log Sentinel
Bozidar Bojanoff, a senior software engineer with experience at Ericsson and TomTom, identified a critical gap in digital security: audit trails that even system administrators couldn't modify. The inspiration came from real-world incidents—during US elections, hackers would infiltrate networks and clear their tracks. log Sentinel was born to solve this problem by using blockchain technology to create immutable, tamper-proof logs of every action in a digital system.
Launched in 2017, the team built log Sentinel as a SaaS platform targeting B2B customers with diverse security and compliance needs. They developed a freemium model starting at €25-30/month for small startups, scaling up to custom enterprise pricing for banks and large organizations. The platform's value proposition was simple but powerful: complete audit trail integrity that no one—not even internal personnel—could compromise.
Starting from zero revenue, the team employed both inbound and outbound strategies. Remarkably, 50% of their early customers came inbound through organic search. People literally Googled for their exact solution, found log Sentinel, evaluated competitors, and chose them. The other half came through outbound sales and personal content marketing efforts. This organic interest validated the market need.
The SaaS model worked exceptionally well for finding customers—they achieved zero churn among their 20-customer base. However, Bozidar quickly realized that a $200/month average price point couldn't support the 3-6 month enterprise sales cycles required for B2B security software. "You can't make a six-month sales cycle work on a $200 per month price point," he acknowledged. This forced a strategic pivot: they began targeting larger enterprises with custom pricing based on log volume, and reconsidering their entire pricing architecture to focus on higher-value customers who could justify longer decision processes.
After a year, log Sentinel has grown to $4,000 MRR ($48,000 ARR) with 20 customers and $110,000 raised from private seed investors. With a team of 7 split between Bulgaria and Munich, they're increasing marketing budgets and rethinking their sales and pricing strategy. They already have contracts signed with major customers (including two banks) that will be paid upfront, positioning them for accelerated growth. The challenge ahead: scaling predictably while maintaining their zero-churn track record and shifting upmarket to customers who value immutability over price.
Similar Companies
247.ai
$25.0M/mo247.ai, founded by PV Cannon in 2000, is an AI-powered customer service automation platform serving over 150 enterprise customers with $300M+ in ARR. The company raised only $20M from Sequoia (2003) and bootstrap, achieving 10% net profit margins while maintaining a 12-month CAC payback period and 100% net revenue retention. Despite a security breach setback around 2018, 247.ai has recovered and recently achieved 20% new revenue booking growth in their best quarter.
Madwire
$10.0M/moMadwire is a comprehensive SaaS platform for small businesses (1-100 employees) that combines CRM, payments, invoicing, billing, e-commerce, and multi-channel marketing tools in a single platform. Founded in 2009, the company has grown to $120M ARR serving 20,000 customers with an average revenue per user of $500/month, while maintaining strong unit economics ($3,000-$4,000 CAC with 3-month payback) and recently turning profitable with a focus on reaching 15-20% EBITDA margins. The company is exploring an IPO within 12-18 months without having raised substantial capital beyond an initial $7.5M.
Brandwatch
$5.0M/moBrandwatch is an enterprise SaaS social intelligence platform founded in August 2007 by Giles Palmer that crawls 80 million websites and aggregates social media feeds to provide brands with real-time insights about conversations mentioning them and competitors. Operating profitably at scale with 1,500 enterprise customers paying an average ACV of $30,000, the company generated over $60M ARR in 2017 and grew approximately 30% year-over-year while maintaining a disciplined approach to capital deployment.
Braze
$5.0M/moBraze (formerly Appboy) is a customer engagement platform founded in 2011 that helps large consumer-scale companies orchestrate personalized messaging across multiple channels. With 600 enterprise customers paying $100k+ ACVs, the company has grown to ~$60M ARR (5M/month) with a net revenue retention of ~140%, demonstrating strong expansion revenue from existing customers. Having raised $170M total and grown to 300 employees, Braze is positioned to reach $100M+ ARR within the next year.
Jellyvision
$5.0M/moJellyvision evolved from a 1990s gaming company making virtual game show hosts on CD-ROMs into a B2B enterprise SaaS platform called Alex. Since relaunching in 2002, they've built a subscription business helping large employers navigate employee benefits decisions, now serving 1,400 customers representing 18 million employees with a $60M+ ARR, over 100% net revenue retention, and a 51% five-year CAGR—all while remaining largely bootstrapped and cash-flow positive since 2009.