Senior Java & PHP Developer

About the Role

We're looking for a Senior Java & PHP Developer to join our backend engineering team that powers high-throughput, large-scale SaaS platforms — delivering billions of personalized communications and marketing events every month. You'll work on mission-critical services that drive automation, data intelligence, and real-time campaign delivery across global clients. You'll play a key role in designing scalable APIs, improving platform performance, and mentoring developers — while working closely with distributed teams aligned to US (EST) time zones.

• Key Responsibilities
• Architect, design, and develop scalable backend services using Java (Spring Boot, Microservices) and PHP (Laravel/Symfony/custom frameworks).
• Lead system design and architecture reviews, ensuring clean code, maintainability, and adherence to best practices.
• Drive API integrations, microservices deployment, and modernization of legacy components.
• Collaborate with product managers, DevOps, and data engineering teams to deliver highimpact features and performance improvements.
• Build, maintain, and monitor data-intensive systems that handle large message/event volumes with high reliability.
• Implement strong observability practices (metrics, tracing, alerting) and contribute to production incident reviews.
• Perform code reviews, mentor junior engineers, and advocate engineering excellence.
• Work collaboratively across global teams during EST business hours for sprint planning, releases, and incident response.

Required Qualifications

• 6–9 years of professional backend development experience.

• Expert in Java (Spring Boot, REST APIs, concurrency, JVM tuning) and PHP (Laravel/Symfony, Composer, PSR standards).

• Strong experience with MySQL / PostgreSQL, Redis, and NoSQL systems.

• Familiarity with AWS services (S3, Lambda, ECS/EKS, CloudWatch) and CI/CD pipelines (Jenkins, GitLab, GitHub Actions).

• Hands-on experience in scalable, distributed architectures and performance optimization.

• Strong debugging, profiling, and system performance tuning capabilities.

• Proven ability to deliver reliable, secure, and production-ready code in fast-paced agile environments.

• Excellent communication skills; able to coordinate with global teams across time zones.

Preferred Skills

• Exposure to Kafka, RabbitMQ, or other event-driven systems.

• Familiarity with containerization (Docker) and orchestration (Kubernetes).

• Experience integrating with third-party APIs and external SDKs.

• Prior experience in AdTech, Martech, or high-volume SaaS platforms (similar to Sailthru/Zeta Global ecosystem).

• Knowledge of Python/Go for cross-service utilities or internal tooling is a plus.

What We Offer

• Opportunity to work on high-scale enterprise systems with real-world impact.

• Exposure to global engineering practices and advanced cloud architectures.

• Collaborative culture with technical ownership and innovation freedom.

• Competitive compensation aligned with experience and global standards.