Overview: Own and evolve our Jenkins Shared Library powering multi-language builds (Java/Maven, Node/NPM, Python, Helm, Terraform, containers). Deliver... Read more
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 experienceGCS is acting as an Employment Business in relation to this vacancy.
Read lessSheffield, England, United KingdomContract
Python Developer - Agentic AI / GenAI - Investment BankingLondon, Farringdon | Hybrid | Inside IR35 | ContractWe... Read more
London, Farringdon | Hybrid | Inside IR35 | Contract
We are looking for a highly experienced Python Developer / AI Engineer to join a consulting engagement delivering Agentic AI and Generative AI solutions within an Investment Banking environment.
This is a hands-on development role requiring strong Python engineering alongside proven commercial experience building Agentic AI, LLM and RAG solutions.
Key SkillsStrong commercial Python developmentHands-on Agentic AI / AI Agent developmentLLMs / Generative AIRAG (Retrieval-Augmented Generation)OpenAI / GPTAnthropic ClaudeLangChain, LangGraph, AutoGen, CrewAI or similarFastAPI / API developmentAI orchestration, tool calling and guardrailsStrong Investment Banking / Capital Markets experienceExcellent communication and stakeholder-facing skillsThe RoleYou will work within a consulting team designing and developing production-grade AI solutions for an Investment Banking client.
The work will involve building Python-based AI applications, agentic workflows, LLM integrations and RAG solutions within a highly regulated enterprise environment.
Contract DetailsLocation: London, FarringdonWorking model: HybridIR35: Inside IR35Sector: Investment Banking / Capital MarketsContract: Initial contract with potential extensionPrevious Investment Banking experience is essential.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Role- Full Stack Pythomn DeveloperType- ContractDuration- 12+ monthsLocation- Philadelphia, PAOverview Seeking a Full Stack Python Developer to build... Read more
Role- Full Stack Pythomn Developer
Type- Contract
Duration- 12+ months
Location- Philadelphia, PA
Overview
Seeking a Full Stack Python Developer to build AI-driven security automation solutions within a Cyber Security Operations Center (CSOC). This is a hands-on engineering role focused on developing intelligent agents and automated workflows that improve threat detection, investigations, and incident response.
Key Responsibilities
Design, develop, deploy, and maintain production-grade security automation and AI-powered workflows.Build AI agents capable of accessing security data, using tools, maintaining context, and executing multi-step tasks.Automate processes across:Threat IntelligenceThreat HuntingDetection EngineeringSecurity InvestigationsIncident ResponseSecurity Data AnalysisApply advanced AI techniques including:Tool CallingRetrieval-Augmented Generation (RAG)Structured GenerationPlanning & ReflectionVerificationModel RoutingMulti-Agent CoordinationDesign memory, context management, task recovery, escalation, and human approval mechanisms.Reduce false positives and operational noise while improving response speed and consistency.Develop security controls and guardrails for AI systems.Create testing and evaluation frameworks to measure AI accuracy, reliability, security, and performance.Collaborate with security and engineering teams to translate operational challenges into scalable automation solutions.Take solutions from prototype to production and continuously optimize them.Required Qualifications
Bachelor's degree in Computer Science, Cybersecurity, Engineering, Information Systems, or related field (or equivalent experience).8+ years of experience in software engineering, security engineering, automation, AI/ML, or related technical roles.Strong hands-on software development experience.Experience building production-grade automation or AI-powered applications.Experience with LLMs, Generative AI, or Agentic AI technologies.Strong programming skills, particularly in Python or other modern languages.Experience integrating APIs, tools, data sources, and external systems.Understanding of AI agent concepts including tool use, retrieval, planning, memory, context management, and verification.Strong analytical, problem-solving, and scalable system design skills.Preferred Qualifications
Experience building agentic AI systems or autonomous security workflows.Experience with SOAR, SIEM, security automation, threat intelligence, threat hunting, detection engineering, or incident response.Knowledge of RAG, vector databases, embeddings, semantic search, and knowledge retrieval.Experience with multi-agent architectures, AI orchestration frameworks, and AI evaluation/testing frameworks.Familiarity with Kubernetes, cloud platforms, microservices, APIs, and distributed systems.Experience implementing human-in-the-loop controls and approval workflows.Proven ability to take AI solutions from proof of concept (POC) to production deployment.Understanding of enterprise AI security controls and best practices.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessPhiladelphia, Pennsylvania, United States of AmericaContract
This position is ideal for an engineer who enjoys solving complex problems and building new capabilities from the... Read more
This position is ideal for an engineer who enjoys solving complex problems and building new capabilities from the ground up. The role goes beyond traditional security scripting, SOAR configuration, or test automation. You will help develop intelligent systems that can augment and automate the work performed by threat intelligence, threat hunting, detection engineering, investigation, and incident response teams.
