Principal Software Engineer, Customer Messaging Platform

FIS Global•Jacksonville, FL

About The Position

The Principal Software Engineer will shape the customer messaging platform FIS teams use to reach customers through email, push notifications, and SMS. The role defines how messages are composed, branded, delivered, measured, and governed across financial institutions, enabling teams across FIS to send consistent, compliant, and timely communications. The Principal Engineer sets technical direction for customer messaging, makes build, buy, or adopt decisions, and connects business stakeholders with engineering. Success means delivering reliable messages that reflect each brand and meet regulatory requirements by default. The role also builds shared messaging services and capabilities, supports AI-assisted messaging workflows, shapes the content platform for messaging and digital channels, and coaches engineers and technical leads while strengthening engineering practices.

Requirements

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.

Nice To Haves

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, such as 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.

Responsibilities

Define 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, including email authentication, push delivery through Apple and Google, SMS carrier compliance, retries, and failover.
Lead decisions about messaging vendors and infrastructure, including build, buy, or adopt tradeoffs.
Build preference, consent, and opt-out management that meets financial-services regulatory requirements.
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.