Backend Engineer

• Design, implement, and operate our ads delivery infrastructure and services.
• Own critical serving-time systems and business logic that enable reliable, scalable, and efficient ad delivery.
• Partner closely with Product, Data Science, ML, and Infrastructure teams to translate product vision into scalable technical solutions, driving end-to-end execution from concept to launch and ongoing optimization.
• Design, test, debug, and maintain high-quality production systems, leveraging observability, experimentation, and automation to ensure robust and resilient services.
• Champion best practices in distributed systems, availability, scalability, operational excellence, security, and infrastructure efficiency while helping evolve the long-term architecture of the ads delivery platform.
• Utilize AI tools and high velocity engineering workflows to design and ship scalable services while upholding rigorous standards for code correctness, security, and production ready quality code.

Software Engineer, Backend, Level 5 – Ads Delivery

• Design, develop, and maintain robust, scalable, and high-performance object oriented code in our backend services.
• Develop public REST APIs using Java and internal gRPC APIs for inter-service and inter-system communication.
• Craft systems designs, lead design decisions, and drive alignment with other senior engineers.
• Write automated unit tests, integration tests, end-to-end tests, concurrency tests, load/performance tests.
• Analyze existing systems to identify bottlenecks, tech debt, and implement scalability, and stability improvements.
• Implement automation for testing, monitoring, healing, and scaling applications, continuous integration and deployment to reduce time to market.
• Collaborate with cross-functional teams, including product managers, designers, and other engineers, to define and implement new features.
• Conduct code reviews (comment, approve, seek revisions, merge), mentor junior and mid-level engineers, and actively promote engineering best practices.
• Dive deep and troubleshoot complex issues, devise fixes, author root cause analysis documents, and ensure lasting performance and reliability.
• Conduct objective and comparative analyses of competing technologies to advise the team of pros and cons of a technology solution.
• Maintain robust documentation (design docs, run books, change management docs, and readiness plans).
• Provide live-site support for production applications by monitoring systems, ensuring rapid incident resolution, and driving continuous improvement.
• Drive cross-team projects as a single-threaded-owner (STO) or tech lead, and actively unblock other engineers to make progress.

Senior Backend Engineer – AI Platform

• With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.
• You will support your peers and stakeholders in the product development lifecycle by collaborating across engineering, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
• You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
• You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

Software Engineer II, Backend – ML Training, Serving

• Contribute to the design and implementation of large-scale backend applications.
• Ensure code quality and support your teammates in maintaining strong engineering standards.
• Build reliable and fault-tolerant systems using message queues (RabbitMQ, Kafka, etc.) and implement best practices for scalability and resilience.
• Improve system scalability, reliability, and architectural clarity through thoughtful design and optimization.

Senior Software Engineer – Java

• Implement cutting-edge applications using programming languages and tools to create functional and efficient software.
• Analyze user requirements to develop robust and efficient software solutions.
• Monitor the performance of the system and addressing issues that arise in production.
• Provide comprehensive technical documentation to support users and developers.
• Stay current regarding engineering productivity tools.

Software Engineer, Java

• Build and evolve cloud-based systems to flawlessly manage and distribute configuration information to a fleet of millions of endpoints, collaborating with other cloud, front-end, and endpoint developers
• Brainstorm, design, and build collaboratively with members across multiple teams
• Build elegant and performant solutions for complex technical problems in Go
• Read and critique code in the multiple programming languages in use in our environment (including Go, Python, Unix shell, Typescript, C++, among others), and provide technical guidance and feedback to team members
• Focus on continual learning, raising the bar for both yourself and your teammates
• Leverage our understanding of engineering best practices, including topics like appropriate testing paradigms, effective peer code reviews, logging, and resilient architecture patterns, to ensure that our code is clean
• Be an energetic ‘self-starter’ with the ability to take ownership and be accountable for deliverables, both individually and when leading a team
• Deliver and accept feedback with grace and courtesy
• Collaborate on determining root causes of production outages and adding quality improvements to prevent outages in the future

