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Contractor 6
Inside IR35 senior software developer

6 senior software developer jobs found

CL
May 28, 2026  
Senior Software Engineer in Test
Senior Software Engineer in Test  Certain Advantage are recruiting on behalf of our globally renowned brand for a Senior Software Engineer in Test. This is a temporary contract inside IR35 initially until March 2027 working a couple of days onsite per month in Manchester for meet ups. We’re seeking Engineers who can offer demonstrable experience in developing and testing bespoke cloud-native applications; programming with Java, Python (or another OO language) utilising quality tools like SonarQube, with proven experience of automated software testing. If you embrace quality-first coding and want to work on real projects alongside experienced engineers with iterative and agile processes, please apply! Key Responsibilities Define and implement testing for cloud systems (platform and APIs) in an agile manner Implement testing frameworks; utilising automation tools where possible. Support the investigate and resolution of issues. Work closely with the SRE team to develop...
IR35 Status:
Inside IR35

CV-Library Manchester, UK Contractor
CL
Apr 16, 2026  
DevSecOps Consultant
DevSecOps Consultant * Sheffield (3 days per week onsite) * Inside IR35 We're partnering with a leading financial services client to appoint a DevSecOps Consultant to drive secure engineering practices across large-scale, cloud-based platforms. This role is ideal for someone who has come from a hands-on DevSecOps Engineering background and has since transitioned into architecture/design and advisory, while still retaining strong technical depth. Key Responsibilities: * Define and implement secure architecture patterns across engineering platforms (CI/CD, build systems, runtime environments) * Conduct security assessments, threat modelling, and gap analysis across platforms and pipelines * Develop and embed DevSecOps best practices, including secure pipeline design and automated controls * Establish and enforce security baselines using policy-as-code * Build and deliver security roadmaps, prioritising risk and regulatory requirements * Partner with engineering and...
IR35 Status:
Inside IR35

CV-Library S1, Orchard Square, Sheffield Contractor
CL
Jun 18, 2026  
Estates Technical Services Manager - SC
Role: Estates Technical Services Manager - SC Contract Length: 24 Months Location: Salisbury (4 days/week on site) IR35: Inside Rate: £635/day Security Clearance: SC & Sole Uk national Responsibilities: Working across engineering risk management, safety critical systems, and hazard based approaches. Successfully engaging in contract and supplier relationships in a complex shared service environment. Work to ensure compliance across the business and demonstrate to key stakeholders a safe and compliant estate. Deliver Asset Management for both fixed assets and non-fixed assets, the legislation and compliance covering these assets. Understanding of fault-finding processes, root-cause analysis and development of engineering controls for long-term fixes Essential: NVQ Level 3 – Heating & Ventilation or equivalent Strong technical knowledge of building services engineering, including, mechanical, HVAC and BMS systems. Knowledge of Health, Safety and Environmental Protection...
IR35 Status:
Inside IR35

CV-Library Salisbury, UK Contractor
CL
Jun 14, 2026  
Software and Systems Test Coordination Engineer
Job Title: Software and Systems Test Coordination Engineer Location: Gaydon, Warwickshire Rate: £33.88ph via an Umbrella Company (Inside IR35) or £25.26ph on a PAYE basis Employment Type: Contract (Currently financed until March 2027) Hours: Standard 40 Hours Per Week Reference: J(phone number removed) Position Description: Duties: This role (Software and systems test coordination engineer) is responsible for overseeing the overall testing status of the EVA25 programs. While the role demands a high level of technical understanding, it is not hands-on testing role. The successful candidate will ensure consistent adherence to established processes, effective utilisation of issue management tools and clear and transparent reporting to senior stakeholders. Key aspects of this role involves the ability to drive and prioritise actions and process changes based on clear KPIs around testing management with stakeholders across the company. Strong skills in developing metrics,...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwickshire Contractor
CL
Jun 14, 2026  
Building & Construction Project Leader
Building & Construction Project Leader - Defence Sector £40.00 per hour INSIDE IR35 (Umbrella) 12‑month contract BPSS+ Clearance required (SC highly advantageous) UK Nationals only - Due to nature of work This role offers the opportunity to lead complex, high‑value construction and building services projects within a secure defence environment. The Building & Construction Project Leader will take ownership of CAPEX projects from initial feasibility through to design, delivery and final handover, driving outcomes that support critical national infrastructure. Role Overview The Project Leader will guide multi‑disciplinary teams, shape engineering solutions, and ensure projects are delivered safely, efficiently and to the highest technical standards. This position suits a confident, experienced Project Manager who thrives in environments where stakeholder engagement, technical insight and decisive leadership are essential. Key Responsibilities Establish and lead...
IR35 Status:
Inside IR35

CV-Library Newport PO30, UK Contractor
CL
Jun 13, 2026  
Junior Engineering Surveyor
Junior Engineering Surveyor Great Missenden 6-Month Contract Inside IR35 £130 – £175 per day PAYE (excluding holiday pay) We are currently supporting a major infrastructure contractor delivering one of the UK’s largest civil engineering projects and are looking to recruit a Junior Engineering Surveyor to join their established site engineering team. This is a fantastic opportunity for a motivated and ambitious surveying professional looking to further develop their experience within large-scale infrastructure, rail and civil engineering projects. The Role: The successful candidate will support the Engineering Surveying team in carrying out site surveys in line with project procedures, health & safety standards and engineering requirements. The role will involve assisting with setting out, control networks, laser scanning, survey data capture and reporting across a live construction environment. Key Responsibilities: • Assist with engineering surveying activities across the...
IR35 Status:
Inside IR35

CV-Library Great Missenden, Buckinghamshire Contractor
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