Senior Fullstack Developer (Backend)

About the role

Lyntris is seeking a Full-Stack Engineer to build and integrate concept capabilities for an Uncrewed Surface Vessel (USV) autonomy and mission software platform. This role focuses on Python networking, backend service development, real-time data movement, distributed systems integration, and C++ interfaces/components.

Responsibilities

• Deliver integrated concept demonstrations for USV workflows such as mission execution monitoring, route execution support, vehicle health/status, operator oversight, and simulation-backed demonstrations.
• Connect backend services to simulation, replay, and vessel-adjacent systems so concepts reflect realistic telemetry cadence, state transitions, faults, and mission events.
• Support end-to-end integration across services, data streams, and mission software components.
• Develop Python services, adapters, and tooling to support concept development, data translation, automation, replay, and simulation hooks.
• Implement and maintain real-time interfaces such as REST APIs, WebSockets, TCP/UDP communication paths, streaming pipelines, and pub/sub patterns.
• Design and troubleshoot inter-service communication, connection management, reconnection behavior, message routing, and high-rate telemetry handling.
• Work within distributed architectures common to autonomy stacks, including Redis or Valkey, DDS, pub/sub buses, and other message-oriented systems.
• Diagnose backend and networking issues such as service discovery failures, QoS/config mismatches, dropped connections, environment drift, and runtime logging problems.
• Contribute to or interface with C++ components where performance, hardware interaction, protocol handling, or existing subsystem integration requires it.
• Work across mixed-language systems where Python services integrate with C++ libraries, binaries, or networked components.
• Aid in protocol and device integration efforts relevant to autonomy or vehicle systems.
• Support frontend or operator-facing application work as needed, including integration with existing web interfaces.
• Orchestrate, deploy, and maintain containerized and orchestrated deployments including Docker, Docker Compose, and Kubernetes.
• Add pragmatic test coverage for critical backend logic and integration flows.
• Produce clear runbooks for setup, deployment, networking configuration, simulation inputs, and troubleshooting to keep concepts demo-ready.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or equivalent professional experience.
• Strong Python experience for backend services, tooling, networking, or automation.
• Experience with backend system design and real-time integration patterns such as WebSockets, REST, TCP/UDP, streaming, or pub/sub.
• Working knowledge of C++ for software integration, systems work, or performance-sensitive components.
• Familiarity with Docker and Docker Compose; familiarity with Kubernetes is a plus.
• Strong debugging skills across backend services, networking behavior, and distributed systems.
• Ability to work across multiple layers of a software stack in support of integrated concepts and demonstrations.

Preferred Qualifications

• Experience with distributed messaging systems such as Redis or Valkey pub/sub, DDS, MQTT, Kafka, or similar.
• Experience with simulation, replay, or telemetry-heavy systems.
• Familiarity with autonomy, robotics, or maritime system concepts.
• Exposure to maritime or USV-related data sources such as GPS, IMU, AIS, radar, or NMEA/NMEA2000.
• Experience with Svelte, SvelteKit, or other modern frontend frameworks.
• Experience building map, geo, or operational interfaces.