Backend Engineer (Python or Go) | Lisbon

Job description

Our Unbabel division is seeking a motivated Software Engineer to join our team, as we expand our ability to deliver seamless, scalable cross-platform translation capabilities to our enterprise partners. You’ll drive forward the development, maintenance, and expansion of core backend services that power smooth, intelligent language solutions.

Responsibilities:

• Plan and implement reliable architectures and core services.
• Build, maintain, and optimize codebases in a testable and efficient manner.
• Develop, optimize, and support critical services, infrastructure, and applications in production environments.
• Help evolve our architecture for scale, resilience, and performance.
• Break down complex problems and prioritize technical initiatives with product and engineering teams.
• Champion a culture of continuous improvement, automation, code quality, and architectural best practices.
• Partner with cross-functional stakeholders to deliver solutions aligned with rapidly changing business and technical needs.
• Respond collaboratively to platform and service challenges, employing rapid troubleshooting and prototyping when necessary.

Job requirements

Must Haves:

• 2+ years of backend engineering experience with Python or Go
• Experience building APIs or system integrations (REST and/or gRPC)
• Familiarity with relational and non-relational databases (e.g. Postgres, MongoDB)
• Proven ability to write clean, well-tested code; competence in test automation; familiarity with secure and maintainable architecture
• Experience working in Agile development environments
• Strong English communication skills
• Collaborative mindset with attention to detail, proactive attitude, and eagerness to learn

Nice to Haves:

• Experience with Python frameworks (FastAPI, Flask).
• Contributions to ML/NLP projects or personal projects demonstrating AI engineering capabilities.
• Familiarity with microservices architecture and Kubernetes.
• Past work building, operating, and monitoring production services.
• DevOps exposure, especially in AWS, CI/CD, and infrastructure-as-code (Terraform).
• Hands-on experience instrumenting metrics and alerts (Prometheus, Grafana, PagerDuty).

This position offers:

• A significant role in a dynamic, well-functioning software development division with the world's largest provider of language services and technology solutions
• An opportunity to have real impact in product direction and development
• Advantages of working in a team of subject matter experts that develop cutting-edge web applications
• Significant room for growth
• Great financial rewards