Full Stack Java DeveloperContract | HybridWe're seeking a senior Full Stack Java Developer to join a high-performing engineering... Read more
Contract | Hybrid
We're seeking a senior Full Stack Java Developer to join a high-performing engineering team delivering modern, cloud-native applications within an enterprise environment.
You'll play a key role in designing, building and deploying scalable systems across the full software development lifecycle, working within agile teams focused on quality, automation and continuous delivery.
Essential Skills & Experience5+ years' commercial Full Stack Engineering experience5 years strong React or React Native development expertiseProven Java and Spring Boot development experienceRESTful API design and developmentMicroservices architecture and distributed systemsSQL and database technologiesTest Driven Development (TDD) and Behaviour Driven Development (BDD)Unit, integration and automated testing practicesGitLab and CI/CD pipeline implementationOpenAPI Specification (OAS) and YAMLAWS cloud engineering experienceSecure coding and application security best practicesDevOps and Continuous Delivery methodologiesThis is an excellent opportunity to work on large-scale digital transformation programmes using modern engineering practices and cloud technologies.
Apply now for immediate consideration, interviews to take place next week
GCS is acting as an Employment Business in relation to this vacancy.
Read lessLondon, England, United KingdomContractRemote
Senior Software Engineer (Java/AWS)Permnent Role (No sponsroship is provided) | Dublin (Hybrid)Location: Dublin, Ireland Work Arrangement: Hybrid (minimum... Read more
Permnent Role (No sponsroship is provided) | Dublin (Hybrid)
Location: Dublin, Ireland
Work Arrangement: Hybrid (minimum 3 days per week in the office)
Our client is a global technology company building large-scale cloud software solutions for enterprise customers. Their products support complex business processes through highly available, scalable, and performance-driven platforms used across multiple industries worldwide.
The engineering organisation is focused on delivering reliable SaaS products, modern cloud infrastructure, and exceptional user experiences while operating within complex and demanding technical environments.
Role OverviewAs a Senior Software Engineer, you will design, develop, and enhance cloud-based backend services within a modern SaaS platform. This role is ideal for an engineer who enjoys solving complex technical challenges, understands end-to-end system behaviour, and collaborates closely with architects, frontend engineers, DevOps teams, mobile developers, and QA professionals.
We are looking for strong software engineers rather than specialists in a single technology area. You should be comfortable understanding system interactions, integration points, and data flows while making technical decisions that balance performance, scalability, maintainability, and business requirements.
You will also be encouraged to leverage modern AI-assisted tools to improve engineering productivity, code quality, and delivery efficiency.
Key ResponsibilitiesSoftware Development & EngineeringDesign, develop, and maintain backend services primarily using Java and Spring Boot.Build RESTful APIs, integrations, data-processing services, and core business functionality.Write clean, maintainable, well-tested, and scalable code.Collaborate with Product, Architecture, DevOps, QA, Frontend Engineering, and other technical teams.Participate in technical design discussions and contribute to architectural decisions.Analyse and optimise application performance, scalability, reliability, and maintainability.Support adoption of AI-assisted software development practices.Participate in code reviews and promote engineering best practices.Develop and maintain automated testing solutions.Improve system observability through monitoring, metrics, and logging.Assist in troubleshooting and resolving complex production issues.Contribute to CI/CD and deployment improvement initiatives.Required Experience6+ years of software engineering experience in backend or full-stack development, ideally within SaaS or cloud-based environments.Strong Java development experience.Experience with Spring Boot, Spring MVC, and Hibernate.Understanding of distributed systems, APIs, integrations, and modern application architecture.Experience working with cloud platforms, preferably AWS.Experience with containerisation and orchestration technologies such as Docker and Kubernetes.Strong knowledge of Git, Maven or Gradle, CI/CD pipelines, and modern software engineering practices.Exposure to monitoring, observability, and performance optimisation.Strong communication and collaboration skills.Degree in Computer Science, Software Engineering, or equivalent practical experience.Desirable ExperienceExperience working within complex enterprise software environments.Exposure to highly scalable, customer-facing SaaS products.Experience developing solutions that operate in regulated, high-availability, or large-scale environments.What's on OfferOpportunity to work on a large-scale cloud platform serving global customers.Exposure to modern cloud-native technologies and engineering practices.Competitive salary and benefits package.Collaborative and supportive engineering culture.Hybrid working environment.Opportunity to influence technical direction and platform evolution.
GCS is acting as an Employment Agency in relation to this vacancy.
Read lessDublin, Dublin County, Republic of IrelandPermanent
Senior Java Data Engineer (AWS | Databricks | Spring Boot) - ContractLocation: Philadelphia, PA (Hybrid) Duration: ContractBuild the... Read more
GCS is acting as an Employment Business in relation to this vacancy.
