Senior Software Engineer (C#) - Contract

SRT Marine Systems plc; Cardiff; Hybrid; GBP 80,000 - 100,000; Part time

Job summary

A leading marine technology firm in Cardiff is seeking a Senior Software Developer to transform a proof-of-concept system into a robust edge platform. This role involves developing real-time applications that enhance maritime situational awareness through innovative sensor data processing. The ideal candidate has strong skills in C# and C++ and will contribute to cutting-edge maritime solutions in a supportive team environment.

Benefits

Work on mission-critical systems

Be part of an innovative team

Flexible hybrid working

Impact on global maritime safety

Qualifications

• Strong proficiency in C#, with experience developing high-performance applications.
• Background in C++, with a solid understanding of software fundamentals.
• Demonstrable experience in sensor data processing, tracking systems, or real-time systems.

Responsibilities

• Transform existing proof-of-concept into a scalable, production-grade platform.
• Support multi-domain sensor fusion and anomaly detection.
• Implement augmented reality visualization and capture incident evidence.

Skills

Strong proficiency in C#

Background in C++

Sensor data processing

Tracking systems or sensor fusion algorithms

Real-time or embedded systems

Understanding of networking protocols

Familiarity with multi-threaded programming

Job description

Join Us at SRT Marine Systems as Senior Software Developer

Job Title: Senior Software Developer (Edge Team)

Location: 1 day / week in Cardiff office

Job Type: Contract (day rate)

SRT Marine Systems plc (SRT) are a market leader in its domain of international marine surveillance technology and systems. We are respected, established and an ambitious multi-national company headquartered in the UK with a global customer base.

The Edge Team is responsible for developing the next‑generation hardware and software platform that forms the outer layer (“edge”) of our wider Maritime Domain Awareness (MDA) system. This platform consolidates and analyzes sensor data gathered from the maritime environment, enhancing the intelligence available to users at remote command and control centres.

Our systems operate at the intersection of edge computing, sensor fusion, AI‑assisted analysis, and autonomous operation, delivering real‑time maritime situational awareness and actionable intelligence.

SRT is an exciting company where high quality results are rewarded. We are ambitious and are constantly seeking to innovate to deliver better products and services to our customers. We strive to make SRT a rewarding and challenging place to work where talented hard‑working individuals have the opportunity to make a real impact across the marine world.

About the Role

We are seeking a Senior C# Software Developer to help port and extend an existing proof‑of‑concept (PoC) system written in VB.NET. The system performs vessel detection and tracking by combining (“fusing”) AIS and radar data sources.

What You’ll Be Doing

You will play a key role in transforming this PoC into a robust, scalable, production‑grade edge platform—supporting multi‑domain sensor fusion, AI‑assisted anomaly detection, augmented reality visualization, autonomous “sentry” operations, and incident evidence capture.

What You’ll Bring

• Strong proficiency in C#, with experience developing robust, high‑performance applications.
• Background in C++, with a solid understanding of software fundamentals such as memory management, concurrency, and performance optimization.
• Demonstrable experience in at least one of the following domains:
  • Sensor data processing (radar, AIS, optical, or RF)
  • Tracking systems or sensor fusion algorithms
  • Real‑time or embedded systems
  • Understanding of networking protocols and data serialization (e.g., TCP/UDP, JSON, Protobuf).
  • Familiarity with multi‑threaded and asynchronous programming patterns.
• Ability to work effectively within an interdisciplinary engineering team.

Our Values at SRT Marine

Ambition – Aspiring to lead in maritime domain management.

Innovation – Driving improvement through creativity and forward‑thinking.

Quality – Committing to high standards in performance and reliability.

Responsibility – Being individually accountable and team‑driven.

Team – Collaborating openly with colleagues, partners, and customers.

Why Join Us?

• Work on mission‑critical maritime surveillance systems used worldwide.
• Be part of an ambitious, innovative, and supportive team.
• Make a direct impact on global maritime safety and sustainability.
• Enjoy flexible hybrid working.

SRT Marine plc is an equal opportunity employer. We are committed to creating an inclusive environment for all employees and welcome applications from all backgrounds.