Principal Software Engineer

Description
Robert Half is hiring! We are looking for a Principal Software Engineer to lead the design and delivery of modern AI-driven software solutions. This role combines hands-on engineering with technical leadership across backend services, frontend applications, and intelligent workflow development. The ideal candidate brings deep full-stack expertise, a strong product mindset, and the ability to guide scalable systems from concept through production.

Responsibilities

Lead complete product delivery efforts, from technical planning and architecture through implementation, testing, and long-term support. Create and refine agentic AI workflows that support business goals and integrate effectively with broader application ecosystems. Build, enhance, and support scalable server-side applications using Python frameworks such as Django, Flask, or FastAPI, or Node.js frameworks including Express or NestJS. Develop robust RESTful and GraphQL interfaces that enable reliable communication between platforms, services, and user-facing applications.

Implement and improve React-based frontend features with a focus on usability, responsiveness, and smooth integration with backend systems. Architect and maintain microservices and distributed application components to support performance, resilience, and future growth. Improve system efficiency by tuning application behavior, streamlining database interactions, and optimizing cloud infrastructure usage. Apply strong security standards by implementing access controls, authentication mechanisms, and authorization practices across the platform.

Oversee automated delivery processes and container-based deployments using CI/CD pipelines, Docker, and related engineering tools. Partner with product, design, and DevOps teams to resolve production issues, maintain cloud-based services, and deliver high-quality software outcomes. Requirements
At least 8 years of experience delivering software solutions in production environments. Strong development expertise in Python or Node.js, with the ability to build maintainable and scalable applications. Proven experience creating frontend applications with React in a full-stack development setting.

Hands-on knowledge of relational databases such as PostgreSQL or MySQL and/or NoSQL platforms such as MongoDB or DynamoDB. Solid understanding of API design principles, including RESTful services, and experience with asynchronous programming concepts. Proficiency with Git and team-based development practices in collaborative engineering environments. Strong analytical thinking and problem-solving skills, with the ability to balance multiple priorities effectively. Commitment to producing clear, maintainable, and well-documented code while working effectively with cross-functional teams.

Technology Doesn't Change the World, People Do. Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training.

Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.
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