Staff Backend Software Engineer

The opportunity
Unity LevelPlay is a leading mediation platform that empowers app developers to optimize ad revenue by seamlessly connecting their apps to multiple ad networks.

At the core of LevelPlay, the LevelPlay Infra team is responsible for the mission-critical, real-time in-app bidding system, which serves billions of ad auction requests per day.

We are looking for an experienced and passionate Staff Backend Software Engineer

to join a rapidly growing team. In this role, you will lead the design and evolution of our large-scale, real-time infrastructure that powers global in-app advertising.

You'll tackle complex engineering challenges and drive the design of systems built for massive scale, reliability, and performance. As a hands-on technical leader, you'll influence architecture and implementation decisions that define the future of LevelPlay's infrastructure.

This is a great opportunity for experienced professionals who have a strong background in backend development and a deep understanding of large-scale distributed systems. If you're passionate about tackling complex technical challenges and building products that reach a massive global audience, this role is for you.

What you'll be doing

• Lead the design and development of large-scale, low-latency, high-throughput systems that power real-time ad bidding and delivery.
• Define and drive technical strategy and long-term architecture for LevelPlay's core infrastructure.
• Collaborate cross-functionally with product, data, and ad network integration teams to deliver impactful solutions that scale globally.
• Mentor and guide engineers, fostering a culture of technical excellence, ownership, and continuous improvement.
• Investigate and resolve complex system challenges, optimizing performance, reliability, and cost efficiency.

What we're looking for

• 8+ years of experience in software engineering, with significant experience in distributed systems, real-time systems, or high-scale backend infrastructure ,i.e, message queue technologies (e.g., Kafka, Kinesis, SQS), and key-value databases (e.g., Aerospike, Redis).
• Proven track record of technical leadership — setting architectural direction, mentoring engineers, and leading projects end-to-end.
• Strong proficiency in Java, Scala, Go, or similar languages, and experience working in JVM-based production environments.
• Deep understanding of system design, concurrency, performance tuning, and data pipelines.
• Experience with cloud infrastructure (AWS, GCP, or similar) and modern DevOps practices.
• Excellent communication and collaboration skills; ability to influence technical and product decisions across teams.

You might also have

• Understanding of distributed stream processing and having experience with Flink, Spark Streaming, etc
• Background in observability, distributed tracing, and performance analytics.
• Previous ad-tech experience

Additional information

• Relocation support is not available for this position
• Work visa/immigration sponsorship is not available for this position

Life at Unity
We offer a wide range of benefits designed to support employees' well-being and work-life balance. You can read more about them on our career page.

Unity [NYSE: U] is the leading platform to create and grow games and interactive experiences. Creators, ranging from game developers to artists, architects, automotive designers, infrastructure experts, filmmakers, and more, use Unity to bring their imaginations to life across multiple platforms, from mobile, PC, and console, to spatial computing.

As of the third quarter of 2024, more than 70% of the top 1,000 mobile games were made with Unity, and in 2024, Made with Unity applications had an average of 3.7 billion downloads per month. For more information, please visit Unity.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators. If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.

This position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.

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