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We are excited to announce a fully remote opportunity with a leading financial client based in Poland. We're looking for talented Full stack engineer who are passionate about building modern web applications and have strong expertise in Java, Springboot, Microservices, React, CSS and NX Monorepo.

Key requirements:

Strong experience in Java and Spring BootHands-on expertise with microservices architectureFrontend development experience with React and TypeScriptExperience working with Nx monorepo setups and CSSMandatory experience with authentication systems such as Keycloak and OAuth2Good experience in Microfrontends.Background in building and shipping scalable applications with reusable componentsSolid understanding of SDLC processes, CI/CD automation, and deployment pipelines

This is a fantastic chance to work with a financial industry leader, contribute to cutting-edge projects, and collaborate with a global team-all from the comfort of your home.

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

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Senior Network Security Consultant (DORA Programme) - Contract

Location: Fully Remote (Europe)

Preferred Location: Poland

Contract Duration: 12 months initial (strong likelihood of extension)

Start Date: ASAP

Overview

We are supporting a major European financial services organisation on a large-scale DORA compliance programme and are looking to onboard multiple Senior Network Security Consultants on a contract basis.

This is a high-impact engagement focused on delivering third-party infrastructure and security assessments at scale. You will join an established Cloud & Network Security function, contributing to critical regulatory compliance activities.

The Role

As a Senior Consultant, you will operate at a strategic and advisory level, focusing on assessment, architecture review, and risk evaluation rather than hands-on engineering.

Key responsibilities include:

Performing security and risk assessments of external supplier infrastructure and integrationsReviewing network architecture, firewall configurations, and technical designsIdentifying security vulnerabilities and compliance gaps aligned to DORAProducing technical risk dossiers and assessment reportsSupporting formal governance and decision-making forums on infrastructure riskProviding security architecture recommendations and remediation roadmapsContributing to firewall policy reviews and optimisation initiativesEmbedding into an existing security operations and architecture team

Candidate Requirements

Experience

5-10+ years' experience in network security, security architecture, or infrastructure security

Strong background in regulated environments (financial services highly desirable)

Experience conducting security assessments, audits, or compliance reviews

Ability to interpret high-level and low-level technical designs

Technical Skills

Strong knowledge of network security architecture and infrastructure design

Hands-on experience with leading vendors such as:

Palo AltoCheck PointCiscoFortinet

Familiarity with core security technologies, including:

Firewalls (including SASE / Prisma)IDS/IPSSIEMWAFDLP

Understanding of:

Cloud security (AWS, Azure, or GCP)Third-party risk / supplier security assessmentsSecurity frameworks and regulatory environments (DORA awareness beneficial but not essential)

Key Competencies

Strong analytical and problem-solving skillsAbility to assess complex technical risk and make clear recommendationsConfident in stakeholder engagement and influencing decisionsExcellent documentation and communication skillsAbility to work independently and as part of a distributed team

Engagement Details

Multiple contract roles available (individual and team-based options)Fully remote with preference for Poland-based consultantsLong-term programme with significant pipeline of workFlexible commercial structure with competitive ratesImmediate onboarding required

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

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Role: Cyber Security Analyst
Duration: 6-month rolling contract
Working Pattern: Krakow, Hybrid - Handful of days per month

GCS Cyber are partnered with a global financial services organisation undergoing multiple large-scale transformation programmes across their Cyber Security division, including scaling their cloud security capability. We're hiring a Cyber Security Analyst to help drive the maturity of our cloud security posture and play a key role in developing and enhancing our CNAPP tooling.

What you'll be doing:

Enhancing and developing CNAPP capabilities, including automation, governance, dashboards, and reportingWorking closely with cloud engineers, architects, and cyber teams to align with mandatory controls and best practiceDriving continuous improvement and adoption of cloud security standards across multi‑cloud environments

Must have:

Solid understanding of cloud security principles and frameworks (CIS, NIST)Experience across AWS, Azure, or GCPFinancial Services experience is an advantage.

To find out more, please apply now or send a copy of your CV to [email protected]

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

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Role: Cyber Threat and Controls Consultant - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are partnered with a global financial services organisation undergoing multiple large-scale transformation programmes across their Cyber Security division.

In this role you will perform threat and control assessments across the business, you'll partner with architects, developers and cloud specialists across the business to review designs, challenge assumptions, and ensure services are built with strong security foundations. You'll also contribute to improving the threat‑assessment process, sharing your expertise across a global community and helping uplift security practices across the organisation.

Must have:

Strong understanding of modern security principles and the ability to break down how systems really work under the hoodHands‑on background in identifying weaknesses, misconfigurations or attack paths across applications, infrastructure or integrated servicesFamiliarity with recognised analysis frameworks (e.g., threat identification or attack‑pattern libraries) and able to translate findings into clear, meaningful risk language

To find out more, please apply now or send a copy of your CV to [email protected]

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

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Role: Security Operations Engineer

Duration: 6-month rolling contract

Working Pattern: Hybrid - multiple UK locations

GCS Cyber are partnered with a global organisation enhancing their Cyber Security Operations capability as part of a wider security transformation. They are now seeking a Security Operations Engineer with deep hands‑on experience across SecOps tooling, detection engineering and incident response enablement.

Key Responsibilities

Engineer and optimise SIEM, EDR/XDR, SOAR, PAM and vulnerability platforms.Develop and tune detections (KQL/Sigma) to improve visibility and reduce false positives.Support SOC teams with investigations, tooling improvements and root cause analysis.Build automation workflows and SOAR playbooks to streamline response.Improve logging, telemetry and threat‑hunting capabilities.Ensure platform health, performance and operational resilience.

