution built in Flutter, offering responsive performance, offline continuity, and optimized user experience for iOS and Android devices.

Streamlined previews from cloud storage

Fast signing with offline caching

Native payments with Stripe APIs

Cloud-Native Infrastructure

A robust, high-performance cloud environment engineered with containerization, observability, and zero-downtime deployment for reliable, scalable, and compliant signing operations.

Dockerized services with AKS scaling

Enforced isolation at service layer

Automated deployments with resilience

SignBulB Product Capabilities (Engineered by Perigeon)

Web App eSignature

A secure, scalable eSignature platform designed to manage end-to-end signing workflows with precision, efficiency, and full compliance across multi-tenant, cloud-native environments.

Envelope creation with lifecycle tracking

Real-time status and audit visibility

Secure access with encrypted storage

Mobile eSign Experience

A seamless on-the-go signing solution built in Flutter, offering responsive performance, offline continuity, and optimized user experience for iOS and Android devices.

Streamlined previews from cloud storage

Fast signing with offline caching

Native payments with Stripe APIs

Cloud-Native Infrastructure

A robust, high-performance cloud environment engineered with containerization, observability, and zero-downtime deployment for reliable, scalable, and compliant signing operations.

Dockerized services with AKS scaling

Enforced isolation at service layer

Automated deployments with resilience

Core Challenges at Kickoff

Key Architecture
Highlights

Backend services Docker-containerized

Deployed on AKS Kubernetes clusters

Used Horizontal Pod Autoscaling for signing workloads

Zero-downtime deployments

File storage via Azure Blob Containers

Dependency tracing + API mapping via Application Insights

Billing automation via Stripe webhooks + credit unlock

Offline-capable signing sessions via mobile caching layer in Flutter

Compliance-Driven Secure Code

✔ All APIs HTTPS enforced

✔ Database and document encryption at-rest and in-transit

✔ RBAC and tenant-isolated access

✔ Secure token-based signer authentication

✔ Zero PHI leaks in logs

✔ Key retention and secrets stored securely in Azure infra

✔ Container-network isolation policies

✔ Zero-trust workload execution principles.

QA & Product Quality Discipline Followed

QA Principles & Activities

Perigeon ensured product reliability and stability through a structured QA discipline focused on platform resilience, data integrity, and frictionless user workflows.

QA Process Followed

Comprehensive QA Plan created before development handoff to define test scope, risks, and acceptance criteria.

Full test coverage across critical components:

.NET signing APIs

Stripe billing workflows

Blob Storage document retrievals

User authentication and permission scopes

Envelope → recipient → field signing flows

Mobile signing continuity (iOS + Android)

Platform reliability validation including availability checks, failure simulations, and dependency graph tracing using Application Insights.

Hybrid testing cycles with manual + automated signing tests across web and mobile.

End-to-end UAT completed on the Flutter app to ensure smooth signing experience for all user roles.

Security-focused QA confirming signature integrity, document protection, and vulnerability-free signing flows.

Key QA Outcomes

No workflow breaks post launch

Multi-signer signing session accuracy verified

Billing + wallet activation automated and tested via Stripe

Document storage and retrieval validated from Blob

Container workloads stability validated in AKS clusters

Perigeon followed a true Agile delivery methodology throughout the product engineering lifecycle:

Requirements broken into user-story driven backlog items

Continuous backlog grooming with Valcare stakeholders

Incremental, confidence-fed feature delivery

Engineering demos + feedback loops (Dev → QA → UAT → Prod readiness)

Course corrections validated early via working UI, signing ergonomics, and dependency safety

No big-bang rollout, ensuring product stability and governance scalability from day one

Why this matters here:

Valcare had no in-house tech team, so Perigeon guided them through structured Agile ceremonies while engineering and validating the product incrementally.

Security & HIPAA-Compliant Engineering Standards

Although SignBulB does not use Salesforce, it fully adheres to Microsoft Azure secure coding practices and maintains a compliance-ready architecture. Wherever applicable, the platform aligns with HIPAA-compliant engineering principles to ensure data integrity, confidentiality, and secure operations.

Core Security Measures

Encrypted database storage (Azure SQL)

Blob and document encryption at rest and in transit

Role-Based Access Control (RBAC) for granular access management

Secure key retention using Azure Key Vault

No PHI exposure in logs through strict logging discipline

Infrastructure-level encryption via Azure Storage and Application Insights

Dependency tracing without sensitive payloads

Microservice isolation using Docker and Kubernetes (AKS private clusters)

Secure Coding Principles Applied

All APIs enforce HTTPS end-to-end

User authentication tokens securely stored and managed

PHI access protected through server-side validations and controlled access logic

Signing and audit data stored in isolated tenant environments

Container-level network policies prevent unauthorized cross-communication

Zero-trust execution model applied across workloads

Reliability & Business Impact Summary

Signing speed

0 %

68% faster document signing cycles

Platform uptime

0 %

99.3% uptime via Application Insights

Sign completion

0 %

52% higher signing completion rate

Collaboration

Multi-signer envelopes processed accurately

Mobile adoption

Launched Swift mobile app on iOS + Android using Flutter

Billing continuity

Stripe API enabled for all plan payments & credit unlock

Security

Fully encrypted and secured code principles applied

Valcare envisioned. Periegeon engineered & secured. SignBulB launched — a containerized, mobile-first, Microsoft-native eSignature SaaS success.

