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Staff Software Engineer

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Staff Software Engineer in Others new

  • USA (city not specified)

Responsibilities

  • Lead backend architecture and development for fraud and payment risk decisioning services, APIs, and shared infrastructure.
  • Design and improve platform scalability, performance, reliability, availability, data consistency, latency, throughput, and cost.
  • Build feature ingestion, integration, and serving capabilities for real-time, near-real-time, and offline or batch-computed features.
  • Develop configurable rules, experimentation, versioning, user acceptance testing, evaluation, and safe rollout capabilities.
  • Own infrastructure supporting the ML lifecycle, including development, validation, deployment, inference, versioning, rollback, and model-output integration.
  • Establish monitoring and alerting for service health, feature freshness and quality, rule and experiment execution, and model inference.
  • Improve platform extensibility and usability so teams can independently add and operate features, rules, models, and experiments.
  • Drive complex initiatives from technical design through implementation, performance testing, migration planning, and production.
  • Raise engineering standards through design and code reviews, mentorship, testing, documentation, deployment safety, and operational improvements.

Requirements

  • 6+ years of professional software engineering experience, including substantial experience building and operating backend systems in production.
  • 5+ years of hands-on Java experience, including building services with Spring Boot.
  • Experience leading the architecture and delivery of complex distributed systems or shared backend platforms.
  • Strong understanding of API design, service integration, data modeling, caching, and distributed-system failure modes.
  • Experience diagnosing performance bottlenecks and improving scalability and reliability through measurement, testing, and production troubleshooting.
  • Experience with cloud infrastructure, containerized deployments, and relational and NoSQL data stores.
  • Experience establishing observability, monitoring, and alerting for production systems.
  • Ability to lead technical decisions across teams, communicate architectural trade-offs, and mentor engineers.
  • Preferred experience with risk platforms, decision engines, fraud or payment risk systems, feature platforms, configurable rules engines, experimentation infrastructure, or production model-serving systems.
  • Preferred familiarity with AWS services including EKS, Aurora, ElastiCache, and DynamoDB.
  • Preferred experience with infrastructure as code and CI/CD automation using Terraform, CDK, and GitHub Actions.
  • Preferred familiarity with Datadog and Snowflake.

Benefits

  • Compensation varies by work location, with listed base salary ranges of $170,000–$212,500 for Tier 3, $180,000–$225,000 for Tier 2, and $200,000–$250,000 for Tier 1.
  • Roles posted in New York, San Francisco, and Salt Lake City are hybrid with on-site expectations of 2–3 days per week.
  • Candidates outside those locations may be eligible for relocation assistance.
  • Benefits are provided through Flex’s careers benefits program.
  • Flex is an equal opportunity workplace with an inclusive culture.

Salary: $170k - $250k/yr

Flex

Flex is a financial technology company that enables health and wellness brands to accept HSA and FSA payments online. The company was founded to simplify a historically complex and restrictive checkout process, making it easier for merchants and consumers to use pre-tax health benefits at the poi...

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