Senior/Principal Software Engineer (Backend)

Location: Remote or Hybrid (Lisbon)

€4,000 - €6,000 per month (gross)

As a Senior/Principal Backend Engineer, you will design, develop, and maintain high-performance backend systems used across customer-facing platforms, internal tools, and large-scale services. You’ll work closely with Agile teams, product leaders, and cross-functional stakeholders to deliver robust, scalable, and maintainable software solutions.

You may be involved in:

• Architecting new services or modules, from concept through deployment
• Building reliable, reusable, and high-quality code
• Optimizing performance, scaling, and reliability
• Working with microservices, message queues, and asynchronous flows
• Mentoring and guiding more junior engineers (especially at the Principal level)
• Defining best practices, coding standards, and contributing to the technical roadmap

Required competencies:

• Strong experience in back end development
• Any language accepted (Java, .Net, Kotlin, etc.) however the current stack is .Net and C# so applicants must be keen and willing to move this technology stack
• Experience with distributed systems and microservices architecture
• Familiarity with message brokers (e.g., RabbitMQ, Kafka)
• Experience of working in Agile Methodology
• Skills in performance optimization, concurrency, and asynchronous programming
• Experience with large-scale systems: logging, metrics, monitoring
• Capability to design and work autonomously on complex tasks
• Fluent in English (written & spoken)

Nice to have:

• Experience in event-driven or reactive architectures
• Experience in mentoring, setting up architecture guidelines
• Advanced knowledge of algorithms, design patterns, and software best practices

Then offer

• Competitive salary plus performance bonus
• Remote / hybrid work flexibility
• Private health insurance (and family coverage)
• Travel & food allowance
• Access to continuous learning and training (e.g. Udemy)