Sr. Full Stack Engineer

Unity Technologies; Toronto; On-site; CAD 135,000 - 176,000; Full time

Benefits offered by this job

Health insurance

Life insurance

Disability insurance

Commuter subsidy

Employee stock ownership

Retirement plans

Vacation and personal days

Family-care support

Training and development programs

Mental health support

Employee resource groups

Job summary

Unity Technologies is seeking a Senior Full-Stack Engineer to own the service layer of the Unified Ads Platform. You will design data contracts, model scaleable entities, and ensure correctness across downstream systems in production.

You’ll build APIs with NestJS and React surfaces, operate on Kubernetes, and maintain SLOs while mentoring peers. This role blends backend and frontend mastery with ownership mindset for long-term reliability.

Qualifications

• 6+ years building and operating production software with backend and frontend focus.
• Advanced TypeScript and modular Node/NestJS experience.
• Strong data modeling, SQL, and API versioning judgment.
• Experience with event-driven systems like Kafka or Pub/Sub.
• Advanced React with performance in data-heavy UIs.
• Cloud-native operation and ownership of production services, SLOs.
• Strong ownership mindset and focus on observability and quality.

Responsibilities

• Design, build, and operate services in TypeScript (NestJS) across a large domain.
• Model entity data for scale, migrations, and schema evolution.
• Build event-driven integrations with Kafka and Pub/Sub for consistency.
• Deliver user-facing surfaces in React and TypeScript over the platform.
• Operate services on Kubernetes with ownership of deployment and scaling.
• Drive observability, metrics, tracing, and testing across the platform.
• Set design and code review standards, mentoring engineers.

Skills

Advanced TypeScript

Strong data modeling

React experience

API design

Ownership mindset

Cloud-native operation

Tools

NestJS

Kafka

Google Cloud Pub/Sub

Kubernetes

Job description

The opportunity

At Unity, we’re building a world-class advertising platform that operates at a massive global scale. The Ads team powers the systems that connect advertisers with creators and players, driving performance, reliability, and growth across our ecosystem.

As a Senior Full-Stack Engineer on the Unified Ads Platform team, you’ll own the service layer where advertiser and publisher entities live. Campaigns and budget caps, applications and ad units, creative packs and the moderation pipeline behind them, offerwall currency, A/B tests, LevelPlay integration. These are the records the rest of the ads estate reads from, and our APIs are the source of truth for them across serving, billing, and reporting.

This role goes beyond building an API and moving on. The data you model is consumed by systems you don’t own, in paths where a wrong value costs money. You’ll design contracts that stay stable as the product changes, keep state consistent across service boundaries, and own the correctness and availability of all of it in production.

This role is ideal for someone strong on both sides of the stack who thinks in terms of data contracts and correctness, and who wants real ownership of systems other engineering teams depend on. As the team grows, this role has a path to evolve into a Tech Lead Manager position.

What you’ll be doing

• Design, build, and operate services in our TypeScript platform (NestJS) across a large domain model, owning the APIs and data contracts that downstream ads systems depend on
• Model entity data for scale and change — relational schema design, migrations, and schema evolution against tables that serving, billing, and reporting all read from
• Design and build event-driven integrations with Kafka and Google Cloud Pub/Sub, using patterns such as transactional outbox and idempotent consumers to maintain consistency across service boundaries.
• Deliver the user-facing surfaces on top of the platform in React and TypeScript, turning dense entity and performance data into workflows publishers and advertisers can trust
• Operate what you build on Kubernetes, where the service declares its own cloud infrastructure alongside its code, and take real ownership of its SLOs
• Drive observability and quality across the platform — distributed tracing, metrics, and testing frameworks
• Set the standards for how the service is built and hold the line on them in design and code review, mentoring engineers as you go

