Software Engineer C++

Octagon Group; Watford; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

Octagon Group is seeking a Senior Software Engineer (C/C++) in Stevenage, Hertfordshire, with a hybrid working model. You will join a collaborative R&D team to deliver high-performance software that meets real-world customer requirements.

The role emphasizes designing and maintaining complex backend systems, translating requirements into scalable designs, and mentoring junior engineers while collaborating with product and cross-functional teams.

Qualifications

• Degree in Computer Science, Software Engineering, or similar.
• 5+ years of software development experience.

Responsibilities

• Design, develop, and maintain complex backend software with end-to-end ownership.
• Translate requirements into scalable system designs.
• Contribute to architecture and product evolution.
• Develop high-quality, performant software to deadlines.
• Collaborate with product owners and cross-functional teams.
• Support testing and quality assurance activities.
• Mentor and support junior engineers.

Skills

C/C++

Python

Linux

Network programming

Multithreading

Object-oriented design

Mentoring

Communication

Education

Bachelor's degree in Computer Science / Software Engineering

Tools

GCC

GDB

Job description

Senior Software Engineer (C/C++) - Stevenage, Hertfordshire

Hybrid - Stevenage

A leading technology company developing cutting-edge test & measurement solutions for global networks is looking for a Senior Software Engineer (C/C++) to join its growing R&D team.

You’ll be part of a collaborative, multi-disciplinary environment, working closely with product, sales, and marketing teams to turn real-world customer requirements into high-performance, innovative software solutions. This is a fantastic opportunity to work on complex systems within a fast-paced, product-focused environment.

The Role - Senior Software Engineer (C/C++) - Stevenage, Hertfordshire

• Design, develop, and maintain complex backend software solutions with full end-to-end ownership
• Translate high-level requirements into scalable, maintainable system designs
• Contribute to system architecture and ongoing product evolution
• Develop high-quality, performant software to agreed timescales
• Collaborate closely with product owners and cross-functional teams
• Support testing and quality-focused activities to ensure excellent product delivery
• Mentor and support junior engineers within the team

Key Skills & Experience - Senior Software Engineer (C/C++) - Stevenage, Hertfordshire

• Degree in Computer Science, Software Engineering, or similar
• 5+ years’ experience in software development
• Strong C/C++ programming and object-oriented design skills
• Experience working in a Linux environment (GNU tools such as gcc, gdb)
• Network programming and multithreading experience
• Python programming knowledge
• Proven ability to break down complex problems and deliver solutions
• Experience mentoring or supporting other engineers
• Strong communication and collaboration skills