Backend Engineer (Python or Go) | Lisbon

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.

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