Senior Data Engineer Role (Python / Spark / Databricks) - Hybrid - Contract - Banking Role - Senior... Read more
Senior Data Engineer Role (Python / Spark / Databricks) - Hybrid - Contract - Banking
Role - Senior Data Engineer
Rate - £850 p/d (Inside IR35)
Duration - 6 months with very likely extension
Location - Hybrid / Liverpool Street (London) - 3 days per week in a Liverpool Street office
About the Role
Global financial institution seeking a highly skilled Senior Data Engineer to join a growing data engineering function responsible for delivering critical data platforms and analytics capabilities across the business.
This is a genuinely hands-on engineering role, requiring strong expertise in Python, Databricks, Spark/PySpark and SQL. The successful candidate will be actively involved in the design, development, optimisation and support of enterprise-scale data platforms, working alongside engineers, architects and business stakeholders to deliver robust and scalable solutions.
The role offers the opportunity to work on complex data challenges within a modern cloud-based environment, leveraging the latest data engineering technologies and best practices.
Key Responsibilities
Data Engineering & Development
Design, develop and maintain scalable data pipelines using Python, Databricks and PySparkBuild and optimise ETL/ELT solutions processing large-scale datasetsDevelop high-quality, reusable code and engineering frameworksDeliver robust, performant and maintainable data solutionsTroubleshoot and resolve complex production and performance issuesSupport the ongoing enhancement and modernisation of enterprise data platformsDatabricks & Data Platform Engineering
Develop and support Databricks-based data solutions and Lakehouse architecturesUtilise Delta Lake and Spark technologies to deliver scalable data processing capabilitiesOptimise distributed data processing workloads for performance and reliabilityImplement data quality controls and monitoring solutionsContribute to platform stability, scalability and operational excellenceSolution Delivery
Work closely with business and technology stakeholders to understand requirements and deliver effective solutionsParticipate in Agile delivery processes including sprint planning, refinement and estimationSupport the delivery of strategic data initiatives across multiple business areasCollaborate with architects, engineers and product teams to deliver high-quality outcomesIdentify and resolve technical risks and implementation challengesEngineering Best Practice
Promote software engineering best practices including testing, code reviews and version controlSupport CI/CD adoption and deployment automationContribute to coding standards and engineering governanceDrive continuous improvement across development and support processesMentor junior engineers and contribute to knowledge sharing within the teamRequired Skills & Experience
Strong commercial experience as a Data Engineer or Senior Data EngineerExpert-level Python development skillsExtensive hands-on experience with Databricks in enterprise environmentsStrong Apache Spark and PySpark expertiseAdvanced SQL development and optimisation skillsExperience designing and building large-scale ETL and data integration solutionsStrong understanding of distributed computing concepts and data processing frameworksExperience working with modern cloud platforms including Azure, AWS or GCPKnowledge of software engineering principles, testing and code quality practicesExperience working within Agile development environmentsExcellent problem-solving and troubleshooting capabilitiesDesirable Experience
Experience within investment banking, financial services or other highly regulated environmentsExposure to risk, trading, treasury or regulatory data domainsExperience with Kafka, streaming technologies or real-time data processingDatabricks certificationsExperience with Airflow, Databricks Workflows or similar orchestration toolsCI/CD pipeline development and DevOps practicesDocker and KubernetesExperience supporting data science or machine learning workloadsThis role will suit a Senior Data Engineer who enjoys remaining close to the technology and has strong recent experience building production-grade solutions using Python, Databricks, Spark/PySpark and SQL in enterprise environments.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Technical Assurance Manager (Cyber Security)Contract: 6 Months Location: London (1 day per week onsite / flexible) Day Rate:... Read more
Technical Assurance Manager (Cyber Security)
Contract: 6 Months
Location: London (1 day per week onsite / flexible)
Day Rate: Competitive
Start: ASAP
We're supporting a large, international enterprise in the search for an experienced Technical Assurance Manager to lead a cyber assurance and control effectiveness programme across a complex global environment.
