Description As a Senior Software Engineer, you will work across both legacy and modern stacks, helping transform PHP-based systems into containerized, Node.js-driven microservices running on AWS. This role is ideal for someone who enjoys solving complex backend challenges, improving performance and reliability, and building systems built for scale.
Responsibilities- Modernize and refactor legacy PHP and cron-driven applications into Node.js-based microservices
- Design and build scalable, containerized services using Docker and AWS ECS
- Improve backend performance, reliability, and system clarity across the platform
- Develop and enhance high-throughput redirect, tokenization, and messaging services
- Support and help implement multi-tenant SaaS architecture, including:
- Client isolation
- Customer-specific databases
- Environment-level segmentation
- Work with engineering leadership to design systems that handle burst traffic, heavy write volume, and unpredictable user behavior
- Collaborate with cross-functional technical teams to ensure secure, scalable, and maintainable system designs
- Contribute to ongoing modernization efforts, infrastructure improvements, and code quality standards
Requirements Required- Senior-level backend engineering experience
- Experience building and supporting production systems at scale
- Strong ability to read, understand, and refactor legacy PHP code
- Hands-on experience with:
- Node.js
- Docker
- Microservices architecture
- SQL/MySQL (indexing, query optimization, transactions, performance tuning)
- Experience designing systems resilient to:
- Traffic spikes
- High-volume database writes
- Unpredictable external user behavior
- Comfortable working in a fast-paced, senior-heavy engineering environment
- Pragmatic approach focused on functionality, scalability, and safety
Nice to Have- AWS experience (especially ECS)
- Background with SaaS multi-tenant architectures
- Experience migrating monolithic or cron-driven systems into services
- Exposure to high-volume redirects, tracking, or messaging platforms
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