Sr Software Engineer

Sr Software EngineerCox Automotive is looking for a senior software engineer that applies the principles of secure software engineering to the design, development, maintenance, testing and evaluation of software and cloud infrastructure. Works cross functionally to understand business requirements, architecture and technology direction, evaluate alternative approaches and ensure software and systems are designed accordingly. Incorporates state-of-the-art concepts and practices to facilitate system functionality, scalability, resilience and security as well as ease-of-use (developer / user experience). Applies agile principles to software development with a focus on delivery of business value, collaboration, continuous improvement and sustainability.Visa Sponsorship: Cox Automotive is unable to provide visa sponsorship now or in the future for this position, candidates must be authorized to work in the United States without sponsorship.Required Qualifications:Bachelor's degree in a related discipline and 4 years' experience in a related field; or a different combination, such as a master's degree and 2 years' experience; a Ph.D. and 1 years' experience in a related field; or 12 years' experience in a related field with no degree.Professional experience designing, building, and maintaining production software in a modern object-oriented language (e.g., C#, Java, Kotlin, Go, TypeScript, Python, C++).Strong command of object-oriented design fundamentals — encapsulation, composition, interface design, SOLID, dependency injection, and common design patterns — with the judgment to know when not to apply them.Experience delivering software in a microservice or service-oriented architecture, including defining service boundaries, versioning APIs, and handling distributed failure modes (timeouts, retries, idempotency, partial failure).Experience designing and consuming APIs (or gRPC/GraphQL equivalents), including contract design, backward compatibility, and authentication/authorization patterns.Proficiency with relational databases: schema design, indexing, query tuning, transactions, and managed schema migrations.Experience with asynchronous and message-driven processing using queues, topics, or event streams.Experience building and operating services in a public cloud environment, including containerized workloads.Demonstrated automated testing discipline across unit, integration, and end-to-end layers, with work delivered through a CI/CD pipeline.Proficiency with Git-based workflows and code review as a routine part of delivery — both giving and receiving substantive feedback.Experience with production support and observability: structured logging, metrics, tracing, alerting, and triaging live incidents.Track record of senior-level ownership: taking ambiguous problems through design, implementation, and release; decomposing work for others; and raising engineering standards on a team.Clear written and verbal communication with both engineers and non-technical stakeholders.Experience working in an Agile or iterative delivery model.This role may require participation in a rotating on-call schedule, including support outside of regular business hours.Preferred Qualifications:Comfort with AI-assisted development tooling as part of a normal workflow.Hands-on experience with C# and.NET (modern.NET, ASP.NET Core, Entity Framework Core).Front-end experience with React and TypeScript, including modern component patterns, state management, and component/E2E testing.Production experience with PostgreSQL and/or MySQL.Experience using Redis for caching, distributed locking, or rate limiting, including cache invalidation strategy.AWS experience, particularly ECS/Fargate, RDS, SQS/SNS, S3, Lambda, CloudWatch, and IAM.Infrastructure-as-code experience (Terraform, AWS CDK, or CloudFormation) and Docker.Familiarity with distributed system patterns such as outbox, saga/compensating transactions, eventual consistency, and idempotent consumers.Demonstrated performance and scalability work: profiling, query optimization, caching strategy, or load testing.Experience with feature flags and progressive delivery (canary releases, dark launches, trunk-based development).Familiarity with static analysis, code quality, and dependency/security scanning tooling (e.g., SonarQube, SAST, SCA).Experience modernizing or retiring legacy systems, including incremental migration approaches such as strangler-fig.Experience integrating third-party vendor APIs, including handling vendor migrations.Multi-tenant SaaS experience, especially entitlements, tiered packaging, or role-based access control.Domain experience in two-sided marketplaces, logistics, transportation, or automotive.Experience with resiliency practices such as game days, chaos exercises, or documented runbooks.Experience mentoring engineers or interns, and participating in hiring and interview loops.Drug Testing: To be employed in this role, you'll need to clear a pre-employment drug test. Cox Automotive does not currently administer a pre-employment drug test for marijuana for this position. However, we are a drug-free workplace, so the possession, use or being under the influence of drugs illegal under federal or state law during work hours, on company property and/or in company vehicles is prohibited.Benefits: The Company offers eligible employees the flexibility to take as much vacation with pay as they deem consistent with their duties, the company's needs, and its obligations; seven paid holidays throughout the calendar year; and up to 160 hours of paid wellness annually for their own wellness or that of family members. Employees are also eligible for additional paid time off in the form of bereavement leave, time off to vote, jury duty leave, volunteer time off, military leave, and parental leave.About Us: Through groundbreaking technology and a commitment to stellar experiences for drivers and dealers alike, Cox Automotive employees are transforming the way the world buys, owns, sells – or simply uses – cars. Cox Automotive employees get to work on iconic consumer brands like Autotrader and Kelley Blue Book and industry-leading dealer-facing companies like vAuto and Manheim, all while enjoying the people-centered atmosphere that is central to our life at Cox. Benefits of working at Cox may include health care insurance (medical, dental, vision), retirement planning (401(k)), and paid days off (sick leave, parental leave, flexible vacation/wellness days, and/or PTO). For more details on what benefits you may be offered, visit our benefits page. Cox is an Equal Employment Opportunity employer – All qualified applicants/employees will receive consideration for employment without regard to that individual's age, race, color, religion or creed, national origin or ancestry, sex (including pregnancy), sexual orientation, gender, gender identity, physical or mental disability, veteran status, genetic information, ethnicity, citizenship, or any other characteristic protected by law. Cox provides reasonable accommodations when requested by a qualified applicant or employee with disability, unless such accommodations would cause an undue hardship. EOE, including disability/vets