Software Development Engineer 2

WEX; São Paulo; On-site; BRL 451,000 - 652,000; Full time

Job summary

WEX is seeking a Software Engineer II for the Benefits Engineering team to deliver high-quality software and mentor junior engineers. You will implement team designs, apply TDD and AI-augmented tooling to accelerate delivery, and contribute to robust, scalable services.

You will collaborate across squads to monitor performance, improve system health, and ensure maintainable, well-tested code. A modern cloud stack and REST APIs form the backbone of your daily work.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field; or demonstrable equivalent experience.
• At least 2 years of work experience in software engineering.
• Strong problem-solving and communication and collaboration skills.
• Experience building and consuming REST APIs.
• Passionate about keeping up with modern technologies and design.

Responsibilities

• Propose designs, test, code, and instrument new solutions with juniors, based on team-reviewed designs.
• Mentor juniors and new team members to help growth and navigate challenges.
• Monitor, measure, and improve service performance and system health.
• Support production solutions with proactive monitoring and rapid incident response.
• Learn and apply team processes, providing feedback to improve performance.
• Learn new technologies and share findings to promote adoption.
• Collaborate with seniors to ensure readable, maintainable code with tests.
• Strengthen engineering processes using TDD/BDD, Microservice and VSA.
• Leverage AI-powered development tools to boost coding efficiency.

Skills

C#

Python

OOP & SOLID

AI/ML workflows

Azure

Docker

Kubernetes

GitHub Actions

REST APIs

Kafka

Education

Bachelor's degree in Computer Science/Software Engineering

Tools

Azure

Docker

Kubernetes

GitHub Actions

Kafka

Job description

Software Engineer II, Benefits Engineering

At WEX, we simplify the business of running a business. Our WEX Benefits solutions reduce complexity and help manage costs of benefits administration for our clients and partners. We are looking for passionate technologists, collaborators, and problem solvers to join our Benefits Technology team as we build the next generation of employer benefits solutions and services.

As a Software Engineer II on the WEX Benefits Technology team, you will serve as a core contributor within your engineering team, responsible for delivering high quality software with minimal support. You will implement solutions designed by the team while employing Test Driven Development (TDD) and accelerated delivery through the effective use of Artificial Intelligence. You play a key role in mentoring junior engineers (SDE I) and fostering a culture of continuous learning and operational excellence.

Responsibilities

• Propose designs, test, code, and instrument new solutions in partnership with juniors with minimal support, implementing features based on designs and architectural patterns reviewed and agreed upon by the team.
• Mentor juniors and new team members, helping them navigate technical challenges and understand team processes to foster their growth.
• Monitor, measure, and inspect operational and quality metrics; proactively surface opportunities for improving service performance and system health to the wider team.
• Support production solutions with proactive monitoring, rapid incident response, and continuous improvement; analyze systems to identify bottlenecks.
• Learn our team’s process and best practices, independently apply them to given tasks and provide feedback to improve team performance.
• Learn new technologies, sharing your findings and learnings with the team to demonstrate mastery of the content and promote adoption.
• Work closely with senior team members to review work, ensuring code is readable, maintainable, and covered by comprehensive test suites.
• Strengthen and drive the engineering process using TDD and BDD, Microservice and Vertical Slice Architectures (VSA).
• Leverage AI-powered development tools (e.g., code completion, refactoring assistance) to enhance coding efficiency and maintain high code quality.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field; OR demonstrable equivalent experience.
• At least 2 years of work experience in software engineering.
• Strong problem-solving skills, excellent communication and collaboration skills.
• Passionate about keeping up with modern technologies and design.
• Experience building and consuming REST APIs

Technology Must-Haves

• C#, Python (if applicable)
• Understanding of applied OOP, SOLID, and design principles
• Strong aptitude for integrating AI/ML-driven development workflows into the daily Software Development Lifecycle (SDLC)
• Cloud & Infrastructure: Azure, Docker, Kubernetes, and GitHub Actions
• Architecture: Knowledge of RESTful API design and Kafka/event-driven design
• Data: Modern RDBMS (e.g., MS SQL, Postgres) and NoSQL databases

Technology Nice-To-Have Or Dedicate To Learning Quickly

• Advanced Ops: Helm, ArgoCD, Terraform
• Advanced Querying: GraphQL
• ASP.NET RESTful API design
• Modern Web UI Frameworks and Libraries (i.e. Angular, React)