Senior Software Engineer - Engage Studio

Treasure AI:

At Treasure AI, our employees are passionate, data-driven, and customer-first. We are a team of drivers who take initiative, anticipate needs, and proactively solve problems. Our actions embody the values of integrity, reliability, openness, and humility.

Your Role:

As a Senior Software Engineer on the Engage Studio team, you will be a core technical contributor building the Marketing Automation engine at the heart of Treasure AI. You will design and implement mission-critical systems that power complex, multi-channel customer journeys-spanning Email, Push, SMS, WhatsApp, and LINE-directly on top of Treasure AI's end-to-end marketing stack, eliminating data latency and integration silos for Global 2000 brands.

You will be responsible for the "last mile" of customer interaction: campaign delivery, open/click event tracking, and unsubscribe management, all natively integrated into our platform. You will own end-to-end development of messaging pipelines and collaborate with other core engineering teams to deliver robust, cross-component features. By integrating AI capabilities-such as LLM-driven generation and predictive optimization-you will transform analytical signals into personalized customer experiences, ensuring our systems remain performant and reliable at enterprise scale.

We are a team of drivers: proactive engineers who define problems, maximize business impact, and leverage AI to deliver customer value beyond the scope of assigned tasks.

Responsibilities & Duties:

• Design and implement event-driven, serverless architectures for multi-channel campaign management and delivery infrastructure - including pipelines for email, push notifications, SMS, and other channels using AWS services.
• Leverage AI coding tools (Claude Code, GitHub Copilot, Gemini) to write clean, efficient Ruby code (mostly Rails) and TypeScript - from design to implementation - with a focus on performance and scalability.
• As a full-stack engineer, contribute beyond your backend core when needed - stepping into frontend development, QA processes, or cross-functional testing to ensure end-to-end feature delivery.
• Partner with cross-functional stakeholders (Engineering, Product, Design) to architect and deliver scalable, cross-component solutions including dynamic in-browser and in-app messaging capabilities.
• Drive feature delivery end-to-end - from technical design and scoping through rollout and post-launch ownership.
• Raise the engineering bar through code reviews, technical mentorship, and improvements to testing, observability, and CI/CD.
• Operate and maintain production systems including monitoring, alerting, and on-call rotations.

Required Qualifications:

• 5+ years of professional software engineering experience building and operating production web applications.
• Strong proficiency in Ruby and Ruby on Rails - or equivalent backend experience in Node.js, Go, or Java/Kotlin - including REST/GraphQL API design.
• Experience with event-driven, serverless architecture design and operations on AWS or similar cloud platforms.
• Working knowledge of modern JavaScript/TypeScript and React sufficient to collaborate effectively on a full-stack product.
• Experience working with relational and/or distributed query systems (Postgres, MySQL, Trino/Presto, Hive, BigQuery, or similar), including reading and optimizing non-trivial SQL queries.
• Experience designing systems that handle non-trivial scale, concurrency, or data volume in production.
• Strong communication skills and a collaborative approach to working with PM, design, and cross-functional engineering teams.
• Openness to feedback and continuous learning.
• Business-level English proficiency - able to communicate complex technical concepts to non-technical stakeholders.
• Bachelor's degree in Computer Science or equivalent practical experience.

Nice to have qualifications:

• Mobile or SDK development experience.
• Cross-team / cross-functional project coordination experience.
• Experience with Terraform or other IaC tools.
• Experience working effectively with colleagues across different time zones in a remote and hybrid work environment.