This is a senior second-line cyber security position, responsible for independently assessing the effectiveness of security controls, driving assurance activity, overseeing technical reviews, and providing risk-based insight to senior stakeholders. The successful contractor will lead a small team while acting as a trusted adviser across cyber security, technology, audit and risk functions.
The Opportunity
You will own the planning and delivery of a risk-based technical assurance programme, providing independent oversight of security controls across infrastructure, cloud, identity, applications, vulnerability management, data security and incident response capabilities.
The role combines technical cyber security expertise, assurance methodology, stakeholder engagement and leadership. You'll engage with senior business and technology leaders, deliver actionable reporting, challenge control weaknesses, and drive continuous improvement across the control environment.
Key Responsibilities
Lead the delivery of a large-scale cyber technical assurance programme.Manage and mentor a team of Technical Assurance Analysts.Conduct independent second-line assessments of cyber security controls and control effectiveness.Review technical evidence, validate findings and assess both design and operating effectiveness of controls.Oversee control testing activities across cloud, infrastructure, networks, applications and identity environments.Drive continuous controls monitoring, automated assurance and data-driven reporting capabilities.Track remediation activities and ensure significant findings are appropriately managed and escalated.Develop executive-level reporting, dashboards and cyber risk metrics.Partner with Cyber Security, Internal Audit, Risk, Compliance, Legal and Technology teams to improve security outcomes.Act as a subject matter expert on cyber assurance, risk and control effectiveness.Required Experience
Strong background in Cyber Security Assurance, Technology Risk, IT Audit, Security Testing or Cyber Risk Management.Experience leading assurance reviews within large, complex enterprise environments.Deep understanding of second-line assurance and control effectiveness assessment.Experience assessing technical controls across cloud, infrastructure, identity, networks and applications.Strong working knowledge of frameworks such as:ISO 27001NIST Cybersecurity FrameworkNIST 800-53CIS ControlsMITRE ATT&CKExperience producing board-level reporting and translating technical findings into business risk.Excellent stakeholder management skills, with the ability to challenge constructively and influence senior leaders.Desirable Experience
Continuous Controls Monitoring (CCM) platforms.Automated assurance and evidence collection.PowerShell, Python or API-based automation.Cloud security assurance and modern identity controls.CISSP, CISM, CISA, CRISC, CCSP or ISO 27001 Lead Auditor certifications.GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContractRemote
Delivery Lead - Manufacturing & Operational Technology (OT)Location: London (1-2 days per week onsite, flexibility available) Type: Permanent... Read more
Location: London (1-2 days per week onsite, flexibility available)
Type: Permanent
Reporting To: Manufacturing & Operational Technology Workstream Lead
Salary: Competitive + Benefits
I'm partnering with a major global organisation embarking on a large-scale cyber security transformation programme that will shape the security and resilience of critical manufacturing and operational environments across an international business footprint.
This is a rare opportunity for an experienced Delivery Lead to drive the implementation of Operational Technology (OT) cyber security initiatives across manufacturing sites worldwide. You'll play a key role in delivering major cyber transformation projects that directly support operational resilience, regulatory compliance, and the protection of critical production systems.
The initial focus of the role will be the rollout of OT monitoring capabilities across priority manufacturing locations, with future projects likely to include Secure Remote Access, IT/OT network segregation, threat detection enhancements, and broader OT security improvement initiatives.
Working closely with manufacturing leadership, engineering teams, cyber security specialists, business stakeholders and third-party vendors, you'll be responsible for ensuring complex programmes are delivered successfully, on time, within budget, and aligned to security and operational objectives.
What You'll Be Doing* Leading the end-to-end delivery of OT cyber security programmes across multiple manufacturing environments.
* Translating strategic objectives into detailed delivery plans, milestones, dependencies and workstreams.
* Managing project governance, stage-gate approvals, reporting, budget tracking and delivery control.
