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Job Description

- Implements, refines, and validates machine learning algorithms for products and applications. - Implements data pipelines consisting of data ingest, data validation, data cleaning, and data monitoring.

- Trains machine learning models, validates the accuracy of the machine learning models once trained, and deploys validated machine learning models into production.

- Assists in development of proof of concept solutions and contributes to studies to support future product or application development.

- Researches, writes, and edits documentation and technical requirements, including evaluation plans, confluence pages, white papers, presentations, test results, technical manuals, formal recommendations, and reports.

- Tests and evaluates solutions. Completes case studies, testing, and reporting.

Skills

- Bachelor's degree in computer science, computer engineering, mathematics, related technical discipline, or related industry experience

- Experience with machine learning, deep learning, data mining, and/or statistical analysis tools and how to deploy and monitor machine learning models.

- Strong programming and software development skills and familiarity with Python, Java or Scala.

- Knowledge of data pipeline and cloud technologies such as Kafka, Spark, and Docker.

- 1-3 years related experience after Bachelors.

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

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Are you passionate about Trading Cards, TCGs, collectibles and creative product development?

We are seeking a Product Development Associate to support the creation of innovative trading card products and packaging for leading entertainment brands.

Working with creative teams, licensees and stakeholders, you will help take products from concept through to approval, ensuring strong design execution, brand alignment and timely delivery.

Product Development Associate - Trading Cards & TCGs
Location: London Once a week In office
Contract: Project Hire | Inside IR35

Duration : 12 months Initially

Key Responsibilities:

Support product and packaging development projects.Review creative submissions and provide feedback.Coordinate approvals, assets and project timelines.Research trends across gaming, collectibles and consumer products.Ensure products meet creative and brand standards.

Skills & Experience:

2+ years' experience in Product Development, Graphic Design or a related creative role.Strong understanding of design principles and visual storytelling.Proficiency in Adobe Creative Suite (Photo shop, Illustrator, InDesign).Excellent organisation, communication and project coordination skills.Experience with licensing, entertainment, toys, games or collectibles is desirable.

Ready to bring your creativity to the world of Trading Cards and collectibles? Apply now to be considered for this exciting London-based contract opportunity.

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

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Software Engineer - Low Latency / Distributed Systems
Tier-1 Investment Bank, Dublin (Hybrid) - Contract

Leading investment bank's Dublin technology hub is expanding its high-frequency trading infrastructure team. This is deep, hard engineering - the systems you build execute trades in microseconds, and every millisecond you shave off is measurable P&L. Not a CRUD shop, not a maintenance role.

What you'll work on:

Low-latency, high-throughput distributed systems processing millions of market events per secondPerformance-critical execution paths in C++/Java/Rust - kernel bypass, lock-free data structures, zero-copy designMarket data ingestion, order routing, and risk systems operating at exchange speedDirect collaboration with quant developers and trading desks Profiling and tuning at the OS/network/hardware boundary - NUMA awareness, CPU pinning, kernel bypass networking (DPDK/Solarflare-style stacks)

What we're looking for:

Strong CS fundamentals - concurrency, memory management, networking internals, cache-aware designProduction experience in C++, Java, or Rust in a genuinely performance-sensitive environmentExposure to FIX protocol, market data feeds, or exchange connectivity is a strong plusComfortable working close to the metal - this isn't abstraction-layer engineeringFintech/trading background not mandatory - elite backend engineers from adjacent high-scale, low-latency domains (ad-tech real-time bidding, gaming infra, telco) will be seriously considered

Team & setup:

Small, senior engineering pod embedded within the trading technology groupHybrid - Dublin office, with onsite time expected around trading hours/desk collaborationContract engagement, initial term with strong likelihood of extension given desk growth plans

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

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QA Automation Engineer / QA AnalystPosition Overview

We are seeking an experienced QA Automation Engineer / QA Analyst to join a fast-paced Agile development team supporting enterprise software applications. This role is responsible for ensuring the quality and reliability of software through test planning, automation, API validation, and end-to-end testing. The ideal candidate will have strong experience with Python scripting, Java-based applications, automated testing frameworks, and API testing while collaborating closely with developers, business analysts, and product owners throughout the software development lifecycle.

