Software Engineer III (Ruby on Rails)

PrizePicks is the fastest-growing sports company in North America, recognized for its leading platform for Daily Fantasy Sports. The company is seeking a Software Engineer III with strong Ruby on Rails expertise to join their Social Experience team, where the role involves owning feature development, contributing to architectural decisions, and guiding junior engineers.

Responsibilities:

• Own feature development: Take ownership of features end-to-end — from technical design through delivery — breaking complex projects into well-scoped, deliverable pieces
• Write high-quality code: Produce Ruby code that is idiomatic, performant, well-tested, and raises the bar for the codebase
• Contribute to architecture: Participate in team-level architectural decisions around data modeling, service boundaries, API design, and background processing patterns
• Improve quality proactively: Identify opportunities to improve code quality, performance, reliability, and developer experience — and act on them
• Guide junior engineers: Provide technical guidance to Software Engineers I and II through thorough code reviews, pairing sessions, and design feedback
• Collaborate cross-functionally: Work with Product, Design, and QA to validate technical decisions and ensure alignment between product goals and implementation
• Participate in on-call rotation: Take increasing ownership of incident response, contributing to root cause analysis and systemic improvements
• Build team knowledge: Document technical decisions, data models, and service patterns to strengthen your team’s shared understanding

Requirements:

• 3–5 years of professional software engineering experience, with meaningful time building Ruby on Rails applications
• History of delivering complex features within a software team to drive business outcomes
• Experience breaking down ambiguous requirements into concrete technical plans
• Exposure to large-scale, high-throughput distributed systems — you understand the challenges of building software that serves millions of users in real time
• Advanced proficiency in Ruby on Rails — you understand the framework deeply and write clean, idiomatic, production-quality code
• Strong PostgreSQL skills — schema design, query optimization, migrations, and understanding of performance characteristics at scale
• Experience designing and building RESTful APIs within Rails
• Solid testing practices — RSpec or Minitest, unit, integration, and end-to-end testing strategies
• Familiarity with background job processing (Sidekiq or similar)
• Familiarity with containerization (Docker) and orchestration (Kubernetes)
• Understanding of CI/CD pipelines and deployment workflows
• Autonomous — you can take an ambiguous problem and drive it to a well-defined solution
• Comfortable providing and receiving direct technical feedback
• Strong written communicator, especially important in a fully remote environment
• Able to balance deep technical work with collaborative design and planning
• Experience using AI-assisted development tools for coding, planning, and scoping work
• Experience with agentic coding tools and AI-augmented development workflows
• Prior experience working in a remote engineering organization
• Experience contributing to social or relationship-driven systems (feeds, follows, reactions, activity streams)
• Experience implementing stat-driven profile features (aggregations, counters, derived metrics) in production systems
• Working knowledge of graph-shaped data modeling concepts (user relationships, fan-out patterns, denormalization tradeoffs)
• Experience supporting experimentation in social surfaces (feature flags, A/B tests, ranking iterations)