Senior Backend Engineer - Golang​/Java

Senior Backend Engineer - Golang / Java

Belfast, Northern Ireland

Hybrid Schedule (M/F remote, T/W/TH in-office)

If you enjoy working in a collaborative environment, learning new technologies, mentoring others, and developing software that shapes the future of audience targeting, we'd love to meet you.

In this Backend Engineer role, you'll help design, build and optimise systems that process billions of events every day, powering Magnite's Audience Platform.

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!

Magnite's Audience Platform helps publishers like Roku and Disney make their advertising space more valuable to advertisers and adverts more relevant to viewers. It gathers real-time signals and contextual data to classify content and audiences, enabling advertisers to reach "cat lovers," "sports fans," and thousands of other segments with precision. All of this happens in milliseconds, billions of times a day, across the internet.

Pretty nifty.

We are looking for a senior backend engineer who loves tackling high volume, distributed systems and tuning ultra-low-latency services. If you thrive in a collaborative, high-ownership environment and want to shape the future of audience targeting at scale, we'd love to meet you.

We're a small, experienced team that values clean design, strong fundamentals, and ownership of what we build. You'll work alongside engineers who love to experiment with new tools and deliver systems that run reliably at massive scale.

• Stream, ingest and asynchronously process 2 Billion+ events every day
• Run sub-20 ms, high-QPS microservices
• Operationalize Data Science models - from simple feature extraction to complex LLMs
• Solve problems with the most appropriate tools and technologies

• Build and scale real-time data systems that process 2 Billion daily events
• Design APIs and microservices that power audience insights in milliseconds
• Collaborate with Ops, Data Science, and Product to turn ideas into production systems
• Own services end-to-end - from design and development to deployment and observability
• Improve performance, reliability, and throughput across distributed systems

• 4+ years of professional software engineering experience (we care more what you can do than exact years)
• Experience in Go is preferred, but proficiency in another modern, object-oriented language is great too - and you'll get the chance to learn Go here
• Hands‑on experience with relational databases (e.g. Postgres) and document databases (e.g. Mongo
  
  DB)
• Strong communication skills, both written and verbal
• Experience collaborating effectively across teams

• Hands‑on experience with Golang in production
• Experience with data streaming tools (e.g. Kafka)
• If you love solving challenging distributed systems problems, and want your work to power products used across the internet, we'd love to talk.
• Experience adding observability features to solutions you've built
• Exposure to high-throughput or low-latency systems
• Familiarity with AWS or other cloud platforms
• Familiarity with SQL and No
  
  SQL data stores
• Implementing caching systems as part of a solution
• Mentoring teammates is a plus

• Golang, Java
• ECS, Fargate, Docker, ALB, HAProxy
• RDS, Maria
  
  DB, Document
  
  DB, Postgres, ScyllaDB
• Redis, Memcache
• Kafka, SNS, SQS
• Terraform, Github Actions, Jenkins

• 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…