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Looking for the best JWT jobs? Explore top IT careers specializing in JSON Web Token (JWT) technology on Haystack. Find the latest developer, engineer, and security roles that focus on JWT for secure authentication and data exchange. Start your next JWT job opportunity today!
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Cyber Security Engineer
Leidos
Huntingdon
Hybrid
Mid - Senior
£47,600 - £61,000
RECENTLY POSTED
terraform
github
git
ansible
kubernetes
python
+7
DescriptionCyber Security EngineerSecurity Clearance Required - DV (‘Developed Vetting’)Location: Huntingdon, UK (On-site 4/5 days a week)UNLEASH YOUR POTENTIALAt Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.Are your ready for your next challenge?We are in search for multiple Cyber Security Engineers with varying technical backgrounds - Required to work at our customer site in Huntingdon, Cambridgeshire with occasional travel to other UK sites.  In this role, you will working within a team of engineers to ensure that the customer sites maintain a strong cyber security posture.Cyber Security Engineers are responsible for providing cybersecurity engineering services for classified and unclassified networks of computer systems.  The Cyber Security Engineers will provide operational and engineering support.This position perform the following tasks:
Develop creative solutions to complex technical issues and problems
Work with the engineering teams to ensure systems remain at the required security posture against baseline requirements
Work with the Security Monitoring engineering team to ensure logs are forward to the SIEM capability
Work with the customer and appropriate agencies to develop new policies, design processes, and procedures, and develop technical designs
Assess system vulnerabilities, implement risk mitigation strategies, validate secure systems, and test security products and systems to detect security weakness
Maintain and support security enforcing functions
Core Skills
Experience working in MOD or Home Office project environments
Strong knowledge of network and system security, including firewalls, IDS/IPS, micro-segmentation, and host security.
Hands on experience with the following security products Trellix, Ivanti, ClearSwift, Yubikey
Understanding of secure coding practices and common vulnerabilities (OWASP Top 10, SANS Top 25).
Expertise in identity and access management (IAM), including RBAC, ABAC, JWT and Cookie based authentication.
Incident detection and response in MOD environments.
Security compliance and regulatory frameworks (e.g., NIST, CIS Benchmarks).
Experience working with Kubernetes at an administrative level
Soft Skills
Strong leadership and mentoring abilities.
Effective communication with development, operations, and security teams.
Ability to advocate for security best practices in a DevOps culture.
Desirable SkillsContainerisation Security
Expertise in Kubernetes security (e.g., RBAC, network policies, pod security standards, secrets management).
Knowledge of container runtime security (e.g., container escapes, rootless containers, sandboxing).
Image security best practices, including scanning, signing, and provenance verification.
Secure deployment patterns using Tanzu & Kubernetes.
Runtime security monitoring.
DevSecOps & CI/CD Security
Secure CI/CD pipeline design with security testing using like Git and SonarQube.
Implementation of Infrastructure as Code (IaC) security (e.g., Terraform, Ansible).
Secrets management in CI/CD pipelines using Vault or Kubernetes Secrets.
Security automation and policy enforcement using tools like GitHub Actions, GitLab CI and Jenkins.
Cloud & Infrastructure Security
Strong knowledge of cloud security principles in a containerised environment.
Kubernetes security posture management (KSPM) using tools like Trivy.
Secure ingress/egress controls, service mesh security (e.g., Istio).
Encryption strategies for data at rest, in transit, and in use.
Network security best practices for Tanzu container networking (e.g., NSX, Rancher)
Compliance monitoring and security auditing for cloud-native environments.
Automation & Scripting
Scripting skills in Python, PowerShell for security automation.
API security knowledge (e.g., OAuth, JWT, API gateways, rate limiting).
Experience with Security as Code for automated policy enforcement.
Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your CV with us today!Everything we do is built on our commitment to do the right thing for our customers, our employees, and our communities. Learn more about the values and culture that are the foundations of our business. Our work in the United Kingdom includes addressing some of the most complex problems in national security, defence, government, logistics and operations, transportation, and energy.What we do for you: At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:•    Contributory Pension Scheme •    Private Medical Insurance •    33 days Annual Leave (including public and privilege holidays) •    Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme) •    Access to Flexi-time benefitsCommitment to Diversity:We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture.  We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone.  If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.Who We Are:Leidos UK & EUROPE – we work to make the world safer, healthier, and more efficient through technology, engineering and science.Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.What Makes Us Different: Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world.  You can inspire change.Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team.  We have been empowering our people to work flexibly for years.  Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.Come break things (in a good way). Then build them smarter.We’re the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”Original Posting:For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.Pay Range:£47,600.00-£61,000.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.About LeidosLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.Pay and BenefitsPay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Securing Your DataBeware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
IT Security Engineer
Leidos
Huntingdon
In office
Mid - Senior
£60,100 - £77,000
RECENTLY POSTED
terraform
github
git
ansible
kubernetes
python
+7
DescriptionCyber Security Engineer (DevSecOps)Location: Huntingdon, Cambridgeshire UKSecurity Clearance Level: High - (DV ‘Developed Vetting’)At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.Are your ready for your next challenge?We are in search for multiple Cyber Security Engineers with varying technical backgrounds - Required to work at our customer site in Huntingdon, Cambridgeshire with occasional travel to other UK sites.  In this role, you will working within a team of engineers to ensure that the customer sites maintain a strong cyber security posture.Cyber Security Engineers are responsible for providing cybersecurity engineering services for classified and unclassified networks of computer systems.  The Cyber Security Engineers will provide operational and engineering support.This position perform the following tasks:
Develop creative solutions to complex technical issues and problems
Work with the engineering teams to ensure systems remain at the required security posture against baseline requirements
Work with the Security Monitoring engineering team to ensure logs are forward to the SIEM capability
Work with the customer and appropriate agencies to develop new policies, design processes, and procedures, and develop technical designs
Assess system vulnerabilities, implement risk mitigation strategies, validate secure systems, and test security products and systems to detect security weakness
Maintain and support security enforcing functions
Core Skills
Experience working in MOD or Home Office project environments
Strong knowledge of network and system security, including firewalls, IDS/IPS, micro-segmentation, and host security.
Hands on experience with the following security products Trellix, Ivanti, ClearSwift, Yubikey
Understanding of secure coding practices and common vulnerabilities (OWASP Top 10, SANS Top 25).
Expertise in identity and access management (IAM), including RBAC, ABAC, JWT and Cookie based authentication.
Incident detection and response in MOD environments.
Security compliance and regulatory frameworks (e.g., NIST, CIS Benchmarks).
Experience working with Kubernetes at an administrative level
Soft Skills
Strong leadership and mentoring abilities.
Effective communication with development, operations, and security teams.
Ability to advocate for security best practices in a DevOps culture.
Desirable SkillsContainerisation Security
Expertise in Kubernetes security (e.g., RBAC, network policies, pod security standards, secrets management).
Knowledge of container runtime security (e.g., container escapes, rootless containers, sandboxing).
Image security best practices, including scanning, signing, and provenance verification.
Secure deployment patterns using Tanzu & Kubernetes.
Runtime security monitoring.
DevSecOps & CI/CD Security
Secure CI/CD pipeline design with security testing using like Git and SonarQube.
Implementation of Infrastructure as Code (IaC) security (e.g., Terraform, Ansible).
Secrets management in CI/CD pipelines using Vault or Kubernetes Secrets.
Security automation and policy enforcement using tools like GitHub Actions, GitLab CI and Jenkins.
Cloud & Infrastructure Security
Strong knowledge of cloud security principles in a containerised environment.
Kubernetes security posture management (KSPM) using tools like Trivy.
Secure ingress/egress controls, service mesh security (e.g., Istio).
Encryption strategies for data at rest, in transit, and in use.
Network security best practices for Tanzu container networking (e.g., NSX, Rancher)
Compliance monitoring and security auditing for cloud-native environments.
Automation & Scripting
Scripting skills in Python, PowerShell for security automation.
API security knowledge (e.g., OAuth, JWT, API gateways, rate limiting).
Experience with Security as Code for automated policy enforcement.
Candidate EssentialsBritish - non-dual national – many of our projects have nationality restrictionsDV cleared or willing to go through DV Clearance. Experience in delivering accredited security solutions in sensitive government scenariosAre you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your CV with us today!Everything we do is built on our commitment to do the right thing for our customers, our employees, and our communities. Learn more about the values and culture that are the foundations of our business. Our work in the United Kingdom includes addressing some of the most complex problems in national security, defence, government, logistics and operations, transportation, and energy.What we do for you: At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:•    Contributory Pension Scheme •    Private Medical Insurance •    33 days Annual Leave (including public and privilege holidays) •    Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme) •    Access to Flexi-time benefitsCommitment to Diversity:We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture.  We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone.  If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.Who We Are:Leidos UK & EUROPE – we work to make the world safer, healthier, and more efficient through technology, engineering and science.Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.What Makes Us Different: Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world.  You can inspire change.Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team.  We have been empowering our people to work flexibly for years.  Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.At Leidos, we don’t want someone who “fits the mold”—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.Original Posting:For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.Pay Range:£60,100.00-£77,000.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.About LeidosLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.Pay and BenefitsPay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Securing Your DataBeware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
AI Automation Engineer
McCabe & Barton
London
Hybrid
Mid - Senior
Private salary
RECENTLY POSTED
processing-js
tensorflow
django
kubernetes
restful
python
+6
AI Automation Engineer | Hybrid 3 days a week in office | London | PermanentA leading financial services client in London is seeking a talented AI Automation Engineer to join their team. Please see below for key details.Role Overview: Analyse and optimise business processes for automation whilst designing, building, and deploying intelligent automation solutions using BPA platforms (Appian), Machine Learning, and Generative AI to drive operational efficiency and innovation.Key Characteristics:
Process Analysis & Optimisation - Expert in analysing existing business processes through stakeholder interviews, process mapping, and workflow documentation to identify automation opportunities. Skilled in creating process flow diagrams, conducting time-motion studies, identifying bottlenecks and inefficiencies, and redesigning processes to be machine-readable and automation-ready using methodologies.
