Full Stack Software Engineer

Quartermaster AI Inc

$100K — $150K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 2-4 years of full-stack software engineering experience.
  • Proficient in React and modern JavaScript/TypeScript for creating dynamic web applications.
  • Experienced with Spring Boot and robust REST API design.
  • Skilled in PostGIS or relational databases, including performance query writing.
  • Familiar with AWS services like S3 and Lambda, and container deployment (Kubernetes).
  • Knowledge of CI/CD processes and Git for version control.
  • Ability to analyze data flows involving real-time streams and geospatial data.

Responsibilities

  • Build, test, and deploy full-stack features for React web portal and Spring Boot backend.
  • Develop and maintain versioned RESTful APIs for sensor data and AI outputs.
  • Deploy and manage AWS-based microservices for reliability and performance.
  • Write and optimize PostGIS queries for effective data retrieval.
  • Create internal admin tools for SmartMast unit management and support.
  • Collaborate with designers to implement precise UI components for visual data representation.

Benefits

  • Hybrid working model with 3 days in the office.
  • Flexible working hours to accommodate personal schedules.
  • Engagement in innovative projects that have a global impact.
Full Job Description
Job Description

We are looking for a Full Stack Software Engineer to help us build and scale the Quartermaster product-the operator-facing application used by defense analysts, coast guard operators, and commercial fleet managers to monitor, query, and act on maritime intelligence in real time. You will build and ship features end-to-end, from backend geospatial data layers to React components, translating complex real-time sensor data into clean, highly functional user experiences.

Key Responsibilities
  • Build, test, and ship full-stack features across our React web portal and Spring Boot backend services.
  • Develop and maintain versioned RESTful APIs that surface sensor data, vessel telemetry, and AI detection outputs to end users.
  • Deploy and maintain microservices running on AWS, ensuring service reliability and low latency under high-throughput data conditions.
  • Write and optimize PostGIS queries and data access patterns to support bulk artifact retrieval and map rendering across hundreds of vessels.
  • Build internal admin and fleet management tools that help our operations team configure, monitor, and support deployed SmartMast units.
  • Collaborate closely with our design team to implement pixel-precise UI components for data-dense map views and sensor visualizations.
Qualifications (Preferred)
  • 2-4 years of professional full-stack software engineering experience.
  • Strong command of React and modern JavaScript/TypeScript for building complex, stateful web applications.
  • Solid backend experience in Spring Boot; experience designing and building robust REST APIs.
  • Hands-on experience with PostGIS or relational databases; able to write performant queries and understand data schemas.
  • Working knowledge of AWS services (S3, Lambda, ECS/EKS) and deploying applications in containerized environments (Kubernetes).
  • Familiarity with CI/CD pipelines and a strong understanding of version control (Git).
  • Ability to read and reason about data flows involving real-time streams, media assets, and geospatial coordinates.
  • Strong written and verbal communication skills; comfortable collaborating across teams and working asynchronously.
  • Bonus Points:
    • Experience with geospatial data, mapping libraries (Mapbox, Leaflet, Deck.gl), or AIS/vessel tracking systems.
    • Familiarity with WebSockets or SSE for real-time UI updates.
    • Background in defense, maritime, or government software with exposure to data security requirements.
    • Experience integrating ML model outputs into user-facing product features.
Work Environment
  • This is a hybrid position, 3-days in office.
  • Flexible working hours with occasional deadlines requiring high availability.
  • Opportunity to work on innovative projects with a global impact.

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