Software Engineer

Hybrid

Hertfordshire, United Kingdom

Full Time

03-04-2025

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Job Specifications

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, 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

SII are seeking an experienced and motivated Software Engineer to join our dynamic team working on cutting-edge space programmes. This role will involve developing, testing, and validating software solutions for space applications.

KEY RESPONSIBILITIES:

Develop, review, and maintain Software Requirements Specifications (SRS).
Execute Requirements-Based Validation (RB Validation) to ensure software meets requirements.
Address Non-Sufficient Verification Failures (NSVF) and improve verification processes.
Create UML diagrams for system design and documentation.
Write and maintain software code in languages like C++, Java, or Python.
Develop and execute unit tests to validate software components.
Conduct Technical Specification Validation (TS Validation) to ensure adherence to technical standards.
Collaborate with cross-functional teams for seamless integration.
Maintain detailed documentation for designs, tests, and validations.
Ensure compliance with industry standards (e.g., DO-178C, ECSS).

SKILLS REQUIRED:

Expertise in SRS, RB Validation, and NSVF management.
Proficiency in UML modeling for system design.
Strong coding skills in C++, Java, Python.
Experience in unit testing and TS Validation.
Excellent collaboration and problem-solving skills.
Attention to detail and commitment to software quality.

EXPERIENCE REQUIRED:

Degree in Computer Science, Software Engineering, Aerospace Engineering, or related field.
5+ years of experience in software engineering, preferably in aerospace or space projects.
Hands-on experience with SRS, RB Validation, and NSVF management.
Proficient in coding (C++, Java, Python) and UML modelling.
Experience with unit testing, TS Validation, and space industry standards (e.g., DO-178C, ECSS).
Proven ability to work in multidisciplinary teams.

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

About the Company

SII is a leading & trusted technology partner with over 10000+ professionals on-board. We strive to provide high value-added solutions for many large blue-chip corporations in which, SII have been supporting for more than 40 years. The Group relies upon our team of invaluable Engineers & Subject Matter Experts utilizing cutting edge technology whilst working alongside essential quality standards to carry out its activities in the following industries (not limited to): • Aerospace & Defence • Transportation • Telecommunicati... Know more

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