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Affordable Pharmacy Benefits, Powered by Modern Infrastructure.
Senior Scalability Engineer – Caching, Performance Optimization
Location
United States
Posted
128 days ago
Salary
$160K - $200K / year
Seniority
Senior
Job Description
Senior Scalability Engineer – Caching, Performance Optimization
Capital Rx
• Own caching infrastructure: Design, implement, and maintain caching architecture using Valkey/Redis (ElastiCache) for high-throughput healthcare applications processing millions of transactions per day. • Build shared libraries: Develop and evolve caching libraries and patterns used across multiple engineering teams, establishing best practices for cache key design, invalidation strategies, and performance monitoring. • Partner with engineering teams: Work directly with product teams to design and implement caching solutions tailored to their specific use cases, providing technical guidance and hands-on support during implementation. • Drive performance optimization: Conduct deep performance analysis using profiling tools to identify bottlenecks beyond caching—database queries, application code, infrastructure—and deliver measurable improvements. • Establish performance standards: Define performance benchmarks, implement monitoring and alerting, and help teams measure the impact of optimizations through data-driven analysis. • Contribute to observability: Enhance observability infrastructure (LGTM stack) to track cache hit rates, latency patterns, and system performance metrics across the platform. • Demonstrate technical leadership: Mentor engineers on performance best practices, lead architecture reviews, and represent the Scalability team in cross-functional planning discussions. • Responsible for adherence to the Capital Rx Code of Conduct, including reporting of noncompliance.
Job Requirements
- 10+ years of software engineering experience with demonstrated progression into technical leadership roles.
- 3+ years of experience leading technical initiatives, mentoring engineers, or serving as a subject matter expert on complex systems.
- Strong expertise in Python (Flask/SQLAlchemy) for production applications.
- Deep PostgreSQL knowledge: Advanced query optimization, indexing strategies, triggered, stored procedures, plan analysis, and experience with replication and clustering.
- Production caching experience: Proven track record designing and implementing caching strategies at scale using Redis, Valkey, Memcached, or similar technologies.
- Performance optimization expertise: Demonstrated ability to profile applications, identify bottlenecks, and deliver measurable performance improvements (latency reduction, throughput gains, cost savings).
- AWS experience: Production experience with Aurora RDS, Lambda, ElastiCache, EC2, ECS, and S3.
- Systems thinking: Ability to analyze performance across the full stack — application, database, caching, infrastructure — and make architectural tradeoffs.
- Strong written and verbal communication skills with ability to work autonomously while driving proactive collaboration in a remote environment.
Benefits
- All employees are responsible for adherence to the Capital Rx Code of Conduct including the reporting of non-compliance.
- Judi Health values a diverse workplace and celebrates the diversity that each employee brings to the table.
- Equal employment opportunities to all employees and applicants for employment.
- Employees are prohibited from discrimination and harassment of any type without regard to various characteristics protected by law.
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