Application Developer II

McCarthy Holdings, Inc.; Dallas (TX); Presencial; USD 110.000 - 170.000; Jornada completa

Descripción de la vacante

McCarthy Holdings, Inc. is seeking an Application Developer to join the Engineering and Intelligence team. You will build business applications on Palantir Foundry, focusing on the user interface layer and AI-enabled experiences.

You will collaborate with product owners, data engineers, and architects to translate requirements into secure, production-ready solutions and contribute to DevSecOps practices across the lifecycle.

Formación

• 5+ years of professional software development experience building and supporting enterprise applications using a modern framework or stack (e.g., .NET/C#, Java/Spring, Ruby on Rails, Node.js/TypeScript).
• Strong understanding of software engineering fundamentals, including design, reusable components, version control, automated testing, debugging, and maintainable code.
• Experience building and consuming REST APIs, working with relational databases and SQL, and handling JSON.
• Practical experience with Git, CI/CD pipelines, and software delivery practices across environments.
• Knowledge of secure development, including authentication, authorization, secrets management, and vulnerability remediation.
• Awareness of risks in AI-assisted development and mitigating them via code reviews, testing, and policy adherence.
• Ability to learn new platforms quickly; Foundry experience not required but beneficial.
• Experience in Agile environments translating requirements into stories and delivering iteratively.
• Strong problem-solving and collaborative communication skills.

Responsabilidades

• Design and develop application solutions on Palantir Foundry, focusing on the application and user interface layers built on the Ontology.
• Build custom applications using OSDK, TypeScript, and React, integrating Ontology objects, relationships, Actions, and Functions.
• Leverage Foundry features (Workshop, Functions, AIP) to streamline workflows and enable AI-powered experiences.
• Translate business requirements into secure, scalable designs and reusable components with usability and accessibility in mind.
• Collaborate with data engineers and data architects to shape and develop a robust Ontology.

Conocimientos

.NET/C#

Java/Spring

Ruby on Rails

Node.js/TypeScript

REST APIs

SQL databases

CI/CD pipelines

Secure coding

AI risk awareness

Agile methodologies

Palantir Foundry

Foundry Ontology SDK (OSDK)

Herramientas

Git

CI/CD tools

Workshop

OSDK

Descripción del empleo

POSITION SUMMARY

McCarthy is seeking a full-time Application Developer, who as part of the Engineering and Intelligence team, will play a crucial role in building business applications and user experiences on the Palantir Foundry platform, supporting existing systems, and driving innovation through modern DevSecOps practices.

The primary focus for this role is development on the Foundry platform: creating AI-enabled solutions that deliver intuitive user experiences, streamline operational workflows, support informed decision-making, and provide reusable application components that help McCarthy teams act on trusted data. The developer will work closely with product owners, data engineers, Foundry Ontology specialists, technology architects, and business stakeholders to translate user requirements into secure, maintainable, production-ready solutions.

RESPONSIBILITIES

Solution Design and Development

• Design and develop application solutions on Palantir Foundry, with primary responsibility for the application and user experience layers built on top of the Ontology.
• Build custom applications using OSDK, TypeScript, and React, integrating Ontology objects, relationships, Actions, and Functions to support structured data and unstructured content.
• Leverage Foundry capabilities, including Workshop, Functions, and AIP, to streamline operational workflows, enable AI-powered experiences, and support informed decision-making. Integrate applications with enterprise systems through REST APIs and supported event-driven patterns.
• Translate business requirements into secure, scalable, and maintainable application designs, applying established development patterns, creating reusable components, and incorporating usability, accessibility, and user feedback.
• Partner with data engineers and data architects to actively shape and develop a robust Ontology, ensuring its objects, relationships, properties, and Actions support application requirements and operational workflows.

Quality Assurance and Delivery

• Develop and maintain automated tests, participate in code reviews, and validate application functionality, integrations, and AI-enabled features against defined acceptance criteria.
• Develop, test, and deploy solutions using strong CI/CD practices and Foundry’s branching, version control, and deployment capabilities to enable reliable releases.
• Apply Agile practices to plan and manage assigned work, communicate progress and dependencies, and deliver user stories iteratively.

Application Support and Continuous Improvement

• Monitor, troubleshoot, and optimize deployed Foundry applications, addressing defects, integration failures, and performance, usability, and reliability issues in collaboration with relevant teams.
• Implement and validate application fixes and enhancements using established testing, code review, and deployment practices.
• Identify opportunities to automate workflows, improve application performance, and enhance end-user experience.
• Stay current with Foundry capabilities and relevant development technologies, applying new knowledge to improve solution quality and delivery.

Security and Governance

• Develop applications that respect Foundry’s access controls, including roles, markings, and granular data permissions, and follow established security and governance standards.
• Apply secure coding practices to OSDK applications and integrations, including appropriate authentication, credential management, and handling of sensitive data.
• Test application behavior across user roles and permission levels, and collaborate with security and platform teams to address identified issues.

Collaboration and Knowledge Sharing

• Build strong partnerships with internal Digital Enterprise teams, business stakeholders, and product owners to understand McCarthy’s needs, clarify requirements, and define actionable user stories and acceptance criteria.
• Maintain application documentation, troubleshooting guides, and support procedures to enable effective maintenance and knowledge sharing.
• Share reusable components, development patterns, and lessons learned to strengthen team capabilities and promote consistent development practices.

QUALIFICATIONS

• Minimum 5 years of professional software development experience building and supporting enterprise applications using a modern framework or stack, such as .NET/C#, Java/Spring, Ruby on Rails, or Node.js/TypeScript.
• Strong understanding of software engineering fundamentals, including application design, reusable components, version control, automated testing, debugging, and maintainable code.
• Experience building and consuming REST APIs, working with relational databases and SQL, and handling common data formats such as JSON.
• Practical experience with Git, CI/CD pipelines, and software delivery practices, including code reviews, automated testing, and deployment across development, test, and production environments.
• Working knowledge of secure application development, including authentication, authorization, secrets management, dependency security, and remediation of identified vulnerabilities.
• Understanding of the risks associated with AI-assisted development—including insecure code, exposure of sensitive information, and unverified dependencies—and how to mitigate them through code review, testing, and adherence to organizational policies for third-party code and dependencies.
• Demonstrated ability to learn new platforms and technologies quickly and apply them to deliver working solutions. Prior Palantir Foundry experience is not required; a strong aptitude and motivation to become proficient in Foundry development are essential.
• Experience working in an Agile environment, collaborating with product owners and technical teams to translate requirements into user stories and deliver solutions iteratively.
• Strong problem-solving, interpersonal, and communication skills, with a collaborative mindset and a commitment to continuous learning and improvement.

Preferred Skills

• Experience developing applications on Palantir Foundry using Workshop, the Ontology SDK (OSDK), Functions, or Actions.
• Proficiency in TypeScript and React, particularly for building interactive, data-driven applications.
• Experience using AI-assisted coding tools to improve development productivity while maintaining full responsibility for the correctness, maintainability, and security of delivered code.
• Familiarity with semantic data models or knowledge graphs and how entities, relationships, and business operations support application development.
• Experience incorporating AI capabilities into applications using Palantir AIP or comparable technologies, including integrating AI outputs into user workflows and evaluating their usefulness and reliability.
• Familiarity with cloud platforms such as AWS or Azure, containers, and event-driven integration patterns.

McCarthy is proud to be an equal opportunity employer, including disability and protected veteran status.

AI Engineer II Information Technology — St. Louis, MO - Corporate Office