Key ResponsibilitiesDesign, develop, test, deploy, and operate production-grade security automation and AI-driven workflows.Build intelligent agents capable of securely accessing security data, invoking approved tools, maintaining context, and executing multi-step workflows.Develop automation that can assist with:Threat intelligenceThreat huntingDetection engineeringSecurity investigationsIncident responseSecurity data analysisApply modern AI and automation techniques, including:Tool callingRetrieval-augmented generation (RAG)Structured generationPlanningReflectionVerificationModel routingMulti-agent coordinationDesign mechanisms for memory, context management, task recovery, escalation, and human approval.Build automation designed to reduce operational noise and false positives while improving the speed and consistency of security response.Develop appropriate security controls and guardrails around AI agents and automated workflows.Create evaluation and testing strategies to measure the accuracy, reliability, security, and performance of automation.Evaluate emerging AI models, agent frameworks, automation platforms, and orchestration technologies.Prototype new capabilities and transition successful solutions into reliable production environments.Work closely with threat intelligence analysts, threat hunters, detection engineers, incident responders, and security-data engineers to understand operational challenges.Translate security requirements and operational processes into scalable technical solutions.Develop clean, maintainable, scalable, and well-documented code.Troubleshoot, monitor, and continuously improve automation running in production.Participate in architecture, design, code reviews, and technical decision-making.Identify opportunities to automate repetitive or time-sensitive security processes and improve overall SOC efficiency.Required QualificationsBachelor's degree in Computer Science, Engineering, Cybersecurity, Information Systems, or a related field, or equivalent professional experience.8+ years of experience in software engineering, security engineering, automation engineering, AI/ML engineering, or a related technical field.Strong hands-on software development experience.Experience building automation solutions or AI-powered applications for production environments.Experience working with Large Language Models (LLMs), generative AI, or agentic AI technologies.Strong programming skills in Python and/or another modern programming language.Experience integrating applications with APIs, tools, data sources, and external systems.Understanding of AI agent concepts such as tool use, planning, context management, retrieval, memory, and verification.Experience designing and implementing reliable, scalable technical solutions.Strong analytical and problem-solving skills.Ability to work with both software engineers and security professionals to translate operational challenges into technical solutions.Preferred QualificationsExperience building agentic AI systems or autonomous security workflows.Experience with security automation, SOAR, SIEM, or security orchestration platforms.Experience with cybersecurity operations, threat intelligence, threat hunting, detection engineering, or incident response.Experience with RAG, vector databases, embeddings, semantic search, or knowledge retrieval.Experience with multi-agent architectures and AI orchestration frameworks.Experience developing AI evaluation frameworks, testing harnesses, or benchmarking processes.Experience with Kubernetes, cloud platforms, microservices, APIs, and distributed systems.Experience implementing human-in-the-loop controls and approval workflows.Experience taking AI/automation solutions from proof of concept through production deployment.Familiarity with security controls and best practices for deploying AI systems in enterprise environments.What We're Looking ForWe're looking for a builder who can take an ambiguous security problem and turn it into a working, scalable automation solution.
The ideal candidate is comfortable getting hands-on with code, experimenting with emerging AI technologies, integrating multiple systems, and figuring out how to move an idea from prototype to production.
You don't necessarily need to come from a cybersecurity background. Strong AI, software engineering, and automation experience is the priority. You'll have the opportunity to work alongside experienced security professionals who can provide the domain expertise.
The OpportunityComcast's Cyber Security Operations Center is working toward a machine-speed SOC capable of responding quickly and effectively to large-scale and concurrent security incidents.
