Backend Engineer

Salary: £38,000 - 78,000 per year

Requirements:

• 5+ years of professional backend or software engineering experience
• Strong experience with Java 21 and experience building services with Spring Boot
• Experience with Gradle using Kotlin DSL
• Hands-on experience with PostgreSQL, Redis, and Kafka
• Understanding of microservice and event-driven architecture
• Experience designing, building, testing, and supporting production services
• Strong problem-solving and communication skills
• Ability to work effectively in a collaborative, distributed environment
• Applicants must have the legal right to work in their country of residence
• Nice to have: experience designing cloud-agnostic applications; familiarity with hexagonal architecture, including ports and adapters; experience with MinIO or S3-compatible object storage, Vault or similar secrets-management tools, high-throughput or low-latency systems, or telecommunications and real-time call flows

Responsibilities:

• Build, enhance, and own core microservices across our platform
• Develop services supporting call treatment orchestration, brand data, analytics, and billing
• Design and implement solutions using hexagonal and event-driven architecture patterns
• Build scalable, reliable backend services using Java and Spring Boot
• Work with relational databases, caching technologies, and event-streaming platforms
• Contribute to technical design decisions and improve service reliability and maintainability
• Troubleshoot issues and support services throughout the development lifecycle
• Collaborate with distributed engineering teams to deliver high-quality solutions

Technologies:

• Backend
• Cloud
• Gradle
• Hexagonal Architecture
• Support
• Java
• Kafka
• Kotlin
• PostgreSQL
• Redis
• Spring
• Spring Boot
• microservices
• Flow

More:

We are First Orion, a telecommunications technology company founded in 2008 and headquartered in North Little Rock, Arkansas. We build solutions that protect consumers from scam and spoofed calls and help businesses deliver trusted, branded calling experiences. Our teams work across North America, Europe, and the Middle East in a collaborative, distributed environment. This hands-on individual-contributor Backend Engineer role focuses on core platform microservices and involves working with colleagues across regions; it has no direct people-management responsibilities. The full-time position may be based onsite in Dubai, UAE, or remotely in the UK. Local business hours generally apply, though occasional flexibility may be needed for maintenance, implementations, and service escalations across time zones. The UK salary range is 30,800–54,100, depending on experience; UAE compensation is discussed during recruitment. Our energetic, focused, and collaborative culture emphasizes trust, transparency, empowerment, and ownership. Depending on location, benefits may include medical insurance, paid time off and public holidays, retirement or pension benefits, an annual home-country flight allowance for eligible UAE-based employees and dependents, flexible working arrangements, and professional development opportunities. Employment terms comply with local laws. We are an equal opportunity employer and process applicant data in accordance with our privacy policy and applicable data protection laws.

last updated 40 week of 2026