Build Your Own Formstack Sign: Secure, Custom E-Signature Software
Stop paying escalating license fees. Get a fully-owned, compliant, and AI-powered e-signature platform tailored to your exact workflows.
TRUSTED BY GLOBAL LEADERS AND INNOVATIVE STARTUPS
When Off-the-Shelf Isn't Enough
You're here because standard e-signature tools like Formstack Sign are hitting a wall. They're either too rigid for your unique workflows, too expensive at scale, or raise security concerns. We specialize in developing custom, enterprise-grade e-signature platforms that give you complete control, ironclad security, and seamless integration with the tools you already use. Let's build the exact document workflow solution your business needs, not the one a SaaS vendor wants to sell you.
Build Your Platform with Enterprise-Grade Features
We develop your custom e-signature solution with a comprehensive suite of features designed for security, scalability, and seamless user experience.
Core E-Signature Engine
Develop a robust engine for secure document uploads, dynamic signature field placement, and legally binding signature capture (typed, drawn, or uploaded).
Advanced Security & Compliance
Implement end-to-end encryption, detailed audit trails, two-factor authentication (2FA), and identity verification to meet standards like ESIGN, UETA, and HIPAA.
Custom Workflow Automation
Design complex, multi-stage approval workflows with conditional logic, automated reminders, and role-based routing to eliminate manual processes.
Seamless API & Systems Integration
Build powerful APIs to connect your platform with existing CRM, ERP, HRMS, and document management systems like Salesforce, SAP, and SharePoint.
Dynamic Template Management
Enable users to create, save, and manage reusable document templates with pre-filled fields, reducing document preparation time significantly.
Complete White-Label Branding
Gain full control over the user interface. Your platform will feature your logo, color scheme, and domain, providing a consistent brand experience.
AI-Powered Document Intelligence
Incorporate AI to automatically classify documents, extract key data points from contracts, and flag non-standard clauses for review.
Mobile-First Responsive Design
Ensure a flawless signing experience on any device. Our mobile-first approach guarantees full functionality on desktops, tablets, and smartphones.
Role-Based Access Control (RBAC)
Implement granular permission levels for users, teams, and departments, ensuring sensitive documents are only accessible to authorized personnel.
Bulk Sending & Tracking
Empower your teams to send a single document to hundreds of recipients simultaneously and track the status of each signature in real-time.
Comprehensive Analytics Dashboard
Gain insights into your document workflows with a dashboard that tracks signing times, completion rates, and other key performance indicators.
Secure Document Archiving
Develop a secure, searchable repository for all signed documents, with customizable retention policies to meet your compliance requirements.
Your Strategic Partner for Custom E-Signature Solutions
Building mission-critical software requires more than just code. It requires a partner who understands security, scale, and the nuances of your business.
Ironclad Security & Compliance
We are CMMI Level 5, SOC 2, and ISO 27001 certified. Your platform is built on a foundation of enterprise-grade security from day one.
Compliance Mastery
Our experts have deep experience building solutions that adhere to ESIGN, UETA, HIPAA, and GDPR, ensuring your documents are legally binding and compliant.
AI-Enabled Efficiency
Our AI-augmented development process accelerates timelines and reduces costs, delivering a superior product faster than traditional methods.
Deep Integration Expertise
We don't just build apps; we build ecosystems. We ensure your e-signature platform communicates flawlessly with your core business systems.
You Own the Intellectual Property
Unlike SaaS, the final product, code, and data are 100% yours. No vendor lock-in, no escalating fees—just a valuable business asset.
Transparent Partnership
We operate with complete transparency in pricing, project management, and communication. You're always in control.
Top 5% Vetted Talent
Work with our 100% in-house team of elite, AI-enabled developers, architects, and security specialists dedicated to your success.
20+ Years of Proven Success
Since 2003, we've delivered over 3000 complex software projects for clients from startups to Fortune 500 companies.
Risk-Free Engagement
Start with a 2-week paid trial to ensure our team is the perfect fit. We also offer a free-replacement guarantee for your peace of mind.
Built on a Modern, Scalable Technology Stack
We use proven, enterprise-ready technologies to ensure your e-signature platform is secure, reliable, and future-proof.
Our Blueprint for Success
Our agile and transparent development process ensures your project is delivered on time, on budget, and to your exact specifications.
1. Discovery & Strategy
We dive deep into your workflows, compliance needs, and integration points to create a detailed project roadmap and architecture plan.
2. UI/UX Design & Prototyping
We design an intuitive, user-friendly interface and create interactive prototypes so you can experience the platform before we write a line of code.
3. Agile Development
Working in two-week sprints, our AI-enabled team builds and tests the platform. You get regular demos and opportunities to provide feedback.
4. Deployment & Integration
We handle the full deployment to your chosen cloud environment (AWS, Azure, GCP) and manage the seamless integration with your existing systems.
5. Support & Evolution
Our partnership doesn't end at launch. We provide ongoing support, maintenance, and strategic guidance to evolve the platform as your business grows.
Proven Results in Secure Document Management
We don't just talk about building great software; we have a track record of delivering transformative solutions for our clients.
Case Study: Enterprise LegalTech Firm
Industry: Legal Technology
Client Overview: A leading provider of case management software for law firms was struggling with a disconnected, third-party e-signature solution. The process was clunky, lacked robust security features for sensitive legal documents, and did not meet HIPAA compliance standards required by many of their clients.
Key Challenges:
- Lack of HIPAA-compliant e-signature capabilities.
- Poor user experience due to disjointed third-party integration.
