114 jobs found in Mountain Ash

Hays are now looking for an SC Cleared Software Developer for one of our local clients: £600 p/d Inside IR35 1-2 Days onsite, rest is WFH Location is Cardiff Must hold current SC Clearance You'll join an Agile delivery team, building and supporting secure, high-quality software services used by internal and external users. Working closely with testers, engineers, and researchers, you'll help deliver changes safely while supporting live systems. What You'll Be Doing Building and maintaining user-facing applications and back-end .NET API services Designing and developing secure, well-structured code using modern engineering standards Collaborating with user researchers to deliver user-centred solutions Supporting junior developers through mentoring and guidance Managing releases via CI/CD pipelines and supporting systems in production What We're Looking For Experience developing software across front-end and back-end (.NET APIs) Strong problem-solving skills and the ability to...

Operational Technology Systems Administrator/Analyst - 12 Months Contract- Day Rate £450 - £485 (Inside IR35) - Hybrid (1 Day a week South Wales) The Opportunity Yolk Recruitment Public Sector & Not-for-Profit team has partnered with a very unique nonprofit organisation who are undergoing a significant cyber and infrastructure uplift across their operational technology environment. We're looking for a hands-on System Administrator with a strong focus on security, working across critical national infrastructure. What you'll be doing Supporting a large-scale cyber programme aligned to regulatory standards (E-CAF) Managing and securing core infrastructure across: Windows & Linux servers SQL databases Cisco networks WAN and data centre environments Driving patching, vulnerability management and system hardening best practice Supporting rollout and optimisation of security tooling including EDR and intrusion detection Integrating and maintaining Active Directory and...

R&D Engineer - Lab Filtration Hours per week: 37.5 Site Location: Cardiff Rate: Negotiable (Inside IR35 via Umbrella) Duration: 12 Months Role Summary The R&D Contingent Engineer will provide hands-on mechanical engineering expertise to support the development, validation, and transfer of new and existing lab filtration products. The role focuses on prototype development, design verification, manufacturing readiness, and technical problem-solving in a regulated life sciences environment. Key Responsibilities Provide technical expertise in the development and validation of new and existing products Conduct feasibility studies, design verification, and performance testing Support prototype design, fabrication, and iterative development Lead and contribute to design reviews for new product development (NPD) Develop 2D/3D CAD models using SolidWorks Support manufacturing transfer, process validation, and supplier engagement Prepare technical reports and product...

Would you like to join our leading client who prides themselves on achieving operational excellence? -Do you want to work for one of the World’s most famous Car manufacturers driven by a team of highly competent automotive specialists based in South Wales? -Are you experienced in Materials, Planning and Logistics? If your answer is “yes,” we have the perfect job opportunity for you just here.. The Opportunity  Due to successful project growth, our leading client, a World recognised and respected Automotive OEM Manufacturer based in South Wales, are actively seeking an experienced Material Planner to join their highly successful team with immediate effect on a 3-month rolling on-going Contract basis (Inside IR35). On offer to you, is a competitive, albeit negotiable hourly rate, based on relevant experience. The Role  As the Material Planner, your role is to schedule and control the supply of components/materials to meet immediate production requirements and forward...

Contract Mechanical Shift Engineer South Wales - easy access from most locations Inside IR35 (via Umbrella) 3-6 month initial contract with likely extension Rate DOE Yolk Recruitment are supporting a well established FMCG manufacturer in South Wales with the recruitment of Contract Mechanical Shift Engineers to support their maintenance team on site. These roles are available immediately. You'll join an experienced engineering team on a busy, well invested manufacturing site. The role will involve a mix of planned preventative maintenance, reactive breakdown support and some project work, working on a range of high speed production and packaging equipment. The site has good engineering support and well equipped workshop facilities, allowing the team to carry out a large proportion of work in house. You'll work 12 hour shifts, either 6am-6pm or 6pm-6am, on a rotating pattern of 2-3 days on and off. The rota runs in two week blocks of days followed by two weeks of nights....

Job Title: Civil Operative (Dumper Operative/Groundworker) - National Grid Person & HSG47 Location: Iron Acton 132/275kV Substation, BS37 9TX. Start Date: 05/05/2026 Duration: Until 27/11/2026 Hours: 45 hours per week (07:30 - 17:30) Rate: £25 per hour Contract Type: Temporary IR35 Status: Inside IR35 (Limited Company not permitted) Positions Available: 2 Role Overview: We are currently looking for 2 x Civil Operatives (Groundworkers) to join a long-term National Grid substation project. This is a strong opportunity for experienced operatives with the right competencies to secure consistent work on a major infrastructure scheme. Requirements: Essential: National Grid Person (NG Person) Forward Tipping Dumper Ticket HSG47 (2-Day) Certification Full PPE required before starting on site Candidates without the above will not be considered. Duties will include: General groundworks within a high-voltage substation environment Excavation, duct laying, and reinstatement works Safe...

