wex
Software Development Engineer Senior (Backend)
Remote Backend Development role with clear candidate location fit.
PostedJul 3, 2026
Eligible countries1 accepted country
Seniority signalSenior
Work settingRemote
Accepted candidate locations
Brazil
Role overview
Software Development Engineer Senior (Backend)
Requirements and responsibilities
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How you'll make an impact:
- Design, implement, test, and deploy large-scale software systems with a focus on maintainability, scalability, and performance leading by influence.
- Demonstrates system-level thinking and technical leadership through influence rather than management.
- Take end-to-end ownership of stories, regularly delivering complex features and suggesting better implementation paths operating as a senior-level individual contributor with minimal guidance.
- Consistently write thorough unit, integration, and UI tests; drive test-first approaches and coach others on quality practices.
- Actively contribute to grooming by asking insightful testability and edge-case questions that improve story quality.
- Conduct thoughtful design and code reviews, providing meaningful feedback on functionality, architecture, and test coverage.
- Mentor less-experienced engineers, raising the team’s technical bar through coaching and sharing best practices and improving code quality, testing, and delivery practices.
- Participate in system design and architecture discussions, influencing decisions with deep technical insight, contributing actively to design, grooming, and review discussions, shaping both features and engineering culture.
- Proactively identify opportunities for automation, refactoring, and improvement to enhance developer productivity and system reliability.
- Contribute to a culture of collaboration, transparency, and continuous learning across distributed teams in the US and Brazil.
Experience you'll bring:
- Advanced English communication skills.
- Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Information Systems, Management Information Systems, or a related field.
- Master’s degree.
- Proven senior professional software engineering experience.
- Proven expertise in one or more modern programming languages such as Java, Python, C#, or C++.
- Strong knowledge of data structures, algorithms, and system design principles.
- Experience building distributed systems, microservices, and RESTful APIs.
- Demonstrated ability to apply a QA mindset: test-first development, edge-case thinking, and driving quality proactively.
- Comfortable working across the full stack (front-end, back-end, data, cloud).
- Track record of mentoring peers and improving engineering practices.
- Ability to operate independently and confidently while collaborating effectively in agile teams.
Desired qualifications & experiences:
- Experience with Cloud Computing platforms (particularly AWS).
- Hands-on experience with containerization (Docker, Kubernetes) and CI/CD pipelines.
- Strong technical fundamentals in Linux, networking, and operating systems.
- Experience with relational and non-relational databases, including schema design and performance tuning.
- Familiarity with observability tools (logging, metrics, tracing) to ensure system reliability.
- Bias toward data-driven decision-making and using metrics to guide improvements.
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