3 months ago
Lisbon, PortugalMid Level
Responsibilities
- Estimate development effort to support roadmap planning and expectation management.
- Design and implement resilient, scalable, secure, and fault-tolerant backend architectures.
- Develop and maintain features across the Network API, xSIM Management System, and Recording Platforms.
- Implement incremental enhancements and maintain existing systems for reliability and efficiency.
- Write unit, integration, and other tests to support regression prevention and feature validation.
- Implement monitoring, observability procedures, and platform metrics.
- Participate in code reviews and maintain code quality, readability, and maintainability.
- Own end-to-end feature delivery, technical outcomes, and functional system flows.
- Create and maintain accurate technical documentation.
- Collaborate with the team and contribute to continuous improvement.
Requirements
- At least 3 years of professional backend development experience, preferably with Go; strong Java experience with willingness to learn Go is also accepted.
- Strong understanding and practical experience with concurrency, asynchronous workflows, inter-process communication, and synchronization.
- Experience designing, building, and consuming RESTful APIs.
- Experience with relational and non-relational databases, including data modeling, query optimization, and performance tuning.
- Experience writing unit tests, integration tests, and benchmarks.
- Familiarity with networking protocols and distributed communication patterns such as gRPC, WebSockets, and TCP/UDP.
- Experience building scalable microservices architectures and distributed systems.
- Knowledge of software engineering best practices and design patterns.
- Experience with DevOps tools and practices, including Docker, CI/CD pipelines, and Infrastructure as Code.
- Familiarity with Git workflows, pull requests, code reviews, and agile methodologies.
- Strong ownership of technical outcomes and end-to-end feature delivery.
- Effective written and verbal English communication skills.
- Preferred qualifications include idiomatic Go development, Go profiling with pprof and trace, event-driven architectures using Kafka, RabbitMQ, or ActiveMQ, Kubernetes deployment and maintenance, cloud-native development on AWS, GCP, Azure, or Oracle Cloud, Prometheus and Grafana, and MSML or SIP experience.
Benefits
- Full-time role with hiring available in São Paulo, Brazil.
- Successful São Paulo hires receive onboarding and training in Lisbon, Portugal.
- Opportunity to work across 1GLOBAL offices internationally as the company grows.
- Professional development alongside technology and telecommunications experts.
- Collaborative, international, and fast-paced work environment with open communication.
- Growth opportunities in a rapidly expanding telecommunications company.
Tech Stack
Amazon DynamoDBApache KafkaAWSAzureDockerGitGoGoogle Cloud PlatformGrafanagRPCJavaKubernetesMongoDBOracle CloudPostgreSQLPrometheusRabbitMQRedis
Categories
About 1GLOBAL
1GLOBAL provides eSIM-based mobile connectivity and an owned global core network for enterprises, consumers, and IoT device makers, sold via subscriptions and wholesale/MVNO services. The privately held company operates as a regulated telecom provider across 40 countries, including MVNO operations in 12 markets, and offers APIs to embed mobile service into brands and apps. Founded in 2022 by Hakan Koç and Pyrros Koussios, it is headquartered in Amsterdam.