Senior Systems Engineer

Company Details

In-Space Missions are world class experts who design, build and operate physical and digital space missions for global customers from our UK site.

Who are you?

As a Senior Systems Engineer with a background in an engineering discipline such as; Space, Aerospace or Automotive you will be happy to work on a range of activities from technical studies to small spacecraft systems and subsystems. You will be comfortable working as part of a team to deliver projects to a variety of customers including institutional, academic and commercial organisations.

The role requires knowledge and experience of designing, developing, building, and delivering complex technical solutions. Whilst the primary responsibilities of the role lie in project delivery, you may get involved in other areas of the business including Bid Management.

You will be willing to flex priorities to support others where necessary and be comfortable working within a fast-paced environment. You will take pride in your work and be comfortable working in a customer-facing environment, presenting to clients, suppliers and partners.

You will be educated to at least degree-level or equivalent in a relevant scientific or engineering discipline along with experience in a number of the following areas;

  • Systems Engineering on a small satellite programme, preferably across the full project lifecycle;
  • Technical delivery of complex systems, software and/or electronic hardware;
  • Spacecraft AIT and/or operations;
  • Delivery of space technology and/or space mission studies or R&D projects;
  • Technical pre-sales support and technical inputs to bids;
  • Working in and collaborating with multi-disciplinary teams;
  • Interfacing to external clients;
  • Reporting project progress to internal and external stakeholders;
  • Working with suppliers;
  • Following processes;
  • Knowledge of Space Standards (i.e. ECSS);
  • Knowledge of UK Space Industry.
  • Proficient in use of appropriate technical modelling tools (for example; STK, GMAT and/or others such as CAD software packages);
  • Proficient with MS Office Suite (Word, Excel, Powerpoint, Project);
  • Proficient in general programming, e.g. Python, Java, C/C++;
  • Excellent communicator, both written and verbal;
  • Confident working in project delivery and bid teams.

What will you be doing here?

Responsibilities will include:

  • Co-ordinating and managing technical inputs to spacecraft design and development from internal and external parties including (but not limited to):
  • Payload providers;
  • Sub-contractors and suppliers (including launch providers);
  • Users;
  • Customers;
  • Regulatory authorities.
  • Definition and/or management of requirements from Mission and System Level and derivation of technical requirements to subsystem and equipment level (with support from senior team members and specialists);
  • Management and tracking of requirements through project delivery;
  • Derivation and management of system technical budgets and margins, with support from senior team members as required, including (but not limited to):
  • Mass budget;
  • Power budget;
  • RF link budget;
  • Thermal budget;
  • Delta-V budget.
  • Management of spacecraft interfaces;
  • Supporting the definition of spacecraft test and flight harnesses and MGSE/EGSE.
  • Management and execution of Validation and Verification activities at a subsystem and system level (including lab testing).
  • Collaboration with project managers to provide inputs to schedules; risk management plans; budget management and other project artefacts as required;
  • Technical pre-sales support to prospecting and bid activities;
  • Provision of technical inputs into technical consultancy activities such as customer supports, studies and R&D projects;
  • Supporting spacecraft operations.

About In-Space Missions

In-Space Missions (ISM) are world class experts who design, build and operate space missions for global customers from our UK site. We also offer ‘Space as a Service’ by flying customer payloads on our spacecraft and by providing customers the ability to upload digital applications to operate on our hardware. ISM was founded in 2015 and has grown to comprise approximately 70 staff. The company was acquired by BAE Systems in 2021 but continues to operate as a separate business with our offices and satellite cleanrooms located in Alton, Hampshire in the UK.


We have a close-knit and supportive team, with diversity and inclusion being a key to our success. Although we are looking to rapidly expand our team, we are passionate about maintaining our small company ethos, something which is at the heart of our culture. We welcome varying backgrounds, skills, perspectives and life experiences.

What can we offer you?

  • 30 days holiday a year plus bank holidays
  • Flexible Working
  • 10% Non-Contributary Pension
  • Private medical insurance and life insurance
  • Death in Service
  • Option to join BAE Share Incentive Plan
  • A fun work environment, full of opportunities for career growth
  • Team meetups, including team-building days and office parties!
  • Access to Rewards Plus- Benefits portal offering discounts to a host of retailers

Recruitment Process

If you’ve been shortlisted for the role, our Recruitment team will reach out to schedule an initial conversation and talk you through our interview process in detail.

Additionally, if you don’t meet all of the criteria please still apply. We really enjoy meeting diverse people who might bring a fresh perspective on a problem we need to solve!

Unfortunately, we do not offer sponsorship. Only those with the permanent and unrestricted right to live and work in the UK will be considered for a position within In-Space Missions. Successful candidates for this role will be required to go through Government SC clearance.


Tagged as: systems engineering, engineering, aerospace

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