Lead Engineer

Job Description: Who We Are: We’re Cart.com, one of the fastest growing commerce enablement companies in the world. We provide the digital and physical infrastructure that empowers thousands of leading B2C, B2B and public sector organizations to unify commerce operations from product discovery to product delivery. We’re building toward a world where commerce has no bounds. Our enterprise-grade software, services and logistics infrastructure, including our own network of omnichannel fulfillment and distribution centers, enable merchants to navigate an increasingly complex operating landscape and drive efficient growth. Our goal is to be the global backbone of commerce. To achieve it, we’re looking for entrepreneurial, innovative and determined teammates who are eager to help our growing base of customers simplify their commerce operations and seamlessly reach their own customers, wherever they are. Sound like you? We’d love to hear from you. Cart.com Fast Facts: 6,000+ customers worldwide 1,600+ employees globally 17 warehouses nationwide, totaling over 10 million square feet of space Headquartered in Houston, TX with international offices in Mexico and Poland Our values: Cart.com is building a company that is committed to living out these 6 core values: Be brand obsessed: Our lives are shaped by the brands we interact with daily. We obsess over the brands we serve, and about the things they care about. Think beyond the box: “We’ve always done it that way” is not a phrase uttered often at our office. We create creative solutions to complex problems. Don’t give up: We learn from our challenges and see them for what they are; great building blocks to an amazing brand story. Speak up: We communicate clearly and directly because we care deeply. Communication is the bedrock of our community. Work together: We’ve built a team that prides itself on diversity of thought and background. Collaboration is better with contrast. Remember to be human: We work hard, but we leave room for the people, places and things that we love. Remote: This position is open to applicants or individuals who are located in or willing to move to AZ, CA,CO, CT,DE,FL, GA, HI, IL, IN, KY, MD, MA, MI, MS, NE, NV, NJ, NY, NC,OH, OR, PA, SC, TN, TX, UT, VA, WA. The Role: Cart.com’s WMS-Core team is seeking a Lead Engineer to design, develop, and optimize our WMS Core technology solutions. You will play a key role in building and maintaining scalable software that powers the core WMS capability and also Automation integration of third-party vendors like PTL, INVATA, Locus etc. As a Lead engineer, you will collaborate cross-functionally to drive technical initiatives, improve system performance, and mentor junior engineers. What You’ll Do: Own the architecture and design direction for the services the team ships, and write the design docs that get the team aligned before code starts. Review pull requests daily. Use review as the main channel for raising the team's standards, not as a rubber stamp. Mentor engineers through pairing, design feedback and walking them through production investigations. Act as subject matter expert for warehouse Core and automation systems, for both engineering peers and warehouse operations. Break operational problems into scoped, sequenced work with product and the engineering Leaders. Maintain CI/CD pipelines and release mechanics so deployments stay routine and low touch. Lead production investigations. Find the root cause, ship the fix and close the gap that let it through. Support releases across multiple fulfillment centers with no disruption to daily operations. Prepare for peak season through load testing, capacity planning and clear escalation paths. Who You Are: A problem-solver who thrives in a fast-paced, ambiguous environment. Detail-oriented with strong analytical and debugging skills. Passionate about building high-performing, scalable software. A strong communicator and collaborator, comfortable working across teams. Adaptable and eager to learn new technologies and approaches. What You’ve Done: 10 or more years writing production software, with recent hands-on time in the codebase. Demonstrated technical leadership of a team, whether as tech lead, staff engineer or a manager who kept coding. Deep production experience with C#, Python, Java , .NET Core, and with microservice architectures at scale. Working knowledge of event streaming and messaging with Kafka, RabbitMQ or an equivalent platform. Experience with both relational and document databases, for example SQL Server, Oracle, MySQL and MongoDB, Postgres Hands-on ownership of CI/CD pipelines, branching strategy and release mechanics. Strong testing instincts, including test strategy, automation frameworks and code review practice. Track record supporting production systems that operations teams depend on during business hours and peak periods. Nice to Haves: Direct experience with warehouse management systems, fulfillment operations or parcel logistics. Experience integrating warehouse automation equipment such as sort-to-light systems, conveyor controls or scanning devices. Experience building or supporting mobile and handheld applications used by warehouse operators. Experience working alongside distributed or offshore teams across time zones. Cloud experience on AWS, with container orchestration in Kubernetes or Rancher. Familiarity with observability tooling such as Kibana, SumoLogic or comparable platforms. Experience owning a product end to end, including taking user feedback straight into the roadmap. Physical Demands & Working Conditions: Currently, Cart.com does not intend to hire candidates who will need, now or in the future, Cart.com sponsorship through any non-immigrant visa category such as the H-1B, H-1B1, E-3, O-1, or TN. All hiring is contingent on eligibility to work in the United States. We are unable to sponsor or transfer visas for applicants. Eligibility Requirement: This position is open only to U.S. citizens due to applicable federal requirements. By applying, you confirm that you are a U.S. citizen and can provide acceptable documentation verifying your status if selected. If you are not a U.S. citizen, please do not apply for this role. Must Have Tech Skills: Languages: C#, JavaScript, Node.js, Python, PowerShell, Java, SQL Frameworks: .NET Core, .NET Framework, ASP.NET, Angular etc. ORM frameworks. Data: SQL Server, MongoDB, Redis, Oracle, MySQL, postgreSQL Messaging: Kafka, RabbitMQ, Hangfire, enterprise service bus patterns Infrastructure: AWS, Docker, Kubernetes, Rancher etc. Testing: xUnit, NUnit, Moq, WireMock, Selenium, Playwright, Postman, POM Delivery: Git, GitLab, BitBucket, TeamCity, Octopus Deploy Observability: Kibana, SumoLogic, DataDog etc. #LI-CS1 Cart.com is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.