Judi Health is hiring a Senior Scalability Engineer focused on caching and performance optimization. You will own the architecture, rollout, and continuous improvement of caching solutions across our platform, combining hands-on development with deep performance analysis to eliminate bottlenecks. We are rebuilding trust in healthcare in the U.S. and deploying the infrastructure we need for the care we deserve.
What You'll Do
- Design, implement, and maintain caching architecture using Valkey/Redis (ElastiCache) for high-throughput healthcare applications processing millions of transactions per day.
- Develop and evolve caching libraries and patterns used across multiple engineering teams, establishing best practices for cache key design, invalidation strategies, and performance monitoring.
- Work directly with product teams to design and implement caching solutions tailored to their specific use cases, providing technical guidance and hands-on support.
- Conduct deep performance analysis using profiling tools to identify bottlenecks beyond caching—database queries, application code, infrastructure—and deliver measurable improvements.
- Define performance benchmarks, implement monitoring and alerting, and help teams measure the impact of optimizations through data-driven analysis.
- Enhance observability infrastructure (LGTM stack) to track cache hit rates, latency patterns, and system performance metrics across the platform.
- Mentor engineers on performance best practices, lead architecture reviews, and represent the Scalability team in cross-functional planning discussions.
What We're Looking For
- 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, triggers, stored procedures, plan analysis, and experience with replication and clustering.
- Production caching experience designing and implementing strategies at scale using Redis, Valkey, Memcached, or similar technologies.
- Demonstrated ability to profile applications, identify bottlenecks, and deliver measurable performance improvements (latency reduction, throughput gains, cost savings).
- AWS production experience with Aurora RDS, Lambda, ElastiCache, EC2, ECS, and S3.
- 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.
Nice to Have
- Rust development experience or strong interest in learning Rust for high-performance systems.
- Infrastructure as code experience with Terraform or similar IaC tools.
- Hands-on experience with Grafana, Prometheus, Loki, or similar monitoring/alerting platforms.
- Background in building systems that handle millions of requests per day with strict SLA requirements.
- Previous Pharmacy Benefits Manager (PBM) or healthcare technology experience.
Technical Stack
- Languages: Python, Rust
- Frameworks: Flask, SQLAlchemy
- Data & Caching: PostgreSQL, Valkey/Redis, Memcached
- Cloud & Infrastructure: AWS, Aurora RDS, Lambda, ElastiCache, EC2, ECS, S3, Terraform
- Observability: Grafana, Prometheus, Loki
Benefits & Compensation
- Salary range: $160,000 - $200,000 USD
Work Mode
This is a fully remote position.
Judi Health provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, medical condition, genetic information, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
