InvoiceAndCollect
A beta suite of cost-effective Google Sheets add-ons that helps vertical-specific businesses invoice, collect, and reconcile bills — and make accounting cleaner.
Founder-led growth systems
Scaling revenue through systems, operations, and practical AI.
Built from real startup operating experience across SaaS, cybersecurity, workflow tooling, revenue operations, and AI-enabled operational systems.
Mark Shalinsky, PhDExperienced enough to help grow your idea.
What this is
Workflow infrastructure for growth-focused operators.
Data Sales Science combines operating experience, product-building discipline, and practical AI-driven tools where they actually create leverage.
LitigationConnection
A done-for-you appointment-setting service and AI-enabled attorney intelligence platform with 200k+ attorneys segmented by geography, practice, and seniority.
WolverineWOD
All-in-one gym management platform for CrossFit affiliates — scheduling, WOD programming, live leaderboards, personal training, and memberships. $100/month flat.
Calendar Scheduler
Generate personalized availability emails from your real calendar in seconds. Paste your ICS URL, pick your days, and send — no Calendly links needed.
AI
Advisory Services
Helping startups and PE-backed companies build revenue with experience, operating discipline, and AI-driven tools.
Built and scaled
Startup operating experience, not theory.
Hands-on operating experience across startup sales, sales operations, revenue operations, workflow automation, and scalable operational systems.
Operator story
Not the founder with the original idea. The operator who helps great ideas scale.
Mark has built sales, sales operations, revenue systems, and workflow infrastructure inside companies that needed to grow. That experience now powers Data Sales Science products, labs, and advisory work.
Read founder story
Workflow Labs
AI systems that solve operational bottlenecks, not demos that look good in a meeting.
Recent systems include AI-generated email follow-up workflows, attorney matching criteria, cold-call and email scripts, and PACER / CourtListener parsing to identify plaintiff and defense attorneys.
Explore Workflow Labs
Featured expert
Podcasts, webinars, guest writing, and expert mentions.
External appearances and writing help make the operator story visible: data-driven cold calling, sales process, cybersecurity lead generation, and revenue systems.
Podcast
Decision Point Podcast — Data Driven Cold Calling
MonsterConnect interview on data-driven cold calling with Mark Shalinsky, PhD.
Open →Podcast
The Talent, Sales & Scale Podcast
Spotify appearance: Mark Shalinsky / Data Sales Science.
Open →Podcast Archive
Salesborgs Podcast Archive
Salesborgs podcast archive and related sales / AI conversations.
Open →Expert Feature
6sense — Sales Experts to Follow
Featured among sales experts to follow.
Open →From the blog
Operator writing, restored.
Writing, media, and field notes connect the operating philosophy to practical sales and workflow systems.
Objection Handling
Being able to properly handle objections can make or break a sale. Depending on where in the sales cycle the objection is brought up will determine the method of handling. Typically objections are...
Read post →How Fast Are You Closing Deals?
It’s a time honored mantra of sales leaders, “time kills deals”. From this, funnel velocity is arguably one of the most important metrics you can measure your sales staff on. The question remains,...
Read post →What's A Title Worth To You?
We collect business cards. We keep the business titles in our CRMs. We know the business titles can derive value. The question persists, how do we monetize business titles? To me, there are 3 key...
Read post →Three Pillars of Lead Generation
Opportunities beget deals. Deals beget revenue. No leads, no deals, no revenue, no company. So guess what, lead generation is key. At Message Blocks we have a great event planning, management, and...
Read post →