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Decibel Partners

Boston, MA · Invests in US · Website

Check size

$100K-$10M

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SeedSeries AB2B SaaSAI & Machine LearningDeveloper ToolsCybersecurityHealthcare & BiotechHardware & DevicesEnterprise SoftwareDeveloper Tools & InfrastructureSecurity & CybersecurityBiotech & Life Sciences

Thesis

Essential infrastructure software used by engineering, security, and data teams. Founded by technical entrepreneurs who deeply understand infrastructure challenges. Partners commit early with conviction and provide hands-on support.

Likely not a fit for

Non-technical founders, consumer apps, companies outside core expertise areas, hardware-only solutions

How they invest

Lead or follow
Leads or follows
Typical decision
~2 weeks
Warm intro
Preferred
Involvement
Takes a board seat
Fund status
Actively deploying
Decision process
Partnership vote

Partners & team

5 contacts on file

LI

Lauren Ipsen

Partner · Primary contact

AF

Alessio Fanelli

Partner

JS

Jon Sakoda

Founder & General Partner

DN

Dan Nguyen-Huu

Partner

JL

Jess Leão

Partner

Portfolio

AbacusEnterprise Software

Abacus.AI is the leading enterprise AI platform built for banks, credit unions, and financial institutions, providing secure and compliant AI solutions.

AkuityEnterprise Software

Akuity is an enterprise software delivery platform that modernizes application delivery with AI-powered intelligence and continuous deployment.

Answer.AIEnterprise Software

Answer.AI is a new kind of AI R&D lab which creates practical end-user products based on foundational research breakthroughs. It aims to harness AI for practical applications and improve accessibility through iterative development and research.

AomniEnterprise Software

Aomni is transforming the way sales teams operate. Our AI-powered platform revolutionizes sales by generating laser-focused value propositions, crafting hyper-relevant sales materials, and tailoring pitches to each stakeholder's unique needs.

BicycleEnterprise Software

Bicycle AI is an agentic analytics platform that turns your real-time operational data into timely insights and automated actions, preventing revenue leaks and driving growth.

BlamelessEnterprise Software

Blameless offers the only complete reliability engineering platform that brings together AI-driven incident resolution, blameless retrospectives, SLOs/Error Budgets, and reliability insights reports and dashboards, enabling businesses to optimize reliability and innovation.

BotpressEnterprise Software

Botpress is a complete AI agent platform that allows users to build and customize conversational agents using large language models (LLMs) to guide conversations and tasks. It offers features such as knowledge bases, human handoff, and conversation data management.

BrightwaveEnterprise Software

Brightwave is the AI research platform built to help professionals understand the world's most complex problems.

Credo AISecurity Cyber

Credo AI is a leader in AI governance, helping companies manage AI risks and compliance. The company focuses on responsible AI practices and offers a centralized, automated solution for AI lifecycle governance.

CubeFintech Payments

Cube Exchange is a secure, transparent, and efficient digital asset marketplace offering a hybrid platform for trading cryptocurrencies. It aims to inspire confidence in crypto through advanced security measures and a user-friendly trading experience.

DreadnodeSecurity Cyber

Dreadnode is at the forefront of offensive AI research and development, providing advanced tools and solutions for evaluating and enhancing the security of AI systems. Their platform includes offensive agents, AI red teaming, and practice environments for cybersecurity professionals.

Dropzone AISecurity Cyber

Dropzone AI provides an AI SOC Analyst platform that augments security analysts with unlimited intelligence for fast, detailed, and accurate investigations.

