Staff Software Engineer

L'opportunité Unity recherche un Staff Backend Developer pour rejoindre notre équipe Unity Ads, où nous concevons les systèmes temps réel qui alimentent la plateforme publicitaire mondiale de Unity. Il s'agit d'un environnement à grande échelle et à faible latence — traitant des milliards de requêtes chaque jour pour diffuser des publicités rapides et pertinentes aux joueurs du monde entier. Notre infrastructure backend est conçue pour la fiabilité et l'évolutivité, garantissant une diffusion fluide des annonces et des performances optimales, même sous forte charge. Au sein de l'équipe, vous travaillerez sur des systèmes distribués qui gèrent les requêtes publicitaires en temps réel, le suivi des impressions et l'analytique des données utilisateur, avec des exigences strictes en matière de disponibilité et de sécurité. Vous jouerez un rôle crucial dans l'optimisation des performances, le maintien de la disponibilité des services et le support au développement de nouvelles fonctionnalités de monétisation pour les développeurs de jeux du monde entier. La sécurité, la protection des données et une expérience utilisateur positive sont au cœur de tout ce que nous construisons. Vous contribuerez à moderniser la pile technologique héritée et les services centraux derrière la diffusion des annonces, l'enchère, le reporting et l'analytique. C'est une excellente opportunité pour un·e ingénieur·e motivé·e par les systèmes critiques en performance, la collaboration inter-équipes et l'évolution dans un environnement dynamique, à un moment charnière pour l'entreprise. Ce que vous allez faire * Concevoir, construire et moderniser des services backend et des APIs qui prennent en charge la diffusion des annonces * Travailler sur des systèmes évolutifs et hautement disponibles utilisés dans l'écosystème publicitaire de Unity * Collaborer avec des ingénieurs, des chefs de produit et des équipes data pour livrer de nouvelles fonctionnalités * Améliorer la performance, l'observabilité et l'efficacité des coûts des systèmes backend actuels, en modernisant la pile héritée * Contribuer aux décisions d'architecture et à l'orientation technique de la plateforme Ce que nous recherchons

• Expérience dans la création de services backend à grande échelle
• Maîtrise de Golang et des bases de données relationnelles (p. ex., MySQL)
• Familiarité avec l'infrastructure cloud et les outils d'observabilité

(Kubernetes, Ray, etc.) * Compréhension de la conception d'API, des systèmes distribués et de la fiabilité des systèmes * Solides compétences en collaboration et en communication au sein d'une équipe « remote-first » Vous avez peut-être également * Expérience en ad tech, publicité programmatique ou systèmes d'enchères en temps réel

• Expérience avec l'infrastructure-as-code (p. ex., Terraform)
• Familiarité avec le réseau, la mise en cache ou les pipelines de données en

temps réel Information supplémentaire

• Le support à la relocalisation n'est pas disponible pour ce poste
• Un visa de travail ou un parrainage de l'immigration n'est pas disponible

pour ce poste The opportunity Unity is looking for a Staff Backend Developer to join our Unity Ads team, where we build the real-time systems that power Unity's global advertising platform. This is a high-scale, low-latency environment — processing billions of requests daily to deliver fast, relevant ads to players around the world. Our backend infrastructure is designed for reliability and scalability, ensuring seamless ad delivery and optimal performance even under heavy traffic. As part of the team, you will work on distributed systems that handle real-time ad requests, impression tracking, and user data analytics with strict requirements for uptime and security. You'll play a critical role in optimizing performance, maintaining service availability, and supporting the development of new monetization features for game developers worldwide. Security, data privacy, and a positive user experience are central to everything we build. You'll help modernize the legacy tech stack and the core services behind ad delivery, bidding, reporting, and analytics. This is a great opportunity for an engineer who's excited to work on performance-critical systems, collaborate across teams, and grow in a fast-paced environment, all at a turning point in the company. What you'll be doing * Design, build, and modernise backend services and APIs that support ad delivery

• Work on scalable, high-availability systems used across Unity's ads ecosystem
• Collaborate with engineers, product managers, and data teams to deliver new

features * Improve performance, observability, and cost-efficiency of current backend systems, modernising the legacy stack * Contribute to architectural decisions and technical direction of the platform What we're looking for

• Experience building backend services at scale
• Proficiency in Golang, and relational databases (e.g., MySQL)
• Familiarity with cloud infrastructure and observability tools (Kubernetes,

Ray, etc.)

• Understanding of API design, distributed systems, and system reliability
• Strong collaboration and communication skills in a remote-first team

environment You might also have

• Experience in ad tech, programmatic advertising, or real-time bidding systems
• Background with infrastructure-as-code (e.g., Terraform)
• Familiarity with networking, caching, or real-time data pipelines

Base Salary Range: We determine the base salary range for this role based on your primary work location: USA, Zone A: $157,800 – $236,800 USD gross USA, Zone B: $178,300 – $267,500 USD gross USA, Zone C: $200,400 – $300,600 USD gros Canada, Zone A: $153,000 – $229,600 CAD gross Canada, Zone B: $165,400 – $248,000 CAD gross 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 At Unity, we want our team members to thrive. We offer a wide range of benefits designed to support well-being and work-life balance. Please note: Benefits eligibility, specific offerings, and coverage vary based on the country and employment status. While specific benefits vary, here are some of the ways we strive to take care of our eligible team members globally: 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 [ 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. Headhunters and recruitment agencies may not submit resumes/CVs through this Web site or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity. Your privacy is important to us. Please take a moment to review our Prospect

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