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What Clients Say About Working With Us

Real feedback from companies that have trusted WithSeismic with their engineering challenges. From Chrome extensions serving 30,000+ users to LLM platforms processing thousands of hours of content.

5.0 Average Rating

Based on 15+ client reviews across multiple platforms

56+ Projects Delivered

From MVPs to production systems driving real revenue

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Contra - Chrome Extension & Marketplace Growth

Indy.ai Chrome Extension for Contra
“Doug was incredible to work with and a great communicator. He operated quickly & efficiently, and even proposed ways to improve the feature to exceed our expectations. 10/10!” — Allison Nulty, Head of Product @ Contra
Project: Indy.ai Chrome Extension - AI-powered job discovery tool Results:
  • 30,000+ active users using the extension daily
  • 2x marketplace inventory growth through crowdsourced job discovery
  • 4.6/5 rating on Chrome Web Store
  • Built frictionless onboarding with zero-setup authentication
  • Background workers that never disrupt browsing experience
Technologies: Chrome Extension (Plasmo), React, TypeScript, LLM integration, Service Workers

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The Motley Fool - Marketing & Technology Solutions

“Doug is a pro. I’d hire him again for any future marketing & technology initiatives.” — Brian Tighe, Head of Technology @ The Motley Fool
Context: Engineering solutions for one of the world’s most recognized financial media companies, serving millions of investors globally. Impact: Delivered production-ready tools that integrated seamlessly with existing technology infrastructure while maintaining high performance standards.

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Snacker.ai - AI Video Editing Platform

“They’re smart, fast, and trustworthy!” — Shelby Stevens, Founder @ Snacker.ai
Project: LLM-Powered Video Platform - AI video editor competing with Riverside and Descript Results:
  • Took broken Lovable prototype to production in 6 weeks
  • 5,000+ users creating AI-edited videos
  • 20-second video editing turnaround time
  • Revenue-generating platform from day one
  • Built custom HLS playlists to solve iOS Safari audio blocking
Technologies: TypeScript monorepo, Hono backend, Supabase, WebCodecs API, LLM integration

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Interactive Testimonials Widget

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Results By The Numbers

Our clients don’t just say nice things - they see measurable business impact:

Revenue Growth

60% of revenue driven by Vouchernaut automation (contributed to $65M acquisition)

User Scale

30,000+ active users for Contra’s Chrome extension

Speed to Market

6 weeks from broken prototype to revenue-generating platform (Snacker.ai)

Time Savings

95% reduction in research time (Fingers on Pulse)

Marketplace Growth

2x inventory increase for Contra’s freelancer marketplace

Quality Rating

100% accuracy on analytics auditing (GrowthRunner DevTools)

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More Client Feedback

Project: Vouchernaut Programmatic PPCBuilt automation that drove 60% of company revenue and contributed to Groupon’s $65M acquisition of VoucherCloud.Key Achievements:
  • Campaigns launch in 10 seconds (vs. hours manually)
  • Self-optimizing performance
  • 10x scale without additional headcount
  • Autonomous marketplace management
Technologies: Playwright automation, PPC campaign management, programmatic bidding
Project: GrowthRunner DevToolsChrome extension that reduced analytics auditing time by 90% while achieving 100% accuracy.Client Impact:
  • Audits completed in minutes instead of hours
  • Zero errors reaching clients
  • Faster team learning through automated feedback
  • Premium pricing justified by quality assurance
Technologies: Chrome Extension, Analytics debugging, Real-time monitoring
Project: Automated Lead QualifierReal-time engagement tracking and prospect scoring system.Results:
  • 3x more qualified meetings booked
  • 70% reduction in prospecting time
  • Automatic lead scoring and prioritization
  • 24/7 lead processing
Technologies: Browser automation, CRM integration, Real-time scoring
Project: Fingers on PulseLLM workflows that watch and understand 800+ YouTube channels simultaneously.Impact:
  • Process months of content in minutes
  • 95% reduction in research time
  • Human-level comprehension at machine speed
  • 10,000+ files processed per hour
Technologies: LLM workflows, Content analysis, Document processing pipelines

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Trusted By Leading Brands

We’ve delivered engineering solutions for companies across multiple industries:

Contra

Groupon

The Motley Fool

Sky

NOWTV

TOPMAN

MIT

Very

Snacker.ai

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What Makes Our Clients Successful?

Every client testimonial above represents a real engineering partnership where we focused on business outcomes, not just technical deliverables.
Common Themes Across Success Stories:
  1. Fast Communication & Iteration - Allison @ Contra highlighted our speed and efficiency. We work in rapid cycles with daily updates.
  2. Exceeding Expectations - We don’t just build what’s requested - we propose improvements and optimizations that deliver better outcomes.
  3. Production-Ready Code - From 30,000-user Chrome extensions to revenue-driving platforms, everything we ship is built for scale.
  4. Domain Expertise - Whether it’s browser automation, LLM workflows, or Chrome extensions, we bring specialized knowledge to every project.
  5. Business Impact Focus - We measure success by business metrics: user growth, revenue impact, time saved, costs reduced.

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Why Clients Choose WithSeismic

Real Production Experience

15+ years shipping code that runs in production. From Chrome extensions with 30,000+ users to systems driving 60% of company revenue.

Senior-Level Engineering

No juniors, no outsourcing. Doug Silkstone personally leads all development with 15+ years of experience.

Fast Shipping Velocity

Most projects delivered in 2-6 weeks. Broken prototypes to production in 6 weeks. First automation tool in 2 weeks.

Business-First Mindset

We figure out what needs to be built to solve your business problem, not just what you ask for.

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Common Client Outcomes

Based on 56+ projects delivered, here’s what clients typically experience:

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Ready to Join These Success Stories?

Limited Availability: We work on a limited number of projects at a time to ensure quality. Current availability for new projects starting in 2-3 weeks.

See More Case Studies

Explore detailed breakdowns of Chrome extensions, MVPs, LLM workflows, and browser automation projects.

Book a Discovery Call

30-minute consultation to discuss your project and see if we’re the right fit. No pressure, no sales pitch.

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Frequently Asked Questions

Best fit for SaaS companies and marketplaces doing 300K−300K-5M ARR with revenue problems that require custom engineering. If you have manual work holding you back from scaling, we can help.Book a discovery call to discuss your specific situation.
Most projects deliver initial results in 2-6 weeks:
  • 2-week Sprint: One major automation tool
  • 4-week System: Multiple connected tools
  • 6-week MVP: Full platform from prototype to production
Contra’s extension took 8 weeks. Snacker.ai went from broken prototype to revenue in 6 weeks.
Yes. We deliver production-ready systems with documentation and can provide ongoing maintenance if needed. Most tools are built to run autonomously.Many clients continue month-to-month for continuous optimization and new features (like our Contra partnership).
Every project starts unique. These case studies show our approach: understand the business problem, build the right solution, deliver measurable results.Whether it’s Chrome extensions, LLM workflows, browser automation, or custom tools - we adapt to your needs.
If you’ve worked with us, we’d love your feedback:
  • Email your testimonial to hello@withseismic.com
  • Include your name, title, company, and project details
  • Optional: Include specific metrics or outcomes
We feature the best client testimonials on this page and in our marketing materials (with your permission).
Looking for specific examples? Check out our Case Studies for detailed technical breakdowns, or contact us to discuss your project.
WithSeismic - Trusted by leading brands to deliver production-ready engineering solutions that drive real business results.