CRM Technology

Do more with a CRM tech stack that costs less

Outsource software selection and vendor relationships to a MarTech expert.

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CRM Vendor Selection

With 14,000+ MarTech tools out there, picking the right one can be overwhelming. I help you build the optimal stack—through a structured RFP or a simple, budget-based approach that fits your needs.

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CRM Tech Stack Optimization

Vendor changes are never simple, but always happen for a reason. I've migrated stacks to Salesforce, Airship, Optimove, CrossEngage, and more. Using AI agents, no-code tools, and classic SaaS, I reduce your tech stack costs without compromising on quality or functionality.

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Multi-channel CRM Automations

You don't need a fancy tech stack to run complex cross-channel journeys or A/B tests. With smart data use, real-time decisioning, and strong segmentation, your existing setup can go much further than you think.

Not sure where to start?

Let me assess your CRM maturity with a tailored health check — for free.

Success Cases

Rethinking the CRM Tech Stack for Global Customer Engagement

DAZN, global sports streaming app, subscription business
The company relies on a centralized MarTech stack to power all customer communications — from one-off campaigns to complex, cross-channel lifecycle journeys.
Challenge: Back then, the existing CRM setup lacked support for key use cases like real-time engagement and payment failure recovery. It came with a price tag that no longer matched its value. The goal was to introduce new revenue-driving use cases while reducing the total costs.
Approach: We evaluated multiple tech stack options based on current and future use cases, revenue impact, and operational needs. Led an RFP process using structured scoring (functionality, scalability, price), selected the best-fit vendors, negotiated pricing, and ran the migration.
Outcome: Enabled real-time data decisioning and advanced segmentation across 70+ behavioral and transactional data points — unlocking more value and speed from CRM operations. Reduced annual costs by 11% through migration and supplier renegotiation.
Rethinking the CRM Tech Stack for Global Customer Engagement case study

Lead Generation & Nurturing for Car Buyers

Volkswagen China, car manufacturer
Volkswagen in China engaged prospects through a wide range of digital and offline touchpoints — brand campaigns, mobile games, websites, social media, and events — all aimed at influencing purchase decisions.
Challenge: How do we qualify, nurture, and convert leads across this journey to ultimately drive car purchases at scale?
Approach: We designed and built interfaces and automations to collect and enrich customer zero- and first-party data across VW's ecosystem. Leads were qualified and nurtured through tailored marketing comms and automatically routed to relevant business units. This included pioneering the integration with Volkswagen's global CRM database.
Outcome: Achieved a 1% conversion to car purchase — a strong benchmark for the market. The success of this initiative led the agency to win Audi as a client for similar CRM work.
Lead Generation & Nurturing for Car Buyers case study

Building a WhatsApp-First Tech Stack for a Utility Startup

Electricity broker, undisclosed company
The startup launched a 100% WhatsApp-based utility broker helping individuals save on electricity bills.
Challenge:
The goal was to deliver AI-powered onboarding, real-time service updates, 1:1 conversations, and upselling entirely within WhatsApp. How can we build a lightweight, cost-efficient tech stack that supports all these customer interactions within a single messaging channel?
Approach: In a vendor evaluation process, I reviewed 21 providers across 4 categories. Each was scored across 8 criteria, including functionality, scalability, and integration options.
Outcome: Chose a single tool that supported all core use cases and doubled customer onboarding speed.
Building a WhatsApp-First Tech Stack for a Utility Startup case study

Tools & technologies I work with

SFMC logo
Braze logo
Airship logo
Optimove logo
Bloomreach logo
Segment logo
Spotler logo
Mailjet logo
SendGrid logo
Mailchimp logo
AWS logo
Klaviyo logo
Emarsys logo
GetResponse logo
Validity logo
Infobip logo
Armin logo
Google Firebase logo
Kochava logo
Respond.io logo
Google Play Console logo
App Store Connect logo
TestFlight logo
Optimizely logo
VWO logo
Movable Ink logo
Facebook logo
WhatsApp logo
Google Ads logo
Google Analytics logo
Hotjar logo
Mixpanel logo
Power BI logo
Tableau logo
Looker logo
MicroStrategy logo
Chattermill logo
Zapier logo
Supabase logo
Airtable logo
Cursor logo
Figma logo
Miro logo
Notion logo
ChatGPT logo
Claude logo
Shopify logo
Squarespace logo

Let's talk about your growth & retention goals

Schedule a free 30-minute call to discuss your current setup and challenges.

Get in touch

Let's get started.Feel free to reach the way it works best for you.
Connect on LinkedInFollow on Substackhi@romensky.digitalBerlin, Germany 🇩🇪