Staff Software Engineer – AI-Driven, Scalable Platform

X4 Life Sciences; Washington, Baltimore (District of Columbia, MD); Presencial; USD 180.000 - 270.000; Jornada completa

Descripción de la vacante

X4 Life Sciences is seeking a Staff Full-Stack Software Engineer to join a fast-growing healthtech team in Washington, DC. You will influence architectural decisions, own parts of the product roadmap and lead cross-functional delivery across front-end, back-end, cloud and AI components.

You will design scalable APIs (REST/GraphQL), work with FastAPI, Node.js and Python, and drive secure, reliable cloud infrastructure on AWS and/or Azure.

Formación

• 8+ years of professional software engineering experience, with a strong background in full-stack development and customer-facing applications.
• Hands-on experience with Node.js and Python, ideally including FastAPI.
• Experience designing and evolving scalable software architectures with clear technical decisions across the full stack.
• Cloud engineering experience with AWS and/or Azure services (EC2, Kubernetes, Lambda, S3, RDS).
• Experience integrating LLM APIs into production apps and working with prompt engineering, RAG, and context management.

Responsabilidades

• Lead design and development of scalable, customer-facing applications and own technical decisions from design to production.
• Design and maintain back-end services, APIs and system architecture using Node.js and Python (FastAPI).
• Own architectural decisions across AWS/Azure infrastructure, ensuring security, reliability and scalability.
• Improve CI/CD pipelines and deployment processes, promoting engineering best practices.
• Lead integration of LLMs and ML capabilities into production apps using providers like OpenAI and Anthropic.
• Design robust REST and GraphQL APIs with a focus on performance and security.
• Model data architecture and performance across relational and NoSQL databases.
• Collaborate with product management to translate business requirements into technical solutions.
• Provide technical guidance via code reviews and architecture discussions to raise engineering standards.
• 8+ years of relevant experience in fast-moving environments.
• Ability to balance short-term delivery with long-term architectural goals.

Conocimientos

Full-stack development

Technical leadership

Architectural design

Cloud engineering

API design (REST/GraphQL)

LLM integration

CI/CD automation

Database design

Team mentoring & collaboration

PHI healthtech experience

Herramientas

Node.js

Python

FastAPI

AWS

Azure

PostgreSQL

DynamoDB

GitHub

Jira

Confluence

Terraform

Pulumi

AWS CDK

Descripción del empleo

X4 Life Sciences is seeking a Staff Full-Stack Software Engineer to join a fast-growing healthtech team in Washington, DC. You will influence architectural decisions, own parts of the product roadmap and lead cross-functional delivery across front-end, back-end, cloud and AI components.

You will design scalable APIs (REST/GraphQL), work with FastAPI, Node.js and Python, and drive secure, reliable cloud infrastructure on AWS and/or Azure.