Reliability & Business Impact Summary

Signing speed

0 %

68% faster document signing cycles

Platform uptime

0 %

99.3% uptime via Application Insights

Sign completion

0 %

52% higher signing completion rate

Collaboration

Multi-signer envelopes processed accurately

Mobile adoption

Launched Swift mobile app on iOS + Android using Flutter

Billing continuity

Stripe API enabled for all plan payments & credit unlock

Security

Fully encrypted and secured code principles applied

Valcare envisioned. Periegeon engineered & secured. SignBulB launched — a containerized, mobile-first, Microsoft-native eSignature SaaS success.

Frequently asked questions

What is SignBulb used for?

Yes, The QA process verified call actions across Leads, Contacts, Accounts, and Opportunities, which appear in multiple Salesforce Clouds. Since the integration relies on Salesforce CTI and standard APIs—not cloud-specific features—it is compatible with all major Salesforce Clouds where these objects and CTI are supported.

Is SignBulb secure for legal documents?

No.
Agents can make calls using Click-to-Dial inside Salesforce and track all call activities directly from Salesforce. The integration eliminates app-switching and allows agents to perform all CallHippo actions within Salesforce.

Does SignBulb work on mobile devices?

Yes.
The system automatically synchronizes contacts and activities in real time between Salesforce and CallHippo, ensuring agents always have up-to-date information.

What industries use SignBulb?

Yes.
The solution supports automated workflows, configurable triggers, custom actions, and integration testing aligned with each client’s business processes. The Agile approach ensured iterative customization throughout the project.

Can multiple people sign the same document?

Yes.
The features described—Click-to-Dial, activity logging, CTI integration, real-time sync—are all Lightning-compatible. The QA process validated functionality across Salesforce modules, which indicates Lightning Experience support.

Looking to Modernize Your E-Signature & Document Automation Platform?

Perigeon helps forward-thinking businesses like SignBulb build secure, scalable, and high-performance e-signature ecosystems. From seamless signing experiences to automated document workflows, we engineer platforms that are reliable, compliant, and future-ready.

Have an Idea ?

We’d Love to Hear from you.

(*) Asterisk denotes mandatory fields

Success Stories

Discover how our innovative app and web solutions have driven growth for our clients. Experience enhanced engagement and measurable success. Partner with us for transformative results.

SignBulb: The Enterprise eSignature Platform Built for Compliance and Scale

SignBulb From Valcare’s Vision→to Perigeon’s Engineering

Project Objectives

Key Challenges

Compliance-Centric Build

Mobile & Web Parity

Tight Timeline

Workflow Flexibility

Product Ownership

Perigeon's Role as Product Outsourcing Partner

Mobile Experience Highlights

Security and Compliance

Agile Product Outsourcing

Results & Business Impact

Web + Mobile Launch

Compliance Success

Early Adoption

User Experience

Ready for Phase 2

Let’s build your next SaaS product—securely, across platforms, and at scale.

Product Origin & Vision

When Valcare came to Perigeon:

SignBulB Product Capabilities (Engineered by Perigeon)

Web App eSignature

Mobile eSign Experience

Cloud-Native Infrastructure

SignBulB Product Capabilities (Engineered by Perigeon)

Web App eSignature

Mobile eSign Experience

Cloud-Native Infrastructure

Core Challenges at Kickoff

Key Architecture Highlights

Compliance-Driven Secure Code

QA & Product Quality Discipline Followed

QA Principles & Activities

QA Process Followed

Key QA Outcomes

Requirements broken into user-story driven backlog items

Continuous backlog grooming with Valcare stakeholders

Incremental, confidence-fed feature delivery

Engineering demos + feedback loops (Dev → QA → UAT → Prod readiness)

Course corrections validated early via working UI, signing ergonomics, and dependency safety

No big-bang rollout, ensuring product stability and governance scalability from day one

Why this matters here:

Security & HIPAA-Compliant Engineering Standards

Core Security Measures

Secure Coding Principles Applied

Reliability & Business Impact Summary

Collaboration

Mobile adoption

Billing continuity

Security

Reliability & Business Impact Summary

Collaboration

Mobile adoption

Billing continuity

Security

Frequently asked questions

Looking to Modernize Your E-Signature & Document Automation Platform?

Have an Idea ?

(*) Asterisk denotes mandatory fields

Success Stories

Salesforce

Our Other Expertise

United States

Headquaters

India

Corporate Office

Registered Office

Contact Us

Sales Inquiry

HR or Job Related

Email Us

Sales Inquiry

HR or Job Related

Key Architecture
Highlights