Senior Software Engineer - CRM & Marketing Platform Integrations

Software Engineer

Relay, one of the fastest growing and most highly decorated technology companies in the Philadelphia region, is looking for an experienced Software Engineer to join its fast-paced team. Our vision is to fundamentally change the way that businesses and their customers communicate. Our mission is to give businesses the power to create the easiest, most convenient customer interactions. And our success is marked by the millions of people who use the Relay communications platform every day to connect and communicate with the most important businesses in their lives.

About The Role

We are seeking a highly skilled Software Development Engineer to design, develop, and maintain enterprise-grade connectors and integrations between our applications and key marketing platforms, including Salesforce Marketing Cloud (SFMC), Salesforce Core Platform, Adobe Experience Platform / Adobe Journey Optimizer (AEP / AJO), and Microsoft Dynamics 365.

In this role, you will work closely with Product Managers, Architects, and cross-functional Engineering teams to deliver reliable, secure, and high-performance integrations that enhance customer engagement and data orchestration. You will also play a client-facing role for troubleshooting and providing guidance on designing complex workflows and their implementation.

Job Responsibilities

Design, develop, support, and implement integrated services for :

Salesforce Marketing Cloud (SFMC)

Salesforce Core Platform (Sales / Service Cloud, etc.)

Adobe Experience Platform (AEP) / Adobe Journey Orchestrator (AJO)

Microsoft Dynamics 365 (CRM / Customer Engagement)

Implement robust data synchronization, transformation, and orchestration workflows between internal systems and external platforms.

Develop APIs, SDKs, and related components to support third-party and internal use cases.

Optimize integration performance, scalability, and fault tolerance to meet enterprise-grade requirements.

Ensure integrations comply with security, privacy, and data governance standards (e.g., OAuth 2.0, HIPAA, SOC2).

Collaborate with DevOps and SRE teams to deploy, monitor, and troubleshoot integration services.

Contribute to the evolution of architecture and integration frameworks, using modern development patterns and best practices.

Document technical designs, API specs, and operational playbooks.

Provide technical guidance and mentorship to junior developers.

Participate in client calls to provide technical consultation and guidance on support and implementation requests.

Requirements & Skills

7+ years of professional software development experience, including significant experience building integrations to enterprise platforms.

Deep knowledge in two or more of :

Salesforce APIs (REST, Bulk, Streaming, Metadata), Apex, Lightning Web Components, Visualforce, Flow Builder, SOQL and SOSL

SFMC APIs (REST and SOAP), AMPscript, Journey Builder, Automation Studio, SQL

AEP I / O APIs, XDM schema, and streaming / event services

Dynamics 365 APIs, Power Automate, Dataverse

5+ years coding experience in js, with experience writing scalable backend services.

4+ years of experience with AWS cloud services including Lambda, API Gateway, S3, RDS, ECS / Fargate, and CloudFormation / Terraform.

Hands-on experience with OAuth 2.0, JWT, SSO, and other authentication / authorization patterns.

Proficiency in working with message queues, streaming data platforms (e.g., Kafka, Event Hubs), and cloud-native architectures.

Experience with AI / ML concepts and services for data enrichment or workflow automation; and use of GenAI for development (CoPilot, Calude Code, etc.).

Solid understanding of CI / CD pipelines, containerization, orchestration, and modern deployment practices.

Strong problem-solving skills, attention to detail, and commitment to writing clean, maintainable code.

Excellent communication skills, including the ability to discuss technical concepts with business audiences and clients.

Other Preferred Qualifications

Certifications : Salesforce Marketing Cloud Developer, Salesforce Platform Developer, Microsoft Dynamics 365 Developer Associate, or Adobe Certified Expert.

Familiarity with data transformation frameworks (ETL, ELT).

Understanding of customer data platforms (CDP) and real-time personalization.

Experience developing SDKs or integration toolkits for third-party developers.