AI SDR Platform Development

About the client

The client provides an AI-powered sales development platform for B2B organizations, enabling automated outreach, persona targeting, and multi-channel engagement across email and LinkedIn for startups and enterprises.

The Story

The client partnered with FiftyFive Technologies to design and engineer a scalable AI-driven sales automation platform that could operate as a virtual SDR. The goal was to combine advanced AI workflows, automated list-building, persona-based targeting, and multi-channel campaign management while ensuring compliance, stability, and high deliverability. FiftyFive delivered a full-cycle engagement covering architecture, frontend and backend development, AI integration, and UI/UX design to bring the product to market quickly and cost-effectively.

Challenges

• > Managing high-volume personalized outreach across LinkedIn and email simultaneously.

• > Overcoming engagement tracking issues caused by caching, privacy filters, and bots.

• > Designing UI that balances simplicity with enterprise-grade functionality.

• > Integrating AI agents and natural language workflows without impacting responsiveness.

• > Structuring competitive multi-tier pricing in a crowded SDR automation market.

The Solution

• > Developed modular, responsive UI using React and Next.js with real-time campaign management and video email preview support.

• > Built backend services with Node.js and Python for automation workflows and high-volume scalability.

• > Integrated LangChain-based AI agents for lead research, persona analysis, and personalized message generation.

• > Deployed infrastructure on AWS with CI/CD pipelines, containerization, and monitoring for stability and compliance.

• > Delivered flexible pricing models, including free-forever and enterprise tiers, enabling broader market adoption.

• > Dedicated team included frontend engineers, backend developers, AI/ML specialists, DevOps, UI/UX designers, and QA testers working in agile sprints.

The Outcome

The platform reduced outbound campaign setup time by 70% and cut operational costs by 40%. AI-driven workflows increased response rates by 35% and meeting conversions by 28%, directly improving client revenue. With FiftyFive’s engineering expertise, the client gained faster time-to-market, a competitive edge over enterprise-only SDR tools, and improved goodwill by offering scalable pricing accessible to startups and mid-market businesses.