Software Engineer (Orchestration)

About Callsign

Role overview

Responsibilities

• Design, develop, test, and maintain Java services and APIs.
• Write clean, testable, maintainable code following engineering practices.
• Clarify requirements with peers, QA, and Product during refinement.
• Participate in code reviews and continuous improvement.
• Perform end-to-end testing of code changes.
• Support production deployments and troubleshoot with SRE and App Support.
• Identify and address technical debt and performance bottlenecks.

Requirements

• 3–6 years of commercial Java development experience; Java 8+/17+, Spring Boot, and REST API design.
• Relational database and SQL experience; familiarity with DynamoDB or other NoSQL databases.
• Familiarity with Docker, Linux, CI/CD, and unit, integration, contract, and regression testing.
• Understanding of OOP, SOLID, and space and time complexity.
• Production metrics and observability experience.
• Experience with rules, expression, or workflow engines and orchestration patterns such as Saga, Process Manager, or state machines.
• Exposure to microservices, Redis, and Kafka; awareness of secure coding and application security.
• Strong communication, analytical thinking, and collaboration skills.

Preferred experience

• Observability tools, message queues, Kubernetes, AWS, or Terraform are good to have.
• Crypto practices, encryption and decryption, distributed-system patterns, reactive programming, Java Virtual Threads, and applied cryptography are good to have.
• Startup or high-growth environment experience is a plus.

Benefits

• Private premium health insurance, visa costs, and a one-month paid hotel stay on arrival.
• Annual home-country airfare allowance, annual leave, and a company bank holiday.
• Paid maternity and paternity leave, competitive salary, and end-of-service gratuity.