Senior Engineer, Backend/Cloud – Policy

• Lead the end‑to‑end architecture and development of full‑stack applications on AWS, ensuring scalability, security, and operational excellence.
• Design, develop, and optimize back‑end services, APIs, and automation using Python and cloud‑native patterns.
• Build intuitive, responsive, and visually polished user interfaces using React and modern front‑end frameworks.
• Integrate and operationalize agentic AI workflows, GenAI tooling, and LLM‑based systems into core platform capabilities.
• Provide architectural guidance and technical leadership across engineering teams, driving alignment and high‑quality implementation.
• Contribute to a fast‑paced environment by iterating quickly, experimenting with new technologies, and pushing innovation forward.

Senior Full Stack Engineer, Python, AWS, GenAI

• Design, develop, test, and manage application development projects in support of enterprise IT infrastructure and services.
• Integrate third‑party components programmatically and introduce new custom capabilities to meet evolving functional and non‑functional requirements.
• Maintain and enhance existing applications by modifying code, improving performance, and refactoring for scalability, reliability, and maintainability.
• Identify, recommend, and implement process improvements; design and develop automation for operations and maintenance tasks to increase efficiency and reduce manual effort.
• Translate functional and technical requirements into robust, scalable software designs under the direction and guidance of lead architects.
• Design and implement solutions for large‑scale data processing, computationally intensive statistical modeling, and advanced analytics workloads.
• Participate in all aspects of the SDLC, including backlog refinement, sprint planning, requirements analysis, design, development, unit and integration testing, deployment, and ongoing quality assurance.
• Conduct and contribute to technical project milestone reviews, code and architecture review sessions, and technical design walkthroughs.
• Assist with effort and resource estimation for development tasks and projects; support planning and tracking of development activities.
• Apply and promote software development best practices, including secure coding standards, code reviews, automated testing, and continuous integration/continuous delivery (CI/CD).
• Prepare and maintain technical documentation (design specifications, interface control documents, deployment guides, and user/operations manuals).
• Collaborate effectively with cross‑functional teams including architects, business analysts, data engineers, testers, and operations staff to deliver high‑quality solutions.
• Mentor and provide knowledge transfer to junior developers and other team members through code reviews, pair programming, and technical presentations.
• Other duties as assigned.

.NET Full Stack Developer, Senior

• The Senior .NET Full Stack Developer will be responsible for the design, development, testing, and management of application development projects in support of IT infrastructure.
• This includes programmatic integration of third-party components, introduction of new custom capabilities, modification of existing code, process improvement recommendations, and automation of operations and maintenance tasks.
• Develop and implement technical efforts to design, build, and deploy applications under the direction of lead architects, including large-scale data processing, computationally intensive statistical modeling, and advanced analytics.
• Participate in all aspects of the software development life cycle for all solutions, including planning, requirements, development, testing, and quality assurance.
• Conduct technical project milestone reviews, code architecture sessions, resource estimation, and development best practices knowledge transfer.

Senior .NET Full Stack Developer

Staff Software Engineer, AI – Backend

• Contribute to innovative technology solutions that meet business needs for today and tomorrow
• Help translate business requirements into scalable, user-centric technology designs for Aritzia
• Contribute to the development, configuration, and integration of solutions to ensure the solution design intent is realized and works seamlessly with existing systems and infrastructure
• Implement structured testing that ensures functionality and identify and address deficiencies
• Launch and proactively maintain technology solutions, collaborating with teammates to improve development processes

Senior Backend Developer

• Design, implement, and operate our most critical and scalable services - ranging from user identity services, friend graph, and our core persistence layer
• Work across teams to understand product requirements, evaluate trade-offs, and deliver the solutions needed to build innovative products
• Evaluate, appropriately test, and debug your work, striving for high quality
• Advocate for and apply best practices when it comes to availability, scalability, operational excellence, and cost management
• Utilize AI tools and high velocity engineering workflows to design and ship scalable services while upholding rigorous standards for code correctness, security, and production ready quality code

Software Engineer, Backend – Level 5

• You will work on cross-functional teams to build scalable systems for our government -- designing, implementing, and delivering services that millions of Americans depend on.
• You care deeply about working on technology that improves people’s lives, but don’t think technology is always the answer.
• You are passionate about building large-scale systems that are inclusive, well-designed, fast, scalable, and secure, and you'll help set high standards for our teams in terms of simplicity, empathy, and accessibility.
• The Sr. Software Engineer role will be responsible for developing end to end systems for one of Nava's major government partners.
• The objective is to modernize an existing legacy enterprise platform to enable users to have more access to the programs and services that they need.
• This individual will be involved in everything, from strategy and planning through to post-production testing and support.

