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Founded in 2011, CallHub is an easy to use and award winning voice broadcasting, phone banking and SMS broadcast software that seamlessly integrates with users' existing systems. They are used across 200 countries and world renowned campaigns run by Uber, Greenpeace, Harvard University, Princeton University, Change.org, Save the Children, United Workers Union, among many others.

Check out the video below for a sneak peek into the product!

CallHub, headquartered in Washington DC, is the leading digital organizing platform for political campaigns, nonprofits, advocacy groups, and businesses seamlessly interact with their audiences worldwide.

The product

Their call center software enables unlimited agents to connect with people over a call to have personalized one-on-one conversations. The range of automated dialers (which include Power, Preview, Predictive, and Fast Click dialers) gives clients complete control over their dialing speed based on your needs while maintaining compliance. With features like answering machine detection, voicemail drop, phone number verification, and many more, the software ensures you spend maximum time having quality conversations. CallHub's mass texting solution lets users connect with people over SMS with solutions like Bulk SMS, MMS, SMS Opt-in and peer-to-peer texting.

We are Proximity - a global team of coders, designers, product managers, geeks and experts. We solve hard, long-term engineering problems and build cutting edge tech products.

About us

Born in 2019, Proximity Works is a global, fully distributed tech firm headquartered in San Francisco - with hubs across Mumbai, Dubai, Toronto, Stockholm, and Bengaluru. We’re in the business of solving high-stakes engineering challenges with AI-powered solutions tailored for industries like sports, media & entertainment, fintech, and enterprise platforms. From real-time game analytics and ticketing workflows to creative content generation, we help build software that serves millions every day.

About the Founders

At the helm is Hardik Jagda, CEO - a technologist with a startup DNA who brings clarity to complexity and a passion for building delightful experiences.

Milestones & Impact

• Trusted by some of the world’s biggest players - from major media & entertainment giants to one of the world’s largest cricket websites and the second-largest stock exchange in the world.
• Delivered game-changing tech: slashing content creation by 90%, doubling performance metrics for NASDAQ clients, and accelerating speed/performance wins for platforms like Dream11.

Culture & Why It Matters

• Fully distributed and flexible: work 100% remotely, design your own schedule, build habits that work for you and not the other way around.
• People-first culture: Community events, “Proxonaut battles,” monthly off-sites, and a liberal referral policy keep us connected even when we’re apart.
• High-trust environment: autonomy is encouraged. You’re empowered to act, learn fast, and iterate boldly. We know great work comes when talented people have space to think and create.

Quantiphi is an award-winning AI-first digital engineering company driven by the desire to reimagine and realize transformational opportunities at the heart of the business. Since its inception in 2013, Quantiphi has solved the toughest and most complex business problems by combining deep industry experience, disciplined cloud, and data-engineering practices, and cutting-edge artificial intelligence research to achieve accelerated and quantifiable business results.

Tarento is a unique blend of Nordic efficiency and Indian technological depth, operating from offices in Sweden, Finland, Norway, and India. With its largest technology hub in Bangalore and strong consulting and data management capabilities in Finland, the company helps organisations navigate digital transformation with no-hassle, high-quality services across enterprise applications, data & information management, and custom engineering solutions.

Founded in 2009 and strengthened through strategic milestones—including becoming part of the Acando Group and acquiring Finnish data management consultancy DATPRO—Tarento has built a comprehensive capability stack that bridges technology and business. Today, the company supports clients across the Nordics and India, solving core business challenges through a powerful combination of advanced technology skills, deep data expertise, and reliable long-term application management services.

RIA Advisory LLC (RIA) is a business advisory and technology company that specializes in the field of Revenue Management and Billing for Banking, Payments, Capital Markets, Exchanges, Utilities, Healthcare and Insurance industry verticals.

From our vast and in-depth subject matter expertise, we are empowering our customers in resolving complex issues and streamlining business and technology process with increased ROI.