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
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
Category
Challenge
Team Capability
No internal tech team
Backend Platform
Only concept, no code
Deployment
No container strategy
Storage
No secure document retention system
Observability
No monitoring or tracing
Payments
No automated billing solution
Mobile
No iOS/Android support
Perigeon’s Engineering & DevOps Solution
Perigeon engineered SignBulB using the following Microsoft + DevOps stack:
| Tech | Purpose |
|---|---|
| .NET Core Web App | Core signing backend |
| Azure SQL Database | Encrypted metadata (users, envelopes, recipients, signature fields, audit logs) |
| Azure Blob Storage (via Azure Storage) | Uploaded documents, signing payloads, signed outputs |
| Azure Storage | Asset retention & encryption |
| Application Insights | Real-time logs, tracing, uptime, failures, dependency calls |
| Docker | Containerized microservices |
| Kubernetes (AKS – Azure Kubernetes Service) | Orchestration, auto-scaling, deployment resiliency |
| Stripe API | Payment gateway, subscription billing, wallet credits |
| Flutter Mobile App | iOS + Android signing UI, offline signer continuity |
Cloud-Native, Containerized Platform
Perigeon engineered SignBulB for Valcare from a standalone vision into a cloud-native eSignature SaaS product using .NET Core, Azure SQL, Azure Blob & Storage, Docker containers, Kubernetes orchestration on Azure AKS (HPA-enabled), Stripe API billing, Flutter mobile apps (iOS/Android with offline signing continuity), Agile sprint-based delivery, encrypted audit trails, and HIPAA-aligned secure code principles.
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.
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.
Free Consultation
Turn your Salesforce ideas into real business results
Planning a Salesforce project or exploring ways to improve your existing setup? Let’s connect. Our experts will understand your business goals, evaluate your requirements, and guide you toward the right Salesforce solution—no obligation, just clear direction.
Whether you’re starting fresh or optimizing what you already have, Perigeon is here to help you move forward with confidence.
Ujval Shah
CEO, Perigeon Software Pvt. Ltd.
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