Senior Java & PHP Developer

About the Role

Were 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. Youll work on mission-critical services that drive automation, data intelligence, and real-time campaign delivery across global clients. Youll 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

69 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.