Lead Web Experimentation & Tracking Engineer

almapay.com; Paris; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Health insurance: 100% covered by Alma

Meal vouchers

Paid time off: 25 days/year

Remote work: up to 2 weeks full remote

Job summary

Alma, based in Paris, is seeking an Experimentation & Tracking Engineer to own web experimentation across our site and markets. You will design tests from opportunity to readout, implement variations, and ensure data quality with Kameleoon and GTM/GA4, presenting first results with the Account Manager and Business Analysts.

You will define tracking plans for 8 markets, manage consent/GDPR, and scale the practice by turning the framework into repeatable playbooks, driving CRO and performance

Qualifications

• 3 to 5 years of experience in experimentation, web analytics, CRO, or measurement-oriented web development.
• Hands-on experience with GTM and GA4, including consent mode, data quality, and debugging issues.
• Self-sufficient in JavaScript and HTML/CSS, including DOM manipulation and variation building.
• Understand test validity, sample size, stopping rules, and trustworthy experiment results.
• Proficient in English and French for client-facing and internal collaboration.

Responsibilities

• Lead merchant experimentation from opportunity to readout.
• Design tests with merchants: scenario, traffic split, pages, events, KPIs, duration, stopping rule.
• Implement variations and event tracking in Kameleoon; run live phase and present results with stakeholders.
• Define and maintain the tracking plan across 8 markets via GTM/GA4 or equivalent tools.
• Ensure data flows into Salesforce, BigQuery, and Looker; manage consent, GDPR compliance, deduplication, attribution, and reconciliation across sources.
• Build and evolve almapay.com landing pages and product pages; run a CRO program for the demo request; maintain Core Web Vitals and hreflang across markets.
• Scale the experimentation practice by turning framework/documentation into repeatable playbooks; target 8 merchant tests live this year.
• Share learnings with Growth, Revenue Operations, Data, Marketing, Sales, and Product stakeholders.

Skills

Experimentation

Web analytics

CRO

JavaScript

HTML/CSS

French & English communication

Tools

Kameleoon

GTM

GA4

Salesforce

BigQuery

Looker

Looker Studio

n8n

Notion

Slack

GitHub

Axeptio

Rudderstack

Vercel

Metabase

Cloudflare

Job description

Alma, based in Paris, is seeking an Experimentation & Tracking Engineer to own web experimentation across our site and markets. You will design tests from opportunity to readout, implement variations, and ensure data quality with Kameleoon and GTM/GA4, presenting first results with the Account Manager and Business Analysts.

You will define tracking plans for 8 markets, manage consent/GDPR, and scale the practice by turning the framework into repeatable playbooks, driving CRO and performance