Fuel Systems Engineer 12 month contract Based in Filton Offering £57.50ph Inside IR35 Do you have experience working on Avionics Fuel Systems? Do you have experience using MATLAB, Simulink, or Stateflow for Real-Time system controlling? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Fuel Systems Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Equipment qualification - Support the review of new Equipment Design Evolution Sheets from supplier, Specification updates, and qualification of equipment due to scope creep of requirements in service Production Support - Support queries from the various production lines on items such as test...

Mechanical Design Engineer 6 month contract Based in Filton Offering £42.10ph Inside IR35 Do you have experience using CATIA V5? Do you have experience using design configuration toolsets such as PASS, DPDS, VPM, ICC, ACP? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Mechanical Design Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Contribute to the 'end-to-end' design process from conceptual design, modification process in support of maturity gates, DFM, and support to manufacturing sites Design and validation of Fuel System installation components and assemblies that are optimized in terms of weight, cost, performance,...

Supply Chain Quality Specialist 6 month contract Based in Filton Offering £40ph Inside IR35 Do you have experience dealing with suppliers and delivery of parts? Do you have experience with Practical Problem Solving methodologies such as 8D, 9S, Ishikawa, 5why, etc...? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Supply Chain Quality Specialist, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Developing and deploying APQP across Major Modifications to ensure industrial maturity Coaching and upskilling the Supply Chain Quality Managers community Supplier Continuous Improvement & Development Delivery & Quality Supplier Operation Support...

Supply Chain Quality Specialist Location: Filton (minimum 60% onsite) Contract: Contract until 31/12/2026 (extension possible) Working Pattern: 35 hours per week | 4.5-day working pattern Pay Rate:£40.00 per hour Umbrella / £29.89 per hour PAYE Clearance: BPSS (completed by the Client) IR35: Inside IR35 The Opportunity Our client is seeking an experienced Supply Chain Quality Specialist to support their UK Systems & Equipment organisation, with a strong focus on quality, supplier development and industrial maturity. This is a highly autonomous role suited to someone confident working across a complex supply chain environment, influencing stakeholders and driving continuous improvement. The role is quality-led rather than pure supply chain, with significant exposure to suppliers and operational delivery. Key Responsibilities APQP & New Product Introduction Lead APQP deployment across New Product Introduction, Major Modifications and Transfers of Work Ensure...

MERITUS are recruiting for a Supply Chain Quality Specialist to join our Aerospace client at their Filton site. SUPPLY CHAIN QUALITY SPECIALIST - INSIDE IR35 - £40 PER HOUR - UNTIL 31/12/2026 - LIKELY EXTENDED - 1 STAGE INTERVIEW PROCESS Role Summary Reporting into senior leadership within New Product Introduction (NPI), this role sits at the intersection of supply chain, quality, and industrial performance. The position is focused on driving supplier maturity, embedding structured quality frameworks, and ensuring robust delivery across complex product changes and work transfers within a high-integrity engineering environment. Key Accountabilities Lead deployment of Advanced Product Quality Planning (APQP) across new product introduction, major modifications, and transfer of work programmes to ensure industrial readiness Develop and elevate capability within the Supply Chain Quality community through coaching and structured upskilling Drive supplier performance through...

On behalf of our client, we are seeking to recruit a Supply Chain & Quality Specialist on an initial 8 -month contract. As the Supply Chain & Quality Specialist, you will need to be autonomous in supporting the UK Supply Chain Systems & Equipment's organization to continuously improve in supply chain management ways of working and developing supplier capability and maturity Role: Supply Chain & Quality Specialist Pay: £40 per hour Via Umbrella Location: Filton - 60% onsite Contract: Monday- Friday, 35 Hours per week,8 Months contract IR35 Status: Inside Security Clearance: BPSS Responsibilities Developing and deploying APQP across Major Modifications to ensure industrial maturity Coaching and upskilling the Supply Chain Quality Managers community Supplier Continuous Improvement & Development Delivery & Quality Supplier Operation Support Supporting the SCQM community to implement robust continuous improvement plans through Supplier Business...

Our client has an opportunity for a Wing Design Engineer to join them on a contract basis until October 2026. You will be responsible for ensuring the structural design meets programme airworthiness and product requirements and in line with cascaded Design Quality Assurance Criteria. Role: Wing Design Engineer Location: Filton - 60% onsite Hours: 35 hours per week Clearance: BPSS required before starting Hourly Rate: £50 per hour via Umbrella, inside IR35 What you'll be doing: Ensure the structural design meets programme airworthiness and product requirements and in line with cascaded Design Quality Assurance Criteria Define, deliver and enable technical studies, trades and investigations to ensure the delivery of technical solutions in accordance to relevant Design methods and procedures Support identification, management and delivery of change through Mod opening, DFM release and Stage 3 Closure of Mods on time, to cost and quality Provide design leadership of Internal and...