As a Senior Security Automation Engineer, you'll help build the intelligent automation that makes that possible-reducing manual work, cutting through noise and false positives, and giving security teams the ability to focus their expertise where it matters most.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessNew York City, New York, United States of AmericaContract
Python SDET | Trading Platforms | ContractPython SDET required for a leading financial markets organisation building and enhancing... Read more
Python SDET required for a leading financial markets organisation building and enhancing high-performance trading systems.
This role sits within a highly technical engineering team responsible for mission-critical trading platforms, market data services and distributed microservices. You'll play a key part in designing automated test frameworks, driving quality engineering practices and embedding automation throughout the CI/CD delivery lifecycle.
Essential SkillsStrong Python development experienceCommercial PyTest automation experienceSDET / Software Engineer in Test backgroundAPI and integration testingMicroservices and distributed systemsCI/CD pipeline automationDocker and KubernetesSQL and data validationLinux environmentHighly DesirableEquities, FX, Fixed Income, Commodities or Crypto trading platformsMarket data systemsKafka or messaging technologiesContract testing (Pact, PactFlow or similar)AWS, Azure or GCPLow latency or high-throughput systemsWhat You'll Be DoingBuilding robust Python automation frameworks using PyTestDesigning integration, API and end-to-end test solutionsAutomating validation across trading workflows and market data feedsWorking closely with developers, quants and platform engineersDriving test automation within modern CI/CD pipelinesImproving system quality, reliability and release confidenceExperience RequiredWe're particularly interested in engineers who have worked on electronic trading platforms, market data systems, exchange connectivity, order management systems, pricing platforms or other real-time financial systems.
Python | PyTest | SDET | Trading | Market Data | APIs | Microservices | CI/CD | Docker | Kubernetes
Please send across an updated CV if this position is of interest
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContract
Senior Rust Engineer | Version Control Systems | Open Source Infrastructure We are looking for an experienced Rust... Read more
Senior Rust Engineer | Version Control Systems | Open Source Infrastructure
We are looking for an experienced Rust Engineer to join a high-impact engineering initiative focused on the future of developer tooling, large-scale version control systems, and AI-assisted software development.
This role offers the opportunity to contribute to open-source technologies that are enabling next-generation development workflows across large repositories, distributed teams, and automated agent-based environments.
You will work on challenging systems-level engineering problems spanning source control, distributed systems, cloud-backed repositories, virtual file systems, performance optimisation, and developer experience.
What You'll Be Working On
Extending and enhancing the version control ecosystemContributing to gitoxide and Git compatibility initiativesBuilding cloud-native repository backends designed for enterprise-scale developmentDeveloping high-performance storage, caching, and virtual filesystem solutionsImproving support for large repositories and distributed workflowsDesigning extensibility frameworks, APIs, and plugin architecturesEnhancing developer tooling for AI-assisted and automated software engineering workflowsCollaborating directly with open-source maintainers and upstream communities
What We're Looking For
Essential
Strong commercial experience with RustDeep understanding of Git and modern version control conceptsExperience building developer tools, infrastructure platforms, SDKs, CLIs, or systems softwareStrong knowledge of software architecture and distributed systemsExperience contributing to open-source projectsTrack record of delivering high-quality production software
Highly Desirable
Experience with Git internals, source control systems, or repository storage technologiesContributions to projects such as Git, gitoxide, JGit, Mercurial, or similar toolingKnowledge of packfiles, commit graphs, refs, reftables, partial clone, or repository performance optimisationExperience with storage engines, filesystems, caching layers, or large-scale infrastructureFamiliarity with gRPC, distributed services, authentication systems, and cloud platformsOpen-source maintainer experience or a strong public GitHub profile
We are especially interested in engineers who actively contribute to open-source communities and enjoy working on technically demanding problems that have a broad impact across the software engineering ecosystem.
Why Join?
Work on cutting-edge developer infrastructureContribute directly to widely-used open-source projectsHelp shape the future of AI-enabled software developmentSolve complex technical challenges at the intersection of version control, cloud infrastructure, and developer productivityCollaborate with recognised experts in the open-source ecosystem
If you have a passion for Rust, developer tooling, distributed systems, and open-source software, we'd love to hear from you
GCS is acting as an Employment Business in relation to this vacancy.
