MarTech EngineerSolutions Architect

Stack focus: sGTM, BigQuery, Conversions API, Consent Mode v2, n8n

Solutions architecture for marketing data: tracking, pipelines, and AI-assisted ops.

I help marketing and data teams ship server-side tracking, BigQuery pipelines, and privacy-safe automation with sGTM, CRM joins, and Consent Mode v2.

Server-side tracking
sGTM, GCP, BigQuery, and Conversions API
Workflow automation
n8n, Zapier, and AI agent workflows
Privacy and consent
Consent Mode v2, GDPR, and POPIA

View impact metrics

Impact

Results from live client work

Recovered conversions, faster audits, and leadership across 100+ accounts, before you read the resume.

0–0%

Conversions recovered

Lost tracking restored via server-side migrations

~0%

Faster audits

AI agent cutting audits from 3 days to 2 days

Client accounts

End-to-end analytics engagements at WebFX

Years experience

MarTech, data pipelines, and technical leadership

Case Studies

Real projects, real impact

Server-side migrations, AI audit agents, and growth measurement, written as decision records, not brochures.

Server-Side Google Tag Manager on GCPMeta Conversions APIGoogle Ads Enhanced Conversions APIGA4+1

Recovering Lost Conversions with Server-Side Tracking

15 to 30 percent of conversions recovered across mid-market e-commerce and lead-gen clients

Result

15 to 30 percent of previously lost conversions recovered, depending on client vertical and prior setup. Improved ROAS reporting accuracy and, in several cases, improved ad platform bidding.

n8nLLM APICustom promptsGA4 API+2

Cutting Analytics Audit Time from 3 Days to 2 Days with an AI Agent

33 percent faster audits while catching gaps manual review routinely missed

Result

Audit time dropped from 3 days to 2 days (33 percent faster), and the agent catches tracking gaps that manual audits routinely missed. Freed senior capacity for deeper client work.

Meta Business SuiteGoogle AdsHubSpotCustom UTM tracking+1

Growing an African Fintech's Social Audience from 45K to 100K

122 percent growth across paid, organic, and influencer channels

Result

Grew Facebook audience from approximately 45,000 to 100,000 followers (+122 percent). Contributed to measurable new-user acquisition growth. Established measurement patterns that made channel-level ROI visible for the first time.

Browse all case studies

Services

How I help marketing teams

Focused engagements: migrate measurement, automate QA, wire warehouses to CRM, and keep consent compliant.

Server-side tracking migrations

Recover lost conversions

sGTM on GCP, first-party routing, and cross-platform Conversions APIs so ad platforms see the conversions that actually happen.

Analytics audit automation

Faster, deeper QA

AI-assisted audit agents that check GA4, GTM, and platform setups and catch gaps that manual reviews miss.

Warehouse & CRM pipelines

Attribution you can trust

BigQuery ELT, offline conversion sync, and CRM-to-ad-platform joins for click-to-close visibility.

Consent & privacy engineering

Compliant measurement

Advanced Consent Mode v2, CMP integration, and first-party data strategy aligned to GDPR and POPIA.

About

MarTech Engineer & Solutions Architect

I lead end-to-end analytics engagements at WebFX, owning architecture, standards, and escalation for tracking, data pipelines, and AI-assisted ops across enterprise clients.

Fully remote from South Africa for a US agency for 4+ years: documentation-first, async by default, overlapping Cape Town mornings with US East Coast hours. Case studies and impact metrics above show the proof points.

Server-side measurement
sGTM, first-party routing, and Conversions APIs
Data pipelines
BigQuery, CRM joins, and offline conversion sync
Privacy engineering
Consent Mode v2, GDPR, and POPIA-aligned setups

Experience

Where I've worked

MarTech, digital marketing, and software development, from startup to enterprise agency.

Lead MarTech Technologist

WebFXHarrisburg, Pennsylvania, USA (Remote)

Jun 2024 - PresentCurrent

Own sGTM on GCP, Conversions APIs, and BigQuery pipelines for enterprise clients. Ship AI agents for audit and automation, run real-time tracking monitors, and act as final escalation under Consent Mode v2, GDPR, and POPIA. Mentor 4 technologists and save ~20 hours/month with an n8n prioritization agent.