On behalf of our client, we are seeking to recruit a Design Concession Approver on an initial 5-month contract. As the Design Concession Approver You will be responsible for leading design investigations and formulating technical solutions for Manufacturing Non-Conformances and Design Investigations ensuring that all Design, Airworthiness and safety requirements are met. Where appropriate you will also liaise with other functions to ensure a fully integrated design solution. Role: Design Concession Approver Pay: £46 - £52 per hour Via Umbrella Location: Broughton Contract: Monday - Friday 35 Hours per week, 5 Months contract IR35 Status: Inside Security Clearance: BPSS Responsibilities You will operate as a lead design engineer and must hold design approval signatory in particular formanufacturing non-conformances (T200). You will also act as a focal point in leading and providingguidance on technical issues and governance and will support technical mentoring for...

Our client has an opportunity for a Fuel Systems Installation Design Engineer to join them on a contract basis until the end of 2026 with possible extension. In this role, you will have the opportunity to develop your Fuel Systems Installation Design skills across the full range of commercial aircraft as well as the opportunity to engage with a variety of customers, stakeholders and suppliers. Role: Fuel Systems Installation Design Engineer Location: Filton - 100% onsite Hours: 35 per week Hourly Rate: £42.10 per hour via Umbrella, inside IR35 Clearance: BPSS required before starting What you'll be doing: Contribute to the 'end to end' design process from conceptual design, modification process in support of maturity gates, DFM and support to manufacturing sites Design and validation of Fuel System installation components and assemblies that are optimized in terms of weight, cost, performance, production/assembly requirements while highest safety of the product is assured...

Materials Engineer Location: Filton (Hybrid - approx. 60% onsite, initially 100% for handover) Contract: Maternity cover - until March 2027 (likely extension) Working Pattern: 35 Hours per week, worked over 4.5 days (between 7am-7pm, hours agreed by the business) Pay Rate: £35.00 per hour (Umbrella) / £26.16 per hour (PAYE) Clearance: BPSS (completed by the Client) IR35: Inside IR35 The Opportunity Our client is seeking an experienced Assembly Technologies Specialist/Materials Engineer to join their Research & Technology (R&T) function. This role sits at the forefront of future manufacturing development and will play a key part in researching, developing and validating innovative assembly technologies for next‑generation aerospace production. This is a hands-on role requiring strong technical understanding of assembly processes and materials, combined with the ability to work collaboratively across multidisciplinary teams. Key Responsibilities Research, develop and...

MMP Consultancy is seeking a Head of Responsive Repairs on behalf of a Local Authority in Bristol to stabilise, improve and lead a high‑impact housing repairs service covering occupied homes and voids. This is a 6-month ongoing contract with a day rate up to £850pd inside of IR35 over a 5-day working week. Travelling to local sites and a strong office presence is essential, with working from home offered at a later stage with odd, agreed days as opposed to structure each week. This is a visible leadership role with real responsibility. The successful candidate will own day‑to‑day repairs performance, contractor delivery, customer experience and standards for re‑lets while shaping longer‑term service improvement. Responsibilities: Deliver all aspects of a responsive housing repairs service including the improvement of empty homes. Includes surveying, works diagnostics, scheduling, contractor management and customer care. Lead service area and work as part of Housing Service...

PMO Specialist £418.60 Per Day, Inside IR35 Bristol Hybrid 6 Months Contract Your new company A large organisation based in Bristol. Your new role This role will be critical to the success of key Strategic Portfolios by bringing structure to a complex set of works. The Networks PMO is a delivery focused PMO that supports projects to achieve the best outcomes for all our customers. Strategic Portfolio Management:Support the Portfolio Director in structuring and aligning the portfolio and programmes with strategic objectives, including effective collaboration with Delivery Directors. Portfolio Insight Management:Drive the development and execution of strategic plans to increase portfolio value and deliver excellence, providing actionable insights and recommendations that enhance decision-making and maximise outcomes. Stakeholder Engagement and Communication:Engage proactively with key stakeholders-Portfolio Directors, Programme Managers, Project Management Community,...

World Class Defence Organisation is currently looking to recruit a Verification and Validation Systems Engineering Specialist subcontractor on an initial 12 month contract.  Rate: £85.00 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: The role will be a hybrid role of on average 2 days per week onsite Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) V&V Systems Engineering Specialist Job Description: The Test & Evaluation team are looking for a V&V Systems Engineering Specialist to operate with a high-level of technical responsibility for the entire lifecycle of our product, ranging from design and development to qualification and deployment. A specialist will bridge the gap between design and production, ensuring that complex,...

Location: Bristol (fully onsite) Duration: 12 month initial contract Rate: £68ph UMB (Inside IR35) Role details: Our client, a key player in the Defence & Security sector, is currently seeking an SC Cleared, Embedded Ada Software Engineer to join their team on a contract basis in Bristol. This is an exciting opportunity to be involved in the development of cutting-edge command and control software for maritime missile systems. Key Responsibilities: Engaging with the Systems team to discuss requirement changes and updates Participating in the entire software engineering lifecycle Ensuring high standards in coding, process, and documentation for safety-critical software Involvement with qualification and software releases Supporting the development of advanced maritime air defence systems Job Requirements: Proficiency in Ada programming Security Clearance (SC) required to start Strong background in safety-critical software, ideally within defence, aerospace, rail, nuclear...