Python Development - Strong proficiency in Python programming including object-oriented design, asynchronous programming, error handling, and writing clean, maintainable code. Experience with key libraries including Pandas, NumPy for data manipulation, requests and APIs for integrations, asyncio for concurrent processing, and building robust automation scripts with proper logging, testing (pytest), and documentation.
AI & Machine Learning Frameworks - Deep expertise in AI/ML frameworks including TensorFlow, PyTorch, Scikit-learn, and Hugging Face Transformers. Experience building, training, and deploying machine learning models for classification, regression, clustering, and NLP tasks. Understanding of model evaluation metrics, hyperparameter tuning, feature engineering, and MLOps practices for production deployment.
Generative AI & LLM Integration - Proficient in working with Large Language Models including OpenAI GPT models, Anthropic Claude, Azure OpenAI, and open-source alternatives (Llama, Mistral). Experience with prompt engineering, fine-tuning, RAG (Retrieval Augmented Generation) architectures, vector databases (Pinecone, ChromaDB, FAISS), embeddings, and building AI-powered automation solutions that leverage natural language understanding.
Appian BPA Platform - Strong experience with Appian low-code platform including process modelling, interface design, expression rules, integration objects, and data modelling. Skilled in building end-to-end business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with external systems via REST APIs, web services, and connected systems.
API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework for exposing AI models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger/OpenAPI), webhooks, and integrating disparate systems to create seamless automated workflows.
Document Processing & OCR - Experience implementing intelligent document processing solutions using OCR technologies (Tesseract, Azure AI Document Intelligence, natural language processing for information extraction, document classification, and building end-to-end pipelines for automated document ingestion, processing, and data extraction with validation rules.
Robotic Process Automation (RPA) - Knowledge of RPA concepts and tools (UiPath, Automation Anywhere, Power Automate) for automating repetitive tasks, screen scraping, and Legacy system integration. Ability to assess when RPA vs. API integration vs. AI solutions are most appropriate, and experience building hybrid automation solutions combining multiple technologies.
Data Engineering & Pipeline Development - Strong skills in building data pipelines for AI/automation solutions including data extraction, transformation, and loading (ETL). Experience with SQL databases (SQL Server), data validation, cleansing workflows, scheduling tools (Azure Data Factory), and ensuring data quality for machine learning applications.
Machine Learning Operations (MLOps) - Experience deploying ML models to production environments using containerisation (Docker), orchestration (Kubernetes), model versioning (MLflow, DVC), monitoring model performance and drift, A/B testing frameworks, and implementing CI/CD pipelines for automated model training and deployment. Understanding of model governance, explainability, and compliance requirements.
Solution Architecture & Technical Design - Ability to design end-to-end automation architectures that combine multiple technologies (BPA, ML, GenAI, APIs) into cohesive solutions. Experience creating technical design documents, system architecture diagrams, assessing build vs. buy decisions, estimating effort and complexity, and presenting technical recommendations to both technical and non-technical stakeholders.
Stakeholder Collaboration & Change Management - Excellent communication skills for gathering requirements from business users, translating business needs into technical specifications, and demonstrating proof-of-concepts. Experience managing stakeholder expectations, conducting user acceptance testing, providing training on automated solutions, measuring automation ROI through KPIs (time saved, error reduction, cost savings), and driving adoption of intelligent automation across the organisation.
If you align to the key requirements then please apply with an updated CV.
Developer
InfinityQuest Ltd,
Sheffield
Remote or hybrid
Mid - Senior
Private salary
RECENTLY POSTED
processing-js
terraform
kubernetes
java
vault
jwt
We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures. This role focuses on building secure, scalable identity and access workflows across Google Cloud Platform, integrating identity services with custom APIs, Pub/Sub pipelines, and cloud-native applications.You will collaborate closely with tech leads, Cloud Security, DevOps, and Application Engineering teams to design and implement robust IAM automation, identity lifecycle workflows, and secure service integrations that support enterprise-level cloud and Identity operations.Key Responsibilities
Identity Orchestration
Design and implement identity flows for provisioning, de-provisioning and orchestration of identity lifecycle events.