MarTech Technologist

WebFXHarrisburg, Pennsylvania, USA (Remote)

Jun 2022 - Jul 2024

Integrated analytics with Salesforce and HubSpot for full-funnel click-to-close visibility. Standardized GTM data layers on high-traffic sites and replaced manual campaign reporting with automated Looker Studio dashboards.

Digital Marketing Specialist

Mama MoneySouth Africa

Feb 2021 - May 2022

Ran SEO, PPC, and paid social with custom analytics. Built email automation and segmentation to improve retention.

PHP Web Developer (Internship)

Zuri TeamNigeria

Mar 2021 - Aug 2021

Backend PHP development and third-party API integrations.

Web Designer & Developer

LomeditechiesSouth Africa

Nov 2018 - Oct 2021

Built responsive sites focused on performance, clean structure, and technical SEO.

Social Media Coordinator

Mama MoneySouth Africa

Mar 2019 - Feb 2021

Designed and iterated social campaigns across major platforms using performance data.

Expertise

Full-stack MarTech capability

Tracking, data pipelines, automation, and privacy skills organized by how engagements actually run.

How engagements run

01
Discover & Plan
Requirements gathering and solution architecture
02
Build & Integrate
Server-side tracking, APIs, and automation workflows
03
Secure & Comply
Privacy controls, consent configuration, data governance
04
Monitor & Optimize
Real-time dashboards, alerting, and continuous improvement

Capabilities

Server-Side & Cloud Analytics

10 skills

Server-Side GTM (sGTM)
Google Cloud Platform
BigQuery
Conversions API (Meta, Google, multi-platform)
Enhanced Conversions
GA4
Google Tag Manager & data layer frameworks
Custom eCommerce tracking
Cross-domain & multi-domain tracking
App Analytics, Mobile Measurement Partners

Data & Cloud

3 skills

BigQuery, SQL, ELT pipelines
Identity matching & attribution
Looker Studio dashboards

Automation & AI

5 skills

n8n & Zapier Workflow Automation
AI agent workflows & LLM-powered automation
REST APIs & custom webhooks
Offline conversion sync
Automated monitoring & alerting systems

Privacy Engineering

5 skills

Advanced Consent Mode v2
GDPR & POPIA Compliance
Consent management platforms
First-party cookie preservation & data strategy
Custom JavaScript event listeners

Digital Marketing Foundations

3 skills

SEO, PPC & paid social
Technical SEO
Email automation & list segmentation

Programming

5 skills

JavaScript
Python
SQL
PHP
HTML/CSS

Platforms

6 skills

Salesforce
HubSpot
Marketo
WordPress
GitHub
Facebook Business Manager

Consulting & Leadership

6 skills

Technical discovery & audits
Requirements gathering & documentation
Stakeholder communication
Mentoring & technical standards ownership
Cross-functional training & enablement
Documentation systems

Projects

Enterprise, freelance, and personal builds

Enterprise builds, freelance sites, and personal products that complement the case studies above.

CRMAnalyticsBigQuerySalesforceHubSpot

Enterprise CRM-Analytics Integration

Unified Salesforce, HubSpot, and marketing platforms with BigQuery pipelines for offline conversion attribution.

Salesforce + HubSpot → BigQuery offline conversions

Click-to-close attribution

MonitoringAutomationAlertingQuality Assurance

Real-Time Monitoring System

Continuous audits of client tracking setups with instant alerts when event volume drops or tracking breaks.

Continuous audits + alerts on data drops / broken events

Prevents silent data loss

TrainingDocumentationLeadership

Team Training & Documentation

Workshops and internal docs on server-side tracking, automation, and compliance for WebFX marketing teams.

Mentor 4 technologists

Internal MarTech docs + newsletter

Web DevelopmentCAPICRMAI Marketing

Ydigital Agency

Revenue marketing partner site covering web, CAPI, CRM integrations, analytics, and AI-powered solutions.

Full-service platform

Multi-region client base

Credentials

Certifications & education

Google, HubSpot, and Meta credentials plus a CS degree, the foundation under the implementation work.

Certifications

Google Analytics Individual Qualification (GAIQ)

1/6

Education

Bachelor of Science (BS), Computer Science

University of the People

October 2019 - March 2024

Associate's Degree, Computer Science

University of the People

October 2019 - June 2021

Contact

Open to engagements

Let's work together

Tracking migrations, data pipelines, or architecture reviews. Send a short note and I'll reply within 1–2 business days.

Prefer email?felixkayz001@gmail.com

Or find me on

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