Senior Software Engineer, Promotions

About the role

The Promotions team at PENN Entertainment is seeking a skilled Software Engineer to design, scale, and performance-tune GraphQL APIs, low-latency gRPC services, and SQL queries powering the promotions engine. This role involves owning technical problems of the highest scope and complexity, collaborating in an agile/scrum environment, and mentoring engineers.

Responsibilities

• Design, scale, and performance-tune GraphQL APIs, low-latency gRPC services, and SQL queries powering the promotions engine
• Own technical problems of the highest scope and complexity, drafting proposals and presenting them to leadership and partner teams for feedback
• Design, architect, and deliver new features end-to-end in a collaborative agile/scrum environment
• Identify bottlenecks and areas of risk in production, and drive the changes that make the platform more scalable
• Set up and refine monitoring and alerting in DataDog for the systems you own
• Mentor engineers on the team and across teams that ship into our codebase, through specs, pairing, and code review

Requirements

• A minimum of 5 years of experience in Software engineering
• A solid foundation in computer science, with strong competencies in data structures, distributed systems, algorithms, and software design
• A strong grasp of production systems at scale, and experience identifying areas of improvement in a production environment through load testing and tracing
• Experience investigating and remediating production performance regressions, including CPU hotspots and latency regressions in high-throughput services
• Experience with on-call rotations for a production service, including owning release cycles end-to-end
• Passionate about clean code architecture and software craftsmanship
• Excellent written and verbal communication skills, with a track record of authoring tech specs, runbooks, and cross-team design docs that stand up to scrutiny
• Experience with modern web frameworks and API development (Phoenix, Ruby on Rails, Fast API, Laravel, Node)
• 2+ Years of experience designing and evolving GraphQL schemas for product surfaces used by multiple clients (iOS, Android, Web)
• Experience building and integrating multi-client / white-label platforms, including geo-based routing and per-client configuration
• A strong grasp of relational databases, including PostgreSQL and MySQL
• Experience with Kubernetes and comfort operating services in a containerized environment
• Comfortable working in the terminal, with Git and GitHub or similar, and in an editor of your choice
• Experience with testing frameworks such as ExUnit, RSpec, Jest, pytest, or equivalent
• Experience with background job processing (Oban, Exq, Sidekiq, Celery, Beanstalk)
• Experience with asynchronous event handling infrastructure (Apache Kafka, RabbitMQ, AWS SQS/SNS, Google Cloud Pub/Sub)

Qualifications

• Building applications in Elixir, hexagonal architecture, Domain Driven Development, contribution to open source software, experience working at startups, passion for sports and/or esports are nice to have

Skills

• Strong understanding of modern web frameworks and API development
• Experience with GraphQL and related technologies
• Experience with relational databases and containerization
• Knowledge of testing frameworks and background job processing
• Experience with asynchronous event handling infrastructure

Benefits

What We Offer
Competitive compensation package
Fun, relaxed work environment
Education and conference reimbursements
Opportunities for career progression and mentoring others
Salary Range: $145,000—$193,000 USD

Pay

$145,000—$193,000 USD

Schedule

Full-time