Fullstack Developer (Backend & DevOps) at mila-2 | Montreal

Join Our TeamBecome a pivotal part of the team that designs and evolves the Unity Package Manager ecosystem—a backbone that empowers millions of creators to discover, share, and integrate extensions that enhance their workflows. Collaborate with multiple teams within Unity to design and deliver robust backend services and integrations within the Unity editor that support the creation and use of packages on a global scale.In the initial months, your success will be measured by delivering enhancements to service functionalities, contributing to key features of the package manager and its integration within the Unity editor, and elevating code quality through testing and reviews. In the long run, you will help define the next generation of ecosystem management for Unity.Your impact will be felt directly by internal teams and external creators by making package development faster, safer, and more reliable.This role offers the opportunity to work with multiple programming languages (Node.js/C#/C++), tackle large-scale distributed systems challenges, mentor peers, and set standards for developer experience within a widely used platform.

Exciting OpportunityWe are on the lookout for a Senior SDK Developer who will serve as an individual contributor on our iOS SDK, taking ownership of features or subsystems from conception through implementation and maintenance.This role presents the chance to work at the compelling intersection of SDK development, machine learning, and data infrastructure. Join us in crafting innovative solutions that elevate advertising technology, impacting billions of advertising experiences globally while ensuring privacy protection and compliance.Your ResponsibilitiesAct as a senior individual contributor on the iOS SDK, managing features or subsystems end-to-end, from design to implementation and maintenance.Contribute to the development and evolution of the iOS SDK architecture in alignment with platform guidelines.Implement reliable and performant components of the iOS SDK, with a focus on multithreading, lifecycle management, and the safety of the main execution thread.Identify and rectify production failures, performance issues, and regressions, while helping to enhance overall SDK stability.Proactively improve existing code, abstractions, and development practices to enhance maintainability and reliability.Exercise sound technical judgment to balance correctness, performance, and delivery timelines.Collaborate closely with Android developers, backend teams, product managers, and quality assurance to ensure consistent SDK behavior and secure integrations.Participate in design and code reviews, provide thoughtful feedback, and contribute to elevating the overall quality of development within the team.

OpportunityThe Manager of Operations and Ecosystem for the Skills Development Programs (SDP) is responsible for the operational infrastructure, impact measurement, and long-term community lifecycle strategy for all SDP initiatives.This role is designed for an individual who sees a well-intentioned program and immediately identifies the missing infrastructure: tracking systems, reporting frameworks, and graduate and community engagement strategies that would make it ten times more effective. You will be tasked with building this framework here, collaborating with sales, customer success, and training teams to ensure our skills development programs remain valuable experiences for learners long after completion.While supporting client delivery during active contracts, your primary focus will be on establishing the internal systems, reporting frameworks, and community mechanisms required to ensure sustainable program impact.Your ResponsibilitiesBuild and manage the operational infrastructure of the Skills Development Programs (SDP), including learner tracking systems, scalable workflows, and program processes.Define, track, and present program impacts by creating dashboards and reporting frameworks to measure outcomes such as enrollment, completion, certification, and employment pathways.Establish and manage the long-term ecosystem of learners, including alumni communities, engagement initiatives, mentorship opportunities, and talent network growth.Implement and optimize CRM and automation systems to manage learner and partner lifecycle data, streamline reporting, and enhance operational efficiency.Coordinate program delivery and cross-functional collaboration during active contracts, working with Sales, Customer Success, Marketing, and Training teams to ensure programs meet defined KPIs and generate measurable impact.

Opportunity We are seeking a talented Senior Full-Stack Developer to lead the next generation of advertising experiences within the Ad Unit team. The successful candidate will drive innovation in ad units—from dynamic displays to interactive endcards and new advertising journeys that enhance user experiences and optimize monetization revenue. This role blends concrete technical design with strategic leadership. You will work across Android, iOS, WebView, and backend services to design, experiment, and scale advertising formats delivered to billions of devices worldwide. If you enjoy working at the intersection of front-end performance, creative experimentation, and full-stack system design, this is your chance to shape how millions of users engage with ads via Unity. Your Responsibilities Design and implement innovative ad unit formats and journeys—including dynamic displays, interactive components, and seamless integrated advertising experiences. Rapidly prototype and experiment, collaborating with PMs, BI, and Data Science to validate hypotheses and measure impact through A/B testing. Design and deliver full-stack solutions linking SDK surfaces to backend services for ad delivery and configuration. Define and drive the innovation roadmap for ad formats—identifying opportunities, setting technical direction, and quantifying business impact. Mentor and support developers on Android, iOS, and WebView platforms, fostering best development practices and a culture of experimentation. Collaborate with backend and Gateway teams to enhance ad rendering pipelines, caching strategies, and performance throughout the lifecycle. Assume responsibility for feature metrics such as load time, display rate, CTR, and revenue growth, ensuring performance post-deployments. Contribute to the architecture of the Bold SDK, helping to establish a modular and extensible foundation for future innovations in ad formats.

