Software Architect

Job Title - Software Architect Job Location - Tewkesbury, UK Flexible, condensed or reduced working hours considered and hybrid working where possible. Job ID - 19409 About this opportunity and L3Harris UK From 11 UK sites, our team of nearly 1,000 people delivers unique capabilities across space, air, land, sea and cyber for military, security and commercial customers across the UK and worldwide. L3Harris in Tewkesbury and Fleet form part of our ICI division. In the land domain, our T7 and T4 multi-mission robots deliver next-generation remote capabilities and uncompromised performance. We design and manufacture world-leading land force protection systems, cyber and electromagnetic activities (CEMA), electronic warfare (EW) and encryption capabilities. Our cyber capabilities provide an information advantage in the fields of kinetic conflict, cyber warfare, force protection and counterterrorism. We are seeking a Software Architect or an experienced Software Engineer with a passion for software architecture and a proven track record of technical excellence to design and develop innovative, cutting-edge systems. This role offers the opportunity to shape software solutions that prioritize performance, reliability, and scalability, while remaining hands-on throughout the development lifecycle. Depending on your expertise, you may contribute to our internal Electronic Warfare, Integrated Air & Missile Defence or Information Resilience portfolios. Alternatively, you could be collaborating with a high-concept team working on next-generation cryptographic solutions, safeguarding data at the highest levels of National Security. Please note that although hybrid working may be available, this is dependent on specific projects, and as such may change from time to time. As a result, we cannot guarantee hybrid or remote working for this role. The successful candidate must be capable of full-time on-site presence at our Tewkesbury facility. We welcome applications from individuals who bring diverse skills and experiences. If you are passionate about this role and believe you can make a meaningful contribution, we encourage you to apply, even if you don't meet every requirement. We value a commitment to growth and are open to potential. A few of our employee benefits are:

• £3,000 to £6,000 DV Bonus - please note this level of clearance isn't essential for this role. This bonus is subject to individual clearance and project requirements - discussed upon application.
• Flexible, condensed or reduced working hours available, i.e. 4-day condensed working week, 9-day fortnights,12pm finish every Friday, etc.
• Half day finish on a Friday
• 25 days holiday per year (plus bank holidays), increasing with long service and with the opportunity to buy/sell up to 5 days
• Private medical insurance with optional family cover
• Pension scheme of up to 7% employer contribution
• Life Assurance 4x salary (flexible up to 10x)
• Group income protection
• Flexible opt-in extras such as a health care cash plan, dental insurance, gym membership, critical illness cover and cycle to work scheme
• Employee assistance program providing mental health and wellbeing support
• Professional registration with the IET (Engineers only)
What the role will involve Your role may involve individual contributor tasks, Scrum Master responsibilities, or both, depending on the projects you are assigned to. The responsibilities of your role will include the following:
• Applying your software expertise as an individual contributor to help develop complex software systems or taking on Software Architect responsibilities to define and shape solutions;
• Collaborating with cross-functional teams to define functional and non-functional requirements for embedded and/or user interface software projects;
• Creating of high-level architectural designs, addressing system integration, real-time constraints, resource limitations, hardware errata, etc;
• Creating of lower-level design, implementation and test solutions, in line with the defined architecture;
• Helping to guide the selection of appropriate technologies and tools in collaboration with DevOps engineers;
• Supporting and promoting adherence to coding standards, best practices, planning documentation, procedures for software development and delivery, and continuous improvement initiatives;
• Providing technical guidance and mentorship to software engineers;
• Ensuring team members are working with a clearly defined and well-understood software architecture;
• Meeting cost and schedule targets while contributing to technical reviews, bids & proposals, budget & schedule discussions, customer engagement activities.
What you'll bring The role requires the following experience and skills:
• Proficiency in C++, preferably embedded C++;
• Experience of Rust is very desirable;
• Knowledge of other languages such as C, C# JavaScript, Python, etc;
• Proficiency in either back-end development (e.g. Spring Boot, MongoDB, Java) OR front-end development (e.g. HTML5, CSS, JavaScript, React.js, Node.js, ASN.1, RESTful APIs / JSON / HTTP);
• Experience with DevOps tools and practices (e.g. containerisation / Docker, Kubernetes, Kafka, micro service architecture, version control (e.g. Git / GitLab), continuous assurance / CI/CD and associated best practice);
• Strong object-oriented design and programming skills (OOD, OOP);
• Familiarity with development methodologies (e.g. V-model, Waterfall, Agile);
• Proficiency with tools like Jira and Confluence;
• A proven track record of delivering reliable, maintainable software across the lifecycle, including peer review;
• Strong communication, documentation and organisational skills;
• A degree (or equivalent experience) in Computer Science, Software Engineering, or a related field.
Desirable Skills
• Experience with Linux development environments;
• Experience architecting software systems that interface with hardware;
• Experience with the Angular framework;
• Familiarity with any of .NET Core, TypeScript, RxJS, NPM;
• Understanding of Agile methodologies, including Scrum or SAFe;
• Demonstrated ability to document, plan and manage software team activities;
• Experience of setting up, monitoring and reporting appropriate metrics throughout the software project lifecycle.
Important to know Due to the nature of our work many our roles require a UK nationality and the ability to obtain a security clearance. Applicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks. As an equal opportunities employer, L3Harris is committed to the equal treatment of all current and prospective employees and does not condone discrimination on the basis of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or belief, gender identity, or marriage and civil partnership. We aspire to have a diverse and inclusive workplace and strongly encourage suitably qualified applicants from a wide range of backgrounds to apply and join L3Harris. #LI-RT1 #SeniorSoftwareEngineer

