Backend Engineer

**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. You will be part of a collaborative, supportive environment where you can grow your skills and contribute to meaningful projects from day one.

This role is ideal for someone early in their engineering career who's excited to learn, grow, and contribute to systems that make a real-world impact. If that sounds like you — we'd love to meet.

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 (
Requirement 1*

• 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 (delete if not UK)
• 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. We also understand you have appointments, families, hobbies, and other commitments. Magnite strives to maintain a healthy work/life integration for all employees so you can bring your best every day - both at work and at home.

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. Anchored in bustling New York City, sunny Los Angeles, mile-high Denver, historic London, and down under in Sydney, 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. We are committed to employee growth, collaboration, inclusion, and innovation. We invest in Magnite's local communities. We seek talent from all backgrounds to champion corporate values of seeing the big picture and being catalysts of change.
*Want to learn more about us?*
Check out our blog for Magnite announcements and Ad Tech industry news

*Recruiting Agency Notice*
Magnite does not accept agency resumes and is not responsible for any fees related to unsolicited resumes.