1 to 25 of 139 Permanent Java Jobs in Belfast

Are you a skilled Java Software Engineer looking to build next-generation infrastructure platforms? We're hiring on behalf of our client – a leading technology provider serving some of the biggest names in global financial services, based in Belfast. Join a high-calibre, global team developing resilient, performant microservices powering … and performance Solve complex engineering challenges at scale, with a focus on clean, efficient, and tested code Essential Skills & Experience: 3+ years’ experience in Java (Java 8 or above) Strong understanding of microservices architecture and platform engineering Proficiency in Spring, Micronaut , or equivalent Java frameworks Experience with Relational and NoSQL More ❯

Are you a skilled Java Software Engineer looking to build next-generation infrastructure platforms? We're hiring on behalf of our client – a leading technology provider serving some of the biggest names in global financial services, based in Belfast. Join a high-calibre, global team developing resilient, performant microservices powering … and performance Solve complex engineering challenges at scale, with a focus on clean, efficient, and tested code Essential Skills & Experience: 3+ years’ experience in Java (Java 8 or above) Strong understanding of microservices architecture and platform engineering Proficiency in Spring, Micronaut , or equivalent Java frameworks Experience with Relational and NoSQL More ❯

Senior Java Developer - £75k | FinTech | remote | Java, React, AWS, TypeScript G.Digital have exclusively partnered with a growing FinTech who are looking for a Senior Java Engineer. 🔧 What You’ll Do: Design, develop, and maintain high-performance Java applications Collaborate with cross-functional teams to define, design, and ship new features … of applications Mentor junior developers and provide technical leadership Advocate for clean, scalable, and maintainable code ✅ What you will need: 5+ years of professional Java development experience Experience working with TypeScript to help with frontend bottlenecks Strong understanding of Spring/Spring Boot, REST APIs, and microservices architecture Solid knowledge … plus Excellent problem-solving skills and a team-first mindset 💡 Bonus Points For: Experience with Python 🚀 Package up to £75k remote working bonus Senior Java Developer - £75k | FinTech | remote | Java, React, AWS, TypeScript More ❯

patterns, including microservices and message-driven architectures Hands-on developing/coding experience using the following technologies: Frontend ( React, Angular, JavaScript, TypeScript) Backend ( Node.js , Java, Spring Boot, Hibernate) NFR/Non-Functional requirement understanding and experience developing applications with this in mind Strong experience with Test-Driven Development (TDD) approach More ❯

areas of Build, Integration Suite , and SAP Datasphere . Expertise in professional code development, including hands-on experience with modern programming languages such as Java, Python, or JavaScript. Strong understanding of cloud-based platforms, particularly SAP BTP, and its components (Integration Suite, SAP Build, SAP Datasphere). Hands-on experience More ❯

Computer Science, Software Engineering, or a related field. 2+ years of experience in software development, with proficiency in one or more programming languages (e.g., Java, C#, Python, etc.). Experience in designing and developing API services and RESTful applications. Familiarity with databases (SQL and NoSQL) and cloud technologies (AWS, Azure More ❯

tools, focusing on seamless deployment and operational efficiency Programming Proficiency: Strong skills in scripting and programming with experience in languages such as Python, Bash, Java, C#, or Node.js, suitable for diverse development and automation tasks. Project Management and Delivery: Proven ability to plan, manage, and deliver large-scale cloud transformation More ❯

s degree in computer science or engineering field involving software programming or systems engineering Hands-on professional software development experience Proficiency in programming in Java, Python, JavaScript or React Hands on experience of building RESTful APIs using popular frameworks like Spring Experience of following TDD and clean code principles Proficiency More ❯

s degree in computer science or engineering field involving software programming or systems engineering Hands-on professional software development experience Proficiency in programming in Java, Python, JavaScript or React Hands on experience of building RESTful APIs using popular frameworks like Spring Experience of following TDD and clean code principles Proficiency More ❯

platforms and knowledge of financial markets Knowledge of FIX protocol and ability to handle FIX interactions In-depth knowledge of AWS services Experience with Java, JavaScript or React Experience with serverless architecture and microservices Experience with TDD, BDD or similar approaches Band & Level - Manager, 7 Company Statement We know that More ❯

or equivalent technical role. • Proven track record designing enterprise-level solutions across various platforms and technologies. • Proficiency in at least one programming language (e.g., Java, Python, C#). • Strong understanding of cloud platforms (AWS, Azure, or Google Cloud) and modern architectural approaches. • Hands-on experience with APIs, microservices, containerisation (e.g. More ❯

