Full Stack Developer

Posted 6 Hours Ago
4 Locations
In-Office or Remote
Mid level
Information Technology • Professional Services • Security • Defense
The Role
Build and maintain scalable microservices, APIs, and responsive React/TypeScript UIs for a modular security-operations platform. Integrate sensors and devices, implement real-time features (WebSockets, Kafka), design data models, participate in CI/CD, code reviews, sprint planning, and optimize full-stack features in a DevOps environment.
Summary Generated by Built In
Job Summary & Responsibilities

Position Summary

We’re looking for a Full Stack Developer to help expand and refine the LEXSO (Layered Extended Security Operations) platform—a modular, microservice-based system designed to orchestrate real-time data from sensors, cameras, AI engines, and automation tools across security operations environments.

As a full stack engineer, you’ll contribute across both frontend and backend domains, building scalable microservices, powerful APIs, and responsive user interfaces. You'll work alongside specialists in automation, sensor fusion, and distributed systems to solve complex challenges in a modern DevOps environment.

This is a great opportunity for someone with a few years of experience who wants to take ownership of major features and help drive architectural and system-level improvements in a fast-moving, impactful platform.

 

RESPONSIBILITES:

  • Design and develop backend services using FastAPI, Kafka, PostgreSQL, and Docker.
  • Build and maintain frontend interfaces using React, TypeScript, and real-time visual components (e.g., WebSockets, Mapbox).
  • Create and maintain REST APIs and Kafka consumers for automation and alerting workflows.
  • Integrate a wide range of devices and sensors (e.g., PTZ cameras, LiDAR, radar, drones) into reusable service modules.
  • Contribute to component design, service orchestration, and data modeling.
  • Participate in sprint planning, peer reviews, and CI/CD deployment workflows.
  • Debug, test, and optimize both backend and frontend features.
  • Collaborate using Git, GitHub, Jira, Confluence, and automated build pipelines.
  • Work is typically based in a remote environment and subject to frequent interruptions. Business work hours are Monday-Friday standard core hours, however some extended or weekend hours may be required.
  • Other duties as assigned.

 

QUALIFICATIONS:

  • Proficiency with Python (preferably FastAPI or similar frameworks)
  • Proficiency with JavaScript/TypeScript and React or another frontend framework
  • Experience designing and consuming REST APIs
  • Familiarity with relational databases (e.g., PostgreSQL) and schema design
  • Experience with Docker, Git-based workflows, and Agile teams
  • Strong problem-solving skills and attention to software quality
  • Preferred:
    • Exposure to:
      • Kafka, MongoDB, or OpenSearch/Elastic
      • js, Tailwind CSS, shadcn/ui
      • OAuth/JWT authentication flows (e.g., via Keycloak, Auth0)
      • Real-time systems: WebSockets, pub/sub architectures
      • IoT, robotics, or physical device integrations
      • CI/CD tooling: GitHub Actions, ArgoCD, Kubernetes
    • Bachelor’s degree in Computer Science, Software Engineering, Electrical Engineering, or a related technical field is required. Candidates with equivalent degrees (e.g., Robotics, Mechatronics, Data Science, Cybersecurity) will also be considered.

 

BENEFITS

Constellis offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects its commitment to creating a diverse and supportive workplace.

Skills Required

  • Proficiency with Python (preferably FastAPI)
  • Design and develop backend services using Kafka
  • Familiarity with relational databases (PostgreSQL) and schema design
  • Experience with Docker and containerized deployments
  • Proficiency with JavaScript/TypeScript and React
  • Build and maintain realtime features using WebSockets and Mapbox
  • Experience designing and consuming REST APIs
  • Experience with Git-based workflows, GitHub, Agile teams, Jira, Confluence
  • Strong problem-solving skills and attention to software quality
  • Bachelor's degree in Computer Science, Software Engineering, Electrical Engineering, or related technical field (or equivalent)
  • Exposure to MongoDB
  • Exposure to OpenSearch/Elasticsearch
  • Experience or exposure to Tailwind CSS and shadcn/ui
  • Familiarity with OAuth/JWT authentication flows (Keycloak, Auth0)
  • Experience with real-time/pub-sub architectures and automation (Kafka consumers, pub/sub)
  • Experience integrating IoT, robotics, or physical devices (PTZ cameras, LiDAR, radar, drones)
  • Familiarity with CI/CD tooling: GitHub Actions, ArgoCD, Kubernetes

Constellis Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Constellis and has not been reviewed or approved by Constellis.

  • Leave & Time Off Breadth Structured PTO starting around 15 days per year, increasing with tenure, plus 12 company holidays establishes a predictable time-off baseline. This design provides clear accrual growth with tenure.
  • Retirement Support A 401(k) is available at hire for eligible employees with contributions adjustable at any time. This offers accessible retirement saving even as terms may differ under collective bargaining agreements.
  • Career-Linked Recognition & Rewards Programs include short-term incentive pay, SPOT awards, and an annual Employee Excellence Award of $5,000. These mechanisms add cash recognition beyond base pay when available.

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The Company
HQ: Herndon, VA
7,000 Employees
Year Founded: 2010

What We Do

Constellis is the largest and most diverse non-financial risk management company in the United States, providing operational support and risk management services to safeguard people and infrastructure globally.

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