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Job title

Java Developer with Neo4j

Job Type

Contract (6 Months)

Client / Industry

Bank

Required: Languages: Java 11+, HTML5, JavaScript

Front-End Frameworks: Angular

APIs: RESTful API Design

Databases: Neo4j, PostgreSQL

Testing: Junit, Mockito, Cucumber

Building: Maven

Tooling: GitHub, JIRA, Confluence, GitHub Copilot

The Developer Experience (DevX) Standards and Controls function is building a platform for control owners and development teams to manage/view their compliance with a range of software development controls.

The candidate would be working on re-platforming an application from a vendor platform (PCF) over to an internal bring your own code (BYOC) platform as well as modernising the application and resolving dependency issues.

YOUR RESPONSIBILITIES

Collaborate with developers, testers and the wider organisation to build and run products

Design, develop & implement back-end features as per backlog/priority with a small element of front-end development.

Collaborate with the rest of the engineering team to design and launch new features.

Proactively work with customers to resolve their issues and respond to feature requests.

Build APIs and microservices

Work in an agile CI/CD environment to deliver rapid iterations at a sustained velocity

Be an active member of a team, participating in peer reviews and in testing others code through automated test scripting

SKILLS & EXPERIENCE WE REQUIRE

Strong Java development experience (modern Java 11+).

Experience designing and building microservices architectural style applications.

Experience with Graph databases (experience with Neo4j is desirable).

Experience modernising legacy Java applications.

Experience with the design and build of REST APIs

Experience building HTML/JavaScript front-ends (experience with Angular is desirable).

Strong technical and analytical troubleshooting skills.

Experience in BDD and/or TDD approaches and frameworks (unit/integration test automation)

Experience resolving issues with dependencies (e.g. conflicts), performing upgrades and remediating dependencies with vulnerabilities.

Experience in working with Agile including the use of Jira/Confluence.

Be a proactive person who will not wait to be told what to do next or be unblocked by others

Good interpersonal skills.

Strong English skills, written and spoken.

GCS is acting as an Employment Business in relation to this vacancy.

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Role purpose

Deliver high-quality testing for identity processing and provisioning across the identity lifecycle (joiner/mover/leaver). You'll validate that identities, accounts, and entitlements are provisioned and removed accurately, securely, and in line with control expectations.

Key responsibilities

Execute functional, integration, and regression testing for identity processing and provisioning changes.Test end-to-end flows across source systems (e.g., HR), identity platform, directories (AD/LDAP), and target applications.Validate provisioning outcomes: account creation/updates, entitlement assignment/removal, approvals, and de-provisioning.Perform negative and exception-path testing (failed connectors, retries, reconciliation, manual overrides).Validate identity data mapping and transformations (attributes, rules, and role logic such as birthright access).Prepare and maintain test artefacts: test cases, test data, execution evidence, and test summary updates.Log and manage defects with clear steps, expected vs actual results, and supporting evidence (logs/screenshots/API responses).Support UAT and release activities by providing test status, risks, and go/no-go input.Collaborate with engineers, analysts, and platform teams to clarify requirements and improve test coverage.

Required skills & experience

Proven experience in software testing in complex integration environments.Strong understanding of IAM concepts: identity lifecycle, provisioning/de-provisioning, entitlements, RBAC/ABAC, approvals, recertification.Experience testing integrations across multiple systems (HR feeds, directories, IAM tools, and business applications).Solid SQL skills and ability to validate data in databases/logs; comfortable analysing batch files and API payloads.Familiarity with API testing tools (e.g., Postman) and test management/defect tools (e.g., Jira, ALM).Strong defect writing, stakeholder communication, and evidence-based reporting

Desirable skills

API testing experience (e.g., Postman) and basic understanding of REST/JSON.Exposure to IAM tools (e.g., SailPoint, Saviynt, Okta, Azure AD) and directories (AD/LDAP).Test automation experience (e.g., Java/Python, Selenium, REST-assured, Cypress) and CI/CD (e.g., Jenkins/GitLab).Understanding of audit/control requirements for access management and segregation of duties.

GCS is acting as an Employment Business in relation to this vacancy.