Read lessWashington, District of Columbia, United States of AmericaContract
Java Data Engineer IV (Contractor)Location: Philadelphia, PA (1701 John F. Kennedy Blvd) Type: ContractAbout the RoleOur team is... Read more
Location: Philadelphia, PA (1701 John F. Kennedy Blvd)
Type: Contract
Our team is seeking a Java Data Engineer IV to support a high-impact data engineering initiative focused on modernizing and scaling enterprise analytics. This role will be instrumental in building and enhancing the data pipelines that power inventory, supply, and yield reporting, enabling business-critical analytics delivered through Tableau Cloud.
You'll work alongside experienced data engineers to develop robust ETL solutions, migrate legacy data workloads, and build cloud-native data pipelines using AWS, Databricks, and Snowflake. This is an excellent opportunity for an engineer who enjoys solving complex data challenges in a collaborative Agile environment.
What You'll DoDesign, develop, and maintain scalable ETL and data engineering pipelines.Build data pipelines that ingest, transform, and load enterprise data into Databricks.Develop and enhance Java-based applications and microservices supporting data processing.Partner with engineering teams to translate business requirements into reliable technical solutions.Build, test, and optimize pipelines using AWS, Databricks, and Snowflake.Create technical documentation, design specifications, and support quality assurance efforts.Develop infrastructure using Terraform for repeatable cloud deployments.Build and maintain CI/CD pipelines using GitHub Actions or Concourse.Troubleshoot production issues and provide post-deployment support.Improve reliability, reduce single points of failure (SPOF), and implement risk mitigation strategies.Enhance and modernize legacy data engineering jobs while supporting cloud migration initiatives.Collaborate with cross-functional teams to establish engineering best practices and improve platform performance.Required Qualifications7+ years of software engineering or data engineering experience.Strong Java development experience.Hands-on experience with Spring Boot and Microservices architecture.Experience building ETL or data integration pipelines.Experience with AWS cloud services.Strong SQL skills.Experience with Databricks and/or Snowflake.Experience with Infrastructure as Code using Terraform.Experience building CI/CD pipelines using GitHub Actions, Concourse, Jenkins, or similar tools.Strong understanding of software testing, quality assurance, and production support.Excellent problem-solving and troubleshooting skills.Experience working in Agile development environments.Preferred QualificationsExperience supporting enterprise analytics or reporting platforms.Experience migrating legacy ETL workloads to modern cloud platforms.Familiarity with Tableau Cloud or other BI platforms.Experience optimizing large-scale data pipelines for performance and reliability.Knowledge of data governance and cloud data architecture best practices.What Success Looks LikeDeliver scalable, reliable cloud-based data pipelines.Successfully support migration of legacy data engineering workloads.Improve deployment automation and infrastructure reliability.Minimize production issues through proactive monitoring and risk mitigation.Enable high-quality analytics by delivering trusted, well-documented data assets.Technical EnvironmentLanguages: Java, SQLFrameworks: Spring Boot, MicroservicesCloud: AWSData Platforms: Databricks, SnowflakeInfrastructure: TerraformCI/CD: GitHub Actions, Concourse (or similar)Reporting: Tableau CloudMethodology: Agile
If you're passionate about building modern cloud data platforms, enjoy solving complex engineering challenges, and thrive in a collaborative environment, we'd love to hear from you.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessPhiladelphia, Pennsylvania, United States of AmericaContract
Job Role - Java Backend EngineerLocation: Remote (Candidates must be based in Poland)Office Hub: Kraków, PolandContract: 12 Months... Read more
We are seeking an experienced Senior Java Backend Engineer to join a high-performing engineering team on a 12-month B2B/Freelance contract, with a strong possibility of extension.
This is an exciting opportunity to work on a leading technology platform, collaborating with top-tier engineers in a fast-paced, international environment. You'll play a key role in shaping scalable backend solutions, driving technical excellence, and supporting teams across multiple stakeholders.
Key ResponsibilitiesCollaborate with highly skilled engineering teams to build and scale a best-in-class platform.Drive technical excellence and contribute to cross-team and cross-functional alignment.Design, develop, and maintain robust backend services and microservices-based architectures.Work with modern integration frameworks and implement enterprise integration patterns.Coach and mentor developers on both client and partner teams.Deliver technical training, workshops, and best-practice guidance.Collaborate effectively within diverse, multicultural teams across international locations.Stay up to date with emerging technologies and continuously improve existing solutions.Required Skills & ExperienceMinimum 5 years of experience in a Java Backend Engineering role.Bachelor's degree in Computer Science, Information Technology, or a related technical field (or equivalent practical experience).Excellent English communication, presentation, and stakeholder management skills.Strong hands-on experience with:JavaSpring / Spring BootMicroservices ArchitectureIntegration PatternsApache CamelSpring IntegrationProven ability to adapt to evolving technologies and software landscapes.Passion for building high-quality, scalable, and maintainable solutions.Experience coaching, mentoring, and supporting development teams.Interested?If you're a Java Backend Engineer passionate about Java, Spring, Microservices, and Integration Technologies, we'd love to hear from you.
