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Tech Lead

We're working with a growing international technology company seeking an experienced Tech Lead to drive technical direction and help build a small engineering team.

Location: Poland (remote-friendly)Contract: Permanent or B2BWhat you'll bring7+ years of software engineering experience2+ years in a technical leadership roleStrong Java and Python expertiseExperience with Spring Boot and ideally ReactSolid understanding of distributed systems, software architecture, and engineering trade-offsExperience with AWS, CI/CD, GitOps, and cloud infrastructureAbility to influence technical and non-technical stakeholders

Nice to have

Machine learning or optimisation experienceKubernetes knowledgeSaaS product background

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

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TECHNICAL LEAD - IDENTITY & ACCESS MANAGEMENT (IAM) - CONTRACT

Sheffield | Hybrid (1-3 Days On-Site)
Until 30th November 2026 | High Chance of Extension
£600-650 Per Day | Umbrella (Inside IR35)

THE PROJECT

A global financial services organisation is delivering a large-scale Identity & Access Management (IAM) transformation and is looking for an experienced Technical Lead to help shape and deliver next-generation identity services. This is an opportunity to lead the technical direction of a major enterprise programme, driving secure, scalable IAM solutions across a complex global environment.

Lead the technical design and architecture for enterprise IAM solutions.Define and maintain High & Low Level Designs (HLDs/LLDs).Drive technical decision-making, solution governance, and technology selection.Ensure alignment with security, enterprise architecture, and regulatory standards.Champion Zero Trust and Identity-First security principles.Provide technical leadership, mentoring, and design assurance across engineering teams.Support delivery planning, technical risk management, and cross-team integration.Ensure solutions are secure, resilient, scalable, and production-ready.SKILLS NEEDEDProven experience leading enterprise IAM programmes within Financial Services.Strong background in Identity & Access Management, Authentication, and Authorisation.Experience designing secure, scalable architectures in complex enterprise environments.Knowledge of Zero Trust, Identity Lifecycle Management, Secrets Management, and API Security.Experience with DevSecOps, Secure SDLC, cloud-native security, and automation.Strong stakeholder management and communication skills across technical and business teams.Experience working within Agile delivery environments.

Bonus: Experience with Workload Identity, Policy-as-Code, Certificate Lifecycle Management, Event-Driven Identity Integration, and Observability.

YOUR IMPACT

You'll play a key role in transforming enterprise Identity & Access Management for a global banking organisation, helping deliver secure, scalable identity services that underpin critical business operations. Your technical leadership will shape future architecture, improve operational resilience, and support the delivery of one of the organisation's largest security transformation programmes.

Sound good? Apply ASAP - this opportunity is expected to move quickly.

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

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TECHNICAL LEAD - IDENTITY & ACCESS MANAGEMENT (IAM) - CONTRACT

Sheffield | Hybrid (1-3 Days On-Site)
Until 30th November 2026 | High Chance of Extension
£600-650 Per Day | Umbrella (Inside IR35)

THE PROJECT

A global financial services organisation is delivering a large-scale Identity & Access Management (IAM) transformation and is looking for an experienced Technical Lead to help shape and deliver next-generation identity services. This is an opportunity to lead the technical direction of a major enterprise programme, driving secure, scalable IAM solutions across a complex global environment.

Lead the technical design and architecture for enterprise IAM solutions.Define and maintain High & Low Level Designs (HLDs/LLDs).Drive technical decision-making, solution governance, and technology selection.Ensure alignment with security, enterprise architecture, and regulatory standards.Champion Zero Trust and Identity-First security principles.Provide technical leadership, mentoring, and design assurance across engineering teams.Support delivery planning, technical risk management, and cross-team integration.Ensure solutions are secure, resilient, scalable, and production-ready.SKILLS NEEDEDProven experience leading enterprise IAM programmes within Financial Services.Strong background in Identity & Access Management, Authentication, and Authorisation.Experience designing secure, scalable architectures in complex enterprise environments.Knowledge of Zero Trust, Identity Lifecycle Management, Secrets Management, and API Security.Experience with DevSecOps, Secure SDLC, cloud-native security, and automation.Strong stakeholder management and communication skills across technical and business teams.Experience working within Agile delivery environments.

Bonus: Experience with Workload Identity, Policy-as-Code, Certificate Lifecycle Management, Event-Driven Identity Integration, and Observability.

YOUR IMPACT

You'll play a key role in transforming enterprise Identity & Access Management for a global banking organisation, helping deliver secure, scalable identity services that underpin critical business operations. Your technical leadership will shape future architecture, improve operational resilience, and support the delivery of one of the organisation's largest security transformation programmes.

Sound good? Apply ASAP - this opportunity is expected to move quickly.

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

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- Test lead, ability to lead UAT end to end, taking a user story, creating test cases, testing, producing test outputCloud desktop technology - experience preferred. Leading E2E UAT from scratch

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

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AI Tech Lead (Python | Azure | LLM / Agentic Systems)
Contract- Hybrid, UK (One day per month in the London office)

We're looking for a strong AI Tech Lead with Python engineering with proven experience building production-grade systems on Azure, alongside hands-on exposure to modern AI and agentic architectures.

This role is focused on designing and delivering scalable AI-enabled services, working across LLM orchestration, tool integration and real-world deployment in cloud environments.