- Inability to create complex, court-admissible audit trails.
- Concerns over data residency and security of sensitive client information.
Our Solution:
We partnered with the client to build a fully integrated, HIPAA-compliant e-signature module directly within their existing platform. Our solution included:
- End-to-end encryption for data in transit and at rest.
- A custom-built audit trail engine that logged every document interaction.
- Seamless integration with their user authentication and case management workflows.
- A dedicated, secure cloud environment to ensure data sovereignty.
"CIS built a solution that not only solved our compliance problem but also dramatically improved our user experience. Their security expertise was invaluable."
Case Study: HR Tech SaaS Platform
Industry: Human Resources Technology
Client Overview: A fast-growing HRMS platform wanted to increase customer stickiness and open new revenue streams by adding embedded e-signature functionality for employment contracts and onboarding documents. They needed a solution that was fast to implement, fully white-labeled, and scalable to handle thousands of documents per day.
Key Challenges:
- Aggressive time-to-market deadline.
- Need for a completely seamless, white-label user experience.
- Requirement for a highly scalable and cost-effective architecture.
- Lack of in-house expertise in building secure document workflow APIs.
Our Solution:
We developed a robust, multi-tenant e-signature microservice with a comprehensive REST API. This allowed the client to quickly integrate the functionality into their platform. Key aspects included:
- A flexible API for creating, sending, and managing documents programmatically.
- A serverless architecture on AWS to ensure scalability and control costs.
- Complete branding control via the API, making the feature look native to their app.
- A secure webhook system for real-time status updates.
"The API-first approach from CIS was exactly what we needed. We integrated a complex feature in record time, and it's been rock-solid ever since."
Case Study: National Real Estate Brokerage
Industry: Real Estate
Client Overview: A large real estate enterprise with hundreds of agents was drowning in paperwork. Their process for managing purchase agreements, disclosures, and closing documents was manual, slow, and prone to errors. They needed a centralized platform to digitize the entire contract lifecycle.
Key Challenges:
- Managing complex documents with multiple signers and dependencies.
- Ensuring compliance with state-specific real estate regulations.
- Providing a simple, mobile-friendly experience for agents and clients on the go.
- Integrating with their existing agent portal and transaction management software.
Our Solution:
We designed and built a bespoke, cloud-based document management and e-signature platform tailored for the real estate industry. The platform featured:
- A central repository for all state-approved real estate forms.
- Automated workflows for routing documents to buyers, sellers, agents, and lawyers.
- A mobile-responsive interface for signing and managing documents from any device.
- Deep integration with their CRM to auto-populate contract fields.
"CIS transformed our operations. What used to take weeks of back-and-forth now takes days. Our agents are more efficient, and our clients are happier."
What Our Clients Say
Our success is measured by the success of our clients. Here's what they have to say about our partnership.
"CIS delivered a rock-solid e-signature platform that integrated perfectly with our Salesforce instance. Their security knowledge is top-notch, and they truly understood our complex compliance needs from day one."
"We needed to add signing capabilities to our app fast. The CIS team built a seamless, white-labeled API for us in record time. They are true professionals who deliver on their promises."
"The custom workflow automation CIS built for us has been a game-changer. It has eliminated countless manual hours and significantly reduced document errors. I highly recommend their services."
"Their commitment to security and their CMMI Level 5 processes gave us the confidence to move forward. The final product exceeded our expectations in every way. A truly world-class development partner."
"Moving from an expensive SaaS e-signature solution to our own custom platform built by CIS was the best decision we made. We have more control, better features, and a significantly lower total cost of ownership."
"The AI-powered features they suggested and implemented have given us a real competitive edge. They don't just build what you ask for; they think strategically about how to make your product better."
Frequently Asked Questions
Have questions? We have answers. Here are some common queries about building a custom e-signature platform.
The cost varies based on complexity. A Minimum Viable Product (MVP) with core e-signature features can start around $25,000 - $40,000. A more feature-rich platform with custom workflows, deep integrations, and advanced compliance can range from $60,000 to $150,000+. We provide a detailed, transparent estimate after our initial discovery session.
Timelines also depend on complexity. An MVP can typically be developed and launched within 3-4 months. A full-scale enterprise solution may take 6-9 months. Our agile process ensures we deliver value in incremental sprints, allowing you to see progress and provide feedback continuously.
Absolutely. We build all our e-signature solutions to be fully compliant with the Electronic Signatures in Global and National Commerce (ESIGN) Act in the United States, as well as the Uniform Electronic Transactions Act (UETA). This ensures that signatures captured on your platform are legally equivalent to handwritten signatures.
Yes, this is one of the primary advantages of a custom solution. We specialize in building robust APIs to integrate your e-signature platform seamlessly with your existing systems, including CRMs (Salesforce, HubSpot), ERPs (SAP, Oracle), document storage (SharePoint, Google Drive), and any other proprietary software.
A custom solution gives you complete control over the security architecture. You decide the hosting environment (e.g., a private cloud), data residency, and specific encryption protocols. We can implement security measures tailored to your unique risk profile and compliance needs, which is often not possible with a one-size-fits-all SaaS product.
You do. Upon project completion and final payment, we transfer 100% of the intellectual property, including all source code and data, to you. You have full ownership and control over your asset, free from any vendor lock-in or recurring license fees.
Ready to Build Your Own E-Signature Platform?
Let's discuss your unique requirements. Our experts will provide a detailed project plan, transparent cost breakdown, and a clear roadmap to success. No obligations, just valuable insights.
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