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- Tasks: Design and deliver reliable, high-integrity systems in a collaborative team.
- Company: SII Group UK is a leading provider of digital services and engineering solutions.
- Benefits: Enjoy competitive salary, flexible working, private medical insurance, and continuous professional development.
- Why this job: Join a supportive culture that values quality, safety, and diverse perspectives.
- Qualifications: 5+ years in software engineering with expertise in C/C++ and safety-critical systems.
- Other info: Mentoring opportunities and a chance to shape secure system architecture.
The predicted salary is between 43200 - 72000 ÂŁ per year.
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SII Group delivers Digital Services, IT, Engineering, and Consulting to diverse industries, enabling digital transformation through our commitment to Growth, People, and CSR.
With over 16,000 professionals across 21 countries, we’re recognised as a “Great Place to Work” for fostering a high-trust culture. Our core values of Trust , Commitment, Accountability, Passion, Creativity, and Transparency drive our work package delivery, ensuring we meet and exceed client expectations as a committed partner.
Since 2016, SII UK has supported top Aerospace & Defence, Aviation, Transportation, and Finance clients, empowering digital transformation with industry-leading engineering expertise. Let’s Tech Together is our promise to encourage innovation and teamwork. We support our engineers with development opportunities and a collaborative, inclusive environment where every voice is valued and empowered.
#Let\’sTechTogether
THE OPPORTUNITY
We\’re looking for an experienced and thoughtful software engineer to help design and deliver reliable, high-integrity systems at scale. You\’ll be working within a multidisciplinary team on distributed systems that operate in safety-critical environments. This is a role that combines strong technical ability with attention to detail and a proactive mindset. If you take pride in building dependable software, enjoy contributing to robust engineering practices, and value working alongside others who care about quality and safety, this could be the perfect fit for you. We welcome applicants who enjoy mentoring, collaborative problem solving, and continuous improvement.
EXPERIENCE AND SKILLS:
Software Engineer – Safety-Critical & Distributed Systems
What you’ll bring to the team:
- Ability to obtain SC Clearance with no caveats, or already in possession of this
- Availability for 5 days on-site preferred, with flexibility for 3 days on-site once established in the role
- Proven experience designing large distributed systems
- At least 5 years\’ experience in professional software engineering
- Solid programming expertise in C/C++
- Additional experience working with Java in complex environments
- Understanding of safety-critical or safety-related software systems, Experience with standards such as IEC 61508 (preferred), or IEC 62304 / IEC 26262
- Strong knowledge of high-integrity coding practices including unit testing and static analysis
- Experience with structured software development lifecycles for regulated systems
- Confidence in writing and maintaining clear technical documentation
- Familiarity with Software Failure Mode and Effects Analysis (FMEA)
- Background in defence or secure systems is a huge bonus
- Hands-on experience using Requirements Management tools such as DOORS or Polarion
Desirable Experience:
- Understanding of UML and software modelling methods
- Knowledge of embedded systems
- Further experience in the defence industry
- Familiarity with Atlassian tools such as Jira, Confluence, and Bitbucket
- Experience working in virtualisation and containerised environments
- Understanding of IP networking protocols
- Exposure to CI/CD pipelines and tools like Jenkins or JFROG Artifactory
Why join us? We believe great engineering happens in supportive, well-balanced teams. You’ll work alongside people who are passionate about quality and safety, and who value each other’s contributions. Whether you’re mentoring others, deepening your own expertise, or shaping the architecture of secure systems, your work will have a meaningful impact. We foster an environment where diverse perspectives are encouraged and respected, because we know that innovation thrives when everyone has a voice. Think you meet some but not all the criteria? Please feel free to still apply and we can take your CV in to consideration.
BENEFITS:
- Competitive Basic Salary
- 6% Employers Contribution + 6% as a salary sacrifice
- Private Medical Insurance, Life Cover and Income Protection
- 25 days holiday
- 5 days full sick pay per year
- Flexible working
- Cycle to Work & TechScheme
- Continuous professional development
- Corporate access to the Udemy platform
- If you\’re applying for a role requiring security clearance, please be aware that foreign or dual nationality is not an automatic bar, however certain posts may have restrictions which could affect those who do not have sole British nationality or who have personal connections with certain countries outside the UK.
Seniority level
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Seniority level
Mid-Senior level
Employment type
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Employment type
Full-time
Job function
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Job function
Engineering and Information Technology
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Industries
IT Services and IT Consulting
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Software Architect employer: SII Group UK
Contact Detail:
SII Group UK Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Software Architect
✨Tip Number 1
Familiarise yourself with the specific technologies and methodologies mentioned in the job description, such as C/C++, Java, and safety-critical systems. This will not only help you during interviews but also demonstrate your genuine interest in the role.
✨Tip Number 2
Engage with current employees or alumni from SII Group UK on platforms like LinkedIn. Ask them about their experiences and insights into the company culture, which can give you an edge in understanding what they value in a candidate.
✨Tip Number 3
Prepare to discuss your experience with distributed systems and safety-critical software in detail. Be ready to share specific examples of projects you've worked on that align with the responsibilities of the Software Architect role.
✨Tip Number 4
Showcase your collaborative skills by discussing any mentoring or teamwork experiences you've had. Highlight how you’ve contributed to a positive team environment, as this aligns with SII Group's emphasis on collaboration and innovation.
We think you need these skills to ace Software Architect
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights relevant experience in software engineering, particularly with safety-critical and distributed systems. Emphasise your programming skills in C/C++ and any experience with Java, as well as your familiarity with standards like IEC 61508.
Craft a Strong Cover Letter: In your cover letter, express your passion for building reliable software and your commitment to quality and safety. Mention specific projects or experiences that demonstrate your ability to work in multidisciplinary teams and your proactive mindset.
Highlight Relevant Skills: Clearly outline your technical skills, especially those mentioned in the job description, such as high-integrity coding practices, unit testing, and experience with Requirements Management tools. This will show that you meet the criteria SII Group is looking for.
Show Enthusiasm for Teamwork: SII Group values collaboration and mentoring. Make sure to include examples of how you've worked effectively in teams, mentored others, or contributed to a positive team culture in your previous roles.
How to prepare for a job interview at SII Group UK
✨Showcase Your Technical Expertise
Be prepared to discuss your experience with designing large distributed systems and your programming skills in C/C++. Highlight any projects where you've implemented high-integrity coding practices, as this will resonate well with the interviewers.
✨Understand Safety-Critical Systems
Familiarise yourself with safety-critical software standards like IEC 61508 or IEC 62304. Be ready to explain how you have applied these standards in your previous roles, as this knowledge is crucial for the position.
✨Demonstrate Collaborative Problem Solving
Since the role involves working within a multidisciplinary team, share examples of how you've successfully collaborated with others to solve complex problems. This will show that you value teamwork and can contribute positively to their culture.
✨Prepare Questions About Company Culture
Research SII Group's core values and be ready to ask insightful questions about their commitment to growth, people, and CSR. This demonstrates your genuine interest in their work environment and aligns with their focus on fostering a high-trust culture.
