Senior Backend Engineer, Ads Platform (Offerwall)

Unity; San Francisco (CA); On-site; USD 147,000 - 190,000; Full time

Benefits offered by this job

Health insurance

Commute subsidy

Employee stock ownership

Retirement plans

Generous vacation and personal days

Parental leave

Job summary

Unity is seeking a senior backend developer to join the Offerwall team. You will design and build features, refactor existing systems, and own critical backend components that process events at scale while ensuring privacy and accurate user identification.

Collaboration across global teams and using AI-assisted tools are encouraged. Responsibilities include building resilient services, participating in reviews, and working with product teams to deliver results.

Qualifications

• Hands-on backend development in Golang or Java.
• Experience designing and maintaining distributed web services at scale.
• Experience with event-driven architectures (Kafka or similar).
• Ability to produce and analyze web service event audit trails.
• Proficient with AI-assisted development tools while maintaining code quality.

Responsibilities

• Design and build new features; refactor and optimize as needed.
• Maintain resilient backend services processing high-volume events.
• Own a key part of a large system and build domain knowledge with team support.
• Participate in code reviews, design discussions, and knowledge sharing.

Skills

Golang

Java

Distributed systems

Kafka

AI-assisted tools

Code reviews

Tools

Docker

Kubernetes

Grafana

OpenTelemetry

BigQuery

BigTable

Job description

The opportunity

We are looking for an experienced, dedicated, and energetic senior developer to join the Offerwall team! Our mission is to build maintainable and resilient systems to identify users by respecting their privacy settings, to create financial transactions for accounting, and deliver virtual rewards to the user. We aim to do so efficiently and effectively at scales in the range of tens of billions of events per hour. Our team and key decision makers are spread across the globe. Come help us ensure users can be identified accurately and rewarded promptly for their activities!

What You'll Be Doing

• Design and build new product features, and refactor and optimize existing ones as conditions change
• Build and maintain resilient backend services that process events at very large scale
• Take ownership of a key part of a large system, building your domain knowledge with support from the team
• Take part in code reviews, design discussions and knowledge-sharing sessions that keep the team collaborating and improving
• Work with product managers and related teams to deliver results that reach users
• Use AI-assisted tools across coding, testing, debugging and documentation, and explore AI approaches that improve the reliability and efficiency of our distributed systems
• Apply our engineering principles and bring your own practices to the team

What We're Looking For

• Hands-on backend development experience in Golang or Java
• Experience developing and maintaining distributed web services at scale
• Experience with event-driven systems, such as Kafka or other message queues
• Experience producing and analyzing web service event audit trails
• Effective use of AI-assisted development tools while maintaining high standards for code quality, security and reliability
• Effective written/verbal communication, with the habit of asking questions early and working closely with teammates

You might also have

• Experience in ad tech or fintech, or with Ruby on Rails
• Experience with SQL and data platforms such as BigQuery and BigTable
• Experience with Docker and Kubernetes, and with observability tools such as Grafana or OpenTelemetry

Additional Details

Base Salary Range: We determine the base salary range for this role based on your primary work location:

• Zone A: $146,500 - $190,400
• Zone B: $130,400 - $169,500
• Zone C: $115,400 - $149,900

This range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate’s relevant experience, professional background, and skill set.

Benefits

• Comprehensive health, life, and disability insurance
• Commute subsidy
• Employee stock ownership
• Competitive retirement/pension plans
• Generous vacation and personal days
• Support for new parents through leave and family-care programs
• Office food snacks
• Mental Health and Wellbeing programs and support
• Employee Resource Groups
• Global Employee Assistance Program
• Training and development programs
• Volunteering and donation matching program

Life at Unity

Unity [NYSE: U] is the world’s leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D — closing the gap between ideas and reality. For more information, please visit www.unity.com.

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.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

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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