We are seeking a Software Architect or an experienced Software Engineer with a passion for software architecture and a proven track record of technical excellence to design and develop innovative, cutting-edge systems. This role offers the opportunity to shape software solutions that prioritize performance, reliability, and scalability, while remaining hands-on throughout the development lifecycle. Depending on your expertise, you may contribute to our internal Electronic Warfare, Integrated Air & Missile Defence or Information Resilience portfolios. Alternatively, you could be collaborating with a high-concept team working on next-generation cryptographic solutions, safeguarding data at the highest levels of National Security. Please note that although hybrid working may be available, this is dependent on specific projects, and as such may change from time to time. As a result, we cannot guarantee hybrid or remote working for this role. The successful candidate must be capable of full-time on-site presence at our Tewkesbury facility.,
• Proficiency in C++, preferably embedded C++;
• Experience of Rust is very desirable;
• Knowledge of other languages such as C, C# JavaScript, Python, etc;
• Proficiency in either back-end development (e.g. Spring Boot, MongoDB, Java) OR front-end development (e.g. HTML5, CSS, JavaScript, React.js, Node.js, ASN.1, RESTful APIs / JSON / HTTP);
• Experience with DevOps tools and practices (e.g. containerisation / Docker, Kubernetes, Kafka, micro service architecture, version control (e.g. Git / GitLab), continuous assurance / CI/CD and associated best practice);
• Strong object-oriented design and programming skills (OOD, OOP);
• Familiarity with development methodologies (e.g. V-model, Waterfall, Agile);
• Proficiency with tools like Jira and Confluence;
• A proven track record of delivering reliable, maintainable software across the lifecycle, including peer review;
• Strong communication, documentation and organisational skills;
• A degree (or equivalent experience) in Computer Science, Software Engineering, or a related field.
Desirable Skills
• Experience with Linux development environments;
• Experience architecting software systems that interface with hardware;
• Experience with the Angular framework;
• Familiarity with any of .NET Core, TypeScript, RxJS, NPM;
• Understanding of Agile methodologies, including Scrum or SAFe;
• Demonstrated ability to document, plan and manage software team activities;
• Experience of setting up, monitoring and reporting appropriate metrics throughout the software project lifecycle.
Important to know Due to the nature of our work many our roles require a UK nationality and the ability to obtain a security clearance. Applicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks.

From 11 UK sites, our team of nearly 1,000 people delivers unique capabilities across space, air, land, sea and cyber for military, security and commercial customers across the UK and worldwide. L3Harris in Tewkesbury and Fleet form part of our ICI division. In the land domain, our T7 and T4 multi-mission robots deliver next-generation remote capabilities and uncompromised performance. We design and manufacture world-leading land force protection systems, cyber and electromagnetic activities (CEMA), electronic warfare (EW) and encryption capabilities. Our cyber capabilities provide an information advantage in the fields of kinetic conflict, cyber warfare, force protection and counterterrorism.


• £3,000 to £6,000 DV Bonus - please note this level of clearance isn't essential for this role. This bonus is subject to individual clearance and project requirements - discussed upon application.
• Flexible, condensed or reduced working hours available, i.e. 4-day condensed working week, 9-day fortnights,12pm finish every Friday, etc.
• Half day finish on a Friday
• 25 days holiday per year (plus bank holidays), increasing with long service and with the opportunity to buy/sell up to 5 days
• Private medical insurance with optional family cover
• Pension scheme of up to 7% employer contribution
• Life Assurance 4x salary (flexible up to 10x)
• Group income protection
• Flexible opt-in extras such as a health care cash plan, dental insurance, gym membership, critical illness cover and cycle to work scheme
• Employee assistance program providing mental health and wellbeing support
• Professional registration with the IET (Engineers only)