Senior engineer - Identity & Token Security

Added 27/07/2026

Senior Engineer - Identity & Token SecurityRate: £550 day Outside IR35Start Date: ASAPEnd Date: 18/12/2026Active SC ClearanceLocation: Remote/Hybrid (UK-based)ResponsibilitiesDesign and implement OAuth 2.0 Token Exchange (RFC 8693) capabilities.Develop secure identity delegation and propagation patterns across distributed services.Implement token down-scoping and audience restriction mechanisms aligned to least-privilege principles.Design secure service-to-service authentication frameworks within zero-trust environments.Build and maintain robust JWT validation and cryptographic trust chains.Integrate applications and services using OpenID Connect (OIDC) standardsEssential:OAuth 2.0 & Identity StandardsProven hands-on implementation experience with OAuth 2.0 Token Exchange (RFC 8693).Strong understanding of OpenID Connect (OIDC) core specifications.Expert-level understanding of JWT (RFC 7519).Experience signing, validating and...

Senior Systems Engineer

Added 24/07/2026

A highly successful boutique consultancy is looking to hire a Senior Systems Engineer to their Managed Services team. The consultancy specialises in providing modern Microsoft solutions to a range of clients within the mid-market sector and are always working with the latest and greatest tech. The position sits as one of the most senior technical members of the team and will primarily be focused on complex escalations.The successful candidate will ideally come from an MSP background and demonstrate a strong track record of Systems Engineering across on-premise, cloud & M365 environments. As the company continues to win business and expand,...

SRE Security Engineer

Added 23/07/2026

SRE Security Engineer (SC Cleared) Location: Remote Clearance: Active SC Required We're seeking an experienced SRE Security Engineer to support a major government programme, helping to improve the security, reliability, and resilience of critical platforms and services. Key Skills:SplunkSecurity EngineeringPlatform & Infrastructure SecurityVulnerability ManagementCloud & Enterprise EnvironmentsSecurity Architecture PrinciplesResponsibilities:Enhance the security posture of business-critical systems.Identify and remediate security risks and vulnerabilities.Support secure platform design and operational improvements.Collaborate with engineering teams to embed security best practices.Contribute to monitoring, detection, and continuous improvement initiatives.Ideal for candidates with a background in Security Engineering, DevSecOps, Platform Security, or SRE within secure or regulated environments.

Fabric Platform Engineer

Added 22/07/2026

Fabric Platform Engineer| Outside IR35 | £400 - £450 | HybridWe are seeking a Fabric Platform Engineer to join a growing data and analytics team. This role will play a key part in designing, building, and maintaining a modern data platform using Microsoft Fabric, enabling the business to make data-driven decisions at scale.Key ResponsibilitiesBuild, maintain, and optimise data solutions within Microsoft Fabric.Build and support data pipelines, integrations, and Lakehouse environments.Ensure platform performance, security, and reliability.Work with stakeholders to deliver data and analytics requirements.Troubleshoot issues and contribute to continuous platform improvement.Skills & ExperienceExperience with Microsoft Fabric and/or Azure data services.Strong SQL...

Support Engineer L3

Added 22/07/2026

We are hiring for a L3 Support Engineer role. Its a 12 Months of Contract to Hire roleLocation: Hybrid at Newcastle (3 days/week)OverviewWe are seeking an experienced L3 Live Support Engineer to provide advanced technical support and operational stability across critical production systems. The successful candidate will act as the highest level of technical escalation, owning and driving the investigation, diagnosis, and resolution of complex incidents while ensuring minimal business impact. This role requires strong analytical skills, excellent stakeholder management, and the ability to collaborate across multiple technology and business teams.Key ResponsibilitiesIncident Management & ResolutionOwn and manage the investigation and...

AI Engineer

Added 22/07/2026

AI Engineer | £80,000 - £110,000 | London/Hybrid | Python | LLM | GenAI | RAG | AI Agents | Looking to join one of the fastest growing AI companies in Europe?Want to have autonomy and own end-to-end solutions?I am currently supporting a brilliant AI company who are looking for an AI Engineer to join the team. This company are in serious growth mode and work with some world renowned organisations.They’re looking for ambitious Engineers to come on board to build AI native application with rapid response.  You will be involved in the end-to-end development of these applications from presales,...

Senior DevOps Engineer (AWS) | Tech-for-Good Scale-Up | Bristol (Hybrid) | £65k–£85k

Added 21/07/2026

Senior DevOps Engineer (AWS) | Tech-for-Good Scale-Up | AI‑Enabled Products | Bristol (Hybrid) | £65k–£85k   Want to work on technology that genuinely impacts people’s lives?   Interested in owning and evolving AWS platforms supporting AI‑driven, data‑heavy systems?   We're looking for DevOps Engineers to join a well‑established data-driven technology business operating at scale. Take technical ownership of AWS infrastructure, Terraform and Pulumi, containerisation tools, and more for AI‑enabled products, working closely with engineering and product teams in a company with a truly strong engineering culture.   Ideal for someone looking for senior‑level responsibility, technical influence, and long‑term impact rather than pure operational support.  ...

Back-end Engineer (contract)

Added 17/07/2026

Back-end Engineer (contract) Opus have partnered with an cutting-edge AI focused HealthTech start-up with a mission-driven culture and ethical AI approach. The successful candidate will be making a real impact to patient care outcomes.  Contract Specifics: Rate: £400 per day, Outside IR35 Duration: 3 months  Start date: ASAP, Immediate starter  Working Patterns: Full-time, 1 day p/w in London-offices. Essential: Confident working across data infrastructure, distributed systems, APIS and AI-services Proven experience in building/designing scalable backend servicesStrong experience building and maintaining APIs (REST, GraphQL and/or gRPC).Knowledge of Docker and AWS (ideally in a recent project)Essential - must have strong coding skills...

ML Engineer

Added 17/07/2026

ML Engineer (Early Career - Mid-level) New contract role | Immediate starter - Just in! Opus have partnered with an cutting-edge AI focused HealthTech start-up with a mission-driven culture and ethical AI approach. The successful candidate will be making a real impact to patient care outcomes.  Contract Specifics: Rate: £400 per day, Outside IR35 Duration: 3 months  Start date: ASAP, Immediate starter  Working Patterns: Full-time, 1 day p/w in London-offices. Person Specification:  - Solid skills in Python, SQL and AWS.  - Background in Software Engineering / Data Engineering | Previous back-end work is nice to have  - Experience working with...