Senior Software Engineer

SII Group UK; England; On-site; GBP 50,000 - 80,000; Full time

Job summary

An established industry player is seeking a Senior Software Engineer to work on advanced satellite payload software. This role focuses on developing the Routing Algorithm, a critical component for customer-specific route creation. You will collaborate with multidisciplinary teams, ensuring high-quality solutions while adhering to stringent performance and reliability standards. The company fosters a culture of innovation and teamwork, providing development opportunities in a supportive environment. If you have a passion for technology and want to make a significant impact in the aerospace and defense sectors, this opportunity is perfect for you.

Benefits

Competitive Basic Salary

Private Medical Insurance

Life Cover

Income Protection

25 days holiday

Flexible working

Cycle to Work Scheme

Continuous professional development

Corporate access to Udemy

Qualifications

• Expertise in C for developing complex algorithms in real-time systems.
• Strong experience with Linux environments and unit testing.

Responsibilities

• Design and optimize the Routing Algorithm in C.
• Collaborate with teams for successful integration of software.

Skills

C Programming

Linux

Unit Testing

Real-time Systems

Problem-solving

Education

Bachelor's Degree in Computer Science

Master's Degree in Engineering

Job description

Join to apply for the Senior Software Engineer role at SII Group UK

1 week ago Be among the first 25 applicants

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 recognized as a “Great Place to Work” for fostering a high-trust culture. Our core values of Trust, Transparency, and Quality 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.

THE OPPORTUNITY

We are seeking a highly skilled Senior Software Engineer to work on advanced satellite payload software. This role focuses on the Routing Algorithm (RA), a core component driving the processing and decision control for customer-specific route creation. You will work closely with both Software and Hardware teams to deliver high-quality, efficient solutions.

KEY RESPONSIBILITIES:

• Design, implement, and optimize the Routing Algorithm (RA) in C, ensuring adherence to existing code standards and minimizing system impact.
• Collaborate with multidisciplinary teams, including Software and Hardware engineers, to ensure the successful integration of RA within the payload software framework.
• Analyze and understand complex, real-time systems to refine existing solutions.
• Perform rigorous testing, debugging, and validation of RA implementations to meet performance and reliability requirements.
• Develop and execute unit tests and other verification activities to ensure robust functionality of the flight code.
• Document design decisions, implementation details, and testing outcomes to facilitate knowledge sharing across teams.

REQUIRED SKILLS AND EXPERIENCE:

• Programming: Expertise in C for developing complex algorithms in real-time systems.
• Operating Systems: Strong experience with Linux environments.
• Testing: Hands-on experience with unit testing, design validation, and test execution.
• Flight Code Development: Familiarity with the unique requirements and constraints of flight software for satellite systems.
• Design and Implementation: Proven ability to design, implement, and optimize solutions in high-performance environments.
• Experience with legacy codebases, with an emphasis on impact analysis and optimization.
• Strong understanding of software-hardware interactions in embedded systems.
• Excellent problem-solving skills and a detail-oriented mindset.

PREFERRED QUALIFICATIONS:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• Familiarity with satellite communication protocols and systems.
• Experience in Agile development environments.

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.

  http://www.groupe-sii.com/en

  Seniority level

  • Mid-Senior level

  Employment type

  • Full-time

  Job function

  • Engineering and Information Technology
  • Industries: IT Services and IT Consulting

  Referrals increase your chances of interviewing at SII Group UK by 2x

  Get notified about new Senior Software Engineer jobs in Hertfordshire, England, United Kingdom.

  Stevenage, England, United Kingdom 2 months ago

  Letchworth, England, United Kingdom 2 weeks ago

  Stevenage, England, United Kingdom 5 days ago

  Hertfordshire, England, United Kingdom 1 week ago

  Stevenage, England, United Kingdom 1 month ago

  Senior Java Developer, Trilogy (Remote) - $60,000/year USD

  Stevenage, England, United Kingdom $30.00-$30.00 5 days ago

  Stevenage, England, United Kingdom 2 months ago

  Hertfordshire, England, United Kingdom 2 days ago

  Senior Software Engineer (Python/ Automation)

  Kings Langley, England, United Kingdom 6 days ago

  Hemel Hempstead, England, United Kingdom 3 weeks ago

  Hertford, England, United Kingdom 5 days ago

  Staff/Principal Software Engineer (Python/Automation)

  Kings Langley, England, United Kingdom 6 days ago

  Hatfield, England, United Kingdom 1 week ago

  Kings Langley, England, United Kingdom 2 weeks ago

  Senior Software Engineer (Testing/ Quality Assurance)

  We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.