Senior Back End Engineer (Ruby on Rails & GO)

The role

You will design and build backend services across a Rails monolith and Go microservices. You will support the migration to microservices and build internal tooling APIs for the Back Office team.

What you will do

• Build and own backend services across Rails and Go
• Support the migration from monolith to microservices
• Power internal tooling APIs for Back Office operators
• Lead the design and implementation of complex features
• Diagnose and resolve performance bottlenecks
• Propose and drive architectural decisions
• Provide hands-on mentorship to Software Engineers I, II, and III
• Improve engineering practices around code quality and testing
• Collaborate cross-functionally with Product and QA
• Participate in on-call rotation

Required qualifications

• 5–8 years of professional software engineering experience
• Meaningful production time in both Ruby on Rails and Go
• Experience owning and delivering complex, multi-component features
• Experience with monolith-to-microservices migrations
• Experience designing or operating distributed systems or event-driven architectures
• Strong Rails proficiency
• Strong Go proficiency
• Solid PostgreSQL skills
• Solid understanding of API design (REST and/or gRPC)
• Experience with asynchronous workflows
• Experience with containerization (Docker) and orchestration (Kubernetes)
• Familiarity with CI/CD pipelines and deployment automation

Nice to have

• Experience with event-driven architectures using Pulsar, Kafka, or similar
• Experience with NATS request/reply or JetStream patterns
• Familiarity with internal tooling or operator-facing platforms
• Experience in high-traffic, real-time systems
• Familiarity with infrastructure tooling (Terraform, Kubernetes, ArgoCD)
• Experience in the daily fantasy sports or sports betting industry
• Experience leveraging AI-assisted development tools
• Experience integrating AI tooling into engineering workflows

Benefits

• Company-subsidized medical, dental, & vision plans
• 401(k) plan with company match
• Annual bonus
• Flexible PTO
• 16-week paid parental leave
• Disability benefits
• Workplace flexibility and modern work schedules
• Company-wide in-person events and team outings
• Lifestyle enhancement program
• Company equipment provided (Windows & Mac options)
• Annual performance reviews

Before you apply

• You must be authorized to work for any employer in the U.S.
• Unable to sponsor or take over sponsorship of an employment Visa

About the company

PrizePicks is a leading platform for Daily Fantasy Sports. It is a fast-growing sports company in North America with a team of over 550 employees.