Senior Data Engineer

Cross River

Senior Software Engineer developing user-facing tools for AI-powered data platform at fintech Cross River. Collaborating with teams to build and secure full-stack applications leveraging AI capabilities.

Posted 7/14/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $150,000 - $200,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack software development, particularly with React and Python, while integrating AI capabilities and ensuring data security. Proficient in AWS services and relational databases, with a strong focus on operational stability and problem-solving.

Highest-signal resume keywords

Full-Stack Web DevelopmentReact Front-End DevelopmentPython Back-End DevelopmentAWS Cloud EnvironmentsLarge Language Model Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentReactPythonTypeScriptAPI DevelopmentSQLRelational DatabasesVersion ControlProblem-SolvingData Security

Soft Skills

CollaborationConsiderate Data StewardshipEnthusiasm for Delivering Solutions

Tools & Technologies

AWS Lake FormationAWS GlueAWS AthenaAWS ECSSnowflakeGit

Industry Keywords

AI-Native CapabilitiesRetrieval-Augmented GenerationNatural-Language-to-SQLData StewardshipObservability

Tech Stack

Tools & technologies

AWSCloudPythonReactSQLTypeScript

About the role

Key responsibilities & impact

Design, develop, and maintain full-stack software in support of Cross River's data platform
Build and operate AI-native capabilities: LLM-powered agents and reasoning loops, retrieval-augmented generation (RAG) over the data catalog, and natural-language-to-SQL query experiences
Integrate large language models responsibly, with rigorous permission checks, tracking, and observability on every model call
Act as a thoughtful and considerate data steward, with a mind for strong data security
Engineer React-based web UIs that present complex data (catalogs, lineage, dashboards, and conversational interfaces) clearly and accessibly
Build and operate Python back-ends that house APIs and integrate with the data platform and adjacent systems
Interact with AWS services and technologies including Lake Formation, Glue, Iceberg, Hive, Athena, ECS, and Snowflake
Operate and troubleshoot any issues across the UIs, APIs, agents, and data pipelines
Collaborate with other software engineers, data engineers, data scientists, and business personnel to ensure business, security, and operational needs are met
Manage code and versioning effectively using Git and participate in architectural discussions on product- and platform-level designs
Ensure best practices around development, testing, and documentation

Requirements

What you’ll need

5+ years of experience in software engineering, with a strong focus on full-stack web and API development
Strong front-end skills with React and TypeScript
Strong back-end / API development skills in Python
Hands-on experience building with large language models, such as integrating LLM APIs, agents, RAG, or other AI-powered application features
Proven experience with AWS cloud environments (ECS, IAM, S3, and data services such as Glue, Athena, or Lake Formation)
Strong experience with relational databases and SQL, plus Git for version control and review processes
Very strong problem-solving skills and an enthusiasm for delivering working, performant, and operationally stable solutions.

Benefits

Comp & perks

Cross River is an Equal Opportunity Employer.
Cross River does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis covered by appropriate law.