Read lessAmsterdam, Noord-Holland, Netherlands (Kingdom of the)Contract
Job SummarySeeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect... Read more
Seeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect robotic storage racks through 3D camera systems. The role focuses on developing AWS IoT data pipelines, backend services, cloud integrations, and testing frameworks to support large-scale robotics deployments across multiple sites.
Key ResponsibilitiesBuild and maintain AWS IoT data pipelines using MQTT, AWS IoT Core, Lambda, and S3.Develop scalable backend services in Python for processing image and video data.Integrate cloud services with internal APIs and downstream systems.Own integration testing and ensure end-to-end system reliability.Review, validate, and enhance AI-generated code.Contribute to CI/CD, DevOps, monitoring, and deployment automation.Support validation, production rollout, and post-deployment stabilization activities.Collaborate with distributed engineering teams to deliver project milestones in a fast-paced environment.Required SkillsStrong Python development experience.Hands-on experience with AWS IoT Core, MQTT, Lambda, and S3.Expertise in device-to-cloud or IoT data pipelines.Experience with serverless architectures and API integrations.Strong understanding of CI/CD, DevOps, and production support.Experience with integration testing and system troubleshooting.Ability to work effectively in a collaborative, agile environment.Comfortable using and reviewing AI-assisted code development tools.Nice to HaveComputer Vision, image/video processing, or machine vision experience.Machine Learning or anomaly detection exposure.NVIDIA Jetson or edge-device familiarity.Experience in IoT, robotics, smart devices, industrial automation, or connected products.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessKansas City, Kansas, United States of AmericaContractRemote
Job SummarySeeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect... Read more
Seeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect robotic storage racks through 3D camera systems. The role focuses on developing AWS IoT data pipelines, backend services, cloud integrations, and testing frameworks to support large-scale robotics deployments across multiple sites.
Key ResponsibilitiesBuild and maintain AWS IoT data pipelines using MQTT, AWS IoT Core, Lambda, and S3.Develop scalable backend services in Python for processing image and video data.Integrate cloud services with internal APIs and downstream systems.Own integration testing and ensure end-to-end system reliability.Review, validate, and enhance AI-generated code.Contribute to CI/CD, DevOps, monitoring, and deployment automation.Support validation, production rollout, and post-deployment stabilization activities.Collaborate with distributed engineering teams to deliver project milestones in a fast-paced environment.Required SkillsStrong Python development experience.Hands-on experience with AWS IoT Core, MQTT, Lambda, and S3.Expertise in device-to-cloud or IoT data pipelines.Experience with serverless architectures and API integrations.Strong understanding of CI/CD, DevOps, and production support.Experience with integration testing and system troubleshooting.Ability to work effectively in a collaborative, agile environment.Comfortable using and reviewing AI-assisted code development tools.Nice to HaveComputer Vision, image/video processing, or machine vision experience.Machine Learning or anomaly detection exposure.NVIDIA Jetson or edge-device familiarity.Experience in IoT, robotics, smart devices, industrial automation, or connected products.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessCheyenne, Wyoming, United States of AmericaContract
Job SummarySeeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect... Read more
Seeking a Senior Python Developer to build and productionize a cloud-based Quality Control platform used to inspect robotic storage racks through 3D camera systems. The role focuses on developing AWS IoT data pipelines, backend services, cloud integrations, and testing frameworks to support large-scale robotics deployments across multiple sites.