Join Our TeamYou are driven by the challenge of developing innovative solutions in the gaming industry? Do you thrive in a collaborative and dynamic environment? We are looking for a highly skilled Senior Full-Stack Developer to join our dedicated team focused on creating dashboards for game publishers using Unity Ads!In this pivotal role, you will be instrumental in the development and maintenance of Unity Ads dashboards. You will design and implement robust, scalable, and secure software systems while collaborating with cross-functional teams to identify needs and continuously improve the performance and reliability of our products. Our new Vector platform has seen remarkable success, and you will directly contribute to sustaining this momentum.Your ResponsibilitiesDevelop complex dashboard experiences that transform multidimensional data into clear, reliable, and actionable workflows for users.Manage front-end features from inception to production, closely collaborating with Product and Design teams to shape requirements, UX decisions, and execution plans.Work with Product teams to create intuitive interactions in the dashboards and manage their functionalities based on user needs and indicators.Design and develop shared UI components, patterns, and interaction models to be used across various dashboard interfaces.Collaborate with engineers from different dashboard teams to review designs and code, promoting consistency, performance, and maintainability.Lead the implementation of data-driven user interfaces, ensuring that front-end data models are resilient to changes and edge cases.Identify UX, performance, and reliability issues through hands-on investigations, metrics, and user feedback, and implement improvements until resolution.Participate in front-end architecture decisions, balancing rapid execution with long-term usability and extensibility.

ABOUT YOUWe are seeking a skilled Senior Backend Developer with a strong background in PHP and Go to enhance our Monetization platforms. You will be integral in developing new microservices and refining existing legacy PHP systems, focusing on boosting stability, performance, and overall architecture.ABOUT USAt Xsolla, we are a leading global commerce company dedicated to empowering game developers with innovative tools and services tailored to tackle the unique challenges of the video game industry. Our partners range from indie developers to AAA studios, all leveraging Xsolla's expertise to fund, distribute, market, and maximize their game monetization efforts. We firmly believe in the future of video games and are committed to uniting opportunities and continuously providing new resources for creators. Headquartered in Los Angeles, California, Xsolla serves as the merchant of record for over 1,500 game developers, enabling them to reach a wider audience and achieve substantial growth in their businesses worldwide. With diverse avenues for revenue and success, we equip developers with all the necessary resources to thrive.For more details, visit xsolla.com.

About Stay22At Stay22, we are transforming the way people convert online. Our AI-powered affiliate platform empowers publishers, ticketing platforms, and content creators to unlock new revenue streams while enhancing the user experience for their audiences. At Stay22, our partners not only earn more but also provide greater value. Join us in being part of something significant that is reshaping the world of affiliate marketing.Job SummaryAs a Senior Backend Developer at Stay22, you will play a crucial role in ensuring the robustness, scalability, and performance of the core systems that drive our business. You will design and build high-throughput APIs, manage complex data pipelines, and ensure our infrastructure is capable of handling millions of requests with low latency.You will act as a technical leader, driving large-scale backend initiatives from architectural design to deployment and monitoring. You will work with diverse data sources, optimize database interactions, and help evolve our microservices architecture. This role requires a deep understanding of distributed systems, a focus on reliability, and a passion for mentoring others toward backend engineering excellence.Key ResponsibilitiesSystem Architecture and DevelopmentDesign, build, and maintain scalable APIs and backend services using Python and/or Node.js/TypeScript.Develop efficient data processing pipelines to manage the ingestion, normalization, and storage of massive datasets from various external sources.Optimize database performance (PostgreSQL, MongoDB, Redis) by crafting schemas and queries that remain efficient at scale.Reliability and OperationsTake ownership of system reliability by implementing comprehensive observability (logs, metrics, tracing) to ensure high availability.

