3 months ago
Berlin, Germany or Lisbon, PortugalSenior
Responsibilities
- Estimate development effort to support roadmap planning and expectation management.
- Design and implement resilient, scalable, secure, and fault-tolerant backend architectures.
- Develop new features and maintain existing systems across the Network API, xSIM Management System, and Recording Platforms.
- Deliver incremental enhancements and keep existing solutions modern, efficient, and reliable.
- Write and maintain unit, integration, and benchmark tests for regression prevention and feature validation.
- Implement monitoring, observability, and performance metrics for platform contributions.
- Participate in code reviews and maintain high standards of code quality, readability, and maintainability.
- Own end-to-end feature quality and outcomes, including accurate technical documentation.
- Collaborate with team members and contribute to continuous improvement and technical discussions.
Requirements
- 6+ years of professional backend development experience, preferably with Go; strong Java experience with willingness to learn Go is also accepted.
- Strong understanding of concurrency models, asynchronous workflows, inter-process communication, and synchronization techniques.
- Experience designing, building, and consuming APIs with attention to performance and best practices.
- 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 Docker, CI/CD pipelines, and Infrastructure as Code.
- Familiarity with Git workflows, pull requests, code reviews, and agile development processes.
- Demonstrated ownership of technical outcomes and end-to-end feature delivery.
- Effective written and verbal English communication skills for a remote and largely asynchronous environment.
- Preferred qualifications include idiomatic Go development, Go profiling with pprof and trace, event-driven architectures using Kafka, RabbitMQ, or ActiveMQ, Kubernetes deployment and operations, cloud-native development on AWS, GCP, Azure, or Oracle Cloud, Prometheus and Grafana experience, and MSML or SIP knowledge.
Benefits
- Hybrid work arrangement based in Lisbon or Berlin.
- Career growth opportunities in a rapidly expanding telecommunications company.
- Professional development alongside industry experts.
- Opportunities for international experience across 1GLOBAL offices.
- Collaborative, dynamic, and international work environment with open communication and opportunities to contribute.
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.