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 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 appsContribute mobile code for event tracking, identity handling, consent, and deep linkingDefine and validate SDK initialization, event sequencing, and login/logout behaviorInvestigate missing or duplicate events, incorrect parameters, SDK conflicts, and differences across platforms or app versionsPartner 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/AdAttributionKitImplement and test deep links and deferred deep links for acquisition and lifecycle campaignsBuild and maintain advertising integrations, including conversion APIs, enhanced conversions, affiliate postbacks, and conversion creditingPartner with Data Engineering to deliver conversion events, audiences, and suppressions through reverse ETLInvestigate 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 destinationsEnsure anonymous and authenticated activity connects correctly across app SDKs and downstream platformsWork with first-party customer IDs, device and advertising IDs, click IDs, and hashed PIIEnsure tracking and data delivery respect customer consentMaintain 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 releasesAutomate 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 measurementStrong 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 SDKsExperience with app lifecycle behavior, SDK initialization, identity changes, deep linking, and debugging on physical devicesExperience delivering marketing integrations from app instrumentation through attribution and downstream deliveryExperience with a mobile measurement partner such as Adjust, event-routing platforms such as RudderStack or Segment, and activation platforms such as HightouchStrong understanding of SKAdNetwork/AdAttributionKit, ATT, advertising identifiers, and consent requirementsAbility to use device logs, network inspection, API diagnostics, and SQL to investigate events and reconcile data across systemsExperience implementing tests, monitoring, or alerts for instrumentation and integrationsClear 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 AndroidExperience with lifecycle messaging platforms, push notifications, and in-app messagingFamiliarity with mobile release processes and automated app testingWarehouse or lakehouse experience, including dbt or Delta LakeExperience with feature flags and remote configurationFamiliarity with predictive marketing signals such as pLTVExperience in a regulated environment such as financial services Core Values & Attributes Hunger to deliver game-changing productsExceptional drive and precision in deliveryA belief that your work is tied to your life's missionOptimistic about the potential of societal change You are not expected to have experience with all listed requirements. If you feel passionate about Acorns' mission, vision, and values, please apply. What We Offer Competitive salary and stock optionsA comprehensive benefits package for you and your familyFlexible work location, hours, and paid time off401(k) matchingMonthly Acorns account contribution & GoHenry account for your familyMindfulness and Financial Wellness resources, Headspace and Addition WealthAcorns Career Development Program (Ongoing training sessions, development plans, development check-ins, Cornerstone’s online training platform)Roots Leadership Program for Emerging LeadersCommunity week onsite gatherings and various virtual eventsTalented 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 will be provided if an employee receives an offer of employment. If hired, employee will be in an “at-will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors. Work Authorization Acorns participates in E-Verify to confirm the employment eligibility of all newly hired employees. For more information about E-Verify, please visit www.e-verify.gov.