* Coordinating internal technical teams, operational stakeholders and external suppliers to ensure successful implementation.
* Managing risks, issues, assumptions and dependencies across a complex transformation environment.
* Driving stakeholder engagement across engineering, operations, cyber, architecture and leadership teams.
* Supporting business change, adoption, training and operational readiness activities.
* Ensuring solutions transition effectively into BAU support models following deployment.
* Maintaining compliance with recognised security, governance and operational standards.
What We're Looking For* Proven experience delivering cyber security, technology transformation or digital change programmes.
* Experience leading large, multi-stakeholder projects across geographically dispersed organisations.
* Strong project delivery, governance and programme management capability.
* Experience working within complex, matrixed environments with competing priorities.
* Understanding of cyber security frameworks and standards such as NIST, ISO 27001, IEC 62443, CIS Controls and related regulatory requirements.
* Experience managing project budgets, reporting, forecasting and vendor delivery.
* Strong risk management and stakeholder engagement skills.
* Excellent communication skills with the ability to engage both technical and operational audiences.
* Ability to build trust and influence senior stakeholders across manufacturing, engineering, security and business leadership functions.
Desirable Experience* Delivery of Operational Technology (OT) or Industrial Cyber Security programmes.
* Manufacturing, industrial, food production, engineering, energy, utilities or critical infrastructure environments.
* IT/OT network segregation projects.
* OT monitoring and threat detection initiatives.
* Secure Remote Access deployments.
* Experience within federated organisations, large enterprise environments, consultancy or managed service providers.
* Certifications such as PMP, MSP, CISSP, CISM or equivalent.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Application Support Specialist - C# / SQL - Tier 1 Bank - 6 months - Hybrid Role -... Read more
Application Support Specialist - C# / SQL - Tier 1 Bank - 6 months - Hybrid
Role - Application Support Specialist
Rate - £416 per day
Duration - 6 months with very likely extension
Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office
Tech Stack
T/SQLC# .NETOracleRole
Application support responsibilities for development teams in production environments to cover all aspects such as communication with Data Centre/Help Desk staff, analysing/finding failure to reach a root cause, resolving issues by liaising with development teams, liaising with internal and external supports teams and providing explanations to our Business Clients.Tasks
Troubleshooting Applications in the event of failure and implementing solutions (Code fix, SQL scripting etc), including checking Windows Servers, Databases (SQL Server or Oracle) and any other relevant environments where the Application is running. In some cases, this will involve liaising with other application support team staff across London and New York.Liaising with the relevant support teams (such as Technical Support, Network, Infrastructure, DBA) when users experience Application issues.Communicating with primary support Helpdesk staff in London and New York to give the team necessary advice and suggestions.Working with the team members and the wider development team to establish best practices to support Applications.Working with the wider Development team and other support teams to analyse and establish appropriate Application configuration to meet Business requirements.Contributing and regularly joining technical and design workshops within the team to suggest ideas to achieve stable Application operations.Critically and actively contributing to define Application support standards to ensure their applications are fully capable of running safely in production.Participating in exercises to both plan and estimate work volumes for Application supports.Working with the application release team in the rollout of applications in production that minimize Application failures after release.Adding consideration of performance, scalability and security matters across design and implementation phases.Follow established incident and problem management processes, ensuring accurate ticket updates and clear communication with stakeholders and with any relevant people.Participating in definitions and configuration of Application environments in Disaster Recovery sites.Supporting the continuous improvement and updating Application support methodology for all members in support team, as well as the wider Application support departments.Out of office hours support required as part of production support team