About Stay22At Stay22, we are redefining how individuals convert online. Our AI-powered affiliate platform empowers publishers, ticketing platforms, and content creators to unlock new revenue streams while enhancing user experience for their audiences. At Stay22, our partners don't just earn more; they also provide more. Join us to be part of something significant that is transforming the affiliate landscape.Job OverviewAs a Senior Backend Developer within Stay22's Neuro Team, you will be pivotal in designing and developing robust backend systems that underpin our AI/ML infrastructure. The Neuro team's mission is to create, develop, and maintain our Roam and Spark engines—our machine learning-based redirection and affiliate link systems—along with associated services such as ML pipelines, model hosting, and LLM gateways.In this role, your focus will be on the AI/ML infrastructure (with model training managed by our ML engineers), ensuring seamless data flow in the pipelines and the reliability of inference services. You will support Stay22's Roam and Spark AI products by developing scalable backend APIs and services for real-time inference and analytics, while also creating APIs and tools that facilitate rapid AI experimentation at the enterprise level.Key ResponsibilitiesDesign, develop, and maintain end-to-end AI/ML pipelines and services, from data preparation to model deployment and real-time inference engines, to support Stay22's AI products.Develop the backend and APIs for the Roam (ML-based redirection) and Spark (AI-based affiliate links) engines, ensuring scalability, performance, and reliability.Create and maintain internal client/gateway layers for large language models (LLM), enabling product teams to leverage these models for functionalities such as content suggestion and classification.Collaborate with the ML engineering team to integrate trained models into production services and with the Data team to optimize the pipelines feeding the models.Work with the Forge/platform team to set up and maintain cloud infrastructure (GCP), ensuring high availability and performance.

Join Our TeamAre you passionate about shaping the future of multiplayer gaming? At Unity Technologies, we are tackling the intricate challenges of multiplayer game development. Our team is dedicated to striking the perfect balance between performance, flexibility, and usability, pushing the boundaries of creativity in multiplayer games.As part of our team, you will contribute to the development of Unity Multiplayer's core authoring flows while integrating essential gaming services directly into the Unity Editor. Help us make multiplayer game creation simpler and more innovative.We are seeking a skilled Senior Software Developer to significantly enhance the multiplayer service experience within Unity.In this role, you will have the autonomy to lead initiatives that improve the onboarding process, drastically reduce iteration times, and ensure high-level performance at scale for millions of users. Join us in defining and paving the way for the next generation of multiplayer game development!

Exciting OpportunityAt Valtech, you will discover a nurturing environment that promotes continuous learning, tangible impact, and professional growth. Whether you're developing innovative digital solutions, challenging conventional ideas, or crafting the next generation of customer experiences, your contributions will be pivotal in transforming various industries.We take pride in:Our commitment to innovationOur core values: « share, dare, care »A company culture that fosters collaboration and innovation

Unity Technologies is seeking a Senior SDK Developer focused on Monetization to join the team in Montreal, Canada. This position centers on improving Unity’s SDK products to better support developers and contribute to revenue growth. Role overview The Senior SDK Developer will work with teams across engineering, product, and design to create and refine monetization features. The goal is to deliver SDK solutions that help developers engage users and increase profitability for their applications. What you will do Enhance Unity’s SDK offerings with new and improved monetization capabilities Collaborate with cross-functional groups to design and implement monetization strategies Ensure SDKs align with developer needs and support business objectives Requirements Experience developing SDKs or similar technical products Proven ability to work with multiple teams to deliver features Strong understanding of monetization strategies and user engagement

