Hybrid Senior Software Engineer – Elixir

at Trio

• Job title: Senior Software Engineer – Elixir
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: AWS, Elixir, Grafana, GraphQL, JavaScript, Kafka, Postgres, Prometheus, Redis
• Location requirements: Hybrid, Curitiba, Brazil

About the role

• Senior Elixir Software Engineer developing critical financial systems for clients at Trio. Leading architectural decisions and collaborating with cross-functional teams to enhance product solutions.

Responsibilities

• Develop, maintain, and evolve critical financial management systems, checkout flows, and payment integrations used by clients.
• 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.
• Perform code reviews, provide mentorship, and support the team's technical growth.
• 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.
• Familiarity with Clean Code best practices, 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 perform production troubleshooting.
• Technical English for reading and writing.
• Experience with domain-driven architectures (DDD).
• Knowledge of financial systems, payment methods, or banking infrastructure.
• Experience with Open Finance, Pix, cards, and regulatory integrations (BACEN, SLC, etc.).
• Open-source contributions to Elixir projects or active participation in the community.
• Experience with cloud infrastructure (AWS).
• Familiarity with distributed monitoring using tools like Grafana, Prometheus, or Honeycomb.
• Ability to work in cross-functional, agile teams using methodologies such as Scrum or Kanban.
• Product-oriented mindset, with attention to user experience and performance.

Benefits

• Competitive compensation and differentiated incentives;
• Hybrid work model (3 days in-office and 2 remote);
• Unlimited sparkling water and soft drinks;
• Opportunities and support for continuous learning and personal development — your growth is part of ours!