Backend Engineer

First Orion; Dubai; On-site; GBP 31,000 - 54,000; Full time

Benefits offered by this job

Competitive salary

Medical insurance

Paid time off

Flight allowance

Flexible working

Career growth

Job summary

First Orion is seeking a senior backend engineer to own core microservices across our platform, focusing on call treatment orchestration, brand data, analytics, and billing. You’ll work in a hexagonal, event-driven architecture and collaborate with engineering teams to develop scalable, reliable services.

This hands-on role requires strong Java 21 and Spring Boot experience, PostgreSQL, Redis, and Kafka, plus a proven ability to design, implement, test, and support production services in a

Qualifications

• 5+ years of professional backend or software engineering experience.
• Strong experience with Java 21.
• Experience building services with Spring Boot.
• Experience with Gradle using Kotlin DSL.
• Hands-on experience with PostgreSQL.
• Experience working with 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.

Responsibilities

• Build, enhance, and own core microservices across the First Orion 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 help improve reliability and maintainability of services.
• Troubleshoot issues and support services throughout the development lifecycle.
• Collaborate with distributed engineering teams to deliver high-quality solutions.

Skills

Java 21

Spring Boot

Event-driven architecture

Hexagonal architecture

PostgreSQL

Redis

Kafka

Distributed systems

Problem solving

Communication

Tools

Gradle Kotlin DSL

Job description

Job Details

Level: Senior / 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 build and own core microservices across our platform. This is a hands‑on development role focused on services that support call treatment orchestration, brand data, analytics, and billing. You’ll work within a hexagonal, event‑driven architecture and collaborate closely with engineering teams across First Orion to develop scalable, reliable services that support carrier‑grade communication solutions. This is an individual contributor role with no direct people management responsibilities.

What You’ll Do

• Build, enhance, and own core microservices across the First Orion 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 help improve the reliability and maintainability of services


• Troubleshoot issues and support services throughout the development lifecycle


• Collaborate with distributed engineering teams to deliver high‑quality solutions

What You’ll Need

• 5+ years of professional backend or software engineering experience


• Strong experience with Java 21


• Experience building services with Spring Boot


• Experience with Gradle using Kotlin DSL


• Hands‑on experience with PostgreSQL


• Experience working with 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

Nice to Have

• Experience designing cloud‑agnostic applications


• Familiarity with hexagonal architecture, including ports and adapters


• Experience with MinIO or S3‑compatible object storage


• Experience using Vault or similar secrets‑management tools


• Experience building high‑throughput or low‑latency systems


• Telecommunications or real‑time call‑flow experience

Salary Range (UK)

For UK-based employees, the salary range for this position is £30,800 - £54,100, depending on experience

Salary (UAE)

Compensation for UAE-based employees will be discussed during the recruitment process and will depend on experience

Company Benefits

• Competitive salary package


• Comprehensive medical insurance


• Generous paid time off and public holidays in accordance with local employment requirements


• Retirement or pension benefits where applicable


• Annual home‑country flight allowance for eligible UAE‑based employees and dependents


• Flexible working arrangements and a collaborative team environment


• Opportunities for professional growth and development within a global organization

Work Hours and Employment Terms

Working hours and employment terms will comply with applicable local employment laws and regulations in the country of hire. This role may be based in either the United Kingdom or Dubai, UAE, depending on the selected candidate's location.

Right to Work

Applicants must have the legal right to work in their country of residence.

Equal Opportunity

First Orion is an equal opportunity employer and is committed to creating an inclusive environment for all employees.

All qualified applicants will be considered without regard to race, religion, gender, sexual orientation, age, disability, or any other protected characteristic.

Data Privacy

By applying for this role, you acknowledge that your personal data will be processed in accordance with First Orion's privacy policy and applicable data protection laws.

About the Company

First Orion is a global powerhouse in telecommunications technology. With a team of 300+ innovators, we aren’t just a tech provider; we are the architects of Branded Communication and the frontline of scam protection for Fortune 500 giants and the nation’s largest mobile carriers. The mobile experience is broken. 85% of people won’t answer a call from an unknown number. Thanks to scammers and bad actors, the \"Unknown Caller\" or faceless \"800\" number has become a symbol of anxiety, causing legitimate connections to be lost in the noise. First Orion provides multiple, cutting‑edge ways to bridge the gap between businesses and consumers: Identity Over Anonymity: Through solutions like INFORM® Branded Calling, we replace mystery numbers with verified brand identities, giving people a reason to pick up with confidence. Bulletproof Security: Our real‑time fraud detection and scam protection provide transparency at a global scale. Actionable Intelligence: We use advanced analytics to help companies optimize their reach and protect their reputation. We know that world‑changing technology starts with a world‑class culture. As a 2026 Amazing Workplace for two consecutive years and a certified Great Place to Work for more than 8 years, our foundation is simple: \"People First.\" We believe our team members are our greatest asset, which is why we’ve built a workplace rooted in the same trust and transparency we provide to our customers. For more information, visit firstorion.com.

Follow Us

Follow us on socials: LinkedIn | Facebook | X | Instagram | Reddit