Backend Engineer (Entry Level)

Magnite; Belfast; Hybrid; GBP 30,000 - 50,000; Full time

Job summary

A leading advertising technology company based in Belfast is looking for a Software Engineer I to join their Marketplace Quality Engineering team. You will be involved in designing and maintaining backend services while collaborating with experienced engineers. Ideal candidates should have a degree in Computer Science and some software engineering experience. This position offers a hybrid schedule and opportunities for career growth.

Benefits

Holiday Breaks

Equity and Employee Stock Purchase Plan

Family-Focused Benefits

Private Medical Insurance

Competitive Pension Plan

Mobile Phone Subsidy

Fitness and Wellness Reimbursement

Qualifications

• 0–2 years of professional software engineering experience including internships.
• Familiarity with at least one statically-typed, object-oriented language (Java preferred).
• Experience with SQL and relational database concepts.

Responsibilities

• Design, build, and maintain backend services and APIs.
• Write production-quality code and automated tests.
• Participate in team planning and agile ceremonies.

Skills

Software engineering basics

Collaboration skills

Proactive attitude

Strong communication

Education

Degree in Computer Science or related field

Tools

Java

Python

Docker

Linux

Job description

Engineer I, Belfast, Northern Ireland Hybrid Schedule (M/F remote, T/W/TH in-office)

At Magnite, we cultivate an environment of continuous growth and collaboration. Our work impacts what millions of people read, watch, and buy, and we’re looking for people to help us tackle that responsibility with creativity and focus.

Magnite (NASDAQ: MGNI) is the world’s largest independent sell-side advertising platform. Publishers use our technology to monetize their content across all screens and formats including CTV / streaming, online video, display, and audio. Our tech fuels billions of transactions per day!

You’ll be part of a collaborative, supportive environment where you can grow your skills and contribute to meaningful projects from day one. The Team: Magnite is looking for a Software Engineer I to join the Marketplace Quality Engineering team. This team designs, builds, and maintains systems that protect the integrity and transparency of Magnite’s advertising automation platform and enable our partners to protect their brands.

In this role you will:

• Work with experienced engineers to design, build, and maintain backend services and APIs
• Write production-quality code and automated tests
• Collaborate across distributed teams to understand requirements and build solutions
• Learn to identify and troubleshoot bugs, performance issues, and edge cases
• Contribute to code reviews, design discussions, and team retrospectives
• Participate in team planning, demos, and agile ceremonies
• Build confidence in delivering high-quality, testable, and maintainable software

We’re looking for someone with:

• 0–2 years of professional software engineering experience (internships and personal projects welcome)
• A degree in Computer Science or a related field
• A strong foundation in computer science fundamentals (data structures, algorithms, OOP)
• Familiarity with at least one statically-typed, object-oriented language (Java preferred)
• Exposure to SQL and relational database concepts
• Comfort using command-line tools in a Linux environment and working with Git
• A proactive attitude and strong communication skills — especially in a collaborative, distributed team environment
• A desire to learn from feedback and grow as a backend engineer
• Experience with Java and/or Python
• Exposure to Docker and cloud platforms (e.g., AWS)
• Academic or project experience with backend systems or APIs

Our current tech stack includes:

• Java / Spring Boot
• Python
• Docker
• JavaScript/TypeScript / React
• Postgres / MySQL
• Linux (both on-premise and AWS)

Comprehensive Perks and Benefits:

• Holiday Breaks and Quarterly Wellness Days
• Equity and Employee Stock Purchase Plan
• Family-Focused Benefits and Parental Leave
• Private Medical Insurance
• Competitive Pension Plan
• Disability and Life Insurance
• Mobile Phone Subsidy
• Fitness and Wellness Reimbursement

Company Culture: We believe collaboration is essential to success. Magnite’s hybrid schedule includes two days worked remotely (Monday and Friday) and three days on-site (Tuesday, Wednesday and Thursday). Our offices provide lunches, beverages, snacks, training and development, and office events to support your work week.

Magnite Invests in You:

• Career Development Initiatives and a Career Growth Framework
• Culture and Inclusion Programs
• Bonusly Peer-to-Peer Recognition Program
• Community Service and Volunteer Events
• Company-Matched Charitable Contributions
• Mental Health Support

About Us: The world's leading agencies and brands trust our platform to access brand-safe, high-quality ad inventory and execute billions of advertising transactions each month. Magnite has offices across North America, EMEA, LATAM, and APAC. Our Commitment: We aim to incorporate a wide range of voices into our Magnite culture, cultivating an environment where employees feel welcomed, cared for, and encouraged to freely share ideas.

Magnite is an equal opportunities employer and welcomes applications from diverse candidates. We are committed to employee growth, collaboration, inclusion, and innovation.