Backend Engineer – SaaS Platform

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Marrina Decisions

WebsiteLinkedInAll Job Openings

11 - 50 employees

🤝 B2B

📣 Marketing

B2B • Marketing

Marrina Decisions is a marketing services company that specializes in managed services for marketing campaigns, particularly those involving Marketo. They offer a wide range of services including Marketo optimization, migration, and quick launch, as well as email marketing services. The company acts as an extended team to offload marketing campaign execution work, allowing businesses to focus on their core activities. With expertise in marketing automation and operations, Marrina Decisions prides itself on delivering high-quality, efficient, and empathetic services that make a measurable impact on their clients' campaigns. Clients commend their ability to seamlessly integrate and manage multi-channel and multi-product customer journeys.

📋 Description

• Maintain and enhance backend services powering the SaaS platform • Ensure uptime, scalability, and performance of APIs handling campaign generation, template storage, and credit-based billing • Optimize MongoDB queries, indexes, and caching strategies • Implement and manage Redis, job queues, and asynchronous workflows • Monitor and maintain AWS infrastructure • Implement API authentication, rate-limiting, GDPR compliance, and email data handling security practices • Maintain API versioning and OpenAPI/Swagger documentation • Write unit and integration tests • Debug and resolve complex production issues

🎯 Requirements

• Strong proficiency in Node.js with TypeScript, Express.js, or NestJS • Experience with MongoDB, schema design, and ORMs such as Mongoose or Prisma • Experience with Redis, including pub/sub and caching • Experience with job queues such as BullMQ or RabbitMQ • Familiarity with AWS EC2, S3, CloudWatch, SES, and Lambda • Experience with Dockerized microservices and CI/CD pipelines such as GitHub Actions • Knowledge of authentication and authorization, including JWT, OAuth2, and role-based access • Basic logging and monitoring experience with Winston, Pino, Prometheus, or Grafana • Unit and integration testing experience with Jest, Mocha, or Vitest • 3–5 years of backend development experience • Prior experience in SaaS applications, high-traffic APIs, or campaign/marketing platforms is preferred • Knowledge of SpamAssassin and DKIM/SPF/DMARC is a plus