Software Engineer – Backend, Java

• Lead projects from requirements gathering through implementation
• Contribute to and influence the evolution of overall system architecture
• Collaborate with engineering and cross-functional partners to define and ship new features
• Apply your passion for user experience and technical expertise
• Set the standard for quality and technical excellence through code and design reviews
• Offering and soliciting direct constructive feedback

Senior Software Engineer, Backend

• Design, implement, and operate our most critical and scalable services
• Work across teams to understand product requirements, evaluate trade-offs, and deliver the solutions needed to build innovative products
• Evaluate, appropriately test, and debug your work, striving for high quality
• Advocate for and apply best practices when it comes to availability, scalability, operational excellence, and cost management
• Utilize AI tools and high velocity engineering workflows to design and ship scalable services

Software Engineer – Backend, Level 4

Software Engineer, Backend – Level 4

• Scope, design, and build scalable, resilient distributed systems
• Engage in cross-functional collaboration throughout the entire software lifecycle
• Participate in design sessions and code reviews with peers to elevate the quality of engineering across the organization
• Utilize programming languages like C#, Java or other object-oriented languages, SQL, and NoSQL databases, Container Orchestration services including Docker and Kubernetes, and a variety of Azure tools and services
• Consistently share best practices and improve processes within and across teams
• Build product definition and leverage your technical skills to drive towards the right solution
• Analysis and Estimation skills

Senior Software Engineer – .NET/Java

• Lead the design and development of API infrastructure and backend services that power our platform ecosystem
• Architect and implement our API Gateway initiative, enabling secure and efficient connectivity for teams across Blue Origin
• Write high-quality, efficient, and maintainable code in languages such as Java, Python, Go, and C++
• Design and build resilient, scalable microservices and backend systems that support organizational growth
• Implement robust API design patterns, versioning strategies, and documentation to ensure platform usability
• Champion operational excellence through monitoring, observability, and reliability practices; maintain high system uptime
• Lead technical design reviews across the organization, building repeatable processes and standards for backend systems
• Drive continuous improvement of platform infrastructure and deployment pipelines
• Architect and scale AI/ML-capable backend services and infrastructure to support emerging organizational needs
• Mentor junior and mid-level software developers and contribute to team technical excellence

Senior Backend Software Engineer – Supply Chain, Operations

• Contribute to the design and development of API infrastructure and backend services that power our platform ecosystem
• Write high-quality, efficient, and maintainable code in languages such as Java, Python, Go, and C++
• Build backend systems and microservices under guidance from senior engineers
• Implement API design patterns, versioning strategies, and documentation to support platform usability
• Participate in monitoring and observability practices to maintain system reliability
• Assist with technical design reviews and learn standards for backend systems
• Support continuous improvement of platform infrastructure and deployment pipelines
• Collaborate with team members to resolve technical challenges and improve code quality

Backend Software Engineer II – Supply Chain, Operations

• Design and develop API infrastructure and backend services that power our platform ecosystem
• Lead development of scalable microservices and backend systems that support organizational growth
• Write high-quality, efficient, and maintainable code in languages such as Java, Python, Go, and C++
• Architect and implement resilient backend services with robust API design patterns, versioning strategies, and documentation
• Implement monitoring and observability practices to maintain system uptime and reliability
• Lead technical design reviews for backend systems, building repeatable processes and standards
• Support continuous improvement of platform infrastructure and deployment pipelines
• Provide mentorship to junior developers and contribute to team knowledge sharing
• Collaborate cross-functionally to deliver platform solutions that enable organizational success

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