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Graphic Design, PowerPoint, Content Specialist Role - Hybrid / Canary Wharf - 6 month Contract - Banking Role... Read more
Graphic Design, PowerPoint, Content Specialist Role - Hybrid / Canary Wharf - 6 month Contract - Banking
Role - Graphic Design, PowerPoint, Content Specialist
Industry - Banking / Finance
Duration - 6 months with very likely extension
Location - Remote / Canary Wharf - 3 days per week in a Canary Wharf office, London
Rate - £416 per day (Inside IR35)
Tasks
The candidate will be responsible for creating visually stunning PowerPoint presentations, designing documents, and editing visually appealing videos. Additionally, The candidate will be responsible for writing clear and concise technical documents and creating templates for a Word and PowerPoint presentations.As a Graphic Designer, The candidate will use expertise in design software such as Photoshop, Illustrator, and InDesign to create graphics that are both aesthetically pleasing and informative. The candidate will be tasked with creating a variety of visual materials.As a Content Publisher, The candidate will be looking after the location, version, and design for varieties of technical/non-technical documents/videos/graphics which exist or to be published in Development team.Duties
Create visually stunning PowerPoint presentations and design documentsEdit visually appealing videosCreate various visual materialsWrite clear, concise, engaging, and informative technical documents, including user manuals, reference guides, and release notes.Create templates for Word and PowerPoint presentationsUse expertise in design software such as Photoshop, Illustrator, and InDesign to create informative and aesthetic graphicsOrganise and maintain documentation in a logical and accessible manner, using appropriate tools and systemsEnsure documentation complies with industry standards, regulatory requirements, and company branding guidelinesReview and edit existing documentsUse Lucid chart and Visio to create diagrams, flowcharts, and other visual representations of dataUse expertise in design software such as Photoshop, Illustrator, and InDesign to create informative and aesthetic graphicsCreate diagrams, flowcharts, and other visual aids to enhance understanding of technical conceptsGCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Contract Opportunity | Tier 1 Investment Bank | Canary WharfOverviewOur client, a Tier 1 Investment Bank based in... Read more
Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy desktop solutions to modern web-based and cloud-enabled platforms.
The successful candidate will work across the full software development lifecycle, contributing to the enhancement of existing applications while helping shape the future-state architecture.
Key InformationRole: Senior C# Developer
Location: Canary Wharf, London (Hybrid Working)
Contract Length: 6 Months Initial Contract
Rate: £416 per day (Inside IR35)
Start Date: ASAP
This role forms part of a wider transformation initiative focused on:
Modernising legacy desktop applicationsMigrating technology platforms from on-premise infrastructure to AzureSupporting the transition from desktop-based solutions to web technologiesImproving application performance, maintainability and scalabilityDelivering new functionality aligned to business and regulatory requirementsThe successful contractor will work closely with development teams, business stakeholders and architecture functions to deliver high-quality software solutions within a complex enterprise environment.
Key ResponsibilitiesDevelop and maintain enterprise-grade applications using C#Enhance and support existing WPF and WinForms applicationsContribute to the migration of desktop applications towards web-based architecturesBuild and integrate APIs and backend servicesWrite efficient SQL queries and stored proceduresCollaborate with business analysts, architects and end users to understand requirementsParticipate in code reviews and promote development best practicesTroubleshoot production issues and contribute to continuous improvement initiativesSupport the adoption of Azure technologies as part of the broader cloud transformation strategyRequired Skills & ExperienceEssentialStrong commercial experience developing applications using C#/.NETProven expertise with WPF or WinformsStrong SQL or Oracle development skillsUnderstanding of software design principles and development best practicesExperience working within complex enterprise environmentsExperience working with AzureDesirableExperience with JavaScriptExposure to ReactExperience contributing to application modernisation programmesKnowledge of Azure cloud technologiesExperience within Financial Services, Investment Banking or Capital Markets environmentsPersonal AttributesStrong analytical and problem-solving skillsExcellent communication and stakeholder management abilitiesAbility to work independently in a fast-paced environmentCollaborative mindset and willingness to mentor junior developersComfortable balancing support of legacy systems alongside modernisation initiatives
