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Sr. Full Stack Engineer

3B Staffing LLC

Sr. Full Stack Engineer


6 Month Contract-to-Hire


Onsite daily in Addison, TX


US Citizen or GC Holder required


2 interview process (2nd/final interview is onsite)


Python, SQL, Snowflake, React, Node.js, REST APIs, Docker, Kubernetes (AKS), Azure, Microservices, Distributed Systems, Event-Driven Architecture, Apache Airflow, CI/CD, Full Stack Development, Healthcare/Finance domain experience.


Top 3 Skills/Must Haves

  • Full Stack Engineer owning and has experience seeing projects from end to end
  • Back End: Python *, SQL, snowflake
  • Front End: React, node.js, Go, Vue
  • *** Manager likes IT related degrees
  • Senior level resource owning and leading. No direct reports or managing in this role.
*** Healthcare or Finance backgrounds are great. Not the large financial companies because they are not doing enough hands on work


Role Summary
We are seeking a highly capable Senior Full Stack Python Engineer with strong experience building end-to-end distributed software systems from the ground up.
This is not a scripting, DevOps, or task execution role.
We are looking for a software engineer who can design and build complete application systems - spanning backend services, APIs, distributed processing workflows, and supporting frontend integration layers - with strong emphasis on Python-based backend engineering.
The ideal candidate naturally thinks in terms of:
  • system design and architecture
  • distributed application behavior
  • service decomposition and APIs
  • data and workflow flow across systems
  • scalability and resiliency patterns
  • production reliability and observability
This role requires engineers who can translate business requirements directly into working, production-grade software systems , not isolated scripts or automation tools.
The environment is Azure-hosted, container-first, and supports operationally critical enterprise workloads including large-scale processing and distributed workflows.

What You'll Own

Full Stack System Development (Core Responsibility)
  • Design and build full-stack applications with Python-based backend services and supporting UI/integration layers
  • Develop RESTful APIs and backend services that support web and internal applications
  • Collaborate on frontend integrations (React/JavaScript or equivalent) to enable end-to-end system functionality
  • Build modular, maintainable, and production-ready software systems
  • Translate business workflows into complete software solutions across backend + integration layers
Python Backend & Distributed Systems Engineering
  • Design and implement scalable Python backend services and distributed processing systems
  • Build microservices-based architectures supporting enterprise workflows
  • Develop event-driven and asynchronous processing systems using queues, workers, and orchestration layers
  • Ensure systems are designed for:
    • resiliency
    • scalability
    • fault isolation
    • recoverability
    • operational stability
    • maintainability
Large-Scale Processing & Resilient Workflows
  • Build systems capable of processing large files and long-running workloads reliably
  • Implement:
    • streaming / chunk-based processing
    • retry and recovery logic
    • checkpointing and resumable workflows
    • idempotent processing patterns
    • failure isolation and automatic recovery
  • Engineer systems that remain stable under:
    • network instability
    • partial system failures
    • container restarts
    • distributed workload interruptions
Cloud-Native & Containerized Application Engineering
  • Design and deploy containerized Python applications using Docker
  • Build and deploy applications on:
    • Azure Kubernetes Service (AKS)
    • Azure Container Apps
  • Ensure systems support:
    • horizontal scaling
    • rolling deployments
    • versioned deployments
    • fault-tolerant runtime behavior
    • observability and monitoring integration
Workflow Automation & Distributed Processing
  • Build distributed workflows using Apache Airflow or equivalent orchestration tools
  • Design queue-based and worker-based processing systems
  • Ensure workflows are:
    • observable
    • recoverable
    • scalable
    • production-safe
CI/CD, Observability & Operational Engineering
  • Build and maintain CI/CD pipelines for full-stack applications and services
  • Implement production-grade logging, monitoring, and alerting systems
  • Ensure systems are fully observable and diagnosable in production environments
Required Experience & Skills
  • 8-12+ years of professional software engineering experience
  • Strong hands-on expertise in Python (Python 3.x) as a primary language
  • Proven experience building full-stack or platform-grade software systems
  • Demonstrated ability to design and implement distributed application architectures
  • Strong understanding of system design principles including:
    • microservices
    • event-driven architecture
    • asynchronous processing
    • API-first design
    • distributed workflows
Technical Skills (Hands-On)
  • Python (core requirement)
  • REST API development
  • Docker
  • Kubernetes (AKS preferred)
Vacancy posted 2 days ago
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