Senior Software Engineer

At Index Exchange, we’re reinventing how digital advertising works—at scale. As a global advertising supply-side platform, we empower the world’s leading media owners and marketers to thrive in a programmatic, privacy-first ecosystem. 

We’re a proud industry pioneer with over 20 years of experience accelerating the ad technology evolution. Our proprietary tech is trusted by some of the world’s largest brands and media owners and plays a crucial role in keeping the internet open, accessible, and largely free. 

We process more than 550 billion real-time auctions every day (in comparison, Google processes 8.5 billion searches per day) with ultra-low latency. Our platform is vertically integrated from servers to networks and runs primarily on our own metal and cloud infrastructure. This end-to-end infrastructure is designed to provide both stability and agility, enabling us to adapt quickly as the market evolves. 

At the core of it all is our engineering-first culture. Our engineers tackle internet-scale problems across tight-knit, global teams. From moving petabytes of data and optimizing with AI to making real-time infrastructure decisions, Indexers have the agency and influence to shape the future of advertising. We move fast, build thoughtfully, and stay grounded in our core values. 

About The Role: 

A Senior Software Engineer takes ownership of their work, encourages peers in their division to avoid silos, and leads by example. They easily apply technology principles and design techniques based on the experience they have accumulated, allowing them to contribute to complex designs, as well as make suggestions for implementing improvements in any given piece of code. They design modules to the constraints imposed by the system and actively contribute to the design of related modules. 

Here’s What You’ll be Doing: 

• You’ll be working on cutting edge programmatic ad tech systems that handle hundreds of billions of transactions every day 
• The systems and tools you’ll be working on allow our partners to easily interact with our exchange including work on Open-Source projects 
• Designing, writing, and testing robust and reliable code 
• Working closely with product to deeply understand the domain and identify opportunities for improvements 
• Finding practical technological solutions 
• Analyzing and estimating work in an agile environment 
• Fostering a collaborative environment by bringing people together to come up with better designs and approaches to complex problems 
• Suggest, promote and implement improvements to coding standards and practices 

Here's What You Need: 

• Extensive hands-on experience as a back end software engineer 
• Positive attitude and ability to learn (new technologies, new ways to work) 
• You are team-oriented and embrace change. 
• Excellent problem-solving skills, the ability to think differently, and an understanding that compromise, negotiation, and practicality are important qualities 
• Understanding and hands on experience with all aspects of developing end-to-end web applications and microservices. This includes architecting, coding, debugging, optimizing/refactoring, automated testing, and deploying of APIs 
• Our codebase runs on GoLang, but we are happy to talk to engineers who are proficient in any back-end technology and willing to learn. 
• Modular, extensible, reusable, maintainable, performant and testable code 
• Automated testing platforms and unit tests 
• General computer science / engineering knowledge: Algorithms, design patterns, software architecture, etc. 

Why You’ll Love Working Here: 

• Comprehensive health, dental, and vision plans for you and your dependents  
• Paid time off, health days, and personal obligation days plus flexible work schedules  
• Competitive retirement matching plans  
• Equity packages  
• Company contribution to Provident Fund 
• Monthly internet stipend 
• Generous parental leave available to birthing, non-birthing, and adoptive parents  
• Annual well-being allowance plus fitness discounts and group wellness activities     
• Employee assistance program  
• Mental health first aid program that provides an in-the-moment point of contact and reassurance  
• One day of volunteer time off per year and a donation-matching program  
• Bi-weekly town halls and regular community-led team events  
• Multiple resources and programming to support continuous learning 
• A workplace that supports a diverse, equitable, and inclusive environment – learn more here 

Equal employment opportunity

At Index Exchange, we believe that successful products are built by teams just as diverse as the audience who uses them. As such, we are committed to equal employment opportunities. We celebrate diversity of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, or veteran status. Additionally, we realize that diversity is deeper than any status or classification—diversity is the human experience. For those who show grit, passion, and humility—Index will welcome you.

Accessibility for applicants with disabilities

Index Exchange welcomes and encourages individuals with disabilities to apply to work with us. 

If you require an accommodation, please share the details of your request and any information how we can assist you with the hiring recruiter when they contact you. Index Exchange will make reasonable efforts to ensure accommodation requests are met throughout the recruitment process.

Index Everywhere, Index Anywhere

Our corporate headquarters are in Toronto, with major offices in New York, Montreal, Kitchener, London, San Francisco, and many other global cities. As a major global advertising exchange, we are committed to operating as a tightly knit global team and embracing and empowering talent wherever our colleagues may be. All our technology positions and teams are open to remote and virtual work.