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
AI Copilot Developer - Power Apps - Power platform - Banking - Hybrid Role - AI Copilot DeveloperRate... Read more
AI Copilot Developer - Power Apps - Power platform - Banking - Hybrid
Role - AI Copilot Developer
Rate - £490 per day (Inside IR35)
Duration - 6 months with very likely extension
Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office
Tech Stack
CopilotPowerappsPower platformJavascriptRole
Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users and stakeholders to understand requirements, design innovative solutions, and bring them to life through development, testing, and deployment.Tasks
Design, develop, test, and deploy AI-powered solutions using Microsoft Copilot Studio, Power Platform, and Microsoft 365 technologies.Build and maintain intelligent agents, conversational AI experiences, and automated business processes.Integrate AI solutions with enterprise systems, including Dataverse, SharePoint, Power BI, Microsoft Fabric, SQL, and other business applications.Collaborate with business stakeholders to gather requirements, identify AI opportunities, and deliver innovative solutions that improve efficiency and user experience.Apply best practices for security, governance, compliance, and Responsible AI to ensure enterprise-grade solutions.Support solution architecture, documentation, testing, deployment, and ongoing maintenance activities.Contribute to continuous improvement by identifying opportunities to leverage AI, automation, and low-code technologies to enhance business processes and decision-making.Provide technical support, troubleshooting, and knowledge sharing across AI, Copilot, and Power Platform initiatives
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Solutions Architect - Tier 1 Bank - Canary Wharf Role - Application ArchitectDuration - 6 months with very... Read more
Solutions Architect - Tier 1 Bank - Canary Wharf
Role - Application Architect
Duration - 6 months with very likely extension
Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office
Rate - £600 per day (Inside IR35)
Experience -
In depth understanding of Object Orientated programming concepts as well as of the full Software Development Life Cycle.Good understanding of MS .NET Framework environments.Knowledge and experience of Agile methodologyKnowledge of Cloud and AI technologies that can be adopted into the workplaceExtensive experience working as a software and solutions architect.Experience in designing of high-level concepts for software solutions.Experience in development of Azure cloud-based as well as on-prem solutions.DevOps and SCRUM experienceExperience in Cloud migration planning and executionTasks -
Create and improve architectural standards for on premise and azure cloud software products, develop cloud migration procedures and guidelines.Assist in cloud migration projects, assess readiness and dependencies, optimize for the Cloud.Create and review blueprints for software products, provide guidance on improving architecture.Coding mission critical parts and performing code reviews.Assist on integrating AI technologies to improve existing systems.Ensure that applications are in line with compliance and regulatory standards and conduct regular security assessments of these applications.Technical writing (creating related documentation)Assist developers with any architecture related issues and queries.GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
IT Business Partner (SC Cleared)Location: London (Hybrid) Employment Type: Full-Time Department: ITAbout the RoleWe are seeking an experienced... Read more
We are seeking an experienced IT Business Partner to act as the strategic link between IT, business stakeholders, and operational teams. This is an excellent opportunity for a highly motivated professional with strong business analysis, project delivery, and stakeholder management experience to help drive technology-enabled business transformation.
The successful candidate will work closely with business leaders to understand strategic objectives, identify opportunities for process improvement, and ensure technology solutions are aligned with operational and business goals. You will act as a trusted advisor, helping shape system enhancements, drive innovation, and deliver successful IT projects from inception through to business-as-usual support.