Apply today or get in touch at [email protected] to learn more about this exciting freelance opportunity.
GCS is acting as an Employment Business in relation to this vacancy.
Read lessKrakow, Malopolskie, PolandFreelance
Automation Test ManagerHybrid | London | Outside IR35We're looking for an experienced Automation Test Manager to lead quality... Read more
Hybrid | London | Outside IR35
We're looking for an experienced Automation Test Manager to lead quality across a large-scale programme spanning 6 Agile teams.
You'll own the test strategy, define BDD test cases with Engineering and QA teams, lead bug triage, coordinate cross-team testing activities, and provide release recommendations to stakeholders.
Key Skills:
Test Strategy & Quality LeadershipBDD / CucumberPlaywright, Cypress, WebdriverIOJavaScript / TypeScriptCI/CD & Test AutomationStakeholder & Client ManagementDefect Management & Release GovernanceThis is an excellent opportunity to shape quality across a complex transformation programme and work closely with senior stakeholders in a highly visible role.
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 lessGreater London, United KingdomContract
We are excited to announce a fully remote opportunity with a leading financial client based in Poland. We're... Read more
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.
Read lessPolandContract
🚀 Senior Full Stack Developer - IAM📍 Locations: Atlanta 📄 Type: 12+ months ContractWe're looking for a Senior... Read more
📍 Locations: Atlanta
📄 Type: 12+ months Contract
We're looking for a Senior Full Stack Developer to build and support secure IAM (Identity & Access Management) applications in a cloud-first environment.
🔧 Key ResponsibilitiesDevelop secure full stack applications (Angular + Java/Spring Boot)Build and maintain REST APIsImplement authentication & authorization (OAuth2, OIDC, JWT)Support AWS cloud-native and migration initiativesCollaborate with cross-functional teams and lead technical efforts✅ RequirementsStrong experience in Angular (latest versions) + Java 17 + Spring BootHands-on AWS (Lambda, S3, ECS/Fargate, DynamoDB)Solid understanding of IAM & security best practicesExperience with Spring Security & secure API designKnowledge of MySQL, MongoDB, RedisProven ability to lead and mentor teams⚠️ Must Have✅ IAM / Security experience
✅ Full stack expertise
✅ Cloud (AWS) experience
✅ Leadership mindset
GCS is acting as an Employment Business in relation to this vacancy.
Read lessAtlanta, Georgia, United States of AmericaContractRemote
🚀 Senior Full Stack Developer - IAM📍 Location: Philadelphia, PA (Remote Available) 📄 Type: Long-Term ContractWe're looking for... Read more
📍 Location: Philadelphia, PA (Remote Available)
📄 Type: Long-Term Contract
We're looking for a Senior Full Stack Developer to build and support secure IAM (Identity & Access Management) applications in a cloud-first environment.
🔧 Key ResponsibilitiesDevelop secure full stack applications (Angular + Java/Spring Boot)Build and maintain REST APIsImplement authentication & authorization (OAuth2, OIDC, JWT)Support AWS cloud-native and migration initiativesCollaborate with cross-functional teams and lead technical efforts✅ RequirementsStrong experience in Angular (latest versions) + Java 17 + Spring BootHands-on AWS (Lambda, S3, ECS/Fargate, DynamoDB)Solid understanding of IAM & security best practicesExperience with Spring Security & secure API designKnowledge of MySQL, MongoDB, RedisProven ability to lead and mentor teams⚠️ Must Have✅ IAM / Security experience
✅ Full stack expertise
✅ Cloud (AWS) experience
✅ Leadership mindset
GCS is acting as an Employment Business in relation to this vacancy.
Read lessPhiladelphia, Pennsylvania, United States of AmericaContractRemote
🚀 Senior Full Stack Developer - IAM📍 Locations: Chicago 📄 Type: 12+ months ContractWe're looking for a Senior... Read more
📍 Locations: Chicago
📄 Type: 12+ months Contract
We're looking for a Senior Full Stack Developer to build and support secure IAM (Identity & Access Management) applications in a cloud-first environment.
🔧 Key ResponsibilitiesDevelop secure full stack applications (Angular + Java/Spring Boot)Build and maintain REST APIsImplement authentication & authorization (OAuth2, OIDC, JWT)Support AWS cloud-native and migration initiativesCollaborate with cross-functional teams and lead technical efforts✅ RequirementsStrong experience in Angular (latest versions) + Java 17 + Spring BootHands-on AWS (Lambda, S3, ECS/Fargate, DynamoDB)Solid understanding of IAM & security best practicesExperience with Spring Security & secure API designKnowledge of MySQL, MongoDB, RedisProven ability to lead and mentor teams⚠️ Must Have✅ IAM / Security experience
✅ Full stack expertise
✅ Cloud (AWS) experience
✅ Leadership mindset
GCS is acting as an Employment Business in relation to this vacancy.
Read lessChicago, Illinois, United States of AmericaContractRemote
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