Staff Software Engineer (Elixir)

RYZ Labs is looking for a Staff Software Engineer (Elixir) to join one of our client’s teams in the sports merchandising industry!We’re looking for a Staff Software Engineer to work across the client’s card technology platform and help connect multiple product and engineering domains. This is a hands-on role focused on building, evolving, and maintaining large-scale systems while driving technical decisions, improving engineering practices, and helping teams work more effectively.Basic Qualifications:

• 10+ years of professional software engineering experience.

• Strong proficiency in Elixir and functional programming concepts.

• Proven experience building and maintaining production applications with Elixir and Phoenix.

• Experience owning and evolving large systems spanning multiple services, repositories, and teams.

• Strong understanding of software architecture and experience driving technical decisions across teams.

• Experience with Phoenix LiveView is strongly preferred.

• Strong PostgreSQL knowledge, including query optimization and performance tuning.

• Experience building data ingestion pipelines or ETL processes, particularly from third-party data sources.

• Experience with event-driven architectures, message queues, and cross-service data consistency.

• Strong problem-solving and debugging skills, particularly with complex, numerical, or data-intensive systems.

• Experience working with Git, code reviews, automated testing, and collaborative development practices.

• Excellent written and verbal communication skills, with the ability to influence technical direction across teams.

• Experience working effectively in highly autonomous and primarily remote environments.

What makes you stand out:

• Experience with AWS services such as SQS/SNS, S3, Athena, or Glue.

• Experience deploying and operating services on Kubernetes/EKS.

• Experience with event sourcing, CQRS, or schema-versioned events such as Protobuf or Avro.

• Experience building systems from scratch and later evolving or handing them off to other teams.

• A demonstrated track record of being a force multiplier, improving engineering productivity through mentoring, pairing, code reviews, tooling, or technical leadership.

• Experience leading through influence rather than formal authority.

• Experience diagnosing and resolving complex production issues in systems you did not originally build.

Key Responsibilities:As a Staff Software Engineer, you will work across the platform and product ecosystem, helping ensure systems remain scalable, reliable, and easy for teams to evolve. Your responsibilities will include:

• Owning and evolving complex systems that span multiple teams, services, and repositories.

• Driving architecture discussions and facilitating high-impact technical decisions.

• Designing, implementing, testing, deploying, and maintaining production systems.

• Conducting thorough, high-volume code reviews across repositories to ensure quality, share context, and unblock teams.

• Pairing with and mentoring engineers across teams to improve technical capabilities and productivity.

• Diagnosing and resolving complex production issues, including algorithmic and data-correctness problems.

• Building and maintaining data ingestion pipelines, event-driven services, and cross-service infrastructure.

• Breaking down large, ambiguous, cross-team initiatives into well-sequenced projects and tasks.

• Improving shared engineering practices and infrastructure, including CI/CD, developer tooling, observability, testing, and security.

• Documenting system architecture and creating runbooks to facilitate knowledge sharing and operational excellence.

• Collaborating closely with engineering leads and business stakeholders to translate ambiguous problems into effective technical solutions.

• Building user-facing features end-to-end when needed, from data models through Phoenix LiveView interfaces.

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