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Required: Languages: Java 11+, HTML5, JavaScript
Front-End Frameworks: Angular
APIs: RESTful API Design
Databases: Neo4j, PostgreSQL
Testing: Junit, Mockito, Cucumber
Building: Maven
Tooling: GitHub, JIRA, Confluence, GitHub Copilot

The Developer Experience (DevX) Standards and Controls function is building a platform for control owners and development teams to manage/view their compliance with a range of software development controls.

The candidate would be working on re-platforming an application from a vendor platform (PCF) over to an internal bring your own code (BYOC) platform as well as modernising the application and resolving dependency issues.

YOUR RESPONSIBILITIES
Collaborate with developers, testers and the wider organisation to build and run products
Design, develop & implement back-end features as per backlog/priority with a small element of front-end development.
Collaborate with the rest of the engineering team to design and launch new features.
Proactively work with customers to resolve their issues and respond to feature requests.
Build APIs and microservices
Work in an agile CI/CD environment to deliver rapid iterations at a sustained velocity
Be an active member of a team, participating in peer reviews and in testing others code through automated test scripting

SKILLS & EXPERIENCE WE REQUIRE
Strong Java development experience (modern Java 11+).
Experience designing and building microservices architectural style applications.
Experience with Graph databases (experience with Neo4j is desirable).
Experience modernising legacy Java applications.
Experience with the design and build of REST APIs
Experience building HTML/JavaScript front-ends (experience with Angular is desirable).
Strong technical and analytical troubleshooting skills.
Experience in BDD and/or TDD approaches and frameworks (unit/integration test automation)
Experience resolving issues with dependencies (e.g. conflicts), performing upgrades and remediating dependencies with vulnerabilities.
Experience in working with Agile including the use of Jira/Confluence.
Be a proactive person who will not wait to be told what to do next or be unblocked by others
Good interpersonal skills.
Strong English skills, written and spoken.

GCS is acting as an Employment Business in relation to this vacancy.

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GCS is acting as an Employment Business in relation to this vacancy.

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Overview:
Own and evolve our Jenkins Shared Library powering multi-language builds (Java/Maven, Node/NPM, Python, Helm, Terraform, containers). Deliver fast, secure, provenance-rich pipelines (SLSA, SBOM, digests) and strengthen supply‑chain integrity across teams.

Core Responsibilities:

Design and maintain Groovy pipeline steps (build, test, package, scan, deploy).Extend Python tooling for SLSA provenance, SBOM generation, hash/digest accuracy, and security scan aggregation (SonarQube, Sonatype IQ, SAST/Container).Optimize performance (parallel builds, caching, scope-reduced BOMs, dependency prefetch).Ensure artifact integrity (correct SHA1/SHA256 mapping, reproducible inputs, evidence modeling).Refactor legacy scripts (remove global state, consolidate hashing, standardize templates).Document ci-config.yaml standards and usage patterns.Mentor engineers on secure pipeline development and supply-chain practices.Troubleshoot and prevent pipeline incidents.

Essential Skills: -

7+ years engineering; 3+ in CI/CD platform or DevSecOps.Ownership and collaborative mindsets, able to operate with minimal supervision. Advanced Python development experience - (best coding practises, APIs, JSON/YAML processing, tooling scripts) - should demonstrate key projects in CVStrong Jenkins + Groovy shared library expertise.Deep Maven/NPM/Python packaging knowledge; exposure to Helm/Terraform and container image metadata.Supply-chain security (SLSA, CycloneDX SBOM, digests).Experience with SonarQube, Sonatype IQ, container and SAST scanning.Proven performance tuning (caching, parallelization, dependency pruning).Compliance Awareness.

Nice-to-Have

Artifact signing / attestations (cosign, OCI).Terraform module and Helm chart publishing patterns.GitOps or release automation experience.GCP/AWS cloud experience

GCS is acting as an Employment Business in relation to this vacancy.

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GCS is acting as an Employment Business in relation to this vacancy.

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Role Title: AWS DevOps Engineer

Location: Sheffield (Hybrid - 2 days per week onsite)

Role Category: Inside IR35

Overview:

We're recruiting for an experienced AWS DevOps Engineer to join an enterprise engineering team within a leading global financial services organisation.

