Samsung Ads is looking to add an Intermediate Ruby on Rails Developer to our DSP API  team.

About Advertiser Platform

Our group is responsible for building our campaign management application to support our in-house ad operators, self-serve users, and programmatic traders and for delivering ads that are most appropriate for the end-user. We handle ~1,000,000 requests per second. We have a maximum of 100ms to parse an ad bid request, query our databases to find the most appropriate ad for that end-user, decide on our bid price, and respond. We manage an inventory of ~10,000 active ads for ~250 concurrent campaigns driving tens of millions of dollars in monthly revenue; generating ~600,000,000 ad impressions daily. We support ad operators from all around the world in multiple currencies and languages. 

We need the best minds to optimize this bidding process. Are you up to the challenge?

This role reports directly to Leslie Williamson, Engineering Manager.

Our tech stack includes a Ruby on Rails GraphQL API with PostgreSQL, and a Typescript and React.js UI with Webpack.

All of our employees are currently working remotely from home. In the future, this role will be fully remote based anywhere in Canada or hybrid based and will require a mix of working from our Montreal, QC and remote work.

What you will do

As an Intermediate Ruby on Rails Developer, you will be responsible for designing, building, deploying and maintaining a large client-facing web application and its API used to configure and provide analytics of a high-volume real-time bidding platform. As a result, there will be opportunities to contribute to open-source, review code, and share knowledge.

Other things you probably enjoy or would be interested in learning:

  • Working with an experienced and passionate agile team within an engineering organization that values a strong technical culture

  • Designing, building, and improving core services and API gateways for our demand-side platform (DSP)

  • Designing and developing new services for our next generation platform.

  • Ensuring service performance, scalability, observability and reliability

  • Ensuring high-quality delivery through automated testing and deployment pipelines

What you'll need

  • 2+ years of backend development experience with MVC frameworks, preferably Rails (if you do not have Rails experience, interest in learning) 

  • Experience optimizing the performance of existing platforms

  • Experience designing, building, and testing APIs (REST, GraphQL)

  • Strong SQL and database skills (regarding integrity, design, performance, etc)

  • Outstanding problem-solving outlook and can-do attitude

  • A love for working as a team and participating in our tech community Guilds and Community of Practice groups

  • Excellent communication skills and fluency in English with French being a nice to have

Nice to Haves

  • Previous AdTech experience

  • Experience building and designing Microservices

  • Experience using Docker and Kubernetes

  • Experience working with CI/CD pipelines

  • Experience working in an agile environment, specifically Scrum



  • 100% company-paid comprehensive health & dental coverage (including massage and therapeutic care) as of Day 1. Access to an employee assistance program  and a virtual care platform (wellness, medical & nutrition).

  • Personal spending account & Healthcare spending account with Sun Life Life that can offer you personalized perks like home office equipment, spa treatments, green living, fitness equipment, music streaming services and more!

  • Up to 2000$ reimbursed for Mental Health Care

  • Generous RRSP Matching Program up to 5% 

  • Competitive compensation package, including performance incentive bonus plan based on company, team and personal objectives

  • Minimum 21 days of paid time off 


  • Virtual social committee-lead activities such as monthly wine club night, games night as well as wellness initiatives like virtual yoga and meditation, art therapy, aromatherapy classes

  • Access to learning and development opportunities (your own LinkedIn Learning license, Pluralsight, professional development program, continuing education and more)

  • Officevibe – anonymous feedback from our teams to know how you’re really doing and keep you engaged

  • Onboarding framework which ensures you’re set up for success from Day 1 to Year 1. This also includes a buddy program (someone who will be there for you) from Day 1

  • Amazing discounts through Samsung Employee Discounts website and access to Perkopolis website with great rebates, coupons and promotions

  • Summer Fridays

  • Generous  Employee Referral Program

  • Giving Back Program which includes donation matching & volunteering initiatives including one paid volunteer day

*certain benefits & perks apply to only full time permanent roles. Please ask TA for additional details.


Life at Samsung Ads

Samsung Ads is an advanced Advertising Technology Company in rapid growth that focuses on enabling brands to connect with Samsung TV audiences as they are exposed to digital media by using the industry’s most comprehensive data to build the world’s smartest connected audience platform. Being part of an international company such as Samsung and doing business around the world means that we get to work on big complex projects with stakeholders and teams located around the globe.

We are proud to have built a world-class organization, grounded in an entrepreneurial and collaborative spirit. Working at Samsung Ads offers one of the best environments in the industry to learn just how fast you can grow, how much you can achieve, and how good you can be. We thrive on problem-solving, breaking new ground, and enjoying every part of the journey.

Are you hesitant to submit an application because you're not sure if you check every box? Apply anyway! We would love to hear from you and figure out what you can add to the culture here at Samsung Ads.

*Internal job title is ‘Software Developer’

Ready to make the jump?

Read our FAQ section to find the answers to your questions