Senior Full-Stack Engineer

Wunderkind; Quebec; On-site; CAD 110,000 - 150,000; Full time

Job summary

Wunderkind Advertising is seeking a senior full stack engineer to drive our roadmap across supply, demand, and platform investments.

You will build and scale campaign placements, integrate SSP demand sources, improve OpenRTB-based auction flows, and contribute to advertiser/publisher tooling and reporting.

The ideal candidate blends backend and frontend excellence with ad-tech fluency and a pragmatic, collaborative approach.

Qualifications

• 5+ years of professional software engineering experience with backend and frontend.
• Proficiency in Go or Java with production APIs and services.
• Strong front-end skills with React and TypeScript.
• Experience designing RESTful APIs and event-driven architectures.
• Knowledge of ad-tech concepts (supply/demand, OpenRTB, VAST) helpful.
• Strong problem-solving, communication, and independence.

Responsibilities

• Design and maintain full-stack product capabilities across backend, APIs, and UI.
• Implement supply-side features across onsite and in-app surfaces.
• Build workflows for advertiser and publisher use cases, including bulk edits.
• Support demand-side integrations and OpenRTB-based flows.
• Collaborate with product, design, and engineering to translate roadmaps.
• Develop reporting and observability to improve visibility into bids and inventory.
• Write clean, tested code and participate in code reviews.
• Ensure latency-sensitive and privacy-aware data handling.

Skills

Full-stack

Go/Java

React/TypeScript

REST APIs

Distributed systems

Ad-tech knowledge

Problem solving

Independence

Communication

Tools

Kubernetes

OpenRTB

Telemetry

Observability

Event-driven

OpenAPI

Job description

Wunderkind ads are 'behaviorally triggered', meaning that ads are served on a premium list of publishers only when a user is done consuming content. Our proprietary tag is integrated directly on the publisher page to track on-site user behavior - making 'net new' ad placements. How we serve the ad is why we are different from our competitors in-market.

Rather than placing an ad in front of someone while they're actively trying to read content, our technology patiently waits until a visitor has stopped reading before rendering our ad on the page. And that patience pays off -- it turns out that when an ad experience respects the user's reason for visiting a page, the user respects the ad experience in return. This unique, brand safe approach to ad experience gives an advertiser's message more attention and greater engagement.

Summary

We are seeking a senior full stack engineer who can help deliver Wunderkind Advertising's roadmap across supply, demand, and platform investments. This includes building and scaling campaign placements and triggers (overlay takeovers, mastheads, in-feed, gallery / milestone units, slider placements, progress bars, ad refresh, and multiple-campaign activation), integrating SSP demand sources, improving OpenRTB-based auction flows, and evolving advertiser / publisher tooling and reporting. The ideal profile combines strong backend engineering, practical frontend product development, and fluency in ad-tech concepts and vocabulary.

The Profile We Are Looking For

• A senior engineer who can move comfortably between backend services, APIs, data / event flows, and frontend product surfaces without losing momentum in either layer.
• Someone who can reason about advertising systems using the language of supply, demand, campaigns, placements, bid requests, SSP integrations, OpenRTB, creative constraints, pacing, segmentation, and reporting.
• An engineer who can translate roadmap themes into implementation plans - for example, new ad placements, campaign-type expansion, refresh logic, segmentation controls, bulk-edit tooling, publisher workflows, and advertiser-facing reporting capabilities.
• A pragmatic builder who can operate in ambiguity, identify the right system boundaries, and ship incremental value while preserving long-term platform quality.
• Ads-space experience is a strong asset; CTV, SSP, auction, or broader ad-tech experience is especially valuable.

Role Responsibilities:

• Design, build, and maintain full stack product capabilities across backend services, APIs, frontend interfaces, and internal tools that support Wunderkind Advertising.
• Implement supply-side product capabilities such as new placements, trigger logic, refresh behavior, and multi-campaign activation rules across onsite, in-app, and adjacent ad surfaces.
• Build frontend and backend workflows that support advertiser and publisher use cases, including segmentation controls, placement configuration, campaign setup, and bulk-edit or operational tooling.
• Contribute to demand-side integrations and optimization work, including SSP onboarding, OpenRTB request / response handling, auction logic, curation flows, and traffic-shaping or path-optimization capabilities.
• Partner closely with product managers, designers, and engineers to translate roadmap items into clear technical designs, scoped milestones, and production-ready implementations.
• Develop reporting and observability capabilities that improve visibility into bids, impressions, inventory, advertiser outcomes, and platform health.
• Write clean, modular, testable code and uphold strong engineering standards through code reviews, documentation, and thoughtful system design.
• Help shape architecture and delivery decisions around latency-sensitive systems, event-driven workflows, privacy-aware data handling, and operational reliability.
• Support production readiness by contributing to monitoring, troubleshooting, incident response, and ongoing platform improvements.

Required Qualifications:

• 5+ years of professional software engineering experience, including substantial hands-on experience in both backend and frontend development.
• Strong proficiency in at least one backend language such as Go, Java, or similar, with experience building production APIs, services, and integrations.
• Strong proficiency in modern frontend development, ideally with React and TypeScript, including experience building product configuration or operational interfaces.
• Experience designing and integrating with RESTful APIs, event-driven systems, and service-oriented architectures.
• Ability to model and implement business logic for campaigns, placements, segmentation, reporting, or workflow configuration in a scalable and maintainable way.
• Solid understanding of distributed systems fundamentals, production debugging, observability, and performance considerations.
• Ability to reason about ad-tech concepts such as supply and demand flows, SSP integrations, OpenRTB, VAST, impression / click tracking, creative metadata, privacy signals, and latency-sensitive request paths.
• Experience working with telemetry, analytics, or event streams to power reporting and operational visibility.
• Comfort working across the full delivery lifecycle: discovery, technical design, implementation, testing, deployment, and post-launch support.
• Strong problem-solving skills, attention to detail, and the judgment to make pragmatic trade-offs in ambiguous environments.
• Ability to work independently and autonomously without requiring constant supervision.
• Excellent communication and collaboration skills.

Additional Qualifications:

• Experience in the Ads, CTV, SSP, DSP, OEM, or broader ad-tech space is a strong asset.
• Familiarity with OpenRTB, VAST, impression / click tracking, privacy signals, and creative rendering workflows.
• Experience building configurable campaign, placement, segmentation, or rules-based product capabilities.
• Experience with advertiser reporting, publisher tooling, dashboards, or bulk-edit / operations interfaces.
• Experience with Kubernetes, service-oriented architectures, queues / streams, or observability tooling.
• Exposure to video, image, or creative-processing pipelines, including asset packaging or transformation flows.

What Success Looks Like

• You independently deliver meaningful product and platform work across both backend and frontend surfaces.
• You raise the team's ability to operate in Ads by bringing strong technical judgment and by navigating the language and constraints of the domain.
• You contribute to roadmap delivery across new placements, campaign capabilities, integrations, and reporting without requiring heavy translation from domain experts.
• You help reduce execution risk by identifying technical gaps early, shaping sound implementation plans, and driving work to completion.

This role is intended for a senior engineer who can bring the technical language, systems thinking, and implementation depth needed to operate effectively in a growing Ads / CTV space.