This role offers the opportunity to work on large-scale AWS environments, combining cloud infrastructure, software engineering, automation, CI/CD and Infrastructure as Code. You'll work closely with engineering, architecture, cybersecurity and operations teams to deliver secure, resilient and highly available cloud-native solutions.

Responsibilities:

Design, build and maintain AWS cloud infrastructure across compute, storage, networking and IAM services.Develop and maintain Infrastructure as Code using Terraform and other automation tools.Build and support CI/CD pipelines for infrastructure and application deployments.Develop automation and backend services using Python and Golang.Design and maintain RESTful APIs, microservices and distributed cloud-native applications.Work with Docker, Kubernetes and serverless technologies across AWS environments.Support relational and NoSQL databases, including database schema and deployment changes.Implement and maintain database change management using Liquibase or similar tooling.Implement monitoring, logging, alerting and distributed tracing using technologies such as Splunk, ELK, Prometheus and Grafana.Troubleshoot production issues, perform root cause analysis and implement solutions to improve reliability and performance.Work closely with architects, developers, infrastructure and cybersecurity teams to support enterprise cloud platforms.Ensure cloud infrastructure and applications comply with security, governance, risk and regulatory requirements.Contribute to technical design, automation, continuous improvement and operational procedures.Support Agile delivery and contribute as a technical SME across cloud and DevOps initiatives.

Required Skills

Proven experience in a DevOps, Cloud Engineering, Platform Engineering or Software Engineering role.Strong hands-on experience with AWS in an enterprise environment.Strong understanding of AWS compute, storage, networking and IAM services.Strong Python development or automation experience.Proven experience with Terraform and Infrastructure as Code.Experience building and maintaining CI/CD pipelines using tools such as Jenkins, GitLab CI or equivalent.Strong experience with Linux, Docker and containerised environments.Experience with Kubernetes and/or serverless technologies.Experience developing RESTful APIs, microservices and distributed systems.Experience with relational and NoSQL databases.Experience with messaging, streaming or integration services.Strong experience with cloud monitoring, logging and alerting.Good understanding of cloud security, authentication, encryption and IAM.Strong troubleshooting, problem-solving and production support experience.Experience working within Agile environments.Excellent communication and stakeholder management skills.

Desirable Skills

Proficiency in Golang.Experience with Liquibase or similar database change management tools.AWS certifications such as AWS Certified Developer or AWS Certified DevOps Engineer.Experience with GCP or other public cloud platforms.Experience working within financial services or other regulated environments.Strong software engineering background combined with infrastructure experience.Experience with Splunk, ELK, Prometheus, Grafana or distributed tracing.Knowledge of DevSecOps, cloud governance and regulatory controls.Experience with non-functional testing and continuous testing practices.Experience with messaging and streaming technologies.

This is an excellent opportunity to join a high-performing engineering team supporting enterprise-scale AWS environments, with a strong focus on cloud infrastructure, Python development, automation, CI/CD, Infrastructure as Code, cloud-native engineering and secure software delivery.

GCS is acting as an Employment Business in relation to this vacancy.

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GCS is acting as an Employment Business in relation to this vacancy.

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Role Title: Azure DevOps Engineer

Location: Sheffield (Hybrid - 2 days per week onsite)

Role Category: Inside IR35

Overview

We're recruiting for an experienced Azure DevOps Engineer to join the Cybersecurity Product Sustained Engineering team of a leading global financial services organisation.

This role offers the opportunity to work on enterprise-scale Azure environments, supporting cloud infrastructure, automation, CI/CD and Infrastructure as Code. You'll work closely with engineering, architecture, security and operations teams to deliver secure, reliable and scalable cloud solutions.

Responsibilities

Design, build and maintain Azure infrastructure including Virtual Machines, Virtual Networks, subnets, private endpoints and Azure Storage.Develop and maintain Infrastructure as Code using Terraform, Bicep and ARM templates.Build and support CI/CD pipelines using Azure DevOps for infrastructure and application deployments.Develop Python automation and Azure Functions to support cloud-based solutions.Support Azure App Services and other custom-built applications across enterprise environments.Implement monitoring, logging and diagnostics using Azure Monitor, Application Insights and Log Analytics.Troubleshoot infrastructure, deployment and application issues and develop automated, scalable solutions.Work closely with architects, developers, security teams and stakeholders to support and evolve the Azure platform.Ensure cloud infrastructure and applications adhere to security, governance, compliance and regulatory standards.Produce clear technical documentation, infrastructure configurations and operational procedures.Contribute as a technical SME, providing guidance on cloud engineering, automation and infrastructure decisions.

