Principal Software Engineer
Posted on Jun 15, 2026 by CV-Library
Portsmouth, Hampshire, United Kingdom
IT
Immediate Start
£60k - £80k Annual
Full-Time
Principal Software Engineer
Location: Portsmouth with a hybrid working ( 3 days in the office)
Salary: From £60K - £80K, depending on experience, many benefits including pension, 25 days holiday and life insurance.
Our client is a growing software and data science consultancy, The team is dedicated to delivering high-quality, end-to-end software and data science services. This role offers the opportunity to work across multiple sectors, including defence, energy, transport, and health, and contribute to the development of cutting-edge solutions.
Our client is looking for Principal C++ Software Engineers with a range of levels of experience including designing, delivering software applications, and leading teams.
As a Principal Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy, and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders. You will be designing solutions for complex challenges that will meet and exceed user requirements.
Responsibilities re role of Principal Software Engineer will include:
Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.
Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required.
Delivering technical consulting projects and products, with the opportunity to lead some of these
Building new relationships and maintaining current customer relationships.
Qualifications/Experience required re role of Principal Software Engineer include:
Essential:
* At least 15 years’ experience in designing and implementing performant software applications.
* Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields.
* Proficient in C/C++ or C# and Python.
* Demonstratable skills in stakeholder management including influencing, negotiating and conflict management.
* Demonstratable experience and capability in writing proposals and coordinating bid management activity.
* Experience of line management and enabling people to perform.
* Extensive experience with a range of software modelling and simulation techniques.
* Experience in using cases and project data context to determine specifications and requirements.
* Experience in one or more of the following technical disciplines:
* Videogame engine technology (e.g. Unreal Engine, Godot)
* Entity or Event based Simulation
* Robotics and Autonomous Systems
* Understand varied codebases and be confident in making changes to large projects.
* Understand performance and hardware constraints.
* Building customer and stakeholder relationships.
* Supporting and leading authoring of technical reports and presenting to customers.
* Be willing to travel across UK and comfortable to work at client sites for periods.
* Desirable:
* Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry.
* The ideal candidate will be educated to degree level or have equivalent relevant experience.
* We’d love you to bring a strong STEM / computing background.
* Proficient in MS Office, especially Excel, PowerPoint, Word.
Candidates must have an existing right to live and work in the UK.
Ideally looking for candidates with current SC or DV Security Clearance.
Keywords – C++, C, Python, Defence, Modelling, Simulation, Robotics, Synthetic Environment, Autonomous Systems, Requirements Management, Unreal Engine, Godot, Simulation, Bids, Proposals, C++ Software Engineer.
Principal Software Engineer
Location: Portsmouth with a hybrid working ( 3 days in the office)
Salary: From £60K - £80K, depending on experience, many benefits including pension, 25 days holiday and life insurance.
Our client is a growing software and data science consultancy, The team is dedicated to delivering high-quality, end-to-end software and data science services. This role offers the opportunity to work across multiple sectors, including defence, energy, transport, and health, and contribute to the development of cutting-edge solutions.
Our client is looking for Principal C++ Software Engineers with a range of levels of experience including designing, delivering software applications, and leading teams.
As a Principal Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy, and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders. You will be designing solutions for complex challenges that will meet and exceed user requirements.
Responsibilities re role of Principal Software Engineer will include:
Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.
Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required.
Delivering technical consulting projects and products, with the opportunity to lead some of these
Building new relationships and maintaining current customer relationships.
Qualifications/Experience required re role of Principal Software Engineer include:
Essential:
* At least 15 years’ experience in designing and implementing performant software applications.
* Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields.
* Proficient in C/C++ or C# and Python.
* Demonstratable skills in stakeholder management including influencing, negotiating and conflict management.
* Demonstratable experience and capability in writing proposals and coordinating bid management activity.
* Experience of line management and enabling people to perform.
* Extensive experience with a range of software modelling and simulation techniques.
* Experience in using cases and project data context to determine specifications and requirements.
* Experience in one or more of the following technical disciplines:
* Videogame engine technology (e.g. Unreal Engine, Godot)
* Entity or Event based Simulation
* Robotics and Autonomous Systems
* Understand varied codebases and be confident in making changes to large projects.
* Understand performance and hardware constraints.
* Building customer and stakeholder relationships.
* Supporting and leading authoring of technical reports and presenting to customers.
* Be willing to travel across UK and comfortable to work at client sites for periods.
* Desirable:
* Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry.
* The ideal candidate will be educated to degree level or have equivalent relevant experience.
* We’d love you to bring a strong STEM / computing background.
* Proficient in MS Office, especially Excel, PowerPoint, Word.
Candidates must have an existing right to live and work in the UK.
Ideally looking for candidates with current SC or DV Security Clearance.
Keywords – C++, C, Python, Defence, Modelling, Simulation, Robotics, Synthetic Environment, Autonomous Systems, Requirements Management, Unreal Engine, Godot, Simulation, Bids, Proposals, C++ Software Engineer.
