Sr. Martech Engineer, Mobile

At Acorns, our mission is to look after the financial best interests of the up-and-coming, beginning with the empowering, proud step of micro-investing. How do we accomplish our mission? Our values.

Lead With Heart - With compassion, integrity, and tenacity, inspire yourself and others to move past all previous thresholds of possibility

Make Bold Decisions - We are creating a new world. Be optimistic, adventurous, and courageous. Leap fearlessly into the future

Always Build Trust - Say what you mean, mean what you say, and do what you say you’re going to do. We are all owners. We are one team

Never Stop Growing - Change IS the constant. Stay hungry and curious. Be relentless in the pursuit of progress

Find a way - Never settle, no excuses, nothing is impossible. Just make it happen

Be the owner - Drive with intensity and take total responsibility for the outcome. It's on you.

Our values guide us, and our mission drives us. Come join us and help deliver financial wellness for the whole family, putting the tools of wealth‑making into everyone’s hands.

Senior Martech Engineer, Mobile | Acorns

Acorns is seeking a Senior Martech Engineer, Mobile to own the technical reliability of marketing instrumentation and integrations, with a strong focus on our iOS and Android apps. You will implement and debug mobile SDKs, build marketing integrations, and validate that critical events reach their intended destinations with the correct data while working across Mobile Engineering, Data Engineering, and Marketing to deliver changes end to end.

Acorns is a remote‑first organization, offering the flexibility to work remotely while providing optional access to office space in Irvine, CA.

What you will do at Acorns:

Mobile SDKs and Instrumentation

• Implement, maintain, and debug attribution, analytics, and engagement SDK integrations in our iOS and Android apps

• Contribute mobile code for event tracking, identity handling, consent, and deep linking

• Define and validate SDK initialization, event sequencing, and login/logout behavior

• Investigate missing or duplicate events, incorrect parameters, SDK conflicts, and differences across platforms or app versions

• Partner with Core Client engineers on code reviews, SDK upgrades, release testing, and production fixes

Attribution and Marketing Integrations

• Configure and maintain mobile and web attribution, including attribution windows, reattribution, deduplication, fraud filtering, and SKAdNetwork/AdAttributionKit

• Implement and test deep links and deferred deep links for acquisition and lifecycle campaigns

• Build and maintain advertising integrations, including conversion APIs, enhanced conversions, affiliate postbacks, and conversion crediting

• Partner with Data Engineering to deliver conversion events, audiences, and suppressions through reverse ETL

• Investigate differences between internal conversion data, our attribution provider, and ad platforms, and resolve the underlying issues

Event Definitions and Identity

• Maintain documented definitions for marketing events, including required parameters, identifiers, owners, and destinations

• Ensure anonymous and authenticated activity connects correctly across app SDKs and downstream platforms

• Work with first‑party customer IDs, device and advertising IDs, click IDs, and hashed PII

• Ensure tracking and data delivery respect customer consent

• Maintain consistent event and identity definitions for marketing use cases across mobile, web, and backend systems

Platform Configuration and Integration Support

• Own and maintain integrations across our apps, marketing tools, data platform, and ad platforms, with documented data flows and ownership.

• Support Lifecycle Marketing with event triggers, personalization, audience delivery, push notifications, and deep links.

• Partner with platform owners and vendors on technical configuration, administration, and troubleshooting.

Validation and Monitoring

• Validate event payloads and downstream delivery for critical marketing flows before app releases

• Automate testing and monitor critical marketing flows for event and delivery issues.

• Trace events from the app through attribution and ad platforms to diagnose and resolve failures.

• Scope and deliver instrumentation and integration changes with Marketing, Mobile, and Data Engineering

What you will bring to Acorns:

• 5+ years of software engineering experience, including hands‑on mobile development and experience in Martech, adtech, growth engineering, or mobile measurement

• Strong production development experience in Swift/iOS, Kotlin/Android, and Flutter, with working familiarity with the other platform.

• Hands‑on experience implementing and maintaining mobile attribution, analytics, or engagement SDKs

• Experience with app lifecycle behavior, SDK initialization, identity changes, deep linking, and debugging on physical devices

• Experience delivering marketing integrations from app instrumentation through attribution and downstream delivery

• Experience with a mobile measurement partner such as Adjust, event‑routing platforms such as RudderStack or Segment, and activation platforms such as Hightouch

• Strong understanding of SKAdNetwork/AdAttributionKit, ATT, advertising identifiers, and consent requirements

• Ability to use device logs, network inspection, API diagnostics, and SQL to investigate events and reconcile data across systems

• Experience implementing tests, monitoring, or alerts for instrumentation and integrations

• Clear documentation and communication skills, with the ability to scope ambiguous problems and drive them to completion across teams

Nice to Have

• Production mobile development experience on both iOS and Android

• Experience with lifecycle messaging platforms, push notifications, and in‑app messaging

• Familiarity with mobile release processes and automated app testing

• Warehouse or lakehouse experience, including dbt or Delta Lake

• Experience with feature flags and remote configuration

• Familiarity with predictive marketing signals such as pLTV

• Experience in a regulated environment such as financial services

Core Values & Attributes

• Hunger to deliver game‑changing products

• Exceptional drive and precision in delivery

• A belief that your work is tied to your life's mission

• Optimistic about the potential of societal change

You are not expected to have experience with all listed requirements.

What we offer:

• Competitive salary and stock options

• A comprehensive benefits package for you and your family

• Flexible work location, hours, and paid time off

• 401(k) matching

• Monthly Acorns account contribution & GoHenry account for your family

• Mindfulness and Financial Wellness resources, Headspace and Addition Wealth

• Acorns Career Development Program (Ongoing training sessions, development plans, development check-ins, Cornerstone’s online training platform)

• Roots Leadership Program for Emerging Leaders

• Community week onsite gatherings and various virtual events

• Talented and motivated team members who care deeply about one another, our mission, and our customers.

• The rare opportunity to create a new world. We inspire one another every day to do meaningful work that solves big societal challenges.

About Acorns:

Acorns is the financial wellness company helping everyday Americans grow their money for the long term. Since 2014, Acorns has grown into a global company with multiple life stage products serving the needs of kids, teens, adults and parents. Named one of America's Best Financial Services of 2026 by TIME, Acorns has served over 16 million people, and helped customers save & invest over $33 billion dollars, much of it from spare change and small amounts.

Compensation Information:

The pay range for this position at commencement of employment is expected to be between $188,200-$221,400/year; however, base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. The total compensation package for this position may also include other elements, including equity grants and discretionary cash bonus awards in addition to a full range of medical, financial, and/or other benefits (including 401(k) eligibility and various paid time off benefits, such as vacation, sick time, and parental leave), dependent on the position offered. Details of participation in these benefit plans