Required Skills

Proven experience in a DevOps, Cloud Engineering, Platform Engineering or Infrastructure Engineering role.Strong hands-on experience with Microsoft Azure in an enterprise environment.Strong experience managing Azure Virtual Machines and Virtual Networks (VNets).Proven experience building and maintaining CI/CD pipelines, particularly using Azure DevOps.Strong Terraform experience with Infrastructure as Code.Hands-on programming or scripting experience using Python, PowerShell or Bash.Experience with Azure Storage and core Azure infrastructure services.Experience working within complex enterprise or data-centre environments.Strong troubleshooting and problem-solving skills.Excellent communication and stakeholder management skills.

Desirable Skills

Azure App Services and Azure Functions.Azure Monitor, Application Insights and Log Analytics.Bicep or ARM templates.AWS or other cloud platform experience.Cybersecurity or security engineering experience.Azure OpenAI / LLM integrations.Private Endpoints and advanced Azure networking.Experience working within regulated or financial services environments.Knowledge of cloud governance, security controls and DevSecOps practices.

This is an excellent opportunity to join a high-performing engineering team supporting enterprise-scale Azure environments, with a strong focus on cloud infrastructure, automation, CI/CD, Infrastructure as Code and secure engineering practices.

GCS is acting as an Employment Business in relation to this vacancy.

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Role Title: IAM Technical Lead

Location: Sheffield (Hybrid - up to 3 days per week onsite)

Role Category: Inside IR35

Overview

We're recruiting for an experienced Technical Lead to join the Identity & Access Management team of a leading global financial services organisation.

This role offers the opportunity to play a key role in a major Next Generation IAM transformation programme, providing technical leadership across the design and delivery of secure, scalable and enterprise-grade identity services.

Responsibilities

Own the technical solution and architecture for the IAM workstream.Define and maintain High Level Designs (HLDs) and Low Level Designs (LLDs).Lead technical decision-making and technology selection.Drive adoption of Zero Trust and identity-first design principles.Provide technical leadership and mentoring to engineering teams.Review solution designs, code and infrastructure changes.Manage technical risks, assumptions, dependencies and integration activities.Work closely with Architecture, Engineering, Security, Operations and third-party suppliers.Support Agile delivery, planning, estimation and technical requirements.Define and assure non-functional requirements including security, resilience, performance, scalability and observability.Ensure solutions are production-ready and operationally supportable.Champion DevSecOps, automation and continuous improvement.Support architecture governance, design authorities and technical steering groups.

Required Skills

Strong experience in enterprise Identity & Access Management (IAM/IDAM).Proven experience as an IAM Technical Lead, IAM Architect, Identity Architect or similar.Strong experience in solution architecture, HLDs and LLDs.Experience delivering IAM transformation within complex enterprise environments.Strong understanding of Authentication, Authorisation and Identity Lifecycle Management.Experience with Agile delivery, requirements engineering and backlog management.Strong stakeholder management and communication skills.Experience working across Architecture, Engineering, Security and Operations teams.Strong understanding of security, risk and compliance within enterprise environments.Experience working within financial services or another regulated environment is highly desirable.

Desirable Skills

Human and Non-Human / Workload Identity.Zero Trust Architecture.Policy-as-Code.Secrets Management.Certificate Lifecycle Management.API Security.Event-driven Identity Integration.Cloud-native Security.Observability, Monitoring and Audit.Secure Software Development Lifecycle (SSDLC).DevSecOps and Automation.Experience managing third-party technology partners and suppliers.

This is an excellent opportunity to join a major Next Generation IAM transformation programme, providing technical leadership across enterprise identity architecture and delivering secure, scalable and modern identity capabilities within a global financial services environment.

GCS is acting as an Employment Business in relation to this vacancy.

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