[Remote] Senior Software Engineer - Semantic Data Lake

Note: The job is a remote job and is open to candidates in USA. WEX is reimagining its enterprise data platform, and they are seeking a Senior Software Engineer on the Semantic Data Lake Team to design, build, and maintain core data objects. The role involves implementing transformation logic, ensuring data consistency, and leveraging AI coding tools to enhance development processes.ResponsibilitiesDesign and implement semantically consistent, scalable 360 data models that integrate data across domainsBuild and maintain transformation pipelines that apply cleansing, standardization, enrichment, and derived logic to domain datasetsWrite production-quality, testable code in SQL and Python (or equivalent)—delivering performant and maintainable data assetsLeverage AI coding assistants (Claude, Copilot, Cursor, and similar) to accelerate development—drafting transformation logic, generating tests, refactoring pipelines, exploring datasets, and producing semantic documentation—while critically reviewing AI output for correctness, performance, and alignment with business rulesPartner closely with the data products team to understand business requirements and ensure semantic models align with their needsImplement logic for classifications, KPIs, scoring algorithms, and business rules, ensuring traceability and data lineageCollaborate across teams to integrate with ingestion, MDM, and data product layers, and explore opportunities to expose 360 objects to LLM-powered and agentic applicationsSkills4-8 years of experience in data engineering or software engineering with a focus on data transformation, modeling, or analytics platformsStrong proficiency in SQL and at least one general-purpose language such as Python or ScalaDemonstrated experience as an AI-native engineer—using tools like Claude, GitHub Copilot, Cursor, or similar as part of your everyday development workflow, with a clear point of view on where they accelerate your work and where human judgment is essentialComfort with modern AI engineering practices such as prompt design, context engineering, AI-assisted code review, and integrating LLMs or AI agents into engineering or data workflowsExperience building and scaling wide, entity-based tables and modeling domain concepts (e.g., customer, fleet, provider) into durable data objectsSolid understanding of data quality practices—including validation, enrichment, schema enforcement, and business rule encodingExperience working with large-scale datasets and optimizing transformation pipelines for performance and maintainabilityComfort operating in a collaborative, cross-functional environment, balancing business logic with platform scalabilityA mindset for traceability, reproducibility, and semantic clarity—you build data models others (humans and AI systems alike) can trust and reuseBachelor's degree in Computer Science, Software Engineering, or related fieldBenefitsHealth, dental and vision insurancesRetirement savings planPaid time offHealth savings accountFlexible spending accountsLife insuranceDisability insuranceTuition reimbursementQuarterly or annual bonus based on their role and applicable planCommission under the terms of an applicable plan for sales positionsCompany OverviewWex is a financial technology service provider for fleet, travel and healthcare industries. It was founded in 1983, and is headquartered in Portland, Maine, USA, with a workforce of 5001-10000 employees. Its website is http://www.wexinc.com.Company H1B SponsorshipWEX has a track record of offering H1B sponsorships, with 4 in 2026, 22 in 2025, 10 in 2024, 12 in 2023, 20 in 2022, 14 in 2021, 18 in 2020. Please note that this does not guarantee sponsorship for this specific role.