Senior Software Engineer – Elixir

November 13

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Trio

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Fintech • Banking • API

Trio is a Brazilian fintech and payments platform that provides enterprise-grade payment infrastructure, corporate cards, structured credit, investment management and low-latency Pix (instant payments) services. It offers APIs, a sandbox, and a management console for businesses and platforms to embed payments, checkout, FinOps and credit capabilities, and is audited/related to the Brazilian Central Bank for regulatory compliance. Trio primarily serves institutional and business customers seeking scalable, bank-regulated financial tooling.

51 - 200 employees

Founded 2020

💳 Fintech

🏦 Banking

🔌 API

📋 Description

• Develop, maintain, and evolve critical financial management systems, checkout flows, and payment integrations used by customers. • Actively participate in architectural and technical decisions, ensuring high availability, security, and scalability. • Collaborate with Product, Design, and Infrastructure teams to build complete, cohesive solutions. • Implement new features with a focus on performance, quality, and user experience. • Ensure data integrity and transaction resilience in high-volume environments. • Contribute to the continuous improvement of the technology stack, engineering practices, and a culture of technical excellence. • Conduct code reviews, provide mentorship, and support the technical growth of the team. • Participate in strategic discussions about product evolution and the technology roadmap.

🎯 Requirements

• Strong experience with Elixir and the Phoenix Framework, including LiveView. • Proficiency in modern JavaScript (ES6+) and TailwindCSS for building interactive, responsive interfaces. • Experience with distributed, event-driven architectures, particularly Kafka. • Knowledge of Redis and relational databases (PostgreSQL). • Experience designing and consuming APIs (REST and GraphQL). • Experience with microservices, including asynchronous communication and scalability. • Good practices in Clean Code, Design Patterns, and Automated Testing. • Experience with CI/CD pipelines and automation tools (GitHub Actions, GitLab CI, CircleCI, etc.). • Ability to work with observability (logs, metrics, tracing) and troubleshoot production issues. • Technical English for reading and writing. • Experience with domain-driven design (DDD). • Knowledge of financial systems, payment methods, or banking infrastructure. • Experience with Open Finance, Pix, card payments, and regulatory integrations (BACEN, SLC, etc.). • Open-source contributions to Elixir projects or active participation in the Elixir community. • Experience with cloud infrastructure (AWS). • Familiarity with distributed monitoring tools such as Grafana, Prometheus, or Honeycomb. • Ability to work in cross-functional, agile teams using methodologies like Scrum or Kanban. • Product-oriented mindset with attention to user experience and performance.

🏖️ Benefits

• Competitive compensation and differentiated incentives; • Hybrid work model (3 days on-site and 2 remote); • Unlimited sparkling water and soft drinks; • Opportunities and support to keep learning and studying new things—after all, your growth is part of ours!