Key ResponsibilitiesPartner with business stakeholders to understand business objectives, challenges, and requirements.Facilitate workshops, meetings, and stakeholder discussions to gather and define business requirements.Apply business analysis techniques to produce clear business requirements, functional specifications, process maps, and user stories.Identify opportunities for process optimisation, service improvement, and technology innovation.Develop and maintain strong relationships with key business contacts and operational teams.Provide expert guidance on business systems capabilities, enhancements, and configuration options.Manage IT and business change projects through the full project lifecycle.Coordinate internal teams, suppliers, and third parties to deliver technology solutions successfully.Support system configuration, testing, troubleshooting, and implementation activities.Produce high-quality project documentation, status reports, test plans, user guides, and operational procedures.Manage project risks, issues, dependencies, and stakeholder expectations.Support transition activities to ensure successful handover into operational support teams.Contribute to continuous improvement of IT processes, tools, standards, and governance practices.Essential Skills & ExperienceProven experience as a Business Analyst, Technical Business Analyst, IT Business Partner, Systems Analyst, or similar role.Strong experience gathering, analysing, and documenting business and functional requirements.Demonstrable experience delivering IT projects and working across multidisciplinary teams.Excellent stakeholder management and relationship-building skills.Strong business process analysis and process improvement experience.Ability to translate technical concepts into language suitable for both technical and non-technical audiences.Experience producing process maps, specifications, requirements documentation, and test materials.Strong analytical and problem-solving capabilities.Experience supporting system implementations, upgrades, or digital transformation initiatives.Understanding of the Software Development Lifecycle (SDLC).Excellent communication, presentation, and facilitation skills.Experience managing multiple priorities in a fast-paced environment.Desirable ExperienceExperience within housing, property services, repairs and maintenance, or social housing environments.Exposure to ITIL, Agile, PRINCE2, or other project delivery frameworks.Knowledge of change management, release management, risk management, and issue management processes.Understanding of relational databases and SQL/T-SQL.Experience with enterprise applications such as Microsoft Dynamics, ServiceNow, Salesforce, ERP, CRM, or similar business platforms.Personal AttributesStrong customer and service focus.Highly organised with excellent attention to detail.Able to balance competing priorities and work effectively under pressure.Collaborative team player with the ability to work independently.Proactive and solution-oriented mindset.Commitment to continuous improvement and delivering high-quality outcomes.GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Prefered candidate from public sector such as Home Office, Defra, FCDO, MOJ, MOD, Cabinet Office, Centeral Gov bodies.... Read more
Prefered candidate from public sector such as Home Office, Defra, FCDO, MOJ, MOD, Cabinet Office, Centeral Gov bodies. SC Active or recently lapsed would be preferred.
Principal Accountabilities
Incorporate feature requests into a product roadmapReview and prioritise backlogDevelop user stories and define acceptance criteriaSet sprint goalsWrite acceptance testsPlan releases and upgradesFollow progress of work and address production issues during sprintsAnalyse preferences and requests of end usersRefine our agile methodology based on results and client feedbackKeep track of industry trends
Complexity, Planning And Time Spans
Management of own workload and time.Coordinating delivery datesTracking and monitoring of Development workReviewing, collating, maintaining and highlighting changes to agreed feature requestsIdentifying, assessing and reporting product risks and issues, engaging with internal and external contacts where necessaryMaintaining financial controls and systems for recording, monitoring, forecasting and budgeting development expenditure and resourcesOrganising and facilitating release closures, as well as ensuring release notes and user guides are available at releaseMaintaining and communicating product management standards and best practicesAssisting in the maintenance, reviewing, and improving of departmental and product management office policies and proceduresProducing weekly and monthly performance/status reports for the IT SLT and Stakeholders
Difficulties And Demands Of The Role
Balancing the changing demands of the businessEnsuring all elements of the product development are aligned to meet tight and demanding deadlines.Understanding and keeping on top of all the work that is going on across the business to ensure all work is aligned and doesn't' conflict.Strong organisation skills and management of time and information gathering skills.Clear understanding of the systems and a clear understanding of what needs to be delivered.
Typical Decisions Made By The Jobholder
How best to implement a request and what impact it has on delivery.How to prioritise and weigh demands of requests from business based on impact and urgency. When a serious issue will delay the product release significantly or increase costsWhere a major change in approach needs to be followed that will impact other teams working
Facts And Figures
Detail the main variables against which the role will be measured. These variables can include sales targets, costs, profits, turnover, etc.
Success will be measured successful by continued product development completed on time and on budget.
Principal Measures
Quality of project and request completionDelivery of client agreed commitmentsUptake of IT developments within the business.Amount of Re-work IT Development that needs to be undertook.GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContractRemote
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