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.
Top Skills
What the Team is Saying
What We Do
Together, we power advertising that enables billions of people to stay informed, entertained, and connected. We introduce them to new ideas, products, and services that make their lives better. And we help media owners of all sizes realize their full potential.
That’s a lot — that’s the power of advertising. But it’s only possible with great technology. And that’s where Magnite comes in.
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, online video, display, and audio. Our tech fuels billions of transactions per day!
Why Work With Us
At Magnite, our work impacts what millions of people read, watch, and buy. We strive to cultivate an environment of continuous growth and collaboration. We’re seeking out individuals who share an alternative perspective, challenge the status quo, and aren’t afraid to raise the bar!
Gallery
Magnite Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
Magnite’s hybrid schedule includes two days worked remotely (Monday and Friday) and three days on-site (Tuesday, Wednesday and Thursday) in all offices. Our offices provide daily lunches, beverages, snacks, training, development, office events.