Integrate with Cloud Identity Services, ServiceNow, and internal services to streamline / orchestrate identity provisioning and identity lifecycle management.
Build policy-based orchestration workflows for adaptive authentication and context-aware access using industry standards (like OPA).
API Development
Design, build, and secure RESTful APIs and backend services supporting identity, provisioning, and governance workflows.
Integrate APIs with our new authentication service for token validation, user sessions, and application-level authorization.
Build and document internal SDKs, middleware, and shared libraries for consistent IAM logic across services.
Ensure API security, performance, reliability, resilience, and observability.
API-to-Pub/Sub Event Processing
Develop pipelines where API events publish to Pub/Sub for asynchronous workflows such as:
automated identity lifecycle tasks
access review event triggers
logging and audit forwarding
security anomaly detection
Build Cloud Functions, Cloud Run microservices, or containerized services to process Pub/Sub messages.Implement robust event-processing patterns including retries, idempotency, DLQs, and structured logging.
Automation & Infrastructure as Code
Build and maintain Terraform modules for IAM, API services, Pub/Subtopics, workloads, and permissions.
Automate deployment and validation of identity and access configurations via CI/CD pipelines.
Implement automated testing for IAM policies and API behaviour.
Support, Troubleshooting & Collaboration
Troubleshoot identity, access, and API workflow issues across distributed systems.
Provide technical guidance to engineering teams on secure API design, IAM best practices, and identity workflows.
Work with security teams during audits, compliance checks, and incident investigations.
Required Skills & ExperienceTechnical Expertise
Proven experience with modern identity orchestration platforms (Auth0 Actions, Okta Workflows, WorkOS, or SlashID)
Strong programming skills in Python, Go, Java, or Node.js for API and microservice development.
Experience designing and deploying cloud-native APIs (Cloud Run, Cloud Functions, GKE).
Deep understanding of event-driven architectures, Pub/Sub, message processing, and workflow automation.
Strong knowledge of OAuth2, OIDC, JWT, SAML, and identity federation patterns.
Proficiency in Terraform or equivalent IaC tools.
Experience using API gateways, reverse proxies, or service mesh technologies.
Soft Skills
Analytical thinker with strong debugging and root-cause analysis abilities.
Clear communication skills with the ability to collaborate across engineering, security, and operations teams.
Ownership mindset, with a security-first mentality and attention to detail.
Ability to work in an agile, fast-paced environment.
Nice-to-Have
Google Professional Cloud Security Engineer or Cloud Architect certification.
Experience with additional identity providers (Okta, Azure AD, Ping Identity).
Familiarity with Kubernetes (GKE RBAC + workload identity).
Experience using Secret Manager, Vault, or other secrets management tools.
Knowledge of compliance frameworks (SOC2, ISO 27001, PCI, HIPAA).
Education
Bachelors degree in computer science, Engineering, Information Security, or equivalent hands-on experience.
Oracle Developer
InvitISE Ltd
London
Hybrid
Mid - Senior
£650/day
RECENTLY POSTED
git
postman
curl
jwt
xslt
xml
Were looking for an Oracle Developer for our public sector client on an initial 6 month contract paying up to £650 per day inside IR35.This role is remote, with an expectation to attend the London site 1 day per month at a maximum.You need to hold or be able to pass Security Clearance (SC) and sole UK status to be considered.Workload is increasing, and the team needs support across several integrations and custom elements already in development. Youll pick up defined deliverables, work through the full development lifecycle, and help integrate existing systems with new functionality. Expect a mix of new builds and enhancements to current workstreams.Essential experience:Strong development backgroundOracle Integration CloudOracle Fusion CloudIntegration work with SOAP, REST, JSONOIC, Postman, CurlOracle VBCSERP and HCM integrations via OICOAUTH, IAM, JWTGIT, XML, JSON, XSLTDesirable:Public cloud and security knowledgeDevOps backgroundExperience with change and release processesUnderstanding of secure development practicesInterested?Please apply below.Oracle Integration Cloud, OIC, Oracle Fusion, Oracle ERP, HCM, VBCS, OCI, Integrations, REST, SOAP, JSON, SC Cleared, Inside IR35.
