Principal Software Engineer, Customer Messaging Platform

FIS; Jacksonville (FL); On-site; USD 140,000 - 210,000; Full time

Job summary

FIS is seeking a Principal Engineer to shape the messaging platform used across email, push, and SMS. You will define architecture, governance, and delivery strategies to ensure compliant, reliable communications for financial services brands.

You will lead technical direction, collaborate with product and design, and partner with security and platform teams to enable multi-brand messaging at scale.

Qualifications

• Experience architecting production-grade messaging platforms at scale.
• Hands-on with email delivery, push (APNs/FCM) and SMS.
• Knowledge of SPF/DKIM/DMARC and SMS compliance, including 10DLC.
• Ability to translate business needs into technical direction.
• Strong backend/frontend skills, including TypeScript and API design.
• Proven technical leadership across architecture and cross-team delivery.
• Experience with AI coding tools and their impact on engineering.
• Degree in CS/Engineering or equivalent practical experience.

Responsibilities

• Define the architecture and technical strategy for customer messaging across channels.
• Build shared services for templating, theming, personalization and orchestration.
• Own deliverability and reliability: email authentication, push delivery, SMS compliance.
• Lead decisions on messaging vendors and infrastructure tradeoffs.
• Build consent and opt-out management meeting regulatory requirements.
• Make delivery and engagement metrics visible to stakeholders.
• Partner with business, product and security teams to align platform capabilities.
• Enable AI-assisted workflows to compose and send messages safely.

Skills

Messaging architecture

Architecting at scale

Email delivery

Push notifications

SMS delivery

TypeScript

API design

Technical leadership

AI tooling

Education

Bachelor's degree in CS/Engineering or equivalent

Tools

APNs

FCM

Twilio

SendGrid

Braze

Job description

Position Type :

Full time

Type Of Hire :

Experienced (relevant combo of work and education)

Job Description

At FIS, our technology and our people are moving forward. We advance the way the world pays, banks and invests. We believe in building inclusive, diverse teams. Together, we innovate to help our colleagues, clients and communities succeed. If you're ready to grow your career and make an impact in fintech, we have one question: Are you FIS?

About the Role

You will shape the platform FIS teams use to reach customers through email, push notifications and SMS. You will define how messages are composed, branded, delivered, measured and governed across many financial institutions, and make it easy for teams across FIS to send consistent, compliant and timely communications without building it themselves. As a principal engineer, you will set technical direction for customer messaging, make the build, buy or adopt calls, and connect business stakeholders with engineering. Success means messages reach customers reliably, look right for every brand, and meet regulatory requirements by default.

What You Will Be Doing

• Define the architecture and technical strategy for customer messaging across email, push notifications and SMS.
• Build shared services for message templating, multi-brand theming, personalization and orchestration across channels.
• Own deliverability and reliability: email authentication, push delivery through Apple and Google, SMS carrier compliance, retries and failover.
• Lead decisions on messaging vendors and infrastructure, including build, buy or adopt tradeoffs.
• Build preference, consent and opt-out management that meets regulatory requirements for financial services.
• Make delivery, engagement and failure metrics visible to teams and stakeholders.
• Serve as the primary technical partner for business and product stakeholders who depend on customer messaging.
• Translate business, product and compliance needs into platform capabilities, roadmaps and clear tradeoffs.
• Enable AI agents and AI-assisted workflows to compose, personalize and send messages safely.
• Partner with design, web, mobile, security and platform teams to deliver consistent customer experiences.
• Shape the content platform that supplies copy and assets to messaging, web and mobile channels.
• Coach engineers and technical leads while strengthening engineering practices.

What You Will Need

• Extensive experience architecting and delivering production-grade messaging or notification platforms at scale.
• Hands-on experience with email delivery, push notifications (APNs, FCM) and SMS.
• Knowledge of email deliverability and authentication (SPF, DKIM, DMARC) and SMS compliance (for example, 10DLC and short codes).
• Proven ability to work with business stakeholders and translate their needs into technical direction.
• Strong experience with modern backend and frontend engineering, including TypeScript and API design.
• Proven technical leadership across architecture, standards and cross-team delivery.
• Hands-on experience with AI coding tools and a point of view on how they change engineering work.
• Degree in computer science, engineering or a related field, or equivalent practical experience.

Added Bonus If You Have

• Experience in banking, payments or financial services.
• Experience with messaging providers or customer engagement platforms, such as Twilio, SendGrid, Braze or similar.
• Hands-on experience spinning up an APNs system from scratch.
• Knowledge of communication regulations and consent management in financial services (for example, TCPA and CAN-SPAM).
• Experience building multi-tenant or white-label messaging for many brands.
• Experience with headless content management systems and content modeling.
• Experience with Model Context Protocol (MCP) or exposing platform capabilities to AI agents.
• Familiarity with secure software development practices for regulated financial environments.

What We Offer You

At FIS, you can grow your career as far as you want to take it. Here's what else we offer:

• Opportunities to make an impact in fintech
• Personal and professional learning
• Inclusive, diverse work environment
• Resources to give back to your community
• Competitive salary and benefits

Privacy Statement

FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here

For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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