What we’re looking for

• 6+ years building and operating production software, with real depth on both backend services and modern frontend
• Advanced TypeScript , and experience with an opinionated, modular Node backend framework — NestJS, or comparable dependency‑injection and module architectures
• Strong data modelling and SQL — schema design, migrations, and performance at scale, alongside the API versioning judgment that goes with it. You’ve had to change something other teams read from, safely
• Event‑driven systems — Kafka, Pub/Sub, or similar. You understand delivery semantics, ordering, and idempotency, and what happens when two systems disagree
• Advanced React , with strong judgment around component design, state management, and performance in data‑intensive interfaces
• Cloud‑native operation — containerized services on Kubernetes, and comfort owning the system in production, including deployment, scaling, monitoring, incident response, and on‑call
• Strong ownership mindset — focused on correctness, observability, and long‑term maintainability, backed by real engineering discipline in testing, review, and accessibility

You might also have

• Background in ads, attribution, billing, or monetization systems
• Infrastructure‑as‑code experience — Kubernetes‑native resource management, Terraform, or service mesh
• Familiarity with OpenTelemetry and distributed tracing in production
• Experience with design systems or configuration‑driven UI frameworks
• Exposure to cross‑team technical alignment or guild‑style quality initiatives

Additional Information

Zone A: $135,400 - $175,900

Zone B: $125,300 - $162,800

Cette fourchette correspond au salaire de base prévu pour ce poste. En plus du salaire de base, ce poste peut donner droit à des attributions d’actions et à une participation à nos programmes d’incitation de l’entreprise, comme des primes annuelles discrétionnaires ou des commissions de vente. Le montant final de l’offre dépendra de plusieurs facteurs, notamment l’emplacement géographique ainsi que l’expérience pertinente, le parcours professionnel et les compétences du/de la candidat(e).

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.

Avantages

Chez Unity, nous voulons que nos membres d’équipe s’épanouissent. Nous offrons un large éventail d’avantages conçus pour soutenir le bien‑être et l’équilibre travail‑vie personnelle.

Veuillez noter: L’admissibilité aux avantages, les offres spécifiques et la couverture varient selon le pays et le statut d’emploi.

Bien que les avantages précis puissent varier, voici certaines des façons dont nous nous efforçons de prendre soin de nos membres d’équipe admissibles à l’échelle mondiale : assurance santé, vie et invalidité complète | Subvention pour les déplacements | Participation des employés à l’actionnariat | Régimes de retraite/pension compétitifs | Vacances et congés personnels généreux | Soutien aux nouveaux parents grâce à des congés et des programmes de soutien aux familles | Collations offertes au bureau | Programmes et soutien en matière de santé mentale et de bien‑être | Groupes‑ressources pour employés | Programme mondial d’aide aux employés | Programmes de formation et de perfectionnement | Programme de bénévolat et de jumelage de dons

La vie chez Unity

Unity [NYSE : U] est le premier moteur de jeu au monde, propulsant les expériences de plus de 3 milliards d’utilisateurs(rices) chaque mois. Les plus grands jeux mobiles, les titres indépendants PC les plus populaires, des jeux console parmi les plus innovants, ainsi que la quasi‑totalité des principales expériences XR et jeux Web sont développés, déployés et optimisés avec Unity.

Unity accompagne également des équipes dans des secteurs tels que l’automobile, l’industrie manufacturière et la santé pour concevoir, simuler et collaborer en 3D - comblant ainsi l’écart entre les idées et la réalité. Pour plus d’informations, veuillez visiter www.unity.com.

Unity est un employeur fier de garantir l’égalité des chances. Nous nous engageons à favoriser un environnement inclusif et innovateur et à célébrer nos employés à travers l’âge, l’éthinicité, la couleur, l’ascendance, l’origine nationale, la religion, le handicap, le sexe, l’identité ou l’expression de genre, l’orientation sexuelle ou tout autre statut protégé conformément à la loi applicable. Si vous êtes en situation de handicap ou avez des besoins spécifiques nécessitant des aménagements pour que votre entretien se déroule dans les meilleures conditions, veuillez remplir ce formulaire afin de nous en informer et que nous puissions faire le nécessaire.

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.

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 www.unity.com.

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.

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.