Infrastructure Design Engineer
Indotronix Avani UK Ltd
London
Hybrid
Mid - Senior
£600/day
git
postman
curl
jwt
xslt
xml
Role:Infrastructure DesignerLocation:Remote - travel to office locations as & when needed. Once a month to London (King Charles Street)RoleType:6monthsSalary:Depends on experienceRole Summary:The Role requires in-depth Knowledge OCI (Oracle Cloud Infrastructure) and particular experience of Oracle Integration Cloud (OIC) with ideally developed custom applications using Oracle VBCS using a SECDEVOPS process to deploy to dev and test environments.You will be expected to work to specify technical requirements for the existing and new integrations required for the service, this involves developing, validating and reviewing physical integration designs and producing Release Notes.Key Responsibilities:Mandatory Skills:
3+ years of Development Experience
2+ years of Oracle Integration Cloud (OIC)
2 years Oracle Fusion Cloud ExperienceHands-on with development & unit testing of integration components & web services
(SOAP/REST/JSON Payload) using OIC, Postman, Curl
Oracle VBCS to develop custom elements of the service
3+ years experience of system interfaces (predominantly on a PaaS Cloud)
Teamwork and Collaboration Skills
Oracle ERP, HCM connectivity using Oracle Integration CloudOAUTH, IAM, JWT Technologies
GIT, XML, JSON, XSLT, SOAPUI, Postman, Curl
In depth knowledge of systems integration best practices and common architectural patterns.
Essential Skills & Experience:Desirable
Knowledge of public cloud (IaaS) technologies including relevant security and IAM controls
Security administration and auditing of privileged systems access.
Provide technical delivery progress, resolving issues and initiating appropriate corrective action
Ensuring the delivery of new products or services from the technical workstream is to the appropriate level of quality in accordance with the workstream plan
Knowledge of Change/Release Processes
DevOps experience
Deep understanding of Technologies, platforms
Development and Maintenance of Key Designs
Understanding of security best practice with regards to development of new services
Application Developer
VANLOQ LIMITED
Sheffield
Hybrid
Mid - Senior
Private salary
processing-js
terraform
kubernetes
java
oauth2
vault
+1
Application Developer Identity & API Engineering (Contract) Location: Hybrid Sheffield Contract: Until end of year (Inside IR35) Sector: Financial ServicesWe are working with a leading financial services organisation who are looking to engage a highly skilled Application Developer to support the build-out of modern, cloud-native identity and access management (IAM) capabilities.This contract role is focused on developing secure identity APIs, event-driven workflows, and automation across Google Cloud Platform, supporting enterprise-scale identity lifecycle management and access orchestration.You will work closely with cloud security, DevOps, platform, and application engineering teams to deliver scalable, secure identity services in a fast-paced, regulated environment.Key Responsibilities
Design and implement identity lifecycle workflows covering provisioning, de-provisioning, and orchestration
Build secure, scalable RESTful APIs supporting identity, access, and governance use cases
Integrate APIs with authentication and token services using OAuth2, OIDC, JWT, and federation standards
Develop event-driven architectures using Pub/Sub to support asynchronous identity and access workflows
Build cloud-native services using Cloud Run, Cloud Functions, GKE, or containerised workloads
Implement Infrastructure as Code using Terraform for IAM, APIs, Pub/Sub topics, and permissions
Support CI/CD pipelines, automated testing, and validation of IAM policies and API behaviour
Troubleshoot identity, access, and API issues across distributed systems
Collaborate with security teams on audits, compliance, and incident investigations
Produce clear technical documentation and reusable components
Required Experience
Strong experience building identity-focused APIs and workflows
Hands-on experience with identity orchestration platforms (e.g. Auth0 Actions, Okta Workflows, WorkOS, SlashID)
Strong programming skills in Python, Go, Java, or Node.js
Solid understanding of event-driven architectures, Pub/Sub, and message processing patterns
Proven experience with cloud-native development on GCP
Good knowledge of Terraform or equivalent IaC tooling
Experience with API gateways, service mesh, or reverse proxies
Strong understanding of security-first design principles in enterprise environments
Nice to Have
Experience with additional identity providers (Okta, Azure AD, Ping Identity)
Exposure to Kubernetes (GKE, workload identity, RBAC)
Experience with secrets management tools (Vault, Secret Manager)
Familiarity with compliance frameworks such as SOC2, ISO 27001, or PCI
Why Apply?
Contract through to year-end with extension potential
Hybrid working from Sheffield
Inside IR35 engagement
Opportunity to work on large-scale identity and access platforms
High-impact role within a major financial services transformation programme
If you are an Application Developer with strong identity, API, and cloud experience looking for your next contract role, please apply or get in touch for more details.
