Backend Engineer

Level: Mid-Senior

Location:

Dubai, UAE (Onsite) or UK (Remote)

Employment Type:

Full-time

About Us:

First Orion is a telecommunications technology company focused on restoring trust and transparency to phone communications. Founded in 2008 and headquartered in North Little Rock, Arkansas (USA), First Orion provides solutions that protect consumers from scam and spoofed calls while enabling businesses to deliver trusted, branded calling experiences. With teams across North America, Europe, and the Middle East, First Orion operates in a highly collaborative, distributed environment that brings together world-class engineering, operations, and customer-focused talent.

This role will work closely with colleagues across multiple regions, contributing to products and services that help millions of consumers and businesses communicate with confidence.

About the role:

We are looking for an experienced Backend Engineer to help design, build, deploy, and own core microservices. This hands-on role emphasizes backend architecture and cloud deployment for services supporting call treatment orchestration, brand data, analytics, and billing.

You’ll work in a cloud-agnostic, multi-tenant environment using hexagonal and event-driven architecture. You’ll collaborate with distributed engineering teams to deliver secure, observable, carrier-grade services that can run consistently across public clouds and on-premises environments. This is an individual contributor role with no direct people management responsibilities.

What you'll do:

Design, build, enhance, and own Java 21 and Spring Boot 3.x microservices Develop REST APIs and services supporting call treatment orchestration, brand data, analytics, and billing

Apply hexagonal architecture to isolate business logic from infrastructure through ports and adapters

Build event-driven services using Apache Kafka for event streaming and asynchronous processing

Work with PostgreSQL, Redis, and MinIO or other S3-compatible object storage

Design cloud-agnostic, multi-tenant services for deployment across public cloud and on-premises environments

Containerize and deploy services using Docker and Kubernetes Implement secure integrations using modern identity, access management, secrets management, and transport-security practices

Build observable services using modern monitoring, structured logging, dashboards, and distributed tracing tools

Contribute to CI/CD pipelines, technical design decisions, testing, troubleshooting, and production support

Collaborate with distributed engineering teams to deliver reliable, maintainable, carrier-grade solutions

Must-have:3+ years of professional Java development experience using Java 11 or later;
Java 17 or 21 preferred

Hands-on experience with Spring Boot 3.x, including Web, Data JPA, and Security Experience designing and implementing REST APIsExperience with PostgreSQL and/or Redis Experience using Git;
Bitbucket experience preferred

Foundational experience with Docker and Kubernetes Understanding of microservice architecture and modern backend design principles

Experience designing, building, testing, deploying, and supporting production services

Strong problem-solving and communication skills

Ability to work effectively in a collaborative, distributed environment

Nice to have:

Experience with Gradle using Kotlin DSLExperience with OIDC or comparable identity and access management standards

Telecommunications or carrier-integration exposure

Experience building multi-tenant SaaS platforms

Experience with hexagonal, ports-and-adapters, or clean architecture

Experience creating or maintaining Helm charts

Experience with modern monitoring, dashboards, distributed tracing, or structured application logging

Knowledge of cloud-agnostic design patterns and…