Senior AdTech Analytics Engineer (Measurement & Signals)

Remote · Lithuania · Armenia · Estonia · Latvia · Hungary · Bulgaria · 4+ years experience · Contract · Remote · Posted Oct 7, 2026

At a glance

Experience: 4+ years experience
Employment: Contract
Workplace: Remote
Location: Remote · Lithuania · Armenia · Estonia · Latvia · Hungary · Bulgaria

Welltech is seeking a Senior AdTech Analytics Engineer (Measurement & Signals) to own how conversion events reach every ad network and ensure signal quality acts as a performance lever.
The role sits at the intersection of performance marketing, tracking implementation, and privacy, partnering with Marketing, Product, Data Engineering, and ad network representatives.

Partner with ad platform representatives to improve conversion signals, assess platform changes, investigate signal-related performance issues, and design measurement approaches for signal/tracking experiments.
Design and maintain conversion pipelines for ad networks with support from the Data Engineering team to ensure timely, deduplicated, and high-quality signal delivery.
Set up and launch integrations with new ad platforms, covering conversion signal delivery and reporting data feeds for Marketing.
Manage GTM releases across multiple web properties and design event architecture for data layers.
Monitor Meta EMQ, pixel and CAPI diagnostics, deduplication, Google Ads conversion diagnostics, Enhanced Conversions, click ID capture, and offline conversion uploads.
Build monitoring and alerts for errors, latency, coverage, and discrepancies.
Maintain UTM parameters and campaign naming conventions and ensure correct attribution.
Build ad-hoc and monitoring reports for conversion values, bidding performance, signal delivery, and funnel metrics while defining Signal Engineering metrics.
Build and maintain custom marketing performance datasets.

4+ years of experience in ad tech, martech, digital measurement or marketing technology.
Hands-on with Google Tag Manager, both client-side and server-side.
Experience with conversion APIs such as Meta CAPI, Google's equivalent, or similar, and server-side event delivery.
Strong understanding of browser-side and server-side tracking, and what breaks in each.
Hands-on knowledge of at least one ad platform, including campaign types, bidding strategies and conversion setup.
Comfortable working operationally with data and SQL to query it, diagnose issues, and verify signal quality without depending on an analyst.
Experience partnering with performance marketing/user acquisition stakeholders and ability to explain complex measurement concepts to performance marketers in plain language.
English at B2 or above, written and spoken.

Experience with value-based bidding, predicted LTV, or conversion value optimisation, especially for subscription products.
Understanding of privacy, consent management and GDPR-compliant tracking.
Familiarity with incrementality and holdout testing (Meta or Google Conversion Lift, geo-experiments) to validate whether signal changes actually moved performance.
Background in high-growth consumer subscription, e-commerce, marketplaces or gaming.
Experience with Google Tag Gateway or first-party serving setups.
Experience with first-party data activation or CDPs.