Sentinel

About the Company

In a world obsessed with technology, we’re interested in the people who make it.

With curiosity for our customers’ ambitions and empathy for our clients’ challenges, we connect talented technology professionals with opportunities to make the greatest impact.

We take a ‘people-first’ approach to talent solutions, building lasting relationships with our customers to help them deliver on their vision for the future.

Sentinel was established 20 years ago and in that time technologies have evolved drastically. By staying true to our commitment to put people first, we have evolved alongside them.

With offices in London, Tunbridge Wells, Czech Republic and Switzerland we deliver permanent and contract recruitment, alongside Statement of Work and Consultancy Services to support clients in total workforce management. Working with technology companies, FinTech organisations, start-ups and major brands our customers are on the cutting edge of business technologies and we supply the in-demand talent driving innovation and shaping their businesses.

Recruiter Investing in Talent Awards 2018 Winner
Kelly OCG Supplier Awards 2015, 2016 & 2018 Winner.

We supply talent to all areas of IT technology and love challenges in Data, Digital, Development, DevOps, Infrastructure, Information Security and Project Management.

Listed Jobs

Company Name

Sentinel

Job Title

Java Developer

Job Description

**Job Title:** Java Developer **Role Summary:** Develop and maintain full-stack Java applications using frameworks and cloud technologies. **Expectations:** Initial 3-month contract with potential extensions. **Key Responsibilities:** Build and optimize Java-based solutions; design/develop scalable applications; configure CI/CD pipelines; integrate caching/Kafka systems; test application performance. **Required Skills:** Java, Spring, Hibernate; Linux, VMware, OpenShift, AWS; CI/CD (Jenkins, GitHub Actions, Chef, Ansible, Nexus); PostgreSQL; testing tools (JUnit, Cucumber, JMeter); caching technology, Kafka. **Required Education & Certifications:** Not specified.

London, United kingdom

On site

03-10-2025

Company Name

Sentinel

Job Title

Threat Hunter/Threat Detection/SOC Analyst/TTP/Threats/Monitoring/Detection/ZTNA

Job Description

Job Title: Threat Hunter/SOC Analyst Role Summary: Proactively identify and mitigate emerging threats through strategic threat hunting and detection. Focus on cloud environments (AWS, Azure, GCP) using SIEM tools (Azure Sentinel, Splunk) to analyze security data and optimize detection capabilities. Collaborate with SOC teams to strengthen organizational security posture. Expectations: Develop and execute advanced threat detection strategies; provide actionable insights to preempt threats; continuously refine detection methodologies and cloud security protocols. Key Responsibilities: - Conduct proactive threat hunting campaigns in cloud infrastructure. - Monitor, analyze, and prioritize security alerts using Sentinel/Splunk. - Design and optimize detection rules based on threat intelligence and TTPs (Tactics, Techniques, Procedures). - Investigate suspicious activity and coordinate response actions with SOC teams. - Recommend improvements to threat detection frameworks and ZTNA (Zero Trust Network Access) architectures. Required Skills: - Expertise in cloud security (AWS, Azure, GCP). - Proficient in SIEM tools (Azure Sentinel, Splunk). - Strong understanding of TTPs and threat modeling. - Experience with Zero Trust principles. - Advanced analytical and problem-solving abilities. Required Education & Certifications: - Bachelor’s degree in Cybersecurity, Computer Science, or related field. - Preferred certifications: CISSP, CEH, or GIAC PCEP (Certified Cyber Threat Defender).

London, United kingdom

On site

08-10-2025

Company Name

Sentinel

Job Title

SAP PM Architect

Job Description

**Job Title** SAP PM Architect **Role Summary** Lead the end‑to‑end design, implementation, and integration of SAP Plant Maintenance (PM) within a large‑scale digital transformation program for an SAP ECC customer. Deliver end‑to‑end solutions, align maintenance processes with manufacturing and asset management requirements, and ensure seamless integration with MM, PP, QM, and FI/CO modules. **Expectations** - Design and deliver SAP PM solutions on a contract basis (8 months, with potential extensions). - Own full‑cycle implementations: blueprinting, design, configuration, testing, deployment, UAT, and defect resolution. - Analyze existing ECC maintenance processes, define a target operating model, and translate business requirements into functional specifications. - Collaborate closely with business, functional, and technical teams to ensure alignment and quality. **Key Responsibilities** - Conduct requirements workshops and capture functional needs for SAP PM. - Create detailed design documents, process flows, and configuration plans. - Lead configuration activities across PM, MM, PP, QM, and FI/CO modules. - Develop and execute test scripts; support UAT and defect remediation. - Coordinate with integration teams to ensure end‑to‑end data flow and system interoperability. - Act as the primary technical liaison between business users and development teams. - Provide post‑go‑live support and knowledge transfer. **Required Skills** - 12+ years of SAP PM experience, including at least 2 full‑cycle implementations. - In‑depth knowledge of SAP ECC, PM, MM, PP, QM, and FI/CO integration. - Strong configuration, blueprinting, and design abilities. - Proven testing and UAT facilitation experience. - Excellent analytical, communication, and stakeholder management skills. - Ability to work autonomously in a contract environment. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Information Systems, Engineering, or related field. - SAP PM certification (or equivalent). - SAP ECC certification highly desirable.

London, United kingdom

On site

Senior

09-10-2025

Company Name

Sentinel

Job Title

Senior Java Software Engineer

Job Description

**Job Title:** Senior Java Software Engineer **Role Summary:** Senior Java Software Engineer required for a 3‑month contract with potential extension. Deliver end‑to‑end development, deployment, and support of Java microservices using Spring, Kafka, Kubernetes, and relational/noSQL databases. Operate across the full software lifecycle with strong troubleshooting and performance optimization responsibilities. **Expactations:** - Contribute immediately on a hybrid schedule; adhere to IR35 compliance. - Produce high‑quality, maintainable code under tight deadlines. - Solve complex production issues, including Kafka lag and Spring bean configuration problems. - Collaborate with DevOps and QA teams to ensure smooth CI/CD pipelines and reliable deployments. - Communicate progress, risks, and solutions clearly to stakeholders. **Key Responsibilities:** - Design, implement, and test Spring‑based services and APIs. - Integrate, configure, and tune Kafka streams, topics, and consumer groups. - Deploy and manage applications on Kubernetes clusters (Helm, operators). - Write efficient SQL/NoSQL queries and manage database schema changes. - Monitor application performance, diagnose bottlenecks, and apply optimizations. - Participate in code reviews, unit and integration testing, and automated pipeline setup. - Troubleshoot and resolve incidents in production, providing root‑cause analysis. - Document design decisions, API contracts, and operational procedures. **Required Skills:** - Java 8/11/17+ with deep knowledge of Spring (DI, scopes, transactions). - Kafka ecosystem: producers, consumers, partitions, scaling, and monitoring. - Kubernetes fundamentals: pods, services, deployments, Helm charts. - Relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB, Cassandra). - SQL, data modeling, and query optimization. - Docker, CI/CD tools (Jenkins, GitLab CI, ArgoCD), and Git workflow. - RESTful API design and microservices architecture. - Multithreading, concurrency, and performance tuning. - Strong debugging, log analysis, and root‑cause identification. - Excellent written and verbal communication. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Software Engineering, or equivalent professional experience. - Optional certifications: Spring Professional Certification, Confluent Kafka Certified Developer, Certified Kubernetes Application Developer (CKAD).

Farnborough, United kingdom

Hybrid

Senior

04-11-2025