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Java Data Engineer IV (Contractor)

Location: Philadelphia, PA (1701 John F. Kennedy Blvd)
Type: Contract

About the Role

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.

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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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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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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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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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We are hiring a Senior UI Developer to join a leading banking client working on a greenfield electronic trading platform within their Fixed Income technology team.

This is a hands-on development role building a next-generation eTrading application used by front office traders and sales teams to price, quote, and execute trades in real time.

London (Liverpool Street) | Hybrid (50% office)
💰 Up to £900-1000 per day (Inside IR35)
📅 12-month contract

They're looking for someone with:

Strong React + AG Grid experience building trading UIsSolid Java backend Front office eTrading / Fixed Income or FX backgroundExperience with low-latency systems & RFQ workflows

It's a hands-on build role (not managerial) on a brand-new platform, working closely with a lead developer.

If this sounds of interest, please apply and I'll come back to you with full details.

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

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Job Title: Senior .NET/JavaScript Full Stack Developer
Location: Limerick (Hybrid 2 days flexible)
Type: 6 Months contract (with possible extension)

Overview:
We are seeking a highly skilled Senior Full Stack Developer with strong expertise in .NET and JavaScript to join our dynamic engineering team. The ideal candidate will have a proven track record of building scalable web applications and delivering high-quality code across the full stack.

Key Responsibilities:

Design, develop, and maintain full-stack web applications using .NET (C#) and JavaScript frameworks (e.g., React, Angular, or Vue).Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of applications.Participate in code reviews and mentor junior developers.Troubleshoot and resolve technical issues across the stack.

Required Skills:

Strong experience with .NET Core / ASP.NET MVC.Proficiency in JavaScript and modern front-end frameworks.Solid understanding of RESTful APIs and microservices architecture.Experience with SQL Server or other relational databases.Familiarity with CI/CD pipelines and cloud platforms (Azure/AWS).

Preferred Qualifications:

Experience with containerization (Docker, Kubernetes).Knowledge of Agile methodologies.Excellent problem-solving and communication skills.

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

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