About the RoleWe are seeking two highly skilled backend engineers to become integral members of our dynamic team in Montreal and Berlin. In this role, you will be instrumental in enhancing our technological capabilities by significantly improving our core backend functionalities, thereby enabling other teams to efficiently utilize this backend.If you are enthusiastic about creating exceptional products, thrive in a fast-paced environment, and are eager to contribute to the growth of an ambitious startup, then this opportunity is tailor-made for you.Our Technology Stack:Python / FastAPIPostgreSQL / MongoDB / ElasticCloud LLM providers + bare metal GPUsGoogle Cloud Platform (GCP)Joining us as an early team member means assuming significant responsibilities from the outset, with the chance to influence our foundational technological stack and infrastructure.As part of one of the most forward-thinking AI companies today, you will collaborate with a talented team of colleagues who are leaders in their respective domains, creating an incredibly stimulating work environment. Your ResponsibilitiesOwn the delivery of complex projects, collaborating with cross-functional teams to ensure the timely completion of mission-critical components.Gain a comprehensive understanding of Reliant's overarching vision and incorporate this into your architectural and process decisions.Provide insightful feedback to refine UI/UX concepts and assist in planning backend and infrastructure enhancements.Take proactive steps to maintain long-term code quality and architectural integrity. QualificationsWe are looking for a candidate with a proven track record in backend or full-stack development, with a focus on rapid innovation and effective systems design to facilitate scalability for both opportunities and team growth.You will excel in this position if you possess the following skills and experiences:5+ years of demonstrable experience in building backend services or distributed systems.Experience in designing, building, testing, and maintaining backend services and APIs that support product features, including the ability to write robust, production-quality code.Engage in system and service design; contribute to architectural discussions and make informed decisions regarding scalability, latency, cost, and reliability.Ability to navigate ambiguity and translate high-level requirements into actionable implementation plans.Collaborate with cross-functional partners including product management, frontend, UX, data, and operations to define requirements, plan implementations, and deliver features.Ensure code quality through writing, reviewing, and enhancing unit/integration tests.

Join Our TeamAt Unity Technologies, we believe that the world improves when there are more creators. Be a part of our Docs team and help empower creators! In this role, you will gain a deep technical understanding of Unity's products by collaborating closely with development teams and engaging with the technologies. You will leverage this knowledge along with your writing skills to produce content that both informs and inspires. Collaboration with fellow writers will be essential to ensure a cohesive content experience across our products, establish style guidelines, and enhance the overall quality of documentation at Unity. Your Responsibilities Develop comprehensive technical content sets (user and developer guides, API references, SDK documentation, code samples) for various products and features. Work alongside product managers and developers to understand the underlying technology of each feature, the target audience, and documentation requirements. Collaborate with team members to ensure that documentation is clear, concise, accurate, and user-friendly. Advocate for user needs during feature development to improve workflows and enhance product usability. Qualifications We Seek Exceptional written and verbal communication skills. A strong technical understanding and hands-on experience with software development concepts and workflows. Ability to translate complex technical concepts into clear, user-focused documentation. Proven track record of delivering high-quality content in a fast-paced software development environment. Effective time management and the ability to work within a globally distributed team while maintaining active communication with colleagues across different time zones. Preferred Qualifications Experience with object-oriented programming languages, game development, digital art creation, or real-time 3D development. Familiarity with version control software such as Git or Subversion for managing documentation changes.

ABOUT USAt Xsolla, we are a leading global commerce company dedicated to providing innovative tools and services that empower game developers to tackle the unique challenges of the gaming industry. From indie projects to AAA titles, we partner with developers to support them in funding, distributing, marketing, and monetizing their games. Our commitment to the future of gaming drives us to create new opportunities and resources for creators. Headquartered in Los Angeles, California, we proudly serve over 1,500 game developers worldwide, helping them expand their audience and grow their businesses. With a focus on profitability and success, we equip developers with everything they need to thrive in the gaming landscape.For more details, visit xsolla.com.ABOUT YOUWe are seeking a Senior Backend Engineer who is meticulous, proactive, and collaborative to be a vital part of our Engineering team. The ideal candidate will thrive in a fast-paced and dynamic environment, eager to design and develop scalable backend systems, enhance architectural frameworks, and provide resilient, high-performance services for production.To succeed in this role, you must possess strong technical skills in Go, distributed systems, and microservices architecture, along with experience in developing and managing cloud-native applications in containerized settings using Docker and Kubernetes. Your ability to diagnose complex production issues, optimize system performance, and manage event-driven architectures utilizing Kafka or similar platforms will be crucial.If you are passionate about building dependable, scalable systems that support impactful products and enjoy creating seamless infrastructures that facilitate innovative payment, gaming, or commerce experiences, we would love to connect with you!

