Senior Software Engineer, Sportsbook Platform (Fully Remote)

PENN Entertainment, Inc.; United States; Remote; USD 120,000 - 170,000; Full time

Benefits offered by this job

Competitive compensation package

Fun, relaxed work environment

Education and conference reimburse m e

Job summary

PENN Entertainment, Inc. is seeking a senior backend/API engineer to design, scale, and tune the real-time delivery infrastructure. You will treat the API schema as a versioned contract with released mobile apps and build fast, correct services capable of handling high throughput.

Ideal candidates have 5+ years in software engineering with a focus on backend or API systems and real-time features such as subscriptions or streaming. Experience with GraphQL, Elixir, and Absinthe is a plus.

Qualifications

• 5+ years of software engineering experience, especially with backend or API systems.
• Experience building real-time features such as subscriptions or streaming.
• Hands-on experience with AI coding agents and modern tooling.

Responsibilities

• Design, scale, and tune APIs and the real-time delivery behind them.
• Treat the API schema as a versioned contract with released mobile apps.
• Build and operate services that stay fast and correct under high throughput, bursty load.

Skills

Backend development

API design

AI coding agents

Education

Tools

GraphQL

Elixir

Absinthe

Job description

• Design, scale, and tune APIs and the real-time delivery behind them.
• Treat the API schema as a versioned contract with released mobile apps.
• Build and operate services that stay fast and correct under high throughput, bursty load.

About You:

• Hands-on, daily experience building software with AI coding agents (Claude Code, Cursor, Copilot agents, or similar).
• At least 5 years of experience in software engineering, with most of it on backend or API systems.
• Experience building real-time features, such as subscriptions, streaming, or push-based updates.

Nice to Have:

• Native mobile experience in Swift or Kotlin.
• GraphQL, including federated graphs.
• Elixir and Absinthe experience.

What We Offer:

• Competitive compensation package.
• Fun, relaxed work environment.
• Education and conference reimbursements.

PENN Entertainment, Inc.

PENN Entertainment, Inc. is North America’s leading provider of integrated entertainment, sports content, and casino gaming experiences, operating from casinos and racetracks to online gaming and sports betting. With locations throughout North America, the company fosters a culture of career growth and innovation, supporting employees in expanding their skills.