StoneX Group Inc.

Full Stack Developer

StoneX Group Inc.
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2 hours ago
São Paulo, BrazilSenior

Responsibilities

  • Design and implement backend services and APIs for trading, clearing, settlement, and reporting workflows in LATAM markets.
  • Own features end to end, including requirements refinement, technical design, implementation, testing, deployment, and production support.
  • Build integrations with exchanges, clearinghouses, market data providers, and internal global platforms using FIX, REST, messaging, and file-based protocols.
  • Develop data pipelines and reconciliation processes for regulatory and internal reporting.
  • Contribute to architecture decisions, ADRs, runbooks, integration specifications, and build-versus-buy evaluations.
  • Improve observability, automated testing, CI/CD maturity, reliability, and operational automation across owned services.
  • Participate in code reviews and establish standards for code quality, security, and performance.
  • Support production incident response, root-cause analysis, and preventive follow-up.
  • Mentor junior and mid-level engineers and serve as a technical reference for a domain or group of services.
  • Coordinate with distributed teams across the US, UK, and Asia, including collaboration across time zones and in English.

Requirements

  • Professional software engineering experience with demonstrated senior-level ownership of production systems.
  • Strong proficiency in at least one of C#/.NET, Java, or Python, plus solid working knowledge of a second language.
  • Strong knowledge of SQL and relational databases, including SQL Server, PostgreSQL, or Oracle, query tuning, and data modeling.
  • Experience designing and consuming APIs and integrating distributed systems.
  • Familiarity with Kafka, RabbitMQ, or MQ; messaging, streaming, and event-driven patterns.
  • Experience with AWS or Azure, Docker, Kubernetes, CI/CD, Git, automated testing, and monitoring or observability tooling.
  • Professional working proficiency in English and fluency in Portuguese and/or Spanish.
  • Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.
  • Preferred experience in financial services, capital markets, brokerage, clearing, asset management, exchanges, or fintech.
  • Preferred knowledge of trading lifecycles, post-trade operations, market data, risk, FIX, and LATAM market structure and regulations.
  • Preferred experience with regulatory or financial reporting pipelines, data reconciliation at scale, Terraform, performance-sensitive system design, and global matrixed organizations.

Benefits

  • Full-time Monday-to-Friday position with an indefinite contract.
  • Hybrid work arrangement with four days in the office and one day working from home.

Categories

StoneX Group Inc.

About StoneX Group Inc.

5,001-10,000 employees
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