***English version below***Travel transcends destinations; it is woven from the memories created along the way. At Plusgrade, we are committed to redefining the future of travel by partnering with over 250 airlines, hotels, cruise lines, rail networks, and financial services to create meaningful new revenue streams through exceptional customer experiences. Grounded in our core values of ambition, innovation, and collaboration, we are continuously driven to push boundaries, exceed expectations, and harness the best of everyone. We cultivate a culture that believes our strength lies in our unity, working together to build an extraordinary future in the travel industry. Join us in transforming everyday journeys into truly remarkable experiences.ABOUT THE POSITIONAs a Machine Learning Engineer within the ML Applications team, you will be responsible for designing, developing, and deploying innovative machine learning platform solutions to tackle complex business challenges. This role requires a strong software development background, a keen interest in cutting-edge technologies, excellent problem-solving skills, and the ability to work both independently and collaboratively in a fast-paced environment.This position reports to the Director of ML Applications.YOUR RESPONSIBILITIES:• Collaborate within a small team passionate about scaling the use of ML applications across the organization.• Productionize, scale, and commercialize state-of-the-art machine learning solutions.• Design and develop scalable and robust ML pipelines to enable predictive data usage by downstream applications, enhancing key performance indicators (KPIs) such as member engagement and revenue.• Create and implement robust processes for monitoring production ML pipelines.• Support production systems to deliver batch and real-time model predictions to all applications.• Actively participate in solution design and modeling to ensure ML products are developed according to best practices, standards, and ML architecture principles.• Work closely with our product, engineering, and marketing teams to develop data and ML solutions that address critical business questions.

The OpportunityAt Unity, we believe the world benefits from more creators. We develop tools that empower artists, developers, and studios to bring their visions to life - in gaming, film, visual effects, animation, and immersive experiences. We are seeking a Software Development Manager to lead the teams behind SyncSketch and SpeedTree, two products pivotal to creative production workflows. SyncSketch enables teams to collaborate and review creations at scale, while SpeedTree offers cutting-edge vegetation modeling solutions utilized in film, visual effects, and interactive content. In this role, you will guide a team of talented developers, enhance execution through agile methodologies, and collaborate closely with Product, Sales, Solutions Architects, and clients to define the roadmap. You will also act as a coach and mentor, assisting your team in skill development, amplifying their impact, and fostering meaningful careers at Unity. This is an excellent opportunity for a leader driven by building high-performing teams, enhancing development efficiency, and designing products that genuinely matter to creative professionals.

Join Us at UnityUnity Pipeline is a groundbreaking initiative poised to dramatically reshape the creation of real-time 3D experiences.By decoupling the interaction with the Unity Pipeline from the Unity Editor, we are evolving Unity from a standalone application to an open, cloud-based ecosystem. This is an extraordinary opportunity to build the backbone of modern game production and industrial content, empowering teams to seamlessly access, modify, version, and deploy content.You will be at the forefront of this transformation, taking charge of the highly critical storage abstraction layer to ensure that large studios have the flexibility, robust security, and strict data localization controls necessary to protect their intellectual property.

Join the Revolution in Game DevelopmentAt Unity, we are at the forefront of real-time 3D innovation, leveraging AI to transform the way games are designed and experienced. From intelligent creation tools to novel ways of interacting with content, we are building the next generation of AI-assisted pipelines that enable faster, more immersive, and efficient 3D game development.We are seeking a Senior Technical Artist to join our Unity AI Authoring team. In this dynamic role, you will design and develop workflows, pipelines, test project environments, and AI-powered tools that will redefine how games are conceptualized, prototyped, and launched.If you are passionate about merging artistic creativity with technical problem-solving and eager to push the boundaries of AI-assisted game creation, we would love to meet you!

Join Our TeamAre you a visionary DevOps Engineer passionate about modern infrastructure, automation, Infrastructure as Code (IaC), and advanced CI/CD practices? At Unity Technologies, you will play a pivotal role within our IT Engineering team, contributing to the evolution of our global multi-cloud environment.This position involves designing and managing highly available containerized solutions, with a strong emphasis on Kubernetes (particularly GKE), as well as integrating AI tools to enhance efficiency. Your expertise will directly influence the dynamic IT infrastructure that enables Unity’s engineering teams to create innovative software used by millions of developers worldwide. You will be part of a high-performing team spread across multiple regions, dedicated to continuous innovation and automation of our systems while upholding high standards of excellence.If you are eager to roll up your sleeves and embrace new challenges within a renowned global company, we want to meet you!