Principal Software Engineer
Reference: 225249501
https://jobs.careeraddict.com/post/113412656
Principal Software Engineer
Posted on Jun 15, 2026 by CV-Library
Portsmouth, Hampshire, United Kingdom
IT
Immediate Start
£60k - £80k Annual
Full-Time
Principal Software Engineer
Location: Portsmouth with a hybrid working ( 3 days in the office)
Salary: From £60K - £80K, depending on experience, many benefits including pension, 25 days holiday and life insurance.
Our client is a growing software and data science consultancy, The team is dedicated to delivering high-quality, end-to-end software and data science services. This role offers the opportunity to work across multiple sectors, including defence, energy, transport, and health, and contribute to the development of cutting-edge solutions.
Our client is looking for Principal C++ Software Engineers with a range of levels of experience including designing, delivering software applications, and leading teams.
As a Principal Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy, and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders. You will be designing solutions for complex challenges that will meet and exceed user requirements.
Responsibilities re role of Principal Software Engineer will include:
Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.
Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required.
Delivering technical consulting projects and products, with the opportunity to lead some of these
Building new relationships and maintaining current customer relationships.
Qualifications/Experience required re role of Principal Software Engineer include:
Essential:
* At least 15 years’ experience in designing and implementing performant software applications.
* Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields.
* Proficient in C/C++ or C# and Python.
* Demonstratable skills in stakeholder management including influencing, negotiating and conflict management.
* Demonstratable experience and capability in writing proposals and coordinating bid management activity.
* Experience of line management and enabling people to perform.
* Extensive experience with a range of software modelling and simulation techniques.
* Experience in using cases and project data context to determine specifications and requirements.
* Experience in one or more of the following technical disciplines:
* Videogame engine technology (e.g. Unreal Engine, Godot)
* Entity or Event based Simulation
* Robotics and Autonomous Systems
* Understand varied codebases and be confident in making changes to large projects.
* Understand performance and hardware constraints.
* Building customer and stakeholder relationships.
* Supporting and leading authoring of technical reports and presenting to customers.
* Be willing to travel across UK and comfortable to work at client sites for periods.
* Desirable:
* Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry.
* The ideal candidate will be educated to degree level or have equivalent relevant experience.
* We’d love you to bring a strong STEM / computing background.
* Proficient in MS Office, especially Excel, PowerPoint, Word.
Candidates must have an existing right to live and work in the UK.
Ideally looking for candidates with current SC or DV Security Clearance.
Keywords – C++, C, Python, Defence, Modelling, Simulation, Robotics, Synthetic Environment, Autonomous Systems, Requirements Management, Unreal Engine, Godot, Simulation, Bids, Proposals, C++ Software Engineer.
Principal Software Engineer
Location: Portsmouth with a hybrid working ( 3 days in the office)
Salary: From £60K - £80K, depending on experience, many benefits including pension, 25 days holiday and life insurance.
Our client is a growing software and data science consultancy, The team is dedicated to delivering high-quality, end-to-end software and data science services. This role offers the opportunity to work across multiple sectors, including defence, energy, transport, and health, and contribute to the development of cutting-edge solutions.
Our client is looking for Principal C++ Software Engineers with a range of levels of experience including designing, delivering software applications, and leading teams.
As a Principal Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy, and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders. You will be designing solutions for complex challenges that will meet and exceed user requirements.
Responsibilities re role of Principal Software Engineer will include:
Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.
Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required.
Delivering technical consulting projects and products, with the opportunity to lead some of these
Building new relationships and maintaining current customer relationships.
Qualifications/Experience required re role of Principal Software Engineer include:
Essential:
* At least 15 years’ experience in designing and implementing performant software applications.
* Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields.
* Proficient in C/C++ or C# and Python.
* Demonstratable skills in stakeholder management including influencing, negotiating and conflict management.
* Demonstratable experience and capability in writing proposals and coordinating bid management activity.
* Experience of line management and enabling people to perform.
* Extensive experience with a range of software modelling and simulation techniques.
* Experience in using cases and project data context to determine specifications and requirements.
* Experience in one or more of the following technical disciplines:
* Videogame engine technology (e.g. Unreal Engine, Godot)
* Entity or Event based Simulation
* Robotics and Autonomous Systems
* Understand varied codebases and be confident in making changes to large projects.
* Understand performance and hardware constraints.
* Building customer and stakeholder relationships.
* Supporting and leading authoring of technical reports and presenting to customers.
* Be willing to travel across UK and comfortable to work at client sites for periods.
* Desirable:
* Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry.
* The ideal candidate will be educated to degree level or have equivalent relevant experience.
* We’d love you to bring a strong STEM / computing background.
* Proficient in MS Office, especially Excel, PowerPoint, Word.
Candidates must have an existing right to live and work in the UK.
Ideally looking for candidates with current SC or DV Security Clearance.
Keywords – C++, C, Python, Defence, Modelling, Simulation, Robotics, Synthetic Environment, Autonomous Systems, Requirements Management, Unreal Engine, Godot, Simulation, Bids, Proposals, C++ Software Engineer.
Principal Software Engineer
Reference: 225249501
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