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Research briefRead more
Decibel Partners Research Investment Thesis Decibel Partners is an independent venture capital firm founded in partnership with Cisco that invests exclusively in essential infrastructure software used by engineering, security, and data teams. The firm believes that the most impactful technology companies are built by technical founders who have deep domain expertise and a passion for solving critical infrastructure challenges. Sector Focus Decibel focuses on three primary domains: Developer Platforms & Infrastructure: Cloud-native application delivery (Kubernetes, CI/CD, observability) Backend development platforms and tools Open source infrastructure projects Software supply chain security Design and prototyping tools for technical teams Cybersecurity: Application security and vulnerability management Identity and access management Email and endpoint security Attack surface management Threat detection and response Cloud security compliance AI-powered security solutions (agentic threat hunting, autonomous alert investigation) Data, ML, and AI Infrastructure: Data pipelines and orchestration ML operations and management AI agent platforms and sandboxes Responsible AI and governance Real-time analytics and business intelligence Autonomous software solutions Stage Focus Decibel invests primarily in early-stage companies: Seed and early growth companies with initial product-market validation Companies with technical founders and differentiated approaches Strategic follow-on investments in portfolio companies The firm explicitly maintains a small portfolio to provide focused, hands-on support to each founder. Investment Approach Decibel takes a founder-first, expertise-driven approach centered on four core values: Know Your Domain - Partners maintain deep technical expertise in their focus areas and decline investments outside their domain knowledge Build Trust Through Transparency - Founders can reach the firm 24/7 with direct, honest feedback Put Founders First - Success is measured through founder success and the firm actively helps portfolio companies leverage Decibel's resources Have Conviction. Invest Early - The firm commits resources and time when companies are unproven, recognizing the critical nature of early-stage investment Play the Long Game - Long-term focus on supporting founders through the many twists and turns of building enduring businesses Team & Advisory Board Core Team: Jon Sakoda, Founder & General Partner - Serial entrepreneur and early-stage investor. Former General Partner at New Enterprise Associates where he started their seed program and worked with BlueJeans (Verizon), Cloudflare (NYSE), Elastic (NYSE), MongoDB (NASDAQ), and others. Previously CTO/VP Products at IMlogic (acquired by Symantec). Harvard College graduate. Dan Nguyen-Huu, Partner - Focus on ML/AI, cloud infrastructure, and cybersecurity. Former VP at Battery Ventures leading investments in Databricks, SumoLogic, Expel, Contrast Security, InfluxData. Earlier experience at VMware and UBS technology banking. Forbes 30 Under 30 in VC (2019). Alessio Fanelli, Partner Jess Leão, Partner Founder Advisors (all entrepreneurs with successful exits): Amy Chang (Accompany founder) Andrew Peterson (Signal Sciences founder) Bhaskar Sunkara (AppDynamics founder) Dug Song (Duo Security co-founder) François Dufour (Founder Advisor) Jon Oberheide (Duo Security co-founder) Mallik Mahalingam (Springpath founder) Marty Roesch (Sourcefire founder) Mohit Lad (ThousandEyes founder) Ricardo Oliveira (ThousandEyes founder) Portfolio Companies Decibel has built a substantial portfolio with 50+ portfolio companies across all three focus areas. Notable recent investments and active portfolio companies include: Developer Platforms: Akuity (Advanced Kubernetes delivery, from Argo creators) Penpot (Open source design platform) Platformatic (Fast backend development) Root.io (Container supply chain security) NocoDB (Open source no-code database tool) Cube (Semantic layer for data apps) UserClouds (Privacy-as-a-service) Botpress (AI conversational platform) - $25M Series B (Jul 2025) Cybersecurity: Censys (Attack surface management) Blameless (SRE platform, incident response) Pixee (AI-powered application security) SpecterOps (Identity attack path management) Sublime Security (Email threat detection) Pangea (Security services platform) Prowler (Cloud security management) Push Security (Browser-based identity security) Knocknoc (Network orchestration, dynamic access control) Dropzone AI (Autonomous alert investigation) Nebulock (Agentic threat hunting) Nira (Access control for documents, acquired by Dropbox) Censys (Acquired by Elastic) Data/ML/AI Infrastructure: Abacus (End-to-end AI platform for real-time deep learning) Answer.AI (AI R&D lab with practical products) Veris.ai (Training environment for enterprise AI agents) E2B (Secure sandboxes for AI code execution) Scrunch (AI customer experience platform) Brightwave (AI investment research assistant) Strella AI (Customer research platform with AI interviews) Aomni (AI platform for B2B sales) Credo AI (Responsible AI governance) Magnify (Customer lifecycle management with AI) Fixify (AI-powered IT support) Unconv.ai (AI-optimized computing infrastructure) Pachyderm (ML data pipelines, acquired by HP Enterprise) Founders in Other Sectors: Spotnana (Travel-as-a-service platform) Mantis BioTech (Simulative AI for biomedical data) Recent Activity & Deployment Decibel has been actively deploying capital throughout 2025: Botpress raised $25M Series B (July 2025) with Decibel participation Recent investments in AI security (Nebulock, Veris.ai, Dreadnode, Scrunch) Heavy focus on autonomous AI and agentic solutions Strong engagement in developer-focused PLG and community strategies The firm demonstrates continued commitment to its focus areas with regular investment activity and portfolio support through published playbooks, founder spotlights, and educational content. Decision Process & Terms Partnership-based decision making Conviction-driven, founder-first approach Transparent communication and 24/7 founder access Hands-on operational support and strategic guidance Leverages firm's founder advisor network extensively Geographic Focus Primarily US-based with concentration in technology hubs. Portfolio spans North America with selective international investments. Competitive Advantages Technical Depth - All partners come from technical founder/operator backgrounds, not traditional VC careers Founder Network - Exceptional advisor board of successful founders across multiple exits Domain Expertise - Deep focus on three sectors with genuine operational expertise Accessibility - 24/7 founder access and hands-on support model Portfolio Synergies - Opportunities for founder learning across portfolio companies Track Record - Founded in partnership with Cisco, successfully spun out as independent firm Thesis on Modern Infrastructure Decibel believes that the next generation of valuable companies will be built on essential infrastructure software that enables engineering teams, security teams, and data teams to build and protect the digital world. The firm sees particular opportunity in: Open source and community-driven infrastructure Product-led growth for developer tools AI/ML becoming foundational to all software Shift toward autonomous and agentic solutions Security becoming a top-of-mind concern for all enterprises

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