Hybrid Backend Software Engineer – Golang, Java

Posted 3 weeks ago

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About the role

  • Provide accurate effort estimates to support roadmap planning and effective expectation management.
  • Design and implement resilient, scalable, secure, and fault-tolerant architectures to ensure system reliability and performance.
  • Develop new features and support existing systems across the Network API, xSIM Management System, and Recording Platforms.
  • Contribute with small, incremental enhancements that seamlessly integrate into the established codebases.
  • Maintain and update existing solutions to keep them modern, efficient, and reliable.
  • Collaborate with team members to ensure smooth development processes and shared understanding.
  • Write and maintain comprehensive tests to ensure fast regression and reliable validation of new features.
  • Implement procedures and metrics to enable effective monitoring and observability of platform contributions.
  • Participate in code reviews to promote high standards of code quality, readability, and maintainability.
  • Take ownership of the quality and outcomes of your work, ensuring fully functional end-to-end flows.
  • Create and maintain accurate, up-to-date technical documentation.
  • Actively contribute to team discussions, with a mindset for continuous improvement and openness to new ideas or technologies.

Requirements

  • 3+ years of professional experience in backend development, preferably with Go (Golang). Strong Java experience with willing to learn Go is also welcome.
  • Strong understanding of concurrency models, with practical experience in implementing asynchronous workflows, inter-process communication, and synchronisation techniques.
  • Skilled in designing, building, and consuming RESTful APIs, following best practices for API design and performance optimisation.
  • Proven experience working with databases, both relational (e.g., PostgreSQL) and non-relational (e.g., Redis, MongoDB, DynamoDB), including data modelling, query optimisation, and performance tuning.
  • Experienced in writing unit tests, integration tests, and benchmarks, with a test-driven development mindset.
  • Comfortable with networking protocols and distributed communication patterns (e.g., gRPC, WebSockets, TCP/UDP).
  • Experienced in building scalable microservices architectures and distributed systems.
  • Knowledgeable in applying software engineering best practices and design patterns for maintainable, testable code.
  • Skilled in using DevOps tools and practices, including Docker, CI/CD pipelines, and Infrastructure as Code.
  • Familiar with Git workflows and collaborative development processes such as pull requests, code reviews, and agile methodologies.
  • Demonstrated accountability for technical outcomes and ownership of end-to-end feature delivery.
  • Effective communicator in English, both written and verbal, suitable for a remote and largely asynchronous work environment.
  • Proficient in writing idiomatic Go code, with solid understanding of the language’s core features such as interfaces, structs, composition, and error handling.
  • Competent in profiling and performance tuning using Go’s built-in tools such as pprof and trace, with a focus on optimisation.
  • Demonstrated experience with event-driven architectures, including the implementation of producers and consumers using platforms like Kafka, RabbitMQ, or ActiveMQ.
  • Solid hands-on experience deploying, monitoring, and maintaining applications on Kubernetes.
  • Working knowledge of cloud platforms (e.g., AWS, GCP, Azure, Oracle Cloud) with experience deploying cloud-native applications.
  • Hands-on experience with observability and monitoring tools like Prometheus and Grafana.
  • Experience with MSML and SIP is a strong plus

Benefits

  • CLT contract — enjoy job stability and reliable benefits that value your work
  • Quarterly performance bonuses to reward your hard work and achievements
  • Meal allowance paid into Caju card — R$100 per working day
  • Health insurance with SulAmérica — 50% covered by the company
  • Daycare allowance provided to mothers with children under 3 years old — R$500 per month per child
  • Kickstart your journey with an exciting welcome onboarding trip to one of our European offices (Lisbon or Berlin)!

Job title

Backend Software Engineer – Golang, Java

Job type

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

Bachelor's Degree

Location requirements

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