ResponsibilitiesDevelop, maintain, and execute comprehensive test plans, test cases, and automated test scripts for enterprise applications.Perform functional, regression, integration, system, and end-to-end testing to ensure software quality and reliability.Design and execute business use cases that accurately reflect real-world customer scenarios.Develop Python scripts to support testing of Java-based middleware and backend services.Perform API testing using REST, JSON, and Swagger to validate application functionality and data integrity.Track and report quality assurance metrics, including defect trends, test execution results, and overall test status.Log, document, and assist in troubleshooting software defects through resolution.Analyze software quality data and recommend process improvements to enhance testing efficiency and product quality.Participate in release planning, sprint activities, and risk assessments to identify potential delivery issues and mitigation strategies.Collaborate with developers, business analysts, product owners, and cross-functional teams throughout the Agile software development lifecycle.Support CI/CD testing activities using Jenkins and assist with automated build validation.Utilize Splunk and other diagnostic tools to analyze application logs and investigate production or test failures.Maintain test documentation, test evidence, and quality standards throughout the project lifecycle.Participate in quality reviews and audits to ensure compliance with organizational testing standards and best practices.Mentor team members on QA processes and contribute to continuous improvement initiatives.Required QualificationsBachelor's degree in Computer Science, Information Systems, or a related technical discipline (or equivalent professional experience).5-8 years of overall Quality Assurance experience.Minimum of 3 years of hands-on Python scripting experience.Strong experience with automated testing frameworks such as Selenium or Cypress.Experience testing Java-based applications or middleware.Experience performing API testing using REST, JSON, Swagger, or similar tools.Experience using Jenkins for CI/CD testing activities.Experience using Splunk or similar log analysis tools.Experience with test management tools such as TestRail.Experience working in Windows environments within Agile/Scrum teams.Knowledge of scripting languages such as JavaScript, Python, C#, VBScript, or JScript.Strong analytical, troubleshooting, and problem-solving skills.Excellent verbal and written communication skills.Ability to manage multiple priorities in a fast-paced Agile environment.Preferred QualificationsExperience supporting enterprise-scale applications.Experience with test automation framework development and maintenance.Exposure to media, telecommunications, or customer-facing digital platforms.Experience with performance or reliability testing.Familiarity with modern DevOps and CI/CD practices.

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

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Business Development Executive - Tech & Telecom Staffing

Orlando, FL (Hybrid)

GCS - Powering the Future of Tech Talent

At GCS Recruitment, we don't just fill roles - we build lasting partnerships that shape the future of the technology and telecom industries. Backed by the global nGAGE Talent Group and with over 35 years of recruitment excellence, we offer Business Development professionals an unrivalled platform to win, grow, and retain world-class clients.

We're looking for a driven Business Development Executive to join our expanding team and take ownership of growing our client base across the tech, telecom, and broadcast sectors.

Why Join GCS?

Uncapped Earning Potential: Competitive base plus an industry-leading, uncapped commission structureGlobal Backing: Leverage the resources and network of the nGAGE Talent Group across 10+ countriesCareer Progression: A clear path from BD Executive to Senior BD, Team Lead, and beyondWarm Market: Enter with an established brand name and decades of market credibilityCollaborative Culture: Work alongside expert recruiters and leadership who invest in your success

What You'll Be Doing

Identify, target, and win new business across the tech, telecom, broadcast, and media sectorsBuild and manage a portfolio of client accounts, driving revenue growth through consultative sellingConduct discovery calls, meetings, and presentations to understand client hiring needs and position GCS solutionsNegotiate terms, rates, and contractual agreements with hiring managers and procurement teamsPartner closely with the recruitment team to ensure seamless delivery and client satisfactionDevelop and maintain a pipeline of prospective clients using CRM, LinkedIn Sales Navigator, and market intelligenceAttend industry events, networking functions, and client hospitality opportunities to build market presenceConsistently achieve and exceed BD revenue targets and KPIs

Who We're Looking For

We're seeking entrepreneurial, commercially-minded individuals who thrive on building relationships and closing deals.

1-4 years of B2B sales or business development experience, ideally within staffing, recruitment, or a related professional services environmentProven track record of winning new business and achieving sales targetsStrong communication, negotiation, and presentation skillsHighly motivated, self-starter mentality with resilience and driveAbility to manage multiple opportunities across a sales pipeline simultaneouslyFamiliarity with CRM tools, LinkedIn Sales Navigator, and outbound sales techniquesA passion for technology and an interest in the talent industry

Compensation & Benefits

Base Salary: $50,000-$70,000 (experience based)Commission: Uncapped commission structure with accelerators for high performersHybrid Flexibility: 3 days onsite in Orlando, 2 days remoteComprehensive Benefits: Health, Dental & Vision Insurance401(k) Retirement PlanPaid Time OffOngoing sales training, BD coaching, and mentorship from senior leadership

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

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