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Senior Software Developer II

Montreal, Canada

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Xandr operates one of the largest Online Advertising Marketplaces in the world. We receive 9 million requests per second that are auctioned in the blink of an eye, send 40 million requests per second to over 100 integration partners, and process 235K object updates per minute, resulting in 300GB/s of inbound and outbound network flow. The Platform Team is responsible for ensuring that our systems are running as efficiently and robustly as possible. At our scale, even the small improvements can result in significant impact to reducing our costs and enhancing the service to our customers.

Do you like solving large scale challenges and building cutting-edge technology to solve them? Our Bidding Platform Team is responsible for owning and optimizing the core distributed systems infrastructure upon which our Real-Time Bidding Platform is built. Our unique scale challenges (huge volumes of business objects, high number queries per second and vast amount of generated data) require our team to constantly optimize our platform for cost and business growth. We collaborate closely with various teams including Product Teams and Data Scientists to understand business challenges.

As a Technical Leader on the team, you will design, build and optimize software that enables our Bidder Platform to scale with business challenges and to increase reliability while improving productivity. You will continuously work to align yourself with (and espouse) industry-leading software development practices to solve challenges both individually and as a mentor to other more junior developers on the team in a player as well as coach type of role. You will own infrastructural parts of our Real-Time Bidding System that enable other product-focused teams to execute on their client-focused goals.

Xandr exploite l'un des plus grands marchés de publicité en ligne au monde. Nous recevons 9 millions de demandes par seconde qui sont vendues aux enchères en un clin d'œil, envoyons 40 millions de demandes par seconde à plus de 100 partenaires d'intégration et traitons 235K mises à jour d'objets par minute, ce qui entraîne 300 Go / s de flux réseau entrant et sortant. L'équipe d'ingénierie de la plateforme est chargée de s'assurer que nos systèmes fonctionnent de manière aussi efficace et robuste que possible. À notre échelle, même les petites améliorations peuvent avoir un impact significatif sur la réduction de nos coûts et l'amélioration du service envers nos clients.

Aimez-vous résoudre des défis à grande échelle et développer une technologie de pointe pour les résoudre? Notre équipe de plateforme d'enchères est responsable de l'optimisation de l'infrastructure des systèmes distribués de base sur laquelle notre plateforme d'enchères en temps réel est construite. Nos défis d'échelle unique (énormes volumes d'objets entreprise, grand nombre de requêtes par seconde et grande quantité de données générées) motivent notre équipe à optimiser en permanence notre plateforme pour la croissance des coûts et des activités. Nous collaborons étroitement avec diverses équipes, y compris des équipes produit et de science data pour comprendre les défis de l’entreprise.


• 5+ years of experience as a professional Software Developer

• Previous experience providing technical oversight, feedback, guidance, and mentorship to a small team of developers

• Experience using either C, C++, or Java, with excellent and creative problem-solving abilities

• Experience building high performance, multi-threaded, distributed systems and applications, preferably in a Linux environment

• Experience practicing advanced optimization techniques

• Experience with real-time data processing engines, ultra-low-level, and low latency systems is preferred

• Excellent Computer Science fundamentals with regards to data structures, algorithms, time complexity, etc.

• Experience providing mentorship and guidance, including code reviews, training, and feedback

• You are passionate about enabling customer success

Nice Skills to Have:
• Experience with cloud computing technologies (Kubernetes, Azure)

• Experience with Kafka

• Experience with Vertica

More about you:
• You are focused on building high-quality, intuitive products

• You are passionate about learning and teaching

• You love challenging yourself to constantly improve and sharing your knowledge to empower others

• You view processes as a means and not an end, preferring lean or automated approaches to ensure quality and productivity

• You are not satisfied with the status quo and are always looking to improve how things are done and what is built

Compétences et expérience:

• 5 ans ou plus d’expérience professionnelle en génie logiciel

• Expérience antérieure de supervision technique, d’évaluation, de conseils et de mentorat à une petite équipe d'ingénieurs

• Expérience en C, C ++ ou Java, avec d'excellentes capacités de résolution créative de problèmes

• Expérience de la création de systèmes et d'applications distribués multi-threads hautes performances, de préférence dans un environnement Linux

• Expérience pratique de techniques d'optimisation avancées

• Expérience des moteurs de traitement de données en temps réel, préférablement de systèmes à très bas niveau et à faible latence

• Excellentes bases informatiques touchant les structures de données, les algorithmes, la complexité temporelle, etc.

• Expérience de mentorat et de conseils, y compris la révision de code, la formation et l’évaluation

• Vous êtes passionné par la réussite client


• Expérience avec les technologies de cloud computing (Kubernetes, Azure)

• Expérience avec Kafka

• Expérience avec Vertica

À propos de vous:

• Vous vous concentrez sur la création de produits intuitifs de haute qualité

• Vous êtes passionné(e) par l'apprentissage et l'enseignement

• Vous aimez vous mettre au défi de vous améliorer constamment et partager vos connaissances pour outiller les gens qui vous entourent

• Vous considérez les processus comme un moyen et non comme une fin, préférant les approches lean ou automatisées pour garantir qualité et productivité

• Vous n'êtes pas satisfait du statut quo et cherchez toujours à améliorer la façon dont les choses sont faites et la qualité de ce qui est construit


Job ID 2112365X Date posted 05/16/2021
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Invested in your satisfaction and continued success.

We take care of our own here (hint: that could be you). Our benefits and rewards mean we cover some of your biggest needs with some of the coolest offerings. We already think we’re a pretty great place to work. We’re just trying to rack up some bonus points.

Let’s start with the big one: Your work gets rewarded with competitive compensation and benefits. It really does pay to be on our team.


Paid Time Off

Our people have class. Literally. We can help you out on approved education costs with our tuition assistance plan.


Here’s another reason to breathe easy: You and your family get access to excellent medical, dental and vision insurance options.

Insurance Options

Wanna make your friends really jealous? You’ll get discounted access to the latest and greatest AT&T products and services — plus other awesome items, like tickets to live events.


You strike us as an over-achiever (don’t worry, it’s a compliment). Our training and development programs are your ticket to expert status in your job.

Training & Development

When the day comes that you get some much needed R&R (not that you’d ever want to leave #LifeAtATT) you’ll know your future is set with the AT&T Retirement Savings Plan (ARSP).


The Hiring Process

Step 1

Complete a quick application online and check your status often.

Step 2

Virtual or in-person

Dress professionally and ensure good WiFi interviewing virtually.

Step 3

Job Offer

After a background check, you're part of the team.

Step 4

Welcome! Onboarding
and Training Begins

Our training and certification programs set you up for success.

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