Technical Lead - Head of Engineering - 2 Days Peterborough or London
ZENZO DIGITAL LTD
City of London
Hybrid
Leader
£90,000
react
javascript
dot-net
asp-net
redis
terraform
+21
Our client is undertaking a bold technology transformation, modernising the systems that power one of the UKs leading media groups.Were looking for a hands-on Tech Lead moving into a Head of Engineering role or current Head of Engineering to lead this change from the front, a full-stack technologist who codes with confidence, architects with foresight, and inspires teams to deliver with purpose.Youll own the engineering direction across multiple domains; designing scalable cloud-native platforms, embedding DevSecOps excellence, and ensuring our technology foundation accelerates the business. DevSecOps would be desirable to have but so long as you have DevOps that is fine.This is a role for a technical leader who still builds, who thrives on solving complex problems, automating intelligently, and mentoring the next generation of engineers.Technology doesnt sit on the sidelines here, it drives their growth, their data, and their customer experience.Your Impact Define and execute the engineering strategy across Azure cloud, integration, and legacy modernisation, aligned to the clients long-term digital roadmap. Design and deliver cloud-native solutions that scale efficiently, perform reliably, and integrate seamlessly across business functions. Lead by example in Azure DevSecOps: create and manage pipelines (YAML), infrastructure-as-code (Bicep, Terraform), and container orchestration (AKS, Docker). Embed engineering best practice: implement CI/CD, code quality gates, automated testing, and observability from build to production. Guide platform evolution: re-engineer legacy .NET and SQL systems into modular, API-driven architectures. Build and empower teams: mentor full-stack, DevOps, and Automation Test engineers fostering autonomy, innovation, and accountability. Champion security and reliability by design: integrate compliance, performance, and monitoring into every stage of delivery. Collaborate widely: partner with Product, Data, and Infrastructure teams to ensure alignment between technology capability and commercial goals. Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight.Your Technical ToolkitFrontend HTML5, CSS3, JavaScript (ES6+), TypeScript React.js (preferred), Angular, or Vue.js Responsive design (Bootstrap, Tailwind), state management (Redux, Context API) Front-end testing (Jest, React Testing Library, Cypress)Backend C#, ASP.NET Core / .NET 6+ RESTful and GraphQL APIs Entity Framework Core, LINQ Authentication & authorisation (OAuth2, JWT, Azure AD) Secure coding and API versioningData & Integration SQL Server, Azure SQL, Cosmos DB ORM optimisation, caching (Redis, Azure Cache for Redis) Data migration and ETL integration (APIs, pipelines)Cloud & DevSecOps Azure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans) CI/CD automation, gated releases, and environment governance Infrastructure-as-Code (Bicep, ARM, Terraform) Containerisation (Docker, AKS) and serverless (Azure Functions) Monitoring and observability (Application Insights, Log Analytics) Secrets management and vulnerability scanning (Key Vault, SonarQube, OWASP)Architecture & Design Microservices and event-driven design (Service Bus, Event Grid, Kafka) Domain-Driven Design (DDD) principles Resilient and scalable system patterns (circuit breakers, retries) Integration of legacy and modern platforms within hybrid environmentsWhat Success Looks Like 8+ years in software engineering, with deep full-stack and cloud experience. Proven record of leading engineering teams through modernisation or platform rebuilds. Hands-on mastery of Azure DevOps and enterprise-scale CI/CD, DevSecOps highly desirable Excellent architectural judgement balancing delivery speed, stability, and cost efficiency. Track record of developing high-performing, collaborative technical teams. Strong communication and leadership presence able to influence peers and executives alike. A continuous learner, passionate about automation, clean code, and scalable design.Your Journey with the company: We believe great leaders inspire by doing. From your first week, youll work alongside engineers, architects, and data specialists shaping not just what we build, but how we build it. Youll have open access to the leadership team, visibility into our transformation roadmap, and the chance to leave a lasting mark on how technology powers the business.The role can be based 2 days a week out of London (City Area) or Peterborough and the rest remote. If London then occasional trips to PeterboroughTPBN1_UKTJ
Senior Test Automation Engineer (Python, API, Linux - Billing / Rating
Hudson Shribman
Cambridge
Hybrid
Senior
£45,000 - £53,000
linux
python
processing-js
kubernetes
docker
oauth2
+1
