HPC Optimisation Scientific Software Engineer

Job Introduction

We’re looking for an exceptional HPC Optimisation Scientific Software Engineer to help us make a difference to our planet. 

As our HPC Optimisation Scientific Software Engineer, the job may be suitable for hybrid working, which is where an employee works part of the week in the office and part of the week from home. This is a voluntary, non-contractual arrangement and the location advertised will be your contractual place of work.

Our opportunity is full time, 37 hours per week. Our people are at the heart of what we do and we'll do our best to agree a working pattern that works for everyone. 

World changing work 

From science to technology, from meteorology to management, and from planning to communication, our expertise helps us stand out as the authority on weather accuracy and climate prediction. We help individuals, industries and government to make better decisions to stay safe and thrive. This is the Met Office. This is who we are. 

• We’re a force for good - focusing on our environmental and social impact
• We’re experts by nature - always learning and developing to do things better
• We live and breathe it - putting our purpose at the heart of decision-making
• We’re better together - understanding partnerships and inclusivity make us greater
• We keep evolving - pushing boundaries to make tomorrow better for our customers

Your world of expertise 

As a HPC Optimisation Scientific Software Engineer you will contribute to the development, support, and optimisation of large-scale parallel climate and weather applications on HPC systems.

We are currently in a major push to develop our Next Generation Modelling Systems, to help exploit our new world-leading supercomputer capability and to support our adoption of data science (specifically artificial intelligence and machine learning) across our national capability, and you will be working towards these objectives in some form.

The Scientific Software Engineer (SSE) role is a varied one, with many opportunities for development, progression and finding new challenges both within the SSE career family and beyond.

Being a Scientific Software Engineer is about far more than just technical skills – you will need to be able to work alongside colleagues in a range of areas, both technical and scientific. We frequently require our SSEs to collaborate internally and internationally. 

Your key duties:

• Analyse and optimise the performance of large-scale scientific applications.
• Benchmark scientific applications on current and future supercomputer hardware. 

• Support the analysis and tuning of operational scientific workloads on the supercomputer, working with the teams responsible for those workloads.

• Support users in diagnosing and resolving HPC performance and technical issues

• Develop novel software, tools and methods to improve the performance, scalability and portability of large-scale scientific applications on current and future HPC architectures.

• Collaborate with and provide technical expertise to scientific and technical colleagues in the development and improvement of HPC applications.
• Maintain, extend and share expertise in optimisation tools, parallel programming techniques and algorithms, and current and future supercomputer capabilities.

Why join us 

Our work is life-changing, often life-saving and always life-enhancing. The Met Office is Great Place to Work UK certified. We are also featured on their ‘Best Workplaces in Tech’ 2023, 2024 and 2025 lists, as well as their ’54 Best Workplaces for Women’ 2023 list.

As our HPC Optimisation Scientific Software Engineer, your total reward package will be up to £53,325 annually, which includes:

• £36,375 base pay
• An outstanding Civil Service pension, with an average employer contribution of 28.97%
• Recruitment Retention Allowance (RRA) you will be paid £2,200 per annum as a market supplement to reflect the demand for your skills. Whilst in post, you will be paid this market driven allowance from April 2026 until March 2027 in your monthly pay
• Annual Leave starting at 27.5 days (plus Bank Holidays) rising to 32.5 days (plus Bank Holidays) after 5 years and option to buy or sell up to 5 days per year of annual leave

Essential Criteria, skills and experience: 

1. Lead Criteria: Demonstrate knowledge and experience of High-Performance Computing (HPC) software development through delivering new capabilities for distributed and/or shared-memory scientific applications. (We’re Experts by Nature)
2. Engage effectively with stakeholders to understand requirements and the wider context of your work. Contribute significantly to developing plans that meet these requirements. (We’re Experts by Nature, Better Together)
3. Proactively apply good Quality Assurance processes, best practice, standards and/or regulations to all aspects of your work to achieve the agreed standard. (We’re Experts by Nature, We Live and Breathe it)
4. Communicate knowledge accurately and concisely through written communication and group discussions, adapting your communication to meet the needs of diverse audiences and build trust and credibility. (We’re Better Together)
5. Proactively develop your skills and support others to develop theirs, contributing to improved outcomes and the development of others. (We Keep Evolving, Better Together, Experts by Nature)

The panel may perform a preliminary sift of the lead criteria as indicated above.

How to apply 

If you share our values, we’d love to hear from you! Click apply to begin your application. Please complete your career history and provide evidence against each of the essential criteria in the supporting statement questionnaire. We recommend candidates use the CARL method (Context, Action, Result and Learning) for presenting evidence of experience and skills. 

Please note: We are currently recruiting for 1 role which is being advertised at 2 levels (Scientific Software Engineer and Senior Scientific Software Engineer). Those wishing to be considered at multiple levels should submit an application at each level.

Closing date 22/11/2026 at 23:59 with first stage interviews commencing from 07/12/2026. You will hear from us once the closing date has passed. 

Using AI in your application

We welcome applications that use AI tools for support in drafting or refining, as long as they accurately reflect your own skills and experience. All hiring decisions at the Met Office are made by people, not AI. For more details, visit our approach to recruitment.

How we can help 

If you have any questions or would like to discuss this opportunity further, please contact us at careers@metoffice.gov.uk.  

If you’re considering applying and need support to do so, please get in touch. You can request adjustments either within your application or by contacting us. Should you be offered an interview, please be aware there may be a selection exercise which could include a presentation, written test or a scenario-based activity. You can select in your application to be considered under the Disability Confident Scheme. To be invited to interview/assessment under this scheme, your application must meet the essential criteria for the role. 

We understand that great minds don’t always think alike and as an equal opportunities employer we welcome applications from those with all protected characteristics. We recruit on merit, fairness, and open competition in line with the Civil Service Code. 

We can only accept applications from those eligible to live and work in the UK - please refer to GOV.UK for information. We require Security clearance without caveats and/or restrictions for this role, for which you need to have resided in the UK for at least 3 of the last 5 years to be eligible, 2 of these years must be immediately preceding the point of your application.

If you feel that your application has not been treated in accordance with the Recruitment Principles, and wish to make a complaint, then in the first instance you should contact us at: careers@metoffice.gov.uk If you are not satisfied with the response that you receive, then you can contact the Civil Service Commission at: info@csc.gov.uk