Key Responsibilities

Design and build robust backend services using PythonDevelop and deploy applications on Azure (AKS, Functions, App Service or similar)Build and optimise AI / agentic systems, including:LLM orchestration workflowsRetrieval Augmented Generation (RAG) pipelinesTool usage / agent frameworksEvaluation and performance tuning of modelsWork closely with product and engineering teams to translate requirements into scalable solutionsEnsure high standards of code quality, testing and performance in production systems

Required Experience

Strong hands-on Python development experience (production systems)Proven experience deploying and managing applications on AzureExperience with containerisation and/or orchestration (e.g. Kubernetes / AKS)Practical experience building AI-driven solutions in productionStrong understanding of:LLM ecosystems (e.g. OpenAI, OSS models)RAG architecturesAgent frameworks / tool integrationExperience designing scalable, reliable cloud-native systems

Desirable

Experience with MLOps / model lifecycle managementFamiliarity with frameworks such as LangChain, LangGraph or similarExposure to CI/CD pipelines and infrastructure as code

Overview

High-impact role working on cutting-edge AI systemsStrong engineering focus - not just experimentation, but production deliveryOpportunity to shape architecture and design decisions

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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Technical Lead - Kubernetes

Contract | Hybrid | 3 days onsite either in Sheffield, Leeds or Birmingham

We're looking for a hands‑on Kubernetes Technical Lead to guide a platform engineering team and own a large‑scale, multi‑cloud Kubernetes platform for a major banking client.

What You'll Do

Lead the platform team through technical challenges and best practices

Support platform ownership - estimation, planning, stakeholder engagement

Act as the technical front for the Managed Kubernetes Platform

Drive strategic improvements and multi‑cloud expansion

Support customer queries and platform adoption

What You Bring

Kubernetes expertise across GKE, AKS, EKS

Multi‑cloud experience - GCP, Azure, AWS

Terraform for IaC

Golang for tooling, proxies, extensions

CI/CD - Azure DevOps, Jenkins, GitHub Actions

Observability: Prometheus, Grafana, ELK

Security: Vault, Kong, Okta/OAuth

Bonus: Full‑stack capability (Java, Scala, NestJS, ReactJS)

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

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Location : Sheffield / London (2/3 days a week in office)

Role Overview

A hands-on Technical Lead to establish and grow a new sitecore development capability from the ground up. This is a foundational role within a newly formed DevOps POD merging into an existing team, requiring someone who leads by technical example, builds team culture, and delivers high-quality Sitecore solutions across backend and frontend.

Key Responsibilities

Provide technical leadership across a cross-functional Sitecore development team, including engineers based in India, Poland and China.Actively contribute to and review pull requests; maintain code quality and architectural standardsUnblock engineers and provide clear, pragmatic technical direction day-to-dayDrive Agile ceremonies - sprint planning, reviews, retrospectives - and embed engineering best practicesEngage directly with business stakeholders to translate requirements into sound technical solutionsDefine and evolve the team's development standards.Support hiring and onboarding of backend and frontend developers as the team scales

Required Skills & Experience

Strong hands-on Sitecore experience (XM/XP/XM Cloud)Proficiency with Sitecore's architecture, content modelling, and multisite configurationsExperience with Sitecore headless delivery (JSS, Experience Edge) desirable.C# / .NET development (ASP.NET Core)RESTful API design and integration patternsSitecore Helix architecture principlesExperience with Azure or other cloud hosting environments is a plus.Working knowledge of modern JavaScript frameworks (React, Next.js preferred)Ability to review frontend code critically and guide frontend engineers effectivelyGit-based workflows, branching strategies, and agile cultureFamiliarity with unit testing, integration testing, and automation testing approachesAbility to instil QA discipline within a development teamProven experience leading a high-performing development team in a hands-on capacityStrong communicator across technical and non-technical audiencesStructured, pragmatic approach to Agile delivery

Nice to Have

Sitecore certification(s)Experience building or rebuilding a team/capability from scratchFamiliarity with Sitecore CDP, Personalize, or Search

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

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Technical Lead - Sitecore

Location: Sheffield / London (UK)

Role Overview
A hands-on Technical Lead to establish and grow a new sitecore development capability from the ground up.
This is a foundational role within a newly formed DevOps POD merging into an existing team, requiring someone who leads by technical example, builds team culture, and delivers high-quality Sitecore solutions across backend and frontend.

Key Responsibilities
∙ Provide technical leadership across a cross-functional Sitecore development team, including engineers based in India, Poland and China.
∙ Actively contribute to and review pull requests; maintain code quality and architectural standards
∙ Unblock engineers and provide clear, pragmatic technical direction day-to-day
∙ Drive Agile ceremonies - sprint planning, reviews, retrospectives - and embed engineering best practices
∙ Engage directly with business stakeholders to translate requirements into sound technical solutions
∙ Define and evolve the team's development standards.
∙ Support hiring and onboarding of backend and frontend developers as the team scales

Required Skills & Experience

Sitecore
∙ Strong hands-on Sitecore experience (XM/XP/XM Cloud)
∙ Proficiency with Sitecore's architecture, content modelling, and multisite configurations
∙ Experience with Sitecore headless delivery (JSS, Experience Edge) desirable.

Backend
∙ C# / .NET development (ASP.NET Core)
∙ RESTful API design and integration patterns
∙ Sitecore Helix architecture principles
∙ Experience with Azure or other cloud hosting environments is a plus.

Frontend
∙ Working knowledge of modern JavaScript frameworks (React, Next.js preferred)
∙ Ability to review frontend code critically and guide frontend engineers effectively

DevOps & Tooling
∙ Git-based workflows, branching strategies, and agile culture.

Testing & Quality
∙ Familiarity with unit testing, integration testing, and automation testing approaches
∙ Ability to instil QA discipline within a development team

Leadership
∙ Proven experience leading a high-performing development team in a hands-on capacity
∙ Strong communicator across technical and non-technical audiences
∙ Structured, pragmatic approach to Agile delivery

Nice to Have
∙ Sitecore certification(s)
∙ Experience building or rebuilding a team/capability from scratch
∙ Familiarity with Sitecore CDP, Personalize, or Search

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

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