Senior Software Engineer, iCasino

penninteractive; United States; Remote; USD 145,000 - 193,000; Full time

Benefits offered by this job

Education reimbursement

Conference allowance

Career development

Mentoring opportunities

Job summary

penninteractive is seeking a senior backend engineer to build and operate backend systems powering online casino experiences, including game discovery, third-party provider integrations, and real-money wagering.

You will own complex production challenges across teams, design GraphQL APIs and gRPC services, optimize performance, and mentor engineers through technical specs and code reviews.

Qualifications

• At least 5 years of software engineering experience.
• At least 2 years designing and evolving GraphQL schemas; Elixir experience preferred.
• Strong foundations in data structures, algorithms, distributed systems, and software design.
• Experience operating production systems at scale, using load testing and tracing to diagnose CPU or latency issues.
• Experience with relational databases such as PostgreSQL or MySQL, Kubernetes, and containerized services.
• Strong written and verbal communication; ability to produce clear technical designs and runbooks; familiarity with testing frameworks, background jobs, and asynchronous messaging.

Responsibilities

• Design and tune GraphQL APIs, low-latency gRPC services, and SQL queries for casino lobby, game launch, and wagering experiences.
• Lead technical proposals and explain design decisions to leadership and partner teams.
• Deliver features and game-provider integrations from design through implementation in an agile team.
• Identify production bottlenecks and risks, and improve platform scalability and performance.
• Maintain monitoring and alerting for owned systems and investigate performance regressions.
• Mentor engineers through technical specifications, pairing, and code review; own service releases and on-call work.

Tools

PostgreSQL

MySQL

Kubernetes

Job description

Role overview

Build and operate backend systems that power online casino experiences, including game discovery and launch, third-party provider integrations, and real-money wagering flows. The role takes ownership of complex production challenges, from API and database performance to reliability, monitoring, and technical direction across teams.

Responsibilities

• Design and tune GraphQL APIs, low-latency gRPC services, and SQL queries for casino lobby, game launch, and wagering experiences.
• Lead technical proposals and explain design decisions to leadership and partner teams.
• Deliver features and game-provider integrations from design through implementation in an agile team.
• Identify production bottlenecks and risks, and improve platform scalability and performance.
• Maintain monitoring and alerting for owned systems and investigate performance regressions.
• Mentor engineers through technical specifications, pairing, and code review; own service releases and on-call work.

Requirements

• At least 5 years of software engineering experience.
• At least 2 years designing and evolving GraphQL schemas; Elixir application experience is preferred.
• Strong foundations in data structures, algorithms, distributed systems, and software design.
• Experience operating production systems at scale, using load testing and tracing to find improvements and diagnose CPU or latency issues.
• Experience with relational databases such as PostgreSQL or MySQL, Kubernetes, and containerized services.
• Strong written and verbal communication, including the ability to produce clear technical designs and runbooks; familiarity with testing frameworks, background jobs, and asynchronous messaging is also relevant.

Nice to have

• Experience in online casino, sports betting, or another regulated real-money field; game-provider or wallet integrations; hexagonal architecture or domain-driven development; open-source contributions; or startup experience.

Benefits and work setup

Remote role with a listed salary range of $145,000–$193,000 USD. The package includes benefits and potential bonus eligibility, along with education and conference reimbursement, career development, and mentoring opportunities.