Senior Full Stack Software Engineer

The role

You will build and scale the operator-facing application used to monitor maritime intelligence. You will own features from backend geospatial fusion to React components.

What you will do

• Design, build, and ship full-stack features across React web portal and Spring backend services.
• Develop and maintain versioned RESTful APIs.
• Architect and evolve microservices layer running on AWS.
• Optimize PostGIS queries and data access patterns.
• Build internal admin and fleet management tools.
• Collaborate with the design team to implement UI components.
• Participate in on-call rotations and take ownership of service reliability.
• Review code and mentor engineers.

Required qualifications

• Ability to work asynchronously across a distributed team.

Nice to have

• 5+ years of professional full-stack software engineering experience.
• Strong command of React and modern JavaScript/TypeScript.
• Solid backend chops in Spring Boot; experience designing and building REST APIs at scale.
• Hands-on experience with PostGIS document databases.
• Working knowledge of AWS services (S3, Lambda, ECS/EKS, IoT Core, CloudWatch) and infrastructure-as-code tooling.
• Experience with microservices architecture, containerization (Kubernetes), and CI/CD pipelines.
• Ability to read and reason about complex data flows involving real-time streams, large media assets, and geospatial coordinates.
• Strong written and verbal communication skills.
• 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.

About the company

Quartermaster is building a maritime intelligence platform using the SmartMast system. The team builds dual-use technology for defense agencies, coast guards, and commercial maritime operators.