Key ResponsibilitiesBuild and maintain AWS IoT data pipelines using MQTT, AWS IoT Core, Lambda, and S3.Develop scalable backend services in Python for processing image and video data.Integrate cloud services with internal APIs and downstream systems.Own integration testing and ensure end-to-end system reliability.Review, validate, and enhance AI-generated code.Contribute to CI/CD, DevOps, monitoring, and deployment automation.Support validation, production rollout, and post-deployment stabilization activities.Collaborate with distributed engineering teams to deliver project milestones in a fast-paced environment.Required SkillsStrong Python development experience.Hands-on experience with AWS IoT Core, MQTT, Lambda, and S3.Expertise in device-to-cloud or IoT data pipelines.Experience with serverless architectures and API integrations.Strong understanding of CI/CD, DevOps, and production support.Experience with integration testing and system troubleshooting.Ability to work effectively in a collaborative, agile environment.Comfortable using and reviewing AI-assisted code development tools.Nice to HaveComputer Vision, image/video processing, or machine vision experience.Machine Learning or anomaly detection exposure.NVIDIA Jetson or edge-device familiarity.Experience in IoT, robotics, smart devices, industrial automation, or connected products.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessSeattle, Washington, United States of AmericaContractRemote
AI Solutions Engineer (Contract)Location: Krakow - Hybrid Contract Length: Initial contract with extension potential Start Date: ASAPOverviewWe are... Read more
Location: Krakow - Hybrid
Contract Length: Initial contract with extension potential
Start Date: ASAP
We are seeking an experienced AI Solutions Engineer to identify, shape, and deliver AI-driven solutions that create measurable business value. Working closely with product and engineering teams, you will uncover high-impact opportunities, validate concepts through rapid prototyping, and ultimately build production-ready AI capabilities that improve customer outcomes, operational efficiency, resilience, and controls.
This is a hands-on engineering role where success is measured by delivering secure, scalable, and adoptable solutions into production. You will partner closely with AI Product Managers and platform teams to turn ideas into tangible outcomes across multiple workstreams.
Key ResponsibilitiesIdentify and qualify AI opportunities through data analysis, operational insights, process telemetry, and stakeholder engagement.Define and shape AI use cases, including problem statements, target users, success metrics, constraints, risks, and controls.Build rapid prototypes, proof-of-concepts, and technical spikes to validate feasibility and value.Engineer, deploy, and support production-grade AI solutions integrated with existing platforms and services.Integrate AI capabilities with APIs, data sources, authentication systems, audit tooling, monitoring, and logging frameworks.Establish KPIs, performance metrics, and monitoring capabilities to measure solution effectiveness and business value.Collaborate with product teams to prioritise opportunities and maintain a high-value delivery pipeline.Develop reusable assets including templates, reference architectures, shared libraries, standards, and implementation guides.Communicate progress, risks, dependencies, and technical recommendations to stakeholders.Support multiple concurrent initiatives within an Agile delivery environment.Essential Skills & ExperienceAI & AutomationProven experience building and delivering AI capabilities, tooling, or automation solutions.Strong understanding of AI solution design, implementation, and deployment.Experience identifying business problems and translating them into practical AI use cases.Software EngineeringStrong hands-on software engineering experience across the full development lifecycle.Experience designing, building, testing, deploying, and operating production services.Demonstrated ability to take prototypes and proofs of concept into enterprise-scale production environments.Strong experience with:PythonSQLAPIs and service integrationsData & AnalyticsStrong analytical mindset with experience using data to uncover opportunities and measure outcomes.Experience working with operational metrics, telemetry, logs, and product analytics.Ability to define meaningful KPIs and use insights to drive continuous improvement.Delivery & CollaborationExperience working closely with product and business stakeholders to solve complex problems.Comfortable operating in ambiguous environments and translating ideas into executable plans.Strong documentation, communication, and stakeholder management skills.Experience working within Agile delivery teams.Fluent English with the ability to collaborate across global and multicultural teams.Desirable ExperienceExperience delivering AI/ML or Generative AI solutions in production.Knowledge of:Retrieval Augmented Generation (RAG)LLM integrationsPrompt engineering and tooling patternsAI evaluation frameworksFamiliarity with Responsible AI principles including privacy, bias mitigation, auditability, and governance requirements.Experience working within regulated or highly controlled enterprise environments.Experience with:Kubernetes and containerisationCI/CD pipelinesInfrastructure as Code (IaC)API gatewaysSecrets managementObservability and monitoring toolingExperience creating reusable engineering frameworks, templates, and internal developer tooling that accelerate adoption across teams.What We're Looking ForYou are a pragmatic engineer who enjoys identifying opportunities, validating ideas quickly, and delivering measurable outcomes. You combine strong software engineering fundamentals with a passion for AI and automation, and you thrive in environments where you can influence direction while remaining hands-on with delivery.
Key Technology Focus: AI Development * Python * SQL * APIs * Automation * GenAI * Production Engineering * Cloud Platforms * Agile Delivery
GCS is acting as an Employment Business in relation to this vacancy.
Read lessPolandContract
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