Senior Test Automation Engineer (Python, API, Linux – Billing / Rating Systems) UK – Remote / Hybrid | Permanent We are recruiting a Senior Test Automation Engineer to join an engineering team building large-scale backend platforms used for billing, rating, and high-volume transaction processing across telecoms and financial-grade systems. This is a backend-focused automation role centred on Python, APIs, and Linux environments. It is not a UI automation role and not a manual QA position. Responsibilities Design, build, and maintain Python-based automation frameworks for backend services Develop and execute automated tests for APIs and service integrations Create coverage for regression, negative, and backward-compatibility scenarios Analyse requirements and define test strategies and test plans for complex backend systems Investigate failures using logs, metrics, and debugging tools in Linux environments Work closely with engineers to identify root causes and improve testability and reliability Support testing of systems deployed in cloud and distributed environments Essential Experience Strong, hands-on experience in Python test automation Proven background testing backend services and APIs Confident working in Linux environments (CLI, logs, troubleshooting) Experience testing billing, rating, charging, payments, or financial transaction systems Solid understanding of authentication and authorisation (OAuth2, JWT, API keys, etc.) Experience with CI/CD pipelines, version control, and defect tracking tools Desirable Experience Telecoms platforms (charging, mediation, invoicing) SDK testing and contract testing Performance or load testing exposure Containers and cloud platforms (Docker, Kubernetes, AWS/Azure/GCP) This role is not suitable for: UI automation–focused profiles (e.g. Selenium/Cypress-first) Manual-only QA roles SCADA, hardware, or control-systems testing backgrounds Right to Work Applicants must have the legal right to work in the United Kingdom without visa sponsorship now or in the future. Unfortunately, sponsorship is not available for this role Apply to (url removed)
Senior Test Automation Engineer (Python, API, Linux - Billing / Rating
Hudson Shribman
Cambridge
Remote or hybrid
Senior
£45,000 - £53,000
linux
python
kubernetes
docker
oauth2
jwt
Senior Test Automation Engineer (Python, API, Linux Billing / Rating Systems) UK Remote / Hybrid PermanentWe are recruiting a Senior Test Automation Engineer to join an engineering team building large-scale backend platforms used for billing, rating, and high-volume transaction processing across telecoms and financial-grade systems.This is a backend-focused automation role centred on Python, APIs, and Linux environments. It is not a UI automation role and not a manual QA position.Responsibilities
Design, build, and maintain Python-based automation frameworks for backend services
Develop and execute automated tests for APIs and service integrations
Create coverage for regression, negative, and backward-compatibility scenarios
Analyse requirements and define test strategies and test plans for complex backend systems
Investigate failures using logs, metrics, and debugging tools in Linux environments
Work closely with engineers to identify root causes and improve testability and reliability
Support testing of systems deployed in cloud and distributed environments
Essential Experience
Strong, hands-on experience in Python test automation
Proven background testing backend services and APIs
Confident working in Linux environments (CLI, logs, troubleshooting)
Experience testing billing, rating, charging, payments, or financial transaction systems
Solid understanding of authentication and authorisation (OAuth2, JWT, API keys, etc.)
Experience with CI/CD pipelines, version control, and defect tracking tools
Desirable Experience
Telecoms platforms (charging, mediation, invoicing)
SDK testing and contract testing
Performance or load testing exposure
Containers and cloud platforms (Docker, Kubernetes, AWS/Azure/GCP)
This role is not suitable for:
UI automation focused profiles (e.g. Selenium/Cypress-first)
Manual-only QA roles
SCADA, hardware, or control-systems testing backgrounds
Right to WorkApplicants must have the legal right to work in the United Kingdom without visa sponsorship now or in the future. Unfortunately, sponsorship is not available for this roleApply to (url removed)
Technical Lead - Head of Engineering - 2 Days Peterborough or London
ZENZO DIGITAL LTD
London
Hybrid
Leader
£90,000
react
javascript
dot-net
asp-net
redis
terraform
+15
Our client is undertaking a bold technology transformation, modernising the systems that power one of the UKs leading media groups. Were looking for a hands-on Tech Lead moving into a Head of Engineering role or current Head of Engineering to lead this change from the front, a full-stack technologist who codes with confidence, architects with foresight, and inspires teams to deliver with purpose. Youll own the engineering direction across multiple domains; designing scalable cloud-native platforms, embedding DevSecOps excellence, and ensuring our technology foundation accelerates the business. DevSecOps would be desirable to have but so long as you have DevOps that is fine. This is a role for a technical leader who still builds, who thrives on solving complex problems, automating intelligently, and mentoring the next generation of engineers. Technology doesnt sit on the sidelines here, it drives their growth, their data, and their customer experience. Your ImpactDefine and execute the engineering strategy across Azure cloud, integration, and legacy modernisation, aligned to the clients long-term digital roadmap.Design and deliver cloud-native solutions that scale efficiently, perform reliably, and integrate seamlessly across business functions.Lead by example in Azure DevSecOps: create and manage pipelines (YAML), infrastructure-as-code (Bicep, Terraform), and container orchestration (AKS, Docker).Embed engineering best practice: implement CI/CD, code quality gates, automated testing, and observability from build to production.Guide platform evolution: re-engineer legacy .NET and SQL systems into modular, API-driven architectures.Build and empower teams: mentor full-stack, DevOps, and Automation Test engineers fostering autonomy, innovation, and accountability.Champion security and reliability by design: integrate compliance, performance, and monitoring into every stage of delivery.Collaborate widely: partner with Product, Data, and Infrastructure teams to ensure alignment between technology capability and commercial goals.Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight. Your Technical Toolkit FrontendHTML5, CSS3, JavaScript (ES6+), TypeScriptReact.js (preferred), Angular, or Vue.jsResponsive design (Bootstrap, Tailwind), state management (Redux, Context API)Front-end testing (Jest, React Testing Library, Cypress) BackendC#, ASP.NET Core / .NET 6+RESTful and GraphQL APIsEntity Framework Core, LINQAuthentication & authorisation (OAuth2, JWT, Azure AD)Secure coding and API versioning Data & IntegrationSQL Server, Azure SQL, Cosmos DBORM optimisation, caching (Redis, Azure Cache for Redis)Data migration and ETL integration (APIs, pipelines) Cloud & DevSecOpsAzure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans)CI/CD automation, gated releases, and environment governanceInfrastructure-as-Code (Bicep, ARM, Terraform)Containerisation (Docker, AKS) and serverless (Azure Functions)Monitoring and observability (Application Insights, Log Analytics)Secrets management and vulnerability scanning (Key Vault, SonarQube, OWASP) Architecture & DesignMicroservices and event-driven design (Service Bus, Event Grid, Kafka)Domain-Driven Design (DDD) principlesResilient and scalable system patterns (circuit breakers, retries)Integration of legacy and modern platforms within hybrid environments What Success Looks Like8+ years in software engineering, with deep full-stack and cloud experience.Proven record of leading engineering teams through modernisation or platform rebuilds.Hands-on mastery of Azure DevOps and enterprise-scale CI/CD,DevSecOps highly desirableExcellent architectural judgement balancing delivery speed, stability, and cost efficiency.Track record of developing high-performing, collaborative technical teams.Strong communication and leadership presence able to influence peers and executives alike.A continuous learner, passionate about automation, clean code, and scalable design. Your Journey with the company:We believe great leaders inspire by doing.From your first week, youll work alongside engineers, architects, and data specialists shaping not just what we build, but how we build it. Youll have open access to the leadership team, visibility into our transformation roadmap, and the chance to leave a lasting mark on how technology powers the business. The role can be based 2 days a week out of London (City Area) or Peterborough and the rest remote. If London then occasional trips to Peterborough
Java Software Engineer
Response Informatics
Bournemouth
Remote or hybrid
Mid - Senior
£70,000
java
slack
prometheus
spring-boot
confluence
spring-mvc
+9
Java (Spring Boot, Spring MVC), REST APIsBuilding scalable backend services and APIsOracle, CockroachDB, SQLData modeling, queries, ORM, and migrationGKP (Google Kubernetes Platform), Docker, KubernetesDeploying and managing applications in private cloudMaven, GradleManaging builds and dependenciesJenkins, GitLab CI, GKP DevOpsAutomated build, test, and deployment pipelinesJUnit, TestNG, Mockito, Selenium, CypressUnit, integration, and end-to-end testingSwagger/OpenAPIDocumenting and testing REST APIsOAuth2, JWT, Spring SecurityImplementing authentication and authorizationELK Stack, Prometheus, Grafana, SplunkApplication monitoring and log analysisBash, PythonAutomating tasks and scriptsGithubSource code managementSonarQube, Checkstyle, ESLintStatic code analysis and quality enforcementJIRA, Confluence, Slack, TeamsAgile project management and team communication
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Frequently asked questions

What types of JWT jobs are available on Haystack?
Haystack lists a variety of JWT-related positions including Backend Developer, Security Engineer, Full-Stack Developer, and DevOps roles that require expertise in JSON Web Tokens (JWT) for secure authentication and authorization.
Do I need to have prior experience with JWT to apply for these jobs?
While some JWT jobs require prior experience with implementing and managing JSON Web Tokens, many roles welcome developers willing to learn JWT concepts, especially if you have a strong background in web security and token-based authentication.
How can I highlight my JWT skills on my Haystack profile?
To showcase your JWT skills, be sure to mention specific projects, frameworks, or technologies where you used JWTs for authentication or authorization. Include keywords like 'JSON Web Tokens,' 'JWT authentication,' and related security protocols in your profile summary and work experience.
Are JWT jobs available for remote work on Haystack?
Yes, many JWT job listings on Haystack offer remote work options. You can filter jobs by location and select 'Remote' to find remote-friendly opportunities that involve JWT expertise.
What are some common technologies used alongside JWT in job requirements?
JWT jobs often require knowledge of related technologies such as OAuth 2.0, OpenID Connect, RESTful APIs, Node.js, Express, React, and various backend frameworks where JWT is commonly used for securing API endpoints.
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