Required Experience

Strong background in SecOps, SOC engineering or technical cybersecurity roles.Hands‑on experience with SIEM (Splunk or Sentinel), EDR/XDR, SOAR and PAM tools.Proven ability to build/tune detections and optimise alerting.Familiar with incident response processes and threat detection methodologies.Solid technical knowledge across networks, endpoints, cloud, and security tooling.

To find out more, please apply now or send a copy of your CV to [email protected]

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

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Role: Cloud Security Assessment Specialist - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are partnered with a global financial services organisation as they continue to strengthen their Cloud Security Assessment function. This role focuses on ensuring cloud‑hosted services meet mandatory security controls before moving into production. You'll act as a senior cloud security specialist, providing assurance, consultancy, and oversight across complex multi‑cloud environments.

What you'll be doing:

Executing Cloud Security Assessment reviews for cloud‑hosted services and managing reviews raisedProviding cloud security consultancy to engineering and application teams, supporting secure design and smooth transition into production.Assessing and applying cloud security controls, ensuring alignment with HSBC standards and regulatory expectations.Driving continuous improvement across assessment processes, including automation, data‑driven insights, and capability uplift.

Must have:

Strong hands‑on experience with Google Cloud Platform AWS, plus exposure to at least one additional cloud platform (Azure or Alibaba Cloud).Solid understanding of cloud security controls, risk, and control frameworks.Working knowledge of scripting and tooling such as Python, Bash, PowerShell, SQL etc…Excellent stakeholder management and communication skills, with the ability to influence across global technology and business teams.

To find out more, please apply now or send a copy of your CV to [email protected]

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

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Role: Security Architect (AppSec and Network Security) - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are partnered with a global financial services organisation undergoing multiple large-scale transformation programmes across their Cyber Security division. They are now looking for a Security Architect who has extensive experience managing end-to-end solution designs within large-scale transformation programmes with a heavy focus on Network Security and Application Security

Proven experience producing high-level solution designs in line with business requirements.Proven ability to conduct security assessments and threat modelling to inform design decisions.Strong background in cybersecurity, with deep expertise in network security and segmentation across data centers, cloud environments, and containerised platforms.Hands-on experience with technologies such as physical and virtual firewalls and MPLS/eVPNFamiliarity with macro- and micro-segmentation strategiesFinancial Services experience is an advantage

To find out more, please apply now or drop an email with a copy of your CV to [email protected]

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

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Role: Cloud Security Consultant - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are working with a global financial services organisation as they continue to strengthen and optimise their Cloud Cyber Security capability. This role focuses on driving cloud security maturity, automation, and governance, with a strong emphasis on Python‑based development alongside hands‑on cyber security expertise.

What you'll be doing:

Designing, developing, and enhancing cloud security solutions and automation using Python web frameworks (e.g. Flask, Django, FastAPI).Assessing and improving cloud security posture and maturity, including cloud security controls, baseline governance, and security scoring initiatives.

Must have:

Strong hands‑on experience securing cloud environments across one or more major cloud providers.Solid background in cyber security governance, including security controls, configuration baselines, and vulnerability assessment (e.g. CVSS).Proven track record delivering well written, well-structured web applications using (but not limited to) Flask, Django, FastAPI

To find out more, please apply now or send a copy of your CV to [email protected]

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

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Role: Security Architect (AppSec and Network Security) - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are partnered with a global financial services organisation undergoing multiple large-scale transformation programmes across their Cyber Security division. They are now looking for a Security Architect who has extensive experience managing end-to-end solution designs within large-scale transformation programmes with a heavy focus on Network Security and Application Security

Proven experience producing high-level solution designs in line with business requirements.Proven ability to conduct security assessments and threat modelling to inform design decisions.Strong background in cybersecurity, with deep expertise in network security and segmentation across data centers, cloud environments, and containerised platforms.Hands-on experience with technologies such as physical and virtual firewalls and MPLS/eVPNFamiliarity with macro- and micro-segmentation strategiesFinancial Services experience is an advantage

To find out more, please apply now or drop an email with a copy of your CV to [email protected]

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

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Role: Cloud Security Assessment Specialist - B2B

Duration: 6-month rolling contract

Working Pattern: Krakow, Hybrid (handful of days per month)

GCS Cyber are partnered with a global financial services organisation as they continue to strengthen their Cloud Security Assessment function. This role focuses on ensuring cloud‑hosted services meet mandatory security controls before moving into production. You'll act as a senior cloud security specialist, providing assurance, consultancy, and oversight across complex multi‑cloud environments.

What you'll be doing:

Executing Cloud Security Assessment reviews for cloud‑hosted services and managing reviews raisedProviding cloud security consultancy to engineering and application teams, supporting secure design and smooth transition into production.Assessing and applying cloud security controls, ensuring alignment with HSBC standards and regulatory expectations.Driving continuous improvement across assessment processes, including automation, data‑driven insights, and capability uplift.

Must have:

Strong hands‑on experience with Google Cloud Platform AWS, plus exposure to at least one additional cloud platform (Azure or Alibaba Cloud).Solid understanding of cloud security controls, risk, and control frameworks.Working knowledge of scripting and tooling such as Python, Bash, PowerShell, SQL etc…Excellent stakeholder management and communication skills, with the ability to influence across global technology and business teams.

To find out more, please apply now or send a copy of your CV to [email protected]

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

Read less