Software Engineer, Sportsbook Platform

Penn Interactive

3d•$115,000 - $145,000•Remote

About The Position

PENN Entertainment, Inc. is North America’s leading provider of integrated entertainment, sports content, and casino gaming experiences. The Sportsbook Platform team owns the backend that powers theScore Bet Sportsbook. We are the team behind the marketplace: the event, market, and page-composition systems that decide how bets are surfaced, organized, and updated for the user. What we own is everything around markets: how markets are modelled, how pages are composed, and how quickly changes propagate to patrons. Our stack is primarily Elixir and Phoenix, backed by PostgreSQL, Kafka, and a service mesh of gRPC and GraphQL endpoints running on Kubernetes. We operate at the scale and latency that live sports demand, which means we care deeply about production hygiene: load testing, tracing, structured monitoring, and clear on-call expectations. You will also spend meaningful time reviewing other teams' work in our codebase, defining the shape of upcoming work, and mentoring the engineers around you. We care about the craft as much as the ship. If you like distributed systems, functional programming, live production traffic, and a team that treats software quality as a first-class product concern, you will feel at home here.

Requirements

A minimum of 3 years of experience in Software engineering
A solid foundation in computer science, with strong competencies in data structures, distributed systems, algorithms, and software design
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)
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)

Nice To Haves

building GraphQL APIs with Absinthe
hexagonal architecture
Domain Driven Development
contribution to open source software
experience working at startups
passion for sports and/or esports

Responsibilities

Develop, scale, and optimize the GraphQL APIs, gRPC endpoints, and SQL queries that power the marketplace
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
Take on the Sportsbook Platform Support rotation, which owns release management and deployment management during its window
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
Other duties as required.