Continuously improve the test automation framework and processes. Contribute to improving team processes and methodologies and following best practices. Essential Criteria Competent in Python, Java or alternative object-oriented language(s). Competent working in a Linux command line driven environment. Experience of writing and refactoring both manual and automated More ❯

by example. Strong communication and stakeholder engagement skills. A degree in Computer Science, Engineering, Data Science, or a similar field. Tech Stack Highlights Python Java AWS (including Bedrock) Claude Terraform Docker MySQL GitHub & GitHub Actions Perks and Benefits Competitive salary package 25 days holiday (Not including bank holidays) Flexible remote More ❯

Mastery of modern web technologies & Javascript is essential: React, CSS, Node, Angular, etc. Proficient in at least one all purpose imperative language: Python (ideal), Java, C++, etc. Familiar with modern DevOps/CloudOps best practices - test driven development, CI/CD, etc. Desirable: prior experience with Azure and NoSQL Desirable More ❯

of testing and executing against web applications, APIs, and microservices. Proficiency in one or more programming/scripting languages (e.g., JavaScript, Python, C# or Java). Extensive experience with test automation tools, frameworks and good practice approaches. Strong knowledge of performance testing and performance testing tools such as JMeter. Familiarity More ❯

expertise in secure software development, secure coding practices, and OWASP Top 10/CWE 25. Strong technical proficiency in modern programming languages (e.g., Python, Java, JavaScript, Go, or C#). Experience with cloud-native security (AWS, Azure, GCP) and securing containerized environments (Docker, Kubernetes). Proficiency in security testing tools More ❯

Backend Developer with DevOps experience, possessing the following: • Proven expertise (5+ years) in backend development with proficiency in PHP and experience in Python or Java as a plus. • Familiarity with PHP frameworks, preferably Laravel. • In-depth knowledge of relational databases (MySQL) and NoSQL systems (e.g., Elasticsearch). • Hands-on experience More ❯

or ECS, IAM, VPC networking, S3. Networking and Linux system administration skills. Comfortable with one or more of the following languages: Python, Ruby, Javascript, Java, Bash. Working knowledge with one or more of the following - Terraform, CloudFormation, Chef, Ansible, Puppet. Passionate about Cloud Security and developer experiences. Goal-driven, positive More ❯

with a code review process. Adaptability: Thrive in a dynamic startup setting, embracing agile methodologies and evolving priorities. Technical Skills Knowledgeable in Kotlin/Java, Jetpack Compose, and the Android SDK Cloud platforms/AWS/Azure/GCP Infrastructure as code (we use Pulumi) Relational databases such as MySQL More ❯

or Computer Science related field. 8+ years of software engineering or QA automation experience Strong coding skills in at least one modern language (e.g. Java, Python, TypeScript) Proven experience with UI and API testing tools (e.g., Selenium, Playwright, Cypress, Postman) Deep understanding of software testing principles, methodologies, and lifecycle Experience More ❯

Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and More ❯

tools Clear communication skills with a proactive, team-oriented mindset Experience across the full software development lifecycle 💡 Bonus Points For Experience with C++ or Java Exposure to crypto, trading, or finance-related platforms Familiarity with Docker, Kubernetes, CI/CD (GitHub Actions, GitLab, Jenkins, etc.) Prior contributions to open-source More ❯

with strong communication skills Proficient in AWS services, including EC2, RDS, EMR, VPC networking, S3, etc. Comfortable with one or more of: Python, Ruby, Java, Groovy, Bash Working knowledge with one or more of: Terraform, Ansible, Kubernetes, Podman Familiar with Istio, Karpenter, Kong, Cassandra, ElasticSearch, Jenkins, Argo, Spinnaker, Git Linux More ❯

Skills Minimum of 6-9 years of experience with a history of hands on development in at least one of the following programming languages: Java, C#, C/C++, Python, Javascript, Ruby. Significant experience using and implementing Web Services (REST, SOAP, RPC, RMI) and monitoring APIs. Familiarity with network communication More ❯

expertise to encourage their development and strengthen the team's overall skillset. Skills Profile Strong command of JVM-based languages, with openness to Kotlin, Java, Scala, or Groovy. Experience delivering scalable, production-quality software solutions end-to-end. Focused on outcomes, with practical experience in service-oriented and microservices architectures. More ❯