Location: Remote Must be willing to work in the MST Time Zone
Engagement Type: Contract
Duration: 6+ Months
STAFFXPERT LLC is seeking a Backend Software Developer on behalf of our client for a remote opportunity supporting a high-priority nuclear technology platform. The ideal candidate will have strong backend development experience and, preferably, a background in the nuclear, nuclear engineering, or nuclear safety domain.
The role involves building a prototype-first platform that supports advanced reactor design, safety-basis development, and regulatory authorization workflows. This is a fast-paced environment focused on rapid iteration, incremental delivery, and close collaboration with engineering subject-matter experts.
Key Responsibilities-
Design and develop backend data layers for multi-module applications covering design, safety, and review workflows.
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Design database schemas, ORM/data-access layers, and migration strategies.
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Build and document RESTful APIs supporting form-driven applications and workflow management.
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Develop integrations with external engineering systems such as IBM DOORS Next and PTC Windchill.
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Implement data mirroring, caching, and provenance tracking while maintaining external systems as the source of truth.
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Collaborate with front-end developers, engineering SMEs, and end users on API and schema design.
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Contribute to backend architecture and technology-stack decisions.
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Translate technical and regulatory documentation into structured data models.
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Deliver clean, incremental, and reviewable code through small PRs and frequent releases.
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3+ years of professional backend software development experience.
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Strong hands-on experience with Python, FastAPI, or comparable asynchronous Python frameworks.
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Experience with SQLAlchemy, preferably SQLAlchemy 2.0 typed ORM.
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Strong PostgreSQL experience, including schema design, relational modeling, and database migrations.
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Experience with Alembic or equivalent migration frameworks.
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Proven experience designing and developing RESTful APIs for front-end applications.
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Ability to work effectively in a fast-paced, prototype-driven environment.
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Strong analytical and problem-solving skills.
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Ability to work independently while communicating technical decisions and trade-offs effectively.
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Prior experience in the nuclear, nuclear engineering, nuclear safety, or related regulated industry.
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Experience integrating IBM DOORS Next and PTC Windchill through APIs.
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Understanding of system-of-record and data-provenance patterns.
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Experience with Docker and containerized application deployment.
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Experience with Pydantic and FastAPI request/response validation.
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Experience collaborating with React/TypeScript front-end teams.
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Familiarity with enterprise engineering, design, requirements-management, or regulatory systems.
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Python
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FastAPI
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SQLAlchemy 2.0
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PostgreSQL
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Alembic
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Pydantic
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REST APIs
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Docker
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React/TypeScript
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IBM DOORS Next
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PTC Windchill
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Comfortable working independently with minimal day-to-day oversight.
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Strong communication and collaboration skills.
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Comfortable with evolving requirements and rapid development cycles.
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Able to produce clean, maintainable, incrementally reviewable code.